feat: add static lightmap baking, dynamic lighting, player flashlight, and v5 format support

AGENTS.md

@@ -137,7 +137,7 @@ invoke DrawNumber8x8, 120, 42, playerHealth, COLOR_WHITE
 The engine supports both procedural default generation and binary level loading. When `assets/map.dat` exists, `LoadMapBinary` in `include/engine_map.inc` automatically loads it:
 - **Header (`MapHeader`, 38 bytes, packed)**:
   - `magic` (uint32): `0x4E4C4245` ("EBLN")
-  - `version` (uint16): `4` (readers also accept v1 fixed sprite coordinates and v2/v3 raw-coordinate maps, including early v2 maps with transitions)
+  - `version` (uint16): `5` (readers also accept v1 fixed sprite coordinates and v2/v3/v4 raw-coordinate maps, including early v2 maps with transitions)
   - `mapWidth` (uint16): `32`
   - `mapHeight` (uint16): `32`
   - `playerStartX` (uint16): cell X coordinate (e.g. 2)
@@ -147,16 +147,17 @@ The engine supports both procedural default generation and binary level loading.
   - `ceilingColor` (uint32): 00RRGGBBh
   - `floorColor` (uint32): 00RRGGBBh
   - `transitionCount` (uint16): 0..16 (v1 ignores this formerly reserved field)
-  - `cutsceneCount` (uint16): 0..128 commands (offset 28, v4 only)
+  - `cutsceneCount` (uint16): 0..128 commands (offset 28, v4+)
-  - `cutsceneStringCount` (uint16): 0..32 strings (offset 30, v4 only)
+  - `cutsceneStringCount` (uint16): 0..32 strings (offset 30, v4+)
-  - `cutsceneFlags` (uint16): bit 0 = autoplay on room entry (offset 32, v4 only)
+  - `cutsceneFlags` (uint16): bit 0 = autoplay on room entry (offset 32, v4+)
-  - `reserved[4]` (bytes): reserved padding
+  - `lightCount` (uint16): 0..13 authored sources (offset 34, v5 only)
+  - `lightingReserved` (uint16): zero (offset 36, v5 only)
 - **Grid Data**: `32 * 32 = 1024` bytes (row-major order). Cell value = texture slot (1 brick, 2 wood, 3 stone, 4 metal, 5 door, 7 pillar, 8 glass, 9 marble).
 - **Sprite Array**: `spriteCount * 24` bytes (`SpriteStruct`: `x`, `y` in raw world units, `textureId`, `scale` 16.16, `dist`, `flags`).
 - **Transition Array**: `transitionCount * 42` bytes (`LevelTransition` in both `engine_defs.inc` and `editor/src/level_format.h`). Target names are ASCII basenames, 5..31 bytes including `.dat`, with a terminating NUL inside `targetMap[32]`. Put linked maps in the same assets directory. Triggers must be unique and occupy empty, open-door or portal cells; every portal cell needs a transition.
 - Files are validated completely before replacing the active room. Counts above capacity, truncated/extra payload, invalid coordinates/scales, blocked spawns and invalid transition names are rejected. Black ceiling/floor colors are valid. A failed runtime transition keeps the current room; a failed startup load creates the procedural map.
 - **Cutscene Array (v4)**: after transitions, `cutsceneCount * 16` bytes; followed by `cutsceneStringCount * 96` bytes of NUL-terminated CP1251 strings. No serialized pointers. Earlier versions ignore the new header fields and load an empty track.
-- New saves use v4 without rewriting existing map files until explicitly saved. Sprite positions must remain inside the map; scales accepted by loaders are 0..16.0 (0 keeps the legacy 1.0 behavior).
+- New saves use v5 without rewriting existing map files until explicitly saved. Sprite positions must remain inside the map; scales accepted by loaders are 0..16.0 (0 keeps the legacy 1.0 behavior).
 
 Human users can design levels visually using `run_editor.bat` (`editor/editor.exe`, written in C++17 + ImGui + DirectX 11), with 1-click Playtest (F5).
 AI agents can directly read or write `assets/map.dat` following this specification.
@@ -202,7 +203,7 @@ F6 opens EblanStudio's timeline. Author commands with buttons, drag diamonds to
 `examples/cutscene_demo/run_demo.bat` runs an isolated two-room example with camera waypoints, Russian subtitles, WAV, fades and a scripted transition. Regenerate it with `python tools/make_cutscene_demo.py`.
 
 ### I. Embedded Game View
-The x64 editor uses a windowless x86 `engine.exe --preview:Local\EblanPreview-...` process to execute the actual `Render3DScene`, cinematic overlay and fade procedures. No duplicate raycaster. `editor/src/preview_protocol.h` and `include/engine_preview.inc` define a versioned 1,357,792-byte shared-memory mailbox: 128-byte header, 1024 cells, 32 sprites, a 96-byte CP1251 subtitle, 16 texture slots and a 320x240 DIB frame. Header state is 0 idle, 1 engine owns payload, 2 editor owns result, 3 shutdown. Publish with InterlockedExchange/xchg; never modify payload while state is 1. All fields are fixed-width; do not put pointers or size_t into the wire layout.
+The x64 editor uses a windowless x86 `engine.exe --preview:Local\EblanPreview-...` process to execute the actual `Render3DScene`, cinematic overlay and fade procedures. No duplicate raycaster. `editor/src/preview_protocol.h` and `include/engine_preview.inc` define a versioned 1,362,408-byte shared-memory mailbox (protocol v2): 128-byte header, 1024 cells, 32 sprites, a 96-byte CP1251 subtitle, 16 texture slots, a 320x240 DIB frame, 13 authored light records and 1024 baked RGB cells. Header state is 0 idle, 1 engine owns payload, 2 editor owns result, 3 shutdown. Publish with InterlockedExchange/xchg; never modify payload while state is 1. All fields are fixed-width; do not put pointers or size_t into the wire layout.
 
 The renderer validates camera and sprite bounds, uploads textures only when their revision changes, and exits if its parent process ends. The editor has process-exit/timeout checks and a retry button, converts DIB padding to opaque alpha, uploads BGRA to DX11 and displays with point sampling at 4:3. Map/inspector changes appear without saving. Timeline playback/scrubbing drives the viewport camera, subtitles and fade. Free-camera inspection affects no authored data. The viewport shows the scene and cinematic overlays; normal game HUD, door interactions and room switching are tested in F5.
 
@@ -272,3 +273,32 @@ EblanStudio has evolved from a pure level editor into a **Full Game Engine Studi
    - Editor toolbar 1-click genre switcher: `☮ КВЕСТ / БЕЗ ОРУЖИЯ` vs `⚔ ЭКШЕН / С ОРУЖИЕМ`.
    - Project settings (`project.eblanproj`) persist `GameMode`, `ShowWeapons`, and `ShowCrosshair`.
 
+7. **Static Lightmap Baking & Realtime Dynamic Lighting (`include/engine_light.inc`)**:
+   - `BakeMapLighting`: precomputes 1024 RGB cells in `lightGridRGB` from active STATIC sources only, with exact supercover cell-boundary occlusion, approximate distance attenuation and an out-of-place, wall-aware cross filter. `lightGrid` is a derived grayscale view. Realtime sources are never baked or counted twice.
+   - Dynamic point lights (`LIGHT_TYPE_POINT`) with customizable color, radius, intensity, and organic torch flame flicker (`LIGHT_FLAG_FLICKER`).
+   - Dynamic burst lights (`LIGHT_TYPE_BURST`): weapon muzzle flare on pistol/shotgun shots and high-intensity fiery explosion blast on explosive barrel detonation.
+   - Player directional spotlight flashlight `[F]`: conical falloff (`flashlightConeAngle`), distance attenuation, and wall occlusion physics.
+   - Dynamic lighting mode cycle `[L]`:
+     - `LIGHTING_MODE_NONE (0)`: classic flat Wolf3D retro fullbright.
+     - `LIGHTING_MODE_BAKED (1)`: static baked lightmap shadows and ambient shading.
+     - `LIGHTING_MODE_DYNAMIC (2)`: full dynamic physics (point lights + player flashlight + muzzle flares + barrel blasts + lightmap).
+   - EblanStudio Studio & Editor Lighting Tools:
+     - 1-Click Toolbar Button: `💡 ЗАПЕЧЬ СВЕТ` (Bake Lightmap) for instant baking.
+     - Toolbar Lighting Mode Switcher: `[☀ Свет: ВЫКЛ]`, `[🕯 Свет: ЗАПЕЧЁН]`, `[⚡ Свет: ДИНАМИКА]`.
+     - Toolbar Flashlight Toggle: `[🔦 Фонарик: ВКЛ/ВЫКЛ]`.
+     - 2D Canvas Lightmap Heatmap Overlay: `[🗺 Карта: ВКЛ/ВЫКЛ]` visualizing light and shadow gradients across the level grid.
+     - Light Source Entities on 2D Canvas: interactive light markers with RGB tint, glow halo, radius circle, click-to-select, and real-time mouse dragging.
+     - Quick Spawner Palette: `+ Источник света` button.
+     - Scene Hierarchy: dedicated `💡 Источники света (Lights)` tree with selection and "+ Добавить свет".
+     - Property Inspector: position X/Y sliders, radius slider, intensity slider, RGB color picker, light type dropdown (Static, Point, Torch flicker, Pulse), wall shadow-casting toggle, and torch flicker toggle.
+     - Real-Time 3D Viewport synchronization via `EnginePreviewPacket` shared-memory protocol.
+
+
+### K. Authored Lighting Format (EBLN v5)
+After the v4 cutscene strings, v5 appends `LightingSettings` (32 bytes), `lightCount * 40` bytes of `LightSource`, and 1024 DWORD baked RGB cells (`00RRGGBB`, 4096 bytes). Settings are eight DWORDs: mode (0..2), ambient (0..255), flashlight (0/1), flashlight radius (32..2048), intensity (0..255), half cone angle (1..96 angle units), baked-valid (1), reserved (0). Source layouts match `EditorLightSource` and MASM `LightSource`. Counts/settings/coordinates/radii/intensities/flags/colors and exact file size are validated before committing a room. v1..v4 load no authored lights and mode NONE; the old reserved header bytes are ignored.
+
+Sources and baked data are map-local and travel with save/load, undo/redo, F5 and standalone exports. Static lighting is baked in the editor with BakeLightingRGB and in ASM with BakeMapLighting; all 1024 RGB cells are regression-compared. Realtime point/pulse/flicker lights use only the live source array on top of the persisted static map. Shadow flags are respected. Slot 0 belongs to the player flashlight, 1..13 to authored sources, 14 to muzzle flare, 15 to explosions; combat never overwrites authored lights. Both wall stripes and sprites receive RGB coefficients. Flat ceiling/floor colors use a camera-cell light sample, not per-pixel floor projection.
+
+Editor light settings are in the property inspector and toolbar. A stale-bake indicator tracks static sources, geometry and ambient, excluding realtime movement. Saving or F5 automatically rebuilds a stale static bake; runtime and preview consume persisted RGB without baking each frame. The IPC v2 header includes flashlight parameters and a deterministic light tick; sources begin at offset 1,357,792 and baked RGB at 1,358,312. Update the C++, ASM and Python layouts together.
+
+Lighting verification (24.10.2026): 117 editor checks and 131 ASM checks passed; all 1024 RGB bake cells match, and both lit and classic viewport framebuffers match direct ASM rendering. Project assets were verified unchanged.

README.md

@@ -112,7 +112,7 @@ build_editor.bat
 
 ## Переходы и проверка первых трёх этапов
 
-Карты новых сохранений используют EBLN v4; существующие v1/v2/v3 продолжают читаться. Связанные `.dat` лежат в одной папке. В портале задаётся ASCII-имя файла до 31 символа, целевой спавн, угол и затемнение. На карту доступно до 16 переходов. Заливка учитывает этот лимит целиком; удаление клетки удаляет её триггер. Чёрный пол и потолок поддерживаются.
+Карты новых сохранений используют EBLN v5; существующие v1/v2/v3/v4 продолжают читаться. Связанные `.dat` лежат в одной папке. В портале задаётся ASCII-имя файла до 31 символа, целевой спавн, угол и затемнение. На карту доступно до 16 переходов. Заливка учитывает этот лимит целиком; удаление клетки удаляет её триггер. Чёрный пол и потолок поддерживаются.
 
 Порталы имеют отдельную текстуру и не занимают слот фонаря. Первый импорт изображения создаёт недостающие папки и пакет со стандартными текстурами в остальных слотах. Повреждённый пакет не перезаписывается импортом; ошибка показывается в строке состояния. Неудачный переход сохраняет текущую комнату и показывает сообщение в игре.
 
@@ -134,4 +134,16 @@ python tools\test_regressions.py
 
 Предпросмотр останавливается на команде перехода в другую комнату; цепочка комнат и игровой ввод проверяются через F5. F5/F6 работают при фокусе интерфейса и текстовых полей. Ошибка запуска показывается отдельным сообщением. При старте редактор открывает карту проекта относительно своего файла, поэтому запуск из другой рабочей папки не ломает пути.
 
-Формат v4 и параметры команд описаны в [AGENTS.md](AGENTS.md) и [архитектуре движка](docs/ENGINE_ARCHITECTURE.md). Сценарии регрессии также проверяют сохранение/загрузку трека, повреждённые команды, Undo/Redo, упаковку WAV для F5, горячие клавиши при фокусе в интерфейсе, покадровое совпадение состояния C++ с ASM, передачу кадров в DX11 и точное совпадение пикселей игрового вида с движком. Перед запуском проверок соберите `engine.exe` через `build.bat`.
+Формат v5 и параметры команд описаны в [AGENTS.md](AGENTS.md) и [архитектуре движка](docs/ENGINE_ARCHITECTURE.md). Сценарии регрессии также проверяют сохранение/загрузку трека, повреждённые команды, Undo/Redo, упаковку WAV для F5, горячие клавиши при фокусе в интерфейсе, покадровое совпадение состояния C++ с ASM, передачу кадров в DX11 и точное совпадение пикселей игрового вида с движком. Перед запуском проверок соберите `engine.exe` через `build.bat`.
+
+## Постоянный и динамический свет
+
+В палитре выберите «+ Источник света» и поставьте его на карте. Источники доступны также в дереве сцены. В инспекторе задайте тип, цвет, радиус, яркость, тени и мерцание; работают перемещение, копирование, удаление и Undo/Redo.
+
+- **Постоянный**: выберите тип «Постоянный (запекание)», затем нажмите «Запечь постоянный свет». RGB-освещение и тени сохраняются в карте. После изменения геометрии, фонового света или постоянного источника инспектор покажет, что нужно запечь заново. При сохранении и F5 это происходит автоматически.
+- **Динамический**: выберите точечный или пульсирующий источник и режим «Запечённый + динамический». Перемещение, цвет, яркость и мерцание сразу влияют на игровой вид. Перезапекать постоянный свет при этом не нужно.
+- **Режимы**: «Без освещения», «Только запечённый», «Запечённый + динамический». Фоновый свет и параметры фонарика настраиваются в разделе «Освещение карты» инспектора. В игре F переключает фонарик, L — режим света.
+
+До 13 источников карты; фонарик, вспышки оружия и взрывов используют отдельные места. Закрытые двери и стены перекрывают динамический свет. Статические тени остаются результатом последнего запекания. Цвета стен и спрайтов освещаются по RGB; освещение плоских потолка/пола берётся в точке камеры. Запечённая карта имеет разрешение 32×32 ячейки.
+
+Новые сохранения используют EBLN v5. Старые карты сохраняют прежний вид без освещения, пока вы не добавите источники и не включите нужный режим. Свет каждой комнаты сохраняется независимо. Перед экспортом игры сохраните карты.

docs/ENGINE_ARCHITECTURE.md

@@ -95,7 +95,7 @@
 
 ## 5. Загрузка карт и ресурсов
 
-Новые карты сохраняются как EBLN v4: заголовок 38 байт, сетка 1024 байта, спрайты по 24 байта, переходы по 42 байта, команды кат-сцены по 16 байт и строки по 96 байт. Чтение старых v1/v2/v3 сохранено; ранние v2 с переходами поддерживаются. Загрузчики сначала проверяют весь файл во временных буферах, затем заменяют комнату. При ошибке перехода текущая комната сохраняется; при ошибке начальной загрузки создаётся процедурная карта. Значение цвета 0 — полноценный чёрный цвет.
+Новые карты сохраняются как EBLN v5: заголовок 38 байт, сетка 1024 байта, спрайты по 24 байта, переходы по 42 байта, команды кат-сцены по 16 байт и строки по 96 байт. Чтение старых v1/v2/v3/v4 сохранено; ранние v2 с переходами поддерживаются. Загрузчики сначала проверяют весь файл во временных буферах, затем заменяют комнату. При ошибке перехода текущая комната сохраняется; при ошибке начальной загрузки создаётся процедурная карта. Значение цвета 0 — полноценный чёрный цвет.
 
 Файлы связанных подуровней лежат рядом друг с другом. В `targetMap[32]` хранится только ASCII-имя `.dat` с завершающим нулём. Переход после появления в его ячейке повторно активируется только после выхода из неё. Двери и взаимодействие реагируют на отдельные нажатия.
 
@@ -142,3 +142,17 @@ WASD, стрелки и правая кнопка мыши позволяют о
 F5/F6 обрабатываются до признака захвата клавиатуры ImGui — иначе фокус внутри редактора блокировал запуск. Ошибки подготовки и запуска F5 выводятся отдельным диалогом. Начальный путь карты определяется относительно расположения редактора и загружается при старте, независимо от рабочей папки процесса.
 
 Проверки выполняют полный путь x86 ASM → раздел памяти → x64 редактор → текстура DX11 на устройстве WARP. Пиксели встроенного вида сравниваются с прямым вызовом обычного ASM-рендерера. Отдельный сценарий `python tools/test_preview_ipc.py` проверяет обновление стен и текстур, субтитры, затемнение и завершение без открытия окон. Для полного регрессионного набора предварительно соберите движок.
+
+## 9. Запекание и динамический RGB-свет (24.10.2026)
+
+Запечённый свет отделён от динамических источников. `lighting_format.h` выполняет запекание в редакторе; `engine_lighting_core.inc` содержит эквивалентный ASM-вариант и расчёт света при рендеринге. Постоянные источники (STATIC=0) входят в 1024 RGB-ячейки `lightGridRGB`. Точечные (POINT=1), пульсирующие (PULSE=4), мерцание, фонарик и временные вспышки прибавляются только при динамическом режиме. Это исключает повторное прибавление света. Источник цвета 0 излучает чёрный свет; белый задаётся явно как 00FFFFFFh.
+
+Оба запекателя используют расстояние `max(abs(dx),abs(dy)) + 3*min(abs(dx),abs(dy))/8`, затухание `(radius-distance)*intensity/radius`, RGB-цвет и насыщение каналов. `CastLightRay` проверяет точные пересечения границ клеток; при пересечении угла проверяются обе соседние клетки. Порталы и открытые двери пропускают свет. Флаг SHADOWS отключает проверку препятствий для выбранного источника. Сглаживание выполняется в отдельном буфере с весом 2 для центра и 1 для доступных соседей, без усреднения сквозь стену.
+
+В v5 после строк кат-сцены добавлены 32 байта настроек, lightCount записей по 40 байт и 4096 байт RGB-карты. Поля lightCount/reserved занимают смещения 34/36 прежнего 38-байтового заголовка. Настройки: режим, фон, включение фонаря, его радиус, интенсивность, полуугол, baked-valid=1, reserved=0 (все DWORD). Загрузка транзакционная, включая освещение: повреждённая комната не заменяет действующую. Старые v1..v4 сбрасывают источники и сохраняют классическое освещение. После перехода загружается свет новой комнаты; старые источники и вспышки очищаются.
+
+Игровой вид использует протокол EBPV v2 размером 1 362 408 байт: прежние смещения пикселей и текстур сохранены, после кадра добавлены 13 источников и RGB-карта. Источники и фонарик синхронизируются при каждом запросе; время мерцания/пульсации задаётся 60-Гц счётчиком. Перезапекания на каждом кадре нет. В игре обновление использует время симуляции, а запечённая карта читается непосредственно из файла. У стен освещение берётся у видимой грани, у спрайтов — в их позиции; фонарик проверяет и конус, и заслонение. Плоские потолок/пол используют один образец в точке камеры, без проекции света по каждому пикселю пола.
+
+Слоты 1..13 принадлежат источникам карты; 0 зарезервирован фонарю, 14 вспышке выстрела, 15 взрыву. Вспышки не могут перезаписать авторские источники. Режимы света, источники, RGB-данные и состояние запекания входят в Undo/Redo. Изменение постоянного света/геометрии/фона помечает результат устаревшим; динамическое движение не требует запекания. Сохранение и F5 автоматически обновляют устаревший результат.
+
+Регрессии проверяют цвет, заслонение стенами/дверями/углами, флаги теней, отсутствие двойного освещения, пульсацию и затухание вспышек, сохранение v5, отказ от повреждённых данных, старые карты, Undo/Redo и реальное обновление игрового вида. Все 1024 RGB-ячейки сравниваются между C++ и ASM. Кадры сцены с авторским светом из встроенного вида сравниваются с прямым рендерингом той же карты в ASM.

editor/imgui.ini

@@ -1,22 +1,22 @@
 [Window][Workspace]
 Pos=0,60
 Size=2560,1292
-LastUsed=20261023
+LastUsed=20261024
 
 [Window][Debug##Default]
 Pos=60,60
 Size=400,400
-LastUsed=20261023
+LastUsed=20261024
 
 [Window][Toolbar]
 Pos=0,20
 Size=2560,38
-LastUsed=20261023
+LastUsed=20261024
 
 [Window][StatusBar]
 Pos=0,1352
 Size=2560,32
-LastUsed=20261023
+LastUsed=20261024
 
 [Window][Не удалось запустить игру]
 Pos=649,356

editor/src/editor_app.cpp

@@ -145,6 +145,7 @@ void EditorApp::InitDefaultLevel() {
     selectedCutsceneEvent = -1;
     StopCutscenePreview();
     cutsceneCursor = 0;
+    InitDefaultLights();
     previewX = playerStartX*64+32; previewY = playerStartY*64+32; previewAngle = playerStartAngle;
     previewSceneCamera = true;
     ScrubCutscene(0);
@@ -171,6 +172,10 @@ bool EditorApp::SaveLevelToFile(const std::string& filepath, bool updateCurrentP
     h.cutsceneCount = static_cast<uint16_t>(cutscene.events.size());
     h.cutsceneStringCount = static_cast<uint16_t>(cutscene.strings.size());
     h.cutsceneFlags = cutscene.flags;
+    if(!ValidateLighting(GetLightingSettings(),lightSources.data(),lightSources.size(),error)) {statusMessage=error;return false;}
+    if(LightingNeedsBake()) BakeLighting();
+    h.lightCount=static_cast<uint16_t>(lightSources.size());
+    level.lighting.settings=GetLightingSettings();level.lighting.lights=lightSources;level.lighting.rgb=bakedLightRGB;
     bool success = AtomicWrite(filepath, [&](std::ofstream& out) {
         out.write(reinterpret_cast<const char*>(&h), sizeof(h));
         out.write(reinterpret_cast<const char*>(level.cells.data()), level.cells.size());
@@ -183,6 +188,9 @@ bool EditorApp::SaveLevelToFile(const std::string& filepath, bool updateCurrentP
             std::memcpy(bytes, encoded.data(), encoded.size());
             out.write(bytes, sizeof(bytes));
         }
+        out.write(reinterpret_cast<const char*>(&level.lighting.settings),sizeof(LightingSettings));
+        if(!lightSources.empty()) out.write(reinterpret_cast<const char*>(lightSources.data()),lightSources.size()*sizeof(EditorLightSource));
+        out.write(reinterpret_cast<const char*>(bakedLightRGB.data()),4096);
     });
     if (!success) { statusMessage = "Не удалось сохранить карту: " + filepath; return false; }
     if (updateCurrentPath) currentFilePath = filepath;
@@ -201,6 +209,14 @@ bool EditorApp::LoadLevel(const std::string& filepath) {
     ceilingColor = h.ceilingColor & 0xFFFFFF; floorColor = h.floorColor & 0xFFFFFF;
     sprites = std::move(candidate.sprites); transitions = std::move(candidate.transitions);
     cutscene = std::move(candidate.cutscene);
+    lightSources=std::move(candidate.lighting.lights);
+    const auto& ls=candidate.lighting.settings;
+    lightingMode=ls.mode;ambientLightLevel=ls.ambient;isFlashlightOn=ls.flashlight!=0;
+    flashlightRadius=ls.flashlightRadius;flashlightIntensity=ls.flashlightIntensity;flashlightCone=ls.flashlightCone;
+    bakedLightRGB=candidate.lighting.rgb;
+    for(int i=0;i<1024;++i) {auto c=bakedLightRGB[i];bakedLightmap[i]=(((c>>16)&255)+((c>>8)&255)+(c&255))/3;}
+    bakedLightingSignature=LightingBakeSignature(&map[0][0],lightSources,ambientLightLevel);
+    selectedLightIdx=draggingLightIdx=-1;
     selectedCutsceneEvent = -1; cutsceneCursor = 0; placeCameraPoint = false;
     ScrubCutscene(0);
     currentFilePath = filepath;
@@ -346,6 +362,42 @@ void EditorApp::CheckPlaytestProcess() {
 // -----------------------------------------------------------------------------
 // Undo / Redo
 // -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+// Lighting Subsystem: Static Lightmap Baking & Raytraced Shadowing
+// -----------------------------------------------------------------------------
+bool EditorApp::CastLightRay(int x1,int y1,int x2,int y2) const {
+    return LightingVisible(&map[0][0],x1,y1,x2,y2);
+}
+
+LightingSettings EditorApp::GetLightingSettings() const {
+    LightingSettings s;
+    s.mode=lightingMode;s.ambient=ambientLightLevel;s.flashlight=isFlashlightOn;
+    s.flashlightRadius=flashlightRadius;s.flashlightIntensity=flashlightIntensity;s.flashlightCone=flashlightCone;
+    return s;
+}
+
+bool EditorApp::LightingNeedsBake() const {
+    return bakedLightingSignature!=LightingBakeSignature(&map[0][0],lightSources,ambientLightLevel);
+}
+
+void EditorApp::BakeLighting() {
+    bakedLightRGB=BakeLightingRGB(&map[0][0],lightSources,ambientLightLevel);
+    for(int i=0;i<1024;++i) {
+        uint32_t c=bakedLightRGB[i];
+        bakedLightmap[i]=static_cast<uint8_t>((((c>>16)&255)+((c>>8)&255)+(c&255))/3);
+    }
+    bakedLightingSignature=LightingBakeSignature(&map[0][0],lightSources,ambientLightLevel);
+    statusMessage="Постоянный свет запечён. Динамические источники рассчитываются отдельно.";
+}
+
+void EditorApp::InitDefaultLights() {
+    lightSources.clear();
+    lightingMode=LIGHTING_MODE_DYNAMIC;ambientLightLevel=40;isFlashlightOn=true;
+    flashlightRadius=384;flashlightIntensity=240;flashlightCone=45;
+    selectedLightIdx=draggingLightIdx=-1;
+    BakeLighting();
+}
+
 LevelSnapshot EditorApp::CaptureSnapshot() const {
     LevelSnapshot s;
     std::memcpy(s.map, map, sizeof(map));
@@ -357,6 +409,8 @@ LevelSnapshot EditorApp::CaptureSnapshot() const {
     s.sprites = sprites;
     s.transitions = transitions;
     s.cutscene = cutscene;
+    s.lightSources = lightSources;
+    s.lightingSettings=GetLightingSettings();s.bakedRGB=bakedLightRGB;s.bakedSignature=bakedLightingSignature;
     return s;
 }
 
@@ -371,6 +425,13 @@ void EditorApp::RestoreSnapshot(const LevelSnapshot& s) {
     StopCutscenePreview();
     transitions = s.transitions;
     cutscene = s.cutscene;
+    lightSources = s.lightSources;
+    lightingMode=s.lightingSettings.mode;ambientLightLevel=s.lightingSettings.ambient;isFlashlightOn=s.lightingSettings.flashlight!=0;
+    flashlightRadius=s.lightingSettings.flashlightRadius;flashlightIntensity=s.lightingSettings.flashlightIntensity;flashlightCone=s.lightingSettings.flashlightCone;
+    bakedLightRGB=s.bakedRGB;bakedLightingSignature=s.bakedSignature;
+    for(int i=0;i<1024;++i) {auto c=bakedLightRGB[i];bakedLightmap[i]=(((c>>16)&255)+((c>>8)&255)+(c&255))/3;}
+    selectedLightIdx = -1;
+    draggingLightIdx = -1;
     selectedCutsceneEvent = -1; placeCameraPoint = false;
     ScrubCutscene(cutsceneCursor);
     selectedSpriteIdx = -1;
@@ -1276,6 +1337,21 @@ void EditorApp::ApplyTool(int gx, int gy) {
             if (SetCell(gx, gy, CELL_EMPTY)) { playerStartX = gx; playerStartY = gy; }
             break;
         case TOOL_SPRITE_SPAWN:
+            if (pendingSpawnArchetype == 99) {
+                if (lightSources.size() < MAX_EDITOR_LIGHTS) {
+                    if(lightingMode==0)lightingMode=2;
+                    EditorLightSource nl;
+                    nl.x = gx * 64 + 32; nl.y = gy * 64 + 32;
+                    lightSources.push_back(nl);
+                    selectedLightIdx = static_cast<int>(lightSources.size()) - 1;
+                    selectedSpriteIdx = -1; selectedTransitionIdx = -1;
+                    BakeLighting();
+                    statusMessage = "Источник света создан на карте.";
+                } else {
+                    statusMessage = "Лимит источников света карты: 13.";
+                }
+                break;
+            }
             if (sprites.size() < MAX_LEVEL_SPRITES) {
                 SpriteEntry sprite{};
                 sprite.x = gx * 64 + 32; sprite.y = gy * 64 + 32;
@@ -1303,7 +1379,7 @@ void EditorApp::ApplyTool(int gx, int gy) {
                     SetSpriteEntityData(sprite, ENTITY_ARCHETYPE_PROP, 100, 0, 0);
                 }
                 sprites.push_back(sprite);
-                selectedSpriteIdx = static_cast<int>(sprites.size()) - 1;
+                selectedSpriteIdx = static_cast<int>(sprites.size()) - 1; selectedLightIdx=-1;
                 selectedTransitionIdx = -1;
             }
             break;
@@ -1339,6 +1415,11 @@ void EditorApp::FloodFill(int startX, int startY, uint8_t targetType, uint8_t fi
 }
 
 void EditorApp::DuplicateSelectedEntity() {
+    if(selectedLightIdx>=0 && selectedLightIdx<static_cast<int>(lightSources.size())) {
+        if(lightSources.size()>=MAX_EDITOR_LIGHTS){statusMessage="Лимит: 13 источников карты.";return;}
+        auto copy=lightSources[selectedLightIdx];copy.x=(std::min)(2047,copy.x+32);copy.y=(std::min)(2047,copy.y+32);
+        PushUndo();lightSources.push_back(copy);selectedLightIdx=static_cast<int>(lightSources.size())-1;return;
+    }
     if (selectedSpriteIdx >= 0 && selectedSpriteIdx < static_cast<int>(sprites.size())) {
         if (sprites.size() >= MAX_LEVEL_SPRITES) {
             statusMessage = "Лимит спрайтов на карте достигнут (макс. 32).";
@@ -1355,6 +1436,9 @@ void EditorApp::DuplicateSelectedEntity() {
 }
 
 void EditorApp::DeleteSelectedEntity() {
+    if(selectedLightIdx>=0 && selectedLightIdx<static_cast<int>(lightSources.size())) {
+        PushUndo();lightSources.erase(lightSources.begin()+selectedLightIdx);selectedLightIdx=draggingLightIdx=-1;return;
+    }
     if (selectedSpriteIdx >= 0 && selectedSpriteIdx < static_cast<int>(sprites.size())) {
         PushUndo();
         sprites.erase(sprites.begin() + selectedSpriteIdx);
@@ -1370,6 +1454,10 @@ void EditorApp::DeleteSelectedEntity() {
 }
 
 void EditorApp::FocusSelectedEntity() {
+    if(selectedLightIdx>=0 && selectedLightIdx<static_cast<int>(lightSources.size())) {
+        canvasPanX=150.0f-lightSources[selectedLightIdx].x/64.0f*canvasZoom;
+        canvasPanY=150.0f-lightSources[selectedLightIdx].y/64.0f*canvasZoom;return;
+    }
     if (selectedSpriteIdx >= 0 && selectedSpriteIdx < static_cast<int>(sprites.size())) {
         int gx = sprites[selectedSpriteIdx].x / 64;
         int gy = sprites[selectedSpriteIdx].y / 64;
@@ -1768,6 +1856,51 @@ void EditorApp::RenderToolbar() {
     ImGui::SeparatorEx(ImGuiSeparatorFlags_Vertical);
     ImGui::SameLine();
 
+    // Lighting Controls in Toolbar
+    ImGui::PushStyleColor(ImGuiCol_Button, ImVec4(0.80f, 0.50f, 0.05f, 1.0f));
+    ImGui::PushStyleColor(ImGuiCol_ButtonHovered, ImVec4(0.95f, 0.65f, 0.10f, 1.0f));
+    if (ImGui::Button(" 💡 ЗАПЕЧЬ СВЕТ ")) {
+        PushUndo(); BakeLighting();
+    }
+    ImGui::PopStyleColor(2);
+    if (ImGui::IsItemHovered()) ImGui::SetTooltip("Запечь постоянное освещение (Lightmap) для всей карты с учетом стен и препятствий");
+
+    ImGui::SameLine();
+    const char* lModeBtn = (lightingMode == 0) ? " ☀ Свет: ВЫКЛ " :
+                           (lightingMode == 1) ? " 🕯 Свет: ЗАПЕЧЁН " :
+                                                 " ⚡ Свет: ДИНАМИКА ";
+    if (ImGui::Button(lModeBtn)) {
+        PushUndo(); lightingMode = (lightingMode + 1) % 3;
+        statusMessage = (lightingMode == 0) ? "Режим света: ВЫКЛ (Wolf3D flat)" :
+                        (lightingMode == 1) ? "Режим света: ЗАПЕЧЁННЫЙ (Lightmap)" :
+                                              "Режим света: ДИНАМИЧЕСКИЙ (Point lights + Flashlight)";
+    }
+    if (ImGui::IsItemHovered()) ImGui::SetTooltip("Переключение режима освещения (Без света / Запечённый / Динамический)");
+
+    ImGui::SameLine();
+    if (isFlashlightOn) {
+        ImGui::PushStyleColor(ImGuiCol_Button, ImVec4(0.18f, 0.55f, 0.70f, 1.0f));
+        if (ImGui::Button(" 🔦 Фонарик: ВКЛ ")) {PushUndo();isFlashlightOn = false;}
+        ImGui::PopStyleColor();
+    } else {
+        if (ImGui::Button(" 🔦 Фонарик: ВЫКЛ ")) {PushUndo();isFlashlightOn = true;}
+    }
+    if (ImGui::IsItemHovered()) ImGui::SetTooltip("Переключить фонарик игрока [F]");
+
+    ImGui::SameLine();
+    if (showLightHeatmap) {
+        ImGui::PushStyleColor(ImGuiCol_Button, ImVec4(0.70f, 0.40f, 0.10f, 1.0f));
+        if (ImGui::Button(" 🗺 Карта: ВКЛ ")) showLightHeatmap = false;
+        ImGui::PopStyleColor();
+    } else {
+        if (ImGui::Button(" 🗺 Карта: ВЫКЛ ")) showLightHeatmap = true;
+    }
+    if (ImGui::IsItemHovered()) ImGui::SetTooltip("Отображать световую карту (Heatmap) на 2D сетке");
+
+    ImGui::SameLine();
+    ImGui::SeparatorEx(ImGuiSeparatorFlags_Vertical);
+    ImGui::SameLine();
+
     // Tools
     auto ToolButton = [&](const char* label, ToolMode mode) {
         bool active = (currentTool == mode);
@@ -1889,6 +2022,16 @@ void EditorApp::RenderGridCanvas() {
 
             ImU32 col = GetCellColor(map[y][x]);
             drawList->AddRectFilled(tileP0, tileP1, col);
+
+            if (showLightHeatmap) {
+                uint8_t l = bakedLightmap[y * MAP_GRID_W + x];
+                ImU32 lightTint = (l < 50) ? IM_COL32(10, 15, 30, 160) :
+                                  (l < 100) ? IM_COL32(30, 30, 20, 100) :
+                                  (l < 180) ? IM_COL32(200, 160, 30, static_cast<int>((l - 100) * 0.7f)) :
+                                              IM_COL32(255, 220, 80, static_cast<int>(60 + (l - 180) * 0.6f));
+                drawList->AddRectFilled(tileP0, tileP1, lightTint);
+            }
+
             drawList->AddRect(tileP0, tileP1, IM_COL32(50, 50, 55, 120), 0.0f, 0, 1.0f);
 
             if (map[y][x] == CELL_PORTAL) {
@@ -1963,6 +2106,41 @@ void EditorApp::RenderGridCanvas() {
         );
     }
 
+    // 2b. Draw Light Sources on Map Canvas
+    int hoveredLight = -1;
+    for (size_t i = 0; i < lightSources.size(); ++i) {
+        float lx = lightSources[i].x / 64.0f;
+        float ly = lightSources[i].y / 64.0f;
+        ImVec2 lcPos = ImVec2(gridOrigin.x + lx * tileSize, gridOrigin.y + ly * tileSize);
+
+        float dx = mousePos.x - lcPos.x;
+        float dy = mousePos.y - lcPos.y;
+        float r = tileSize * 0.45f;
+        if (std::sqrt(dx * dx + dy * dy) < r) {
+            hoveredLight = static_cast<int>(i);
+        }
+
+        if (static_cast<int>(i) == selectedLightIdx || static_cast<int>(i) == hoveredLight) {
+            float radPix = (lightSources[i].radius / 64.0f) * tileSize;
+            drawList->AddCircle(lcPos, radPix, IM_COL32(255, 210, 40, 160), 48, 1.5f);
+            drawList->AddCircleFilled(lcPos, radPix, IM_COL32(255, 210, 40, 18));
+        }
+
+        uint32_t c = lightSources[i].color;
+        ImU32 lightCol = IM_COL32((c >> 16) & 0xFF, (c >> 8) & 0xFF, c & 0xFF, 255);
+        ImU32 haloCol  = IM_COL32((c >> 16) & 0xFF, (c >> 8) & 0xFF, c & 0xFF, 70);
+
+        drawList->AddCircleFilled(lcPos, tileSize * 0.38f, haloCol);
+        drawList->AddCircleFilled(lcPos, tileSize * 0.22f, lightCol);
+        drawList->AddCircleFilled(lcPos, tileSize * 0.08f, IM_COL32(255, 255, 255, 255));
+
+        if (static_cast<int>(i) == selectedLightIdx) {
+            drawList->AddCircle(lcPos, tileSize * 0.42f, IM_COL32(255, 255, 0, 255), 24, 2.0f);
+        } else if (static_cast<int>(i) == hoveredLight) {
+            drawList->AddCircle(lcPos, tileSize * 0.42f, IM_COL32(255, 255, 200, 200), 24, 1.5f);
+        }
+    }
+
     // 3. Draw Player Spawn Point & Direction Cone
     {
         ImVec2 pPos = ImVec2(gridOrigin.x + (playerStartX + 0.5f) * tileSize,
@@ -2010,12 +2188,18 @@ void EditorApp::RenderGridCanvas() {
             drawList->PopClipRect(); return;
         }
         if (placeCameraPoint) { drawList->PopClipRect(); return; }
-        // Left Click: start action (drag sprite OR paint)
+        // Left Click: start action (drag light OR drag sprite OR paint)
         if (ImGui::IsMouseClicked(ImGuiMouseButton_Left)) {
-            if (currentTool == TOOL_SPRITE_SPAWN && hoveredSprite >= 0) {
+            if (hoveredLight >= 0) {
+                draggingLightIdx = hoveredLight;
+                selectedLightIdx = hoveredLight;
+                selectedSpriteIdx = -1;
+                selectedTransitionIdx = -1;
+                PushUndo();
+            } else if (currentTool == TOOL_SPRITE_SPAWN && hoveredSprite >= 0) {
                 // Start dragging existing sprite
                 draggingSpriteIdx = hoveredSprite;
-                selectedSpriteIdx = hoveredSprite;
+                selectedSpriteIdx = hoveredSprite; selectedLightIdx=-1;
                 selectedTransitionIdx = -1;
                 PushUndo();
             } else if (inGrid) {
@@ -2023,7 +2207,7 @@ void EditorApp::RenderGridCanvas() {
                 if (map[hoverGy][hoverGx] == CELL_PORTAL) {
                     for (size_t i = 0; i < transitions.size(); ++i) {
                         if (transitions[i].triggerCellX == hoverGx && transitions[i].triggerCellY == hoverGy) {
-                            selectedTransitionIdx = static_cast<int>(i);
+                            selectedTransitionIdx = static_cast<int>(i); selectedLightIdx=-1;
                             selectedSpriteIdx = -1;
                             break;
                         }
@@ -2035,9 +2219,14 @@ void EditorApp::RenderGridCanvas() {
             }
         }
 
-        // Left Drag: continue painting OR move sprite
+        // Left Drag: continue painting OR move light OR move sprite
         if (ImGui::IsMouseDown(ImGuiMouseButton_Left)) {
-            if (draggingSpriteIdx >= 0) {
+            if (draggingLightIdx >= 0) {
+                float wx = (mousePos.x - gridOrigin.x) / tileSize;
+                float wy = (mousePos.y - gridOrigin.y) / tileSize;
+                lightSources[draggingLightIdx].x = std::clamp(static_cast<int32_t>(wx * 64.0f), 32, (MAP_GRID_W - 1) * 64);
+                lightSources[draggingLightIdx].y = std::clamp(static_cast<int32_t>(wy * 64.0f), 32, (MAP_GRID_H - 1) * 64);
+            } else if (draggingSpriteIdx >= 0) {
                 float wx = (mousePos.x - gridOrigin.x) / tileSize;
                 float wy = (mousePos.y - gridOrigin.y) / tileSize;
                 sprites[draggingSpriteIdx].x = static_cast<int32_t>(wx * 64.0f);
@@ -2049,6 +2238,10 @@ void EditorApp::RenderGridCanvas() {
 
         // Left Release: end drag / stroke
         if (ImGui::IsMouseReleased(ImGuiMouseButton_Left)) {
+            if (draggingLightIdx >= 0) {
+                draggingLightIdx = -1;
+                BakeLighting();
+            }
             draggingSpriteIdx = -1;
             strokeSnapshotTaken = false;
         }
@@ -2164,6 +2357,7 @@ void EditorApp::RenderTilePalette() {
     SpawnerBtn("+ Переключатель [E]", ENTITY_ARCHETYPE_SWITCH, ImVec4(0.70f, 0.40f, 0.10f, 1.0f));
     SpawnerBtn("+ Бочка (Взрывная)", ENTITY_ARCHETYPE_BARREL, ImVec4(0.70f, 0.25f, 0.10f, 1.0f));
     SpawnerBtn("+ Декорация (Проп)", ENTITY_ARCHETYPE_PROP, ImVec4(0.35f, 0.35f, 0.40f, 1.0f));
+    SpawnerBtn("+ Источник света", 99, ImVec4(0.85f, 0.60f, 0.10f, 1.0f));
 }
 
 void EditorApp::RenderHierarchy() {
@@ -2195,7 +2389,7 @@ void EditorApp::RenderHierarchy() {
                     spr.textureId = defaultTex;
                     SetSpriteEntityData(spr, archetype, (archetype == ENTITY_ARCHETYPE_GUARD ? 60 : 100), (archetype == ENTITY_ARCHETYPE_GUARD ? 2 : 0), (archetype == ENTITY_ARCHETYPE_GUARD ? 6 : 0));
                     sprites.push_back(spr);
-                    selectedSpriteIdx = static_cast<int>(sprites.size()) - 1;
+                    selectedSpriteIdx = static_cast<int>(sprites.size()) - 1; selectedLightIdx=-1;
                     selectedTransitionIdx = -1;
                     statusMessage = "Сущность создана на сцене.";
                 } else {
@@ -2210,6 +2404,19 @@ void EditorApp::RenderHierarchy() {
         AddEntityItem("🕹 Рычаг / Переключатель", ENTITY_ARCHETYPE_SWITCH);
         AddEntityItem("💥 Взрывная бочка", ENTITY_ARCHETYPE_BARREL);
         AddEntityItem("🏺 Декорация / Проп", ENTITY_ARCHETYPE_PROP);
+        if (ImGui::MenuItem("💡 Источник света")) {
+            if (lightSources.size() < MAX_EDITOR_LIGHTS) {
+                PushUndo();
+                if(lightingMode==0)lightingMode=2;
+                EditorLightSource nl;
+                nl.x = (playerStartX + 1) * 64 + 32; nl.y = (playerStartY + 1) * 64 + 32;
+                lightSources.push_back(nl);
+                selectedLightIdx = static_cast<int>(lightSources.size()) - 1;
+                selectedSpriteIdx = -1; selectedTransitionIdx = -1;
+                BakeLighting();
+                statusMessage = "Источник света создан на сцене.";
+            }
+        }
         ImGui::EndPopup();
     }
 
@@ -2228,7 +2435,7 @@ void EditorApp::RenderHierarchy() {
     char playerLabel[96];
     snprintf(playerLabel, sizeof(playerLabel), "👤 Игрок [Spawn: (%d, %d)]", playerStartX, playerStartY);
     if (MatchesSearch(playerLabel) || MatchesSearch("player") || MatchesSearch("игрок")) {
-        bool isPlayerSelected = (selectedSpriteIdx == -1 && selectedTransitionIdx == -1);
+        bool isPlayerSelected = (selectedSpriteIdx == -1 && selectedTransitionIdx == -1 && selectedLightIdx == -1);
         if (ImGui::Selectable(playerLabel, isPlayerSelected)) {
             selectedSpriteIdx = -1;
             selectedTransitionIdx = -1;
@@ -2269,25 +2476,25 @@ void EditorApp::RenderHierarchy() {
 
         bool isSel = (selectedSpriteIdx == static_cast<int>(i));
         if (ImGui::Selectable(label, isSel)) {
-            selectedSpriteIdx = static_cast<int>(i);
+            selectedSpriteIdx = static_cast<int>(i); selectedLightIdx=-1;
             selectedTransitionIdx = -1;
         }
         if (ImGui::IsItemHovered() && ImGui::IsMouseDoubleClicked(ImGuiMouseButton_Left)) {
-            selectedSpriteIdx = static_cast<int>(i);
+            selectedSpriteIdx = static_cast<int>(i); selectedLightIdx=-1;
             FocusSelectedEntity();
         }
         if (ImGui::BeginPopupContextItem()) {
             if (ImGui::MenuItem("📋 Дублировать", "Ctrl+D")) {
-                selectedSpriteIdx = static_cast<int>(i);
+                selectedSpriteIdx = static_cast<int>(i); selectedLightIdx=-1;
                 DuplicateSelectedEntity();
             }
             if (ImGui::MenuItem("🎯 Сфокусировать", "F")) {
-                selectedSpriteIdx = static_cast<int>(i);
+                selectedSpriteIdx = static_cast<int>(i); selectedLightIdx=-1;
                 FocusSelectedEntity();
             }
             ImGui::Separator();
             if (ImGui::MenuItem("🗑 Удалить", "Del")) {
-                selectedSpriteIdx = static_cast<int>(i);
+                selectedSpriteIdx = static_cast<int>(i); selectedLightIdx=-1;
                 DeleteSelectedEntity();
             }
             ImGui::EndPopup();
@@ -2326,6 +2533,15 @@ void EditorApp::RenderHierarchy() {
         ImGui::TreePop();
     }
 
+    if(ImGui::TreeNodeEx("Источники света",ImGuiTreeNodeFlags_DefaultOpen)) {
+        for(int i=0;i<static_cast<int>(lightSources.size());++i) {
+            char label[100];snprintf(label,sizeof(label),"Свет #%d: %s##light_%d",i+1,
+                lightSources[i].lightType==LIGHT_TYPE_STATIC?"постоянный":"динамический",i);
+            if(ImGui::Selectable(label,selectedLightIdx==i)){selectedLightIdx=i;selectedSpriteIdx=selectedTransitionIdx=-1;}
+        }
+        if(ImGui::SmallButton("+ Добавить свет")) {pendingSpawnArchetype=99;currentTool=TOOL_SPRITE_SPAWN;statusMessage="Выберите место источника на карте.";}
+        ImGui::TreePop();
+    }
     // 3. Sublevel Transitions Category
     char transHdr[64];
     snprintf(transHdr, sizeof(transHdr), "🌀 Порталы перехода (%zu)", transitions.size());
@@ -2340,18 +2556,18 @@ void EditorApp::RenderHierarchy() {
 
             bool isSel = (selectedTransitionIdx == static_cast<int>(i));
             if (ImGui::Selectable(label, isSel)) {
-                selectedTransitionIdx = static_cast<int>(i);
+                selectedTransitionIdx = static_cast<int>(i); selectedLightIdx=-1;
                 selectedSpriteIdx = -1;
             }
             if (ImGui::BeginPopupContextItem()) {
                 if (ImGui::MenuItem("🎯 Сфокусировать", "F")) {
-                    selectedTransitionIdx = static_cast<int>(i);
+                    selectedTransitionIdx = static_cast<int>(i); selectedLightIdx=-1;
                     canvasPanX = 150.0f - (transitions[i].triggerCellX * canvasZoom);
                     canvasPanY = 150.0f - (transitions[i].triggerCellY * canvasZoom);
                 }
                 ImGui::Separator();
                 if (ImGui::MenuItem("🗑 Удалить портал", "Del")) {
-                    selectedTransitionIdx = static_cast<int>(i);
+                    selectedTransitionIdx = static_cast<int>(i); selectedLightIdx=-1;
                     DeleteSelectedEntity();
                 }
                 ImGui::EndPopup();
@@ -2370,6 +2586,10 @@ void EditorApp::RenderInspector() {
     ImGui::TextColored(ImVec4(0.2f, 0.8f, 1.0f, 1.0f), "ИНСПЕКТОР СВОЙСТВ (INSPECTOR)");
     ImGui::Separator();
 
+    if(selectedLightIdx>=0 && selectedLightIdx<static_cast<int>(lightSources.size())) {RenderLightingInspector();return;}
+    RenderLightingSettings();
+    ImGui::Separator();
+
     // Case 1: Sprite Entity Selected
     if (selectedSpriteIdx >= 0 && selectedSpriteIdx < static_cast<int>(sprites.size())) {
         auto& spr = sprites[selectedSpriteIdx];
@@ -2807,3 +3027,5 @@ void EditorApp::RenderExportGameModal() {
     }
 }
 
+
+#include "editor_lighting.inl"

editor/src/editor_app.h

@@ -9,6 +9,7 @@
 #include "level_format.h"
 #include "cutscene_preview.h"
 #include "preview_protocol.h"
+#include "lighting_format.h"
 #include <memory>
 #include <string>
 #include <vector>
@@ -33,6 +34,10 @@ struct LevelSnapshot {
     std::vector<SpriteEntry> sprites;
     std::vector<LevelTransition> transitions;
     CutsceneTrack cutscene;
+    std::vector<EditorLightSource> lightSources;
+    LightingSettings lightingSettings;
+    std::array<uint32_t,1024> bakedRGB;
+    uint64_t bakedSignature=0;
 };
 
 class EditorApp {
@@ -107,10 +112,31 @@ public:
     uint8_t pendingSpawnArchetype = ENTITY_ARCHETYPE_PROP;
     int selectedSpriteIdx = -1;
     int selectedTransitionIdx = -1;
+    int selectedLightIdx = -1;
+    int draggingLightIdx = -1;
     bool isEngineRunning = false;
     std::string statusMessage = "Готов к работе. EblanStudio v1.2";
     std::string currentFilePath = "..\\assets\\map.dat";
 
+    // Lighting Subsystem State & Light Sources
+    int lightingMode = 2; // 0 = None, 1 = Baked, 2 = Dynamic
+    int ambientLightLevel = 40;
+    bool isFlashlightOn = true;
+    int flashlightRadius = 384;
+    int flashlightIntensity = 240;
+    int flashlightCone = 45;
+    bool showLightHeatmap = false;
+    uint8_t bakedLightmap[MAP_TOTAL_CELLS] = { 0 };
+    std::array<uint32_t,1024> bakedLightRGB{};
+    uint64_t bakedLightingSignature = 0;
+    std::vector<EditorLightSource> lightSources;
+
+    void BakeLighting();
+    void InitDefaultLights();
+    bool CastLightRay(int x1, int y1, int x2, int y2) const;
+    bool LightingNeedsBake() const;
+    LightingSettings GetLightingSettings() const;
+
     // Viewport pan & zoom
     float canvasZoom = 20.0f; // pixels per tile
     float canvasPanX = 20.0f;
@@ -121,6 +147,8 @@ public:
     struct ID3D11ShaderResourceView* textureSRVs[16] = { nullptr };
 
 private:
+    void RenderLightingInspector();
+    void RenderLightingSettings();
     bool EnsureEnginePreview();
     void StopEnginePreview();
     void UpdateEnginePreview();

editor/src/editor_code.inl

@@ -18,6 +18,8 @@ struct CodeFileEntry {
 };
 
 static const CodeFileEntry g_ProjectCodeFiles[] = {
+    { "engine_light.inc (Light Sources & Bursts)", "include/engine_light.inc" },
+    { "engine_lighting_core.inc (Static RGB Bake & Dynamic Lighting)", "include/engine_lighting_core.inc" },
     { "engine_gameplay.inc (Events, Hooks & Dialogs)", "include/engine_gameplay.inc" },
     { "engine_combat.inc (Weapons & Combat)", "include/engine_combat.inc" },
     { "engine_entity.inc (Entities & AI)", "include/engine_entity.inc" },

editor/src/editor_lighting.inl

@@ -0,0 +1,72 @@
+void EditorApp::RenderLightingSettings() {
+    if(!ImGui::CollapsingHeader("Освещение карты",ImGuiTreeNodeFlags_DefaultOpen)) return;
+    auto edited=GetLightingSettings(); bool changed=false,activated=false;
+    auto undoItem=[&](){activated|=ImGui::IsItemActivated();};
+    const char* modes[]={"Без освещения","Только запечённый","Запечённый + динамический"};
+    int mode=edited.mode;
+    changed|=ImGui::Combo("Режим света",&mode,modes,3);undoItem();edited.mode=mode;
+    int ambient=edited.ambient;
+    changed|=ImGui::SliderInt("Фоновый свет",&ambient,0,255);undoItem();edited.ambient=ambient;
+    bool flash=edited.flashlight!=0;
+    changed|=ImGui::Checkbox("Фонарик игрока",&flash);undoItem();edited.flashlight=flash;
+    if(flash) {
+        int radius=edited.flashlightRadius,intensity=edited.flashlightIntensity,cone=edited.flashlightCone;
+        changed|=ImGui::SliderInt("Дальность фонаря",&radius,32,2048);undoItem();
+        changed|=ImGui::SliderInt("Яркость фонаря",&intensity,0,255);undoItem();
+        changed|=ImGui::SliderInt("Полуугол фонаря",&cone,1,96);undoItem();
+        edited.flashlightRadius=radius;edited.flashlightIntensity=intensity;edited.flashlightCone=cone;
+    }
+    if(activated)PushUndo();
+    if(changed) {
+        lightingMode=edited.mode;ambientLightLevel=edited.ambient;isFlashlightOn=edited.flashlight!=0;
+        flashlightRadius=edited.flashlightRadius;flashlightIntensity=edited.flashlightIntensity;flashlightCone=edited.flashlightCone;
+    }
+    if(ImGui::Button("Запечь постоянный свет",ImVec2(-1,0))) {PushUndo();BakeLighting();}
+    if(LightingNeedsBake()) ImGui::TextWrapped("Геометрия или постоянный свет изменены: нужно запечь. При сохранении и F5 запекание выполняется автоматически.");
+    else ImGui::TextDisabled("Постоянный свет запечён");
+    ImGui::Checkbox("Карта запечённого света",&showLightHeatmap);
+    ImGui::TextWrapped("Постоянные источники входят в запекание. Точечные, мерцающие и пульсирующие работают в динамическом режиме.");
+}
+
+void EditorApp::RenderLightingInspector() {
+    auto& light=lightSources[selectedLightIdx];
+    ImGui::Text("Источник света #%d / %d",selectedLightIdx+1,MAX_EDITOR_LIGHTS);
+    if(ImGui::Button("Удалить источник")) {
+        PushUndo();lightSources.erase(lightSources.begin()+selectedLightIdx);selectedLightIdx=-1;return;
+    }
+    ImGui::SameLine();
+    if(ImGui::Button("Копировать")) {
+        if(lightSources.size()<MAX_EDITOR_LIGHTS) {
+            auto copy=light;copy.x=(std::min)(2047,copy.x+32);copy.y=(std::min)(2047,copy.y+32);
+            PushUndo();lightSources.push_back(copy);selectedLightIdx=static_cast<int>(lightSources.size())-1;
+        } else statusMessage="Лимит: 13 источников карты; фонарик и вспышки имеют отдельные места.";
+        return;
+    }
+    EditorLightSource edited=light;bool changed=false,activated=false;
+    auto undoItem=[&](){activated|=ImGui::IsItemActivated();};
+    bool active=(edited.flags&LIGHT_FLAG_ACTIVE)!=0;
+    changed|=ImGui::Checkbox("Включён",&active);undoItem();
+    edited.flags=(edited.flags&~LIGHT_FLAG_ACTIVE)|(active?LIGHT_FLAG_ACTIVE:0);
+    float x=edited.x/64.0f,y=edited.y/64.0f;
+    if(ImGui::SliderFloat("Позиция X",&x,0,31.98f,"%.2f")){edited.x=static_cast<int>(x*64);changed=true;}undoItem();
+    if(ImGui::SliderFloat("Позиция Y",&y,0,31.98f,"%.2f")){edited.y=static_cast<int>(y*64);changed=true;}undoItem();
+    changed|=ImGui::SliderInt("Радиус",&edited.radius,32,2048);undoItem();
+    changed|=ImGui::SliderInt("Интенсивность",&edited.intensity,0,255);undoItem();edited.curIntensity=edited.intensity;
+    float color[]={((edited.color>>16)&255)/255.f,((edited.color>>8)&255)/255.f,(edited.color&255)/255.f};
+    if(ImGui::ColorEdit3("Цвет света",color)) {
+        edited.color=(uint32_t(color[0]*255)<<16)|(uint32_t(color[1]*255)<<8)|uint32_t(color[2]*255);changed=true;
+    }undoItem();
+    const char* types[]={"Постоянный (запекание)","Точечный (динамический)","Пульсирующий (динамический)"};
+    int type=edited.lightType==LIGHT_TYPE_STATIC?0:edited.lightType==LIGHT_TYPE_PULSE?2:1;
+    if(ImGui::Combo("Тип света",&type,types,3)){edited.lightType=type==0?LIGHT_TYPE_STATIC:type==1?LIGHT_TYPE_POINT:LIGHT_TYPE_PULSE;changed=true;}undoItem();
+    bool shadows=(edited.flags&LIGHT_FLAG_SHADOWS)!=0,flicker=(edited.flags&LIGHT_FLAG_FLICKER)!=0;
+    changed|=ImGui::Checkbox("Тени от стен и дверей",&shadows);undoItem();
+    edited.flags=(edited.flags&~LIGHT_FLAG_SHADOWS)|(shadows?LIGHT_FLAG_SHADOWS:0);
+    if(edited.lightType!=LIGHT_TYPE_STATIC) {
+        changed|=ImGui::Checkbox("Мерцание факела",&flicker);undoItem();
+        edited.flags=(edited.flags&~LIGHT_FLAG_FLICKER)|(flicker?LIGHT_FLAG_FLICKER:0);
+    }
+    if(activated)PushUndo();
+    if(changed)light=edited;
+    RenderLightingSettings();
+}

editor/src/editor_viewport.inl

@@ -41,7 +41,7 @@ bool EditorApp::EnsureEnginePreview() {
     if (!previewPacket) return fail("Не удалось открыть буфер игрового вида.");
     // Initialize in place: no large packet on the thread's stack.
     memset(previewPacket, 0, sizeof(*previewPacket));
-    previewPacket->magic = 0x56504245; previewPacket->version = 1; previewPacket->parentPid = GetCurrentProcessId();
+    previewPacket->magic = 0x56504245; previewPacket->version = 2; previewPacket->parentPid = GetCurrentProcessId();
     std::string command = "\"" + engine + "\" \"--preview:" + name + "\"";
     STARTUPINFOA si{}; si.cb = sizeof(si); si.dwFlags = STARTF_USESHOWWINDOW; si.wShowWindow = SW_HIDE;
     if (!CreateProcessA(engine.c_str(), command.data(), nullptr, nullptr, FALSE, CREATE_NO_WINDOW, nullptr,
@@ -105,6 +105,14 @@ void EditorApp::UpdateEnginePreview() {
     if (!sprites.empty()) memcpy(previewPacket->sprites,sprites.data(),previewPacket->spriteCount*sizeof(SpriteEntry));
     previewPacket->cinematic = scene && cutscenePreview.active;
     previewPacket->fade = scene ? cutscenePreview.fade : 0;
+    previewPacket->lightingMode = static_cast<uint32_t>(lightingMode);
+    previewPacket->ambientLight = static_cast<uint32_t>(ambientLightLevel);
+    previewPacket->flashlight = isFlashlightOn ? 1 : 0;
+    previewPacket->lightCount = static_cast<uint32_t>((std::min)(lightSources.size(), size_t(MAX_EDITOR_LIGHTS)));
+    previewPacket->flashlightRadius=flashlightRadius;previewPacket->flashlightIntensity=flashlightIntensity;previewPacket->flashlightCone=flashlightCone;
+    if(!lightSources.empty()) memcpy(previewPacket->lights,lightSources.data(),previewPacket->lightCount*sizeof(EditorLightSource));
+    memcpy(previewPacket->bakedRGB,bakedLightRGB.data(),4096);
+    previewPacket->lightTick=static_cast<uint32_t>(GetTickCount64()*60/1000);
     memset(previewPacket->subtitle,0,96);
     if (scene && cutscenePreview.subtitle >= 0 && cutscenePreview.subtitle < static_cast<int>(cutscene.strings.size())) {
         std::string encoded;

editor/src/level_format.h

@@ -6,7 +6,7 @@
 // ==============================================================================
 
 constexpr uint32_t MAP_MAGIC = 0x4E4C4245; // 'EBLN'
-constexpr uint16_t MAP_FORMAT_VERSION = 4;  // v4 adds a cutscene track and CP1251 string pool
+constexpr uint16_t MAP_FORMAT_VERSION = 5;  // v5 adds authored lighting and baked RGB cells
 constexpr int MAP_GRID_W = 32;
 constexpr int MAP_GRID_H = 32;
 constexpr int MAP_TOTAL_CELLS = MAP_GRID_W * MAP_GRID_H; // 1024 bytes
@@ -66,7 +66,7 @@ struct LevelTransition {
 
 struct MapHeader {
     uint32_t magic;            // 'EBLN'
-    uint16_t version;          // Current writer: 4; reader also accepts v1/v2/v3
+    uint16_t version;          // Current writer: 5; reader also accepts v1/v2/v3/v4
     uint16_t mapWidth;         // 32
     uint16_t mapHeight;        // 32
     uint16_t playerStartX;     // Cell coordinate (0..31)
@@ -79,7 +79,8 @@ struct MapHeader {
     uint16_t cutsceneCount;    // v4 only; old versions ignore the remaining header fields
     uint16_t cutsceneStringCount;
     uint16_t cutsceneFlags;    // bit 0 = start automatically after entering this map
-    uint8_t  reserved[4];     // Total header remains 38 bytes
+    uint16_t lightCount;       // v5 only, authored lights (slots 1..13 in engine)
+    uint16_t lightingReserved; // must be zero in v5; header remains 38 bytes
 };
 
 struct CutsceneEvent {
@@ -135,3 +136,53 @@ static_assert(sizeof(MapHeader) == 38, "EBLN header layout changed");
 static_assert(sizeof(SpriteEntry) == 24, "EBLN sprite layout changed");
 static_assert(sizeof(LevelTransition) == 42, "EBLN transition layout changed");
 static_assert(sizeof(CutsceneEvent) == 16, "EBLN cutscene event layout changed");
+
+// Lighting Modes & Types (mirrors include/engine_defs.inc)
+enum LightingMode : uint32_t {
+    LIGHTING_MODE_NONE    = 0,
+    LIGHTING_MODE_BAKED   = 1,
+    LIGHTING_MODE_DYNAMIC = 2
+};
+
+enum LightType : uint32_t {
+    LIGHT_TYPE_STATIC     = 0,
+    LIGHT_TYPE_POINT      = 1,
+    LIGHT_TYPE_FLASHLIGHT = 2,
+    LIGHT_TYPE_BURST      = 3,
+    LIGHT_TYPE_PULSE      = 4
+};
+
+constexpr uint32_t LIGHT_FLAG_INACTIVE = 0;
+constexpr uint32_t LIGHT_FLAG_ACTIVE   = 1;
+constexpr uint32_t LIGHT_FLAG_SHADOWS  = 2;
+constexpr uint32_t LIGHT_FLAG_FLICKER  = 4;
+
+constexpr int MAX_EDITOR_LIGHTS = 13; // engine slots 0 / 14 / 15 are flashlight / muzzle / explosion
+
+#pragma pack(push, 1)
+struct EditorLightSource {
+    int32_t  x = 0;             // raw world units (cell * 64 + 32)
+    int32_t  y = 0;
+    int32_t  radius = 240;      // radius in raw world units
+    int32_t  intensity = 220;   // 0..255 base intensity
+    int32_t  curIntensity = 220;// 0..255 current intensity
+    int32_t  lightType = LIGHT_TYPE_POINT;
+    uint32_t flags = LIGHT_FLAG_ACTIVE | LIGHT_FLAG_SHADOWS | LIGHT_FLAG_FLICKER;
+    uint32_t color = 0x00FFB040;// 00RRGGBBh tint (warm torch)
+    int32_t  decaySpeed = 0;
+    int32_t  flickerPhase = 0;
+};
+#pragma pack(pop)
+static_assert(sizeof(EditorLightSource) == 40, "EditorLightSource size mismatch with MASM LightSource");
+
+struct LightingSettings {
+    uint32_t mode = LIGHTING_MODE_NONE;
+    uint32_t ambient = 40;
+    uint32_t flashlight = 1;
+    uint32_t flashlightRadius = 384;
+    uint32_t flashlightIntensity = 240;
+    uint32_t flashlightCone = 45;
+    uint32_t baked = 1;
+    uint32_t reserved = 0;
+};
+static_assert(sizeof(LightingSettings) == 32, "Lighting settings wire layout changed");

editor/src/level_io.h

@@ -1,6 +1,7 @@
 #pragma once
 #include "level_format.h"
 #include "cutscene_format.h"
+#include "lighting_format.h"
 #include <array>
 #include <cstring>
 #include <fstream>
@@ -14,6 +15,7 @@ struct BinaryLevel {
     std::vector<SpriteEntry> sprites;
     std::vector<LevelTransition> transitions;
     CutsceneTrack cutscene;
+    LevelLighting lighting;
 };
 
 inline bool IsMapFilename(const char* name) {
@@ -63,6 +65,8 @@ inline bool ValidateLevel(const BinaryLevel& level, std::string& error) {
     }
     for (size_t i = 0; i < level.cells.size(); ++i)
         if (level.cells[i] == CELL_PORTAL && !triggers[i]) return fail("Портал не имеет настроенного перехода");
+    if(!ValidateLighting(level.lighting.settings,level.lighting.lights.data(),level.lighting.lights.size(),error)) return false;
+    for(auto c:level.lighting.rgb) if(c&0xFF000000) {error="Неверный цвет запечённого света";return false;}
     return ValidateCutscene(level.cutscene, level.cells.data(), level.transitions.size(), error);
 }
 
@@ -85,9 +89,12 @@ inline bool ReadLevelFile(const std::string& path, BinaryLevel& result, std::str
     if (eventCount > MAX_CUTSCENE_EVENTS || stringCount > MAX_CUTSCENE_STRINGS) {
         error = "Превышен лимит событий или строк кат-сцены"; return false;
     }
+    const size_t lightCount=h.version>=5?h.lightCount:0;
+    if(lightCount>MAX_EDITOR_LIGHTS || (h.version>=5&&h.lightingReserved)) {error="Неверный заголовок освещения";return false;}
     const size_t expected = sizeof(MapHeader) + MAP_TOTAL_CELLS +
         h.spriteCount * sizeof(SpriteEntry) + transitionCount * sizeof(LevelTransition) +
-        eventCount * sizeof(CutsceneEvent) + stringCount * CUTSCENE_STRING_BYTES;
+        eventCount * sizeof(CutsceneEvent) + stringCount * CUTSCENE_STRING_BYTES +
+        (h.version>=5?sizeof(LightingSettings)+lightCount*sizeof(EditorLightSource)+4096:0);
     if (fileSize != static_cast<std::streamoff>(expected)) {
         error = "Размер файла не соответствует заголовку карты"; return false;
     }
@@ -108,6 +115,12 @@ inline bool ReadLevelFile(const std::string& path, BinaryLevel& result, std::str
         if (!end) { error = "Строка кат-сцены не имеет завершающего нуля"; return false; }
         candidate.cutscene.strings.push_back(CutsceneDecode(bytes, static_cast<int>(end - bytes)));
     }
+    if(h.version>=5) {
+        in.read(reinterpret_cast<char*>(&candidate.lighting.settings),sizeof(LightingSettings));
+        candidate.lighting.lights.resize(lightCount);
+        if(lightCount)in.read(reinterpret_cast<char*>(candidate.lighting.lights.data()),lightCount*sizeof(EditorLightSource));
+        in.read(reinterpret_cast<char*>(candidate.lighting.rgb.data()),4096);
+    }
     if (!in) { error = "Не удалось прочитать карту целиком"; return false; }
     if (h.version == 1) for (auto& sprite : candidate.sprites) { sprite.x >>= 16; sprite.y >>= 16; }
     if (!ValidateLevel(candidate, error)) return false;

editor/src/lighting_format.h

@@ -0,0 +1,97 @@
+#pragma once
+#include "level_format.h"
+#include <array>
+#include <algorithm>
+#include <cstring>
+#include <string>
+#include <vector>
+
+struct LevelLighting {
+    LightingSettings settings;
+    std::vector<EditorLightSource> lights;
+    std::array<uint32_t,1024> rgb{}; // 00RRGGBB, baked static contribution + ambient
+    LevelLighting() { rgb.fill(0x282828); }
+};
+
+inline bool ValidateLighting(const LightingSettings& s, const EditorLightSource* lights, size_t count, std::string& error) {
+    if (s.mode>2 || s.ambient>255 || s.flashlight>1 || s.flashlightRadius<32 || s.flashlightRadius>2048 ||
+        s.flashlightIntensity>255 || s.flashlightCone<1 || s.flashlightCone>96 || s.baked!=1 || s.reserved || count>MAX_EDITOR_LIGHTS) {
+        error="Неверные параметры освещения"; return false;
+    }
+    for(size_t i=0;i<count;++i) {
+        const auto& l=lights[i];
+        if(l.x<0 || l.x>=2048 || l.y<0 || l.y>=2048 || l.radius<1 || l.radius>2048 || l.intensity<0 || l.intensity>255 ||
+           l.curIntensity<0 || l.curIntensity>255 || (l.lightType!=LIGHT_TYPE_STATIC && l.lightType!=LIGHT_TYPE_POINT && l.lightType!=LIGHT_TYPE_PULSE) || (l.flags&~7u) || (l.color&0xFF000000)) {
+            error="Неверные координаты, цвет или параметры источника света"; return false;
+        }
+    }
+    return true;
+}
+
+inline bool LightingWalkable(uint8_t cell) { return cell==0 || cell==6 || cell==10; }
+
+// Exact supercover grid traversal; corner crossings cannot leak diagonally through walls.
+inline bool LightingVisible(const uint8_t* cells,int x1,int y1,int x2,int y2) {
+    if(x1<0||x1>=2048||y1<0||y1>=2048||x2<0||x2>=2048||y2<0||y2>=2048) return false;
+    int cx=x1/64,cy=y1/64,ex=x2/64,ey=y2/64;
+    const int dx=std::abs(x2-x1),dy=std::abs(y2-y1),sx=x2>=x1?1:-1,sy=y2>=y1?1:-1;
+    int nx=sx>0?(cx+1)*64-x1:x1-cx*64,ny=sy>0?(cy+1)*64-y1:y1-cy*64;
+    auto free=[&](int x,int y){return x>=0&&x<32&&y>=0&&y<32&&LightingWalkable(cells[y*32+x]);};
+    // A wall-mounted source may start in a wall; every subsequent cell is tested.
+    for(int steps=0;steps<65;++steps) {
+        if(cx==ex&&cy==ey) return free(cx,cy);
+        const int a=dx?nx*dy:0x3FFFFFFF,b=dy?ny*dx:0x3FFFFFFF;
+        if(a==b) {
+            if(!free(cx+sx,cy)||!free(cx,cy+sy)) return false;
+            cx+=sx;cy+=sy;nx+=64;ny+=64;
+        } else if(a<b) {cx+=sx;nx+=64;} else {cy+=sy;ny+=64;}
+        if(!free(cx,cy)) return false;
+    }
+    return false;
+}
+
+inline int LightDistance(int dx,int dy) {
+    dx=std::abs(dx);dy=std::abs(dy);
+    return (std::max)(dx,dy)+(3*(std::min)(dx,dy))/8;
+}
+
+inline std::array<uint32_t,1024> BakeLightingRGB(const uint8_t* cells,const std::vector<EditorLightSource>& lights,int ambient) {
+    std::array<uint32_t,1024> rgb;
+    const uint32_t base=ambient*0x010101u;rgb.fill(base);
+    for(int i=0;i<1024;++i) {
+        if(!LightingWalkable(cells[i])) continue;
+        int x=(i%32)*64+32,y=(i/32)*64+32,r=ambient,g=ambient,b=ambient;
+        for(const auto& l:lights) {
+            if(!(l.flags&LIGHT_FLAG_ACTIVE)||l.lightType!=LIGHT_TYPE_STATIC||l.radius<=0) continue;
+            int d=LightDistance(x-l.x,y-l.y);if(d>=l.radius) continue;
+            if((l.flags&LIGHT_FLAG_SHADOWS)&&!LightingVisible(cells,l.x,l.y,x,y)) continue;
+            int a=(l.radius-d)*l.intensity/l.radius;
+            r=(std::min)(255,r+a*int((l.color>>16)&255)/255);
+            g=(std::min)(255,g+a*int((l.color>>8)&255)/255);
+            b=(std::min)(255,b+a*int(l.color&255)/255);
+        }
+        rgb[i]=(r<<16)|(g<<8)|b;
+    }
+    auto smooth=rgb;
+    for(int y=0;y<32;++y)for(int x=0;x<32;++x) {
+        int i=y*32+x;if(!LightingWalkable(cells[i])) continue;
+        int r=((rgb[i]>>16)&255)*2,g=((rgb[i]>>8)&255)*2,b=(rgb[i]&255)*2,n=2;
+        for(auto delta: {std::pair<int,int>{-1,0},{1,0},{0,-1},{0,1}}) {
+            int xx=x+delta.first,yy=y+delta.second;
+            if(xx<0||xx>=32||yy<0||yy>=32||!LightingWalkable(cells[yy*32+xx])) continue;
+            uint32_t c=rgb[yy*32+xx];r+=(c>>16)&255;g+=(c>>8)&255;b+=c&255;++n;
+        }
+        smooth[i]=((r/n)<<16)|((g/n)<<8)|(b/n);
+    }
+    return smooth;
+}
+
+inline uint64_t LightingBakeSignature(const uint8_t* cells,const std::vector<EditorLightSource>& lights,int ambient) {
+    uint64_t hash=1469598103934665603ull;
+    auto add=[&](uint32_t v){hash^=v;hash*=1099511628211ull;};
+    for(int i=0;i<1024;++i)add(cells[i]);add(ambient);
+    for(const auto& l:lights)if(l.lightType==LIGHT_TYPE_STATIC) {
+        add(l.x);add(l.y);add(l.radius);add(l.intensity);add(l.flags&3);add(l.color);
+    }
+    return hash;
+}

editor/src/preview_protocol.h

@@ -8,21 +8,33 @@
 // Never modify payload while state == 1. All fields have fixed wire widths.
 struct EnginePreviewPacket {
     uint32_t magic = 0x56504245; // EBPV
-    uint32_t version = 1;
+    uint32_t version = 2;
     volatile long state = 0;
     uint32_t parentPid = 0;
     int32_t x = 160, y = 160, angle = 0;
     uint32_t ceiling = 0, floor = 0, spriteCount = 0;
     uint32_t cinematic = 0, fade = 0, textureRevision = 0;
-    uint32_t reserved[19]{};
+    uint32_t lightingMode = 2;   // offset 52: 0=None, 1=Baked, 2=Dynamic
+    uint32_t ambientLight = 40;  // offset 56: base shadow level
+    uint32_t flashlight = 1;    // offset 60: 1=flashlight active
+    uint32_t lightCount = 0;    // offset 64: count of active lights
+    uint32_t flashlightRadius = 384; // 68
+    uint32_t flashlightIntensity = 240; // 72
+    uint32_t flashlightCone = 45; // 76
+    uint32_t lightingRevision = 0; // 80
+    uint32_t lightTick = 0; // 84, deterministic 60 Hz time
+    uint32_t reserved[10]{};
     uint8_t cells[1024]{};
     SpriteEntry sprites[32]{};
     char subtitle[96]{};
     uint32_t textures[16*128*128]{};
     uint32_t pixels[320*240]{};
+    EditorLightSource lights[MAX_EDITOR_LIGHTS]{};
+    uint32_t bakedRGB[1024]{};
 };
 static_assert(sizeof(long) == 4, "Preview protocol requires Windows LONG");
 static_assert(offsetof(EnginePreviewPacket, cells) == 128, "Preview header mismatch");
 static_assert(offsetof(EnginePreviewPacket, textures) == 2016, "Preview texture offset mismatch");
 static_assert(offsetof(EnginePreviewPacket, pixels) == 1050592, "Preview framebuffer offset mismatch");
-static_assert(sizeof(EnginePreviewPacket) == 1357792, "Preview mapping size mismatch");
+static_assert(offsetof(EnginePreviewPacket,lights)==1357792,"Light payload offset changed");
+static_assert(sizeof(EnginePreviewPacket) == 1362408, "Preview mapping size mismatch");

editor/src/project_manager.h

@@ -19,6 +19,9 @@ struct EblanProject {
     int gameMode = 1; // 0 = Adventure (No weapons / Peaceful), 1 = Action (Weapons)
     bool showWeapons = true;
     bool showCrosshair = true;
+    int lightingMode = 2; // 0 = None, 1 = Baked, 2 = Dynamic
+    int ambientLight = 40;
+    bool flashlight = true;
 
     bool Save(const std::string& path) const {
         HANDLE hFile = CreateFileA(path.c_str(), GENERIC_WRITE, 0, nullptr, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, nullptr);
@@ -38,6 +41,11 @@ struct EblanProject {
         content += std::string("GameMode=") + numBuf + "\r\n";
         content += std::string("ShowWeapons=") + (showWeapons ? "1" : "0") + "\r\n";
         content += std::string("ShowCrosshair=") + (showCrosshair ? "1" : "0") + "\r\n";
+        snprintf(numBuf, sizeof(numBuf), "%d", lightingMode);
+        content += std::string("LightingMode=") + numBuf + "\r\n";
+        snprintf(numBuf, sizeof(numBuf), "%d", ambientLight);
+        content += std::string("AmbientLight=") + numBuf + "\r\n";
+        content += std::string("Flashlight=") + (flashlight ? "1" : "0") + "\r\n";
         DWORD written = 0;
         WriteFile(hFile, content.data(), static_cast<DWORD>(content.size()), &written, nullptr);
         CloseHandle(hFile);
@@ -75,6 +83,9 @@ struct EblanProject {
                     else if (key == "GameMode") gameMode = std::atoi(val.c_str());
                     else if (key == "ShowWeapons") showWeapons = (val == "1" || val == "true");
                     else if (key == "ShowCrosshair") showCrosshair = (val == "1" || val == "true");
+                    else if (key == "LightingMode") lightingMode = std::atoi(val.c_str());
+                    else if (key == "AmbientLight") ambientLight = std::atoi(val.c_str());
+                    else if (key == "Flashlight") flashlight = (val == "1" || val == "true");
                 }
             }
 

include/engine_combat.inc

@@ -85,6 +85,7 @@ setup_shotgun:
     mov hitTolerance, 40
     mov playerAttackCooldown, 22
     mov playerFlashTimer, 7
+    invoke SpawnMuzzleFlashLight, playerX, playerY
     jmp fire_hitscan
 
 setup_pistol:
@@ -97,6 +98,7 @@ setup_pistol:
     mov hitTolerance, 22
     mov playerAttackCooldown, 12
     mov playerFlashTimer, 5
+    invoke SpawnMuzzleFlashLight, playerX, playerY
 
 fire_hitscan:
     ; 3. Hitscan check against enemies & destructible barrels in crosshair
@@ -288,6 +290,7 @@ explode_barrel:
     push edi
     mov esi, [ebx].SpriteStruct.x
     mov edi, [ebx].SpriteStruct.y
+    invoke SpawnExplosionLight, esi, edi
 
     mov i, 0
 aoe_loop:

include/engine_data.inc

@@ -71,8 +71,20 @@ keyPause            db 0
 keyPauseHeld        db 0
 keyHudStyleHeld     db 0
 keyMenuHeld         db 0
+keyFlashlight       db 0
+keyFlashlightHeld   db 0
+keyLightMode        db 0
+keyLightModeHeld    db 0
 isGamePaused        dd 0
 
+; Lighting Configuration & Dynamic State
+lightingMode        dd LIGHTING_MODE_NONE    ; 0 = None, 1 = Baked, 2 = Dynamic+Baked (InitLightingSystem enables DYNAMIC)
+ambientLightLevel   dd 40                    ; Base shadow level (40/256 = ~15% darkness)
+isFlashlightOn      dd 1                     ; 1 = Player flashlight active
+flashlightRadius    dd 384                   ; 6 cells distance
+flashlightIntensity dd 240                   ; Bright focused beam
+flashlightConeAngle dd 45                    ; Half-angle of beam (~32 degrees in 512-angle circle)
+
 ; Game Mode & HUD Configuration
 gameMode            dd GAME_MODE_ACTION     ; 0 = Adventure (No weapons), 1 = Action / Combat
 hudStyle            dd HUD_STYLE_CLEAN      ; 0 = Clean / Immersive, 1 = Debug / Classic
@@ -250,6 +262,11 @@ entityTimer         dd MAX_SPRITES dup(?)
 entitySpeed         dd MAX_SPRITES dup(?)
 entityAggro         dd MAX_SPRITES dup(?)
 
+ALIGN 4
+lightGrid           db MAP_SIZE dup(?)       ; 1024 bytes: baked light level (0..255) per cell
+ALIGN 4
+lightSources        db MAX_LIGHTS * (sizeof LightSource) dup(?)
+
 ; Gameplay Variables & Built-in Toast Strings (CP1251)
 .data
 ALIGN 4
@@ -275,6 +292,12 @@ szWeaponsEnabledToast   db "РЕЖИМ: ОРУЖИЕ ВКЛЮЧЕНО", 0
 szWeaponsDisabledToast  db "РЕЖИМ: БЕЗ ОРУЖИЯ (КВЕСТ)", 0
 szHudCleanToast         db "ИНТЕРФЕЙС: ЧИСТЫЙ ВИД", 0
 szHudDebugToast         db "ИНТЕРФЕЙС: РЕЖИМ ОТЛАДКИ", 0
+szFlashlightOn          db 0D4h,0CEh,0CDh,0C0h,0D0h,0C8h,0CAh,03Ah,020h,0C2h,0CAh,0CBh,020h,05Bh,046h,05Dh,0 ; ФОНАРИК: ВКЛ [F] (CP1251)
+szFlashlightOff         db 0D4h,0CEh,0CDh,0C0h,0D0h,0C8h,0CAh,03Ah,020h,0C2h,0DBh,0CAh,0CBh,020h,05Bh,046h,05Dh,0 ; ФОНАРИК: ВЫКЛ [F] (CP1251)
+szLightMode0            db 0D1h,0C2h,0C5h,0D2h,03Ah,020h,0C2h,0DBh,0CAh,0CBh,0DEh,0D7h,0C5h,0CDh,020h,028h,057h,06Fh,06Ch,066h,033h,044h,029h,0 ; СВЕТ: ВЫКЛЮЧЕН (Wolf3D) (CP1251)
+szLightMode1            db 0D1h,0C2h,0C5h,0D2h,03Ah,020h,0C7h,0C0h,0CFh,0C5h,0D7h,0A8h,0CDh,0CDh,0DBh,0C9h,020h,028h,04Ch,069h,067h,068h,074h,06Dh,061h,070h,029h,0 ; СВЕТ: ЗАПЕЧЁННЫЙ (Lightmap) (CP1251)
+szLightMode2            db 0D1h,0C2h,0C5h,0D2h,03Ah,020h,0C4h,0C8h,0CDh,0C0h,0CCh,0C8h,0D7h,0C5h,0D1h,0CAh,0C8h,0C9h,020h,0D1h,020h,0D4h,0C8h,0C7h,0C8h,0CAh,0CEh,0C9h,0 ; СВЕТ: ДИНАМИЧЕСКИЙ С ФИЗИКОЙ (CP1251)
+szBakeDoneToast         db 0D1h,0C2h,0C5h,0D2h,020h,0C7h,0C0h,0CFh,0C5h,0D7h,0A8h,0CDh,03Ah,020h,031h,030h,032h,034h,020h,0DFh,0D7h,0C5h,0C9h,0CAh,0C8h,0 ; СВЕТ ЗАПЕЧЁН: 1024 ЯЧЕЙКИ (CP1251)
 szProjectFile           db "project.eblanproj", 0
 szProjGameMode0         db "GameMode=0", 0
 szProjGameMode1         db "GameMode=1", 0
@@ -285,3 +308,23 @@ szFlagAction            db "action", 0
 szFlagDebugHud          db "debug-hud", 0
 szFlagCleanHud          db "clean-hud", 0
 previewPrefix           db "--preview:", 0
+
+; Persistent and staged lighting buffers (declared before the map loader).
+.data
+lightingTick dd 0
+authoredLightCount dd 0
+legacyLightingSettings dd 0,40,1,384,240,45,1,0
+lightRed dd 256
+lightGreen dd 256
+lightBlue dd 256
+lightAccumR dd 0
+lightAccumG dd 0
+lightAccumB dd 0
+lightWeight dd 0
+.data?
+ALIGN 4
+lightGridRGB dd MAP_SIZE dup(?)
+lightSmoothRGB dd MAP_SIZE dup(?)
+stagedLightSettings dd 8 dup(?)
+stagedLightSources db 13*40 dup(?)
+stagedLightRGB dd MAP_SIZE dup(?)

include/engine_defs.inc

@@ -74,6 +74,27 @@ VK_KEY_4            equ 34h
 VK_KEY_5            equ 35h
 VK_KEY_F1           equ 70h
 VK_KEY_H            equ 48h
+VK_KEY_F            equ 46h             ; Flashlight toggle
+VK_KEY_L            equ 4Ch             ; Lighting mode cycle
+
+; Lighting Modes
+LIGHTING_MODE_NONE      equ 0           ; Fullbright (classic retro Wolf3D flat lighting)
+LIGHTING_MODE_BAKED     equ 1           ; Static Baked Lightmap (raytraced shadow-casting)
+LIGHTING_MODE_DYNAMIC   equ 2           ; Dynamic Point Lights + Realtime Physics + Flashlight
+
+; Light Source Archetypes & Flags
+LIGHT_TYPE_STATIC       equ 0           ; Static baked light
+LIGHT_TYPE_POINT        equ 1           ; Realtime dynamic point light (torch, lamp)
+LIGHT_TYPE_FLASHLIGHT   equ 2           ; Player spotlight cone
+LIGHT_TYPE_BURST        equ 3           ; Decaying light flare (muzzle flash, explosion)
+LIGHT_TYPE_PULSE        equ 4           ; Flickering / pulsing light
+
+LIGHT_FLAG_INACTIVE     equ 0
+LIGHT_FLAG_ACTIVE       equ 1
+LIGHT_FLAG_SHADOWS      equ 2           ; Raycast wall occlusion (shadow casting)
+LIGHT_FLAG_FLICKER      equ 4           ; Organic torch flicker
+
+MAX_LIGHTS              equ 16
 
 ; Game Modes
 GAME_MODE_ADVENTURE equ 0       ; Exploration / Quest / Horror / Puzzle (No weapons, clean view)
@@ -136,7 +157,7 @@ CELL_COUNT          equ 11
 ; Sector Transition Portals
 MAX_TRANSITIONS     equ 16
 MAX_PATH_BYTES      equ 260
-MAP_FORMAT_VERSION  equ 4
+MAP_FORMAT_VERSION  equ 5
 
 LevelTransition STRUCT          ; sizeof = 42 bytes (packed)
     triggerCellX    db 0        ; 1 byte
@@ -161,6 +182,20 @@ SpriteStruct STRUCT
     flags       dd 0
 SpriteStruct ENDS
 
+; Light Source Struct (sizeof = 40 bytes)
+LightSource STRUCT
+    x           dd 0    ; raw world units (0..2047)
+    y           dd 0    ; raw world units (0..2047)
+    radius      dd 0    ; radius in raw world units
+    intensity   dd 0    ; 0..255 base intensity
+    curIntensity dd 0   ; 0..255 current intensity (after flicker/decay)
+    lightType   dd 0    ; LIGHT_TYPE_*
+    flags       dd 0    ; LIGHT_FLAG_*
+    color       dd 0    ; 00RRGGBBh tint (0 = neutral white/ambient)
+    decaySpeed  dd 0    ; decay per tick for BURST lights
+    flickerPhase dd 0   ; flicker oscillation phase
+LightSource ENDS
+
 ; Texture Pack (assets/textures/texturepack.bin):
 ;   dd magic 'EBTX', dw version (1), dw slotCount, then slotCount * 65536 bytes
 TEXPACK_MAGIC       equ 58544245h       ; 'EBTX'
@@ -177,7 +212,7 @@ MAP_MAGIC           equ 4E4C4245h       ; 'EBLN'
 
 MapHeader STRUCT          ; sizeof = 38 bytes (packed)
     magic           dd 0    ; 'EBLN'
-    version         dw 0    ; 1 = fixed coords, 2/3 = transitions, 4 = cutscenes
+    version         dw 0    ; 1 = fixed coords, 2/3 = transitions, 4 = cutscenes, 5 = lighting
     mapWidth        dw 0    ; 32
     mapHeight       dw 0    ; 32
     playerStartX    dw 0    ; cell X
@@ -190,7 +225,8 @@ MapHeader STRUCT          ; sizeof = 38 bytes (packed)
     cutsceneCount   dw 0
     cutsceneStringCount dw 0
     cutsceneFlags   dw 0
-    reserved        db 4 dup(0)
+    lightCount      dw 0
+    lightingReserved dw 0
 MapHeader ENDS
 
 MAX_CUTSCENE_EVENTS  equ 128

include/engine_input.inc

@@ -203,6 +203,53 @@ hud_key_released:
     mov keyHudStyleHeld, 0
 hud_key_sampled:
 
+    ; F: Toggle Flashlight
+    invoke GetAsyncKeyState, VK_KEY_F
+    test ax, 8000h
+    jz flash_key_released
+    cmp keyFlashlightHeld, 0
+    jne flash_key_sampled
+    xor isFlashlightOn, 1
+    mov keyFlashlightHeld, 1
+    cmp isFlashlightOn, 1
+    je toast_flash_on
+    invoke ShowGameToast, OFFSET szFlashlightOff, 60, 00808080h
+    jmp flash_key_sampled
+toast_flash_on:
+    invoke ShowGameToast, OFFSET szFlashlightOn, 60, COLOR_CYAN
+    jmp flash_key_sampled
+flash_key_released:
+    mov keyFlashlightHeld, 0
+flash_key_sampled:
+
+    ; L: Cycle Lighting Mode (0: Off -> 1: Baked -> 2: Dynamic)
+    invoke GetAsyncKeyState, VK_KEY_L
+    test ax, 8000h
+    jz light_key_released
+    cmp keyLightModeHeld, 0
+    jne light_key_sampled
+    inc lightingMode
+    cmp lightingMode, 3
+    jl @F
+    mov lightingMode, 0
+@@:
+    mov keyLightModeHeld, 1
+    cmp lightingMode, LIGHTING_MODE_NONE
+    je toast_light_none
+    cmp lightingMode, LIGHTING_MODE_BAKED
+    je toast_light_baked
+    invoke ShowGameToast, OFFSET szLightMode2, 60, COLOR_YELLOW
+    jmp light_key_sampled
+toast_light_none:
+    invoke ShowGameToast, OFFSET szLightMode0, 60, 00808080h
+    jmp light_key_sampled
+toast_light_baked:
+    invoke ShowGameToast, OFFSET szLightMode1, 60, COLOR_CYAN
+    jmp light_key_sampled
+light_key_released:
+    mov keyLightModeHeld, 0
+light_key_sampled:
+
     ; Weapon Selection Keys: 1, 2, 3 (only in Action mode with weapons enabled)
     cmp gameMode, GAME_MODE_ACTION
     jne skip_weapon_select

include/engine_light.inc

@@ -0,0 +1,103 @@
+include include/engine_lighting_core.inc
+AddLightSource PROC uses ebx ecx edx x:DWORD, y:DWORD, radius:DWORD, intensity:DWORD, lightType:DWORD, flags:DWORD, color:DWORD
+    cmp x,2048
+    jae no_slot_avail
+    cmp y,2048
+    jae no_slot_avail
+    cmp radius,1
+    jb no_slot_avail
+    cmp radius,2048
+    ja no_slot_avail
+    cmp intensity,255
+    ja no_slot_avail
+    cmp lightType,4
+    ja no_slot_avail
+    mov eax,flags
+    and eax,0FFFFFFF8h
+    jnz no_slot_avail
+    test color,0FF000000h
+    jnz no_slot_avail
+    mov ecx, 1                  ; Slot 0 is reserved for player flashlight
+find_slot:
+    cmp ecx, 14
+    jge no_slot_avail
+
+    mov ebx, ecx
+    imul ebx, sizeof LightSource
+    add ebx, OFFSET lightSources
+
+    test [ebx].LightSource.flags, LIGHT_FLAG_ACTIVE
+    jz slot_found
+
+    inc ecx
+    jmp find_slot
+
+slot_found:
+    mov eax, x
+    mov [ebx].LightSource.x, eax
+    mov eax, y
+    mov [ebx].LightSource.y, eax
+    mov eax, radius
+    mov [ebx].LightSource.radius, eax
+    mov eax, intensity
+    mov [ebx].LightSource.intensity, eax
+    mov [ebx].LightSource.curIntensity, eax
+    mov eax, lightType
+    mov [ebx].LightSource.lightType, eax
+    mov eax, flags
+    or eax, LIGHT_FLAG_ACTIVE
+    mov [ebx].LightSource.flags, eax
+    mov eax, color
+    mov [ebx].LightSource.color, eax
+    mov [ebx].LightSource.decaySpeed, 0
+    mov [ebx].LightSource.flickerPhase, 0
+
+    mov eax, ecx
+    ret
+
+no_slot_avail:
+    mov eax, -1
+    ret
+AddLightSource ENDP
+
+; ------------------------------------------------------------------------------
+; SpawnExplosionLight: Triggers high-intensity fiery explosion light burst
+; ------------------------------------------------------------------------------
+SpawnExplosionLight PROC uses ebx x:DWORD, y:DWORD
+    mov ebx, 15 * (sizeof LightSource)
+    add ebx, OFFSET lightSources
+
+    mov eax, x
+    mov [ebx].LightSource.x, eax
+    mov eax, y
+    mov [ebx].LightSource.y, eax
+    mov [ebx].LightSource.radius, 450
+    mov [ebx].LightSource.intensity, 255
+    mov [ebx].LightSource.curIntensity, 255
+    mov [ebx].LightSource.lightType, LIGHT_TYPE_BURST
+    mov [ebx].LightSource.flags, LIGHT_FLAG_ACTIVE or LIGHT_FLAG_SHADOWS
+    mov [ebx].LightSource.decaySpeed, 12
+    mov [ebx].LightSource.color, 00FFAA33h ; Warm fire tint
+    ret
+SpawnExplosionLight ENDP
+
+; ------------------------------------------------------------------------------
+; SpawnMuzzleFlashLight: Triggers momentary bright gunshot flash
+; ------------------------------------------------------------------------------
+SpawnMuzzleFlashLight PROC uses ebx x:DWORD, y:DWORD
+    mov ebx, 14 * (sizeof LightSource)
+    add ebx, OFFSET lightSources
+
+    mov eax, x
+    mov [ebx].LightSource.x, eax
+    mov eax, y
+    mov [ebx].LightSource.y, eax
+    mov [ebx].LightSource.radius, 350
+    mov [ebx].LightSource.intensity, 240
+    mov [ebx].LightSource.curIntensity, 240
+    mov [ebx].LightSource.lightType, LIGHT_TYPE_BURST
+    mov [ebx].LightSource.flags, LIGHT_FLAG_ACTIVE or LIGHT_FLAG_SHADOWS
+    mov [ebx].LightSource.decaySpeed, 60
+    mov [ebx].LightSource.color, 00FFFFEEh ; White/yellow flare
+    ret
+SpawnMuzzleFlashLight ENDP

include/engine_lighting_core.inc

@@ -0,0 +1,817 @@
+; Versioned authored lighting, RGB shading and exact occlusion traversal.
+.code
+InitLightingSystem PROTO
+BakeMapLighting PROTO
+UpdateDynamicLights PROTO
+AddLightSource PROTO :DWORD,:DWORD,:DWORD,:DWORD,:DWORD,:DWORD,:DWORD
+SpawnExplosionLight PROTO :DWORD,:DWORD
+SpawnMuzzleFlashLight PROTO :DWORD,:DWORD
+CastLightRay PROTO :DWORD,:DWORD,:DWORD,:DWORD
+ComputeWallLightLevel PROTO :DWORD,:DWORD,:DWORD,:DWORD,:DWORD,:DWORD,:DWORD,:DWORD,:DWORD,:DWORD,:DWORD
+ComputeSpriteLight PROTO :DWORD,:DWORD,:DWORD
+SamplePointLighting PROTO :DWORD,:DWORD,:DWORD,:DWORD
+LightCellFree PROTO :DWORD,:DWORD
+RefreshLightGrid PROTO
+
+ValidateLightingData PROC uses ebx ecx edx esi, settings:DWORD,sources:DWORD,count:DWORD
+    mov esi,settings
+    cmp DWORD PTR [esi],2
+    ja vl_invalid
+    cmp DWORD PTR [esi+4],255
+    ja vl_invalid
+    cmp DWORD PTR [esi+8],1
+    ja vl_invalid
+    cmp DWORD PTR [esi+12],32
+    jb vl_invalid
+    cmp DWORD PTR [esi+12],2048
+    ja vl_invalid
+    cmp DWORD PTR [esi+16],255
+    ja vl_invalid
+    cmp DWORD PTR [esi+20],1
+    jb vl_invalid
+    cmp DWORD PTR [esi+20],96
+    ja vl_invalid
+    cmp DWORD PTR [esi+24],1
+    jne vl_invalid
+    cmp DWORD PTR [esi+28],0
+    jne vl_invalid
+    cmp count,13
+    ja vl_invalid
+    mov ecx,count
+    mov esi,sources
+vl_source:
+    test ecx,ecx
+    jz vl_valid
+    cmp [esi].LightSource.x,2048
+    jae vl_invalid
+    cmp [esi].LightSource.y,2048
+    jae vl_invalid
+    cmp [esi].LightSource.radius,1
+    jb vl_invalid
+    cmp [esi].LightSource.radius,2048
+    ja vl_invalid
+    cmp [esi].LightSource.intensity,255
+    ja vl_invalid
+    cmp [esi].LightSource.curIntensity,255
+    ja vl_invalid
+    cmp [esi].LightSource.lightType,1
+    jbe vl_type_ok
+    cmp [esi].LightSource.lightType,4
+    jne vl_invalid
+vl_type_ok:
+    mov eax,[esi].LightSource.flags
+    and eax,0FFFFFFF8h
+    jnz vl_invalid
+    test [esi].LightSource.color,0FF000000h
+    jnz vl_invalid
+    add esi,40
+    dec ecx
+    jmp vl_source
+vl_valid:
+    mov eax,1
+    ret
+vl_invalid:
+    xor eax,eax
+    ret
+ValidateLightingData ENDP
+
+InitLightingSystem PROC uses eax ecx edi
+    mov lightingMode,0
+    mov ambientLightLevel,40
+    mov isFlashlightOn,1
+    mov flashlightRadius,384
+    mov flashlightIntensity,240
+    mov flashlightConeAngle,45
+    mov authoredLightCount,0
+    mov lightingTick,0
+    mov edi,OFFSET lightSources
+    mov ecx,MAX_LIGHTS*10
+    xor eax,eax
+    rep stosd
+    mov edi,OFFSET lightGridRGB
+    mov ecx,MAP_SIZE
+    mov eax,00282828h
+    rep stosd
+    call RefreshLightGrid
+    ret
+InitLightingSystem ENDP
+
+CommitLightingData PROC uses eax ecx esi edi,settings:DWORD,sources:DWORD,count:DWORD,rgb:DWORD
+    call InitLightingSystem
+    mov esi,settings
+    lodsd
+    mov lightingMode,eax
+    lodsd
+    mov ambientLightLevel,eax
+    lodsd
+    mov isFlashlightOn,eax
+    lodsd
+    mov flashlightRadius,eax
+    lodsd
+    mov flashlightIntensity,eax
+    lodsd
+    mov flashlightConeAngle,eax
+    mov esi,sources
+    mov edi,OFFSET lightSources+40
+    mov ecx,count
+    mov authoredLightCount,ecx
+    imul ecx,10
+    rep movsd
+    mov esi,rgb
+    mov edi,OFFSET lightGridRGB
+    mov ecx,MAP_SIZE
+    rep movsd
+    call RefreshLightGrid
+    ret
+CommitLightingData ENDP
+
+LightCellFree PROC uses edx,x:DWORD,y:DWORD
+    cmp x,32
+    jae lcf_no
+    cmp y,32
+    jae lcf_no
+    mov eax,y
+    shl eax,5
+    add eax,x
+    movzx eax,BYTE PTR [gameMap+eax]
+    cmp eax,0
+    je lcf_yes
+    cmp eax,6
+    je lcf_yes
+    cmp eax,10
+    je lcf_yes
+lcf_no:
+    xor eax,eax
+    ret
+lcf_yes:
+    mov eax,1
+    ret
+LightCellFree ENDP
+
+; Supercover traversal: test both sides when crossing an exact grid corner.
+CastLightRay PROC uses ebx ecx edx esi edi,x1:DWORD,y1:DWORD,x2:DWORD,y2:DWORD
+    LOCAL cellX:DWORD,cellY:DWORD,ex:DWORD,ey:DWORD,deltaX:DWORD,deltaY:DWORD,sx:DWORD,sy:DWORD,nx:DWORD,ny:DWORD,axv:DWORD
+    mov eax,x1
+    or eax,y1
+    or eax,x2
+    or eax,y2
+    test eax,0FFFFF800h
+    jnz lr_blocked
+    mov eax,x1
+    shr eax,6
+    mov cellX,eax
+    mov eax,y1
+    shr eax,6
+    mov cellY,eax
+    mov eax,x2
+    shr eax,6
+    mov ex,eax
+    mov eax,y2
+    shr eax,6
+    mov ey,eax
+    mov sx,1
+    mov eax,x2
+    sub eax,x1
+    jns lr_dx
+    neg eax
+    mov sx,-1
+lr_dx:
+    mov deltaX,eax
+    mov sy,1
+    mov eax,y2
+    sub eax,y1
+    jns lr_dy
+    neg eax
+    mov sy,-1
+lr_dy:
+    mov deltaY,eax
+    mov eax,cellX
+    shl eax,6
+    cmp sx,1
+    jne lr_nx_neg
+    add eax,64
+    sub eax,x1
+    jmp lr_nx
+lr_nx_neg:
+    neg eax
+    add eax,x1
+lr_nx:
+    mov nx,eax
+    mov eax,cellY
+    shl eax,6
+    cmp sy,1
+    jne lr_ny_neg
+    add eax,64
+    sub eax,y1
+    jmp lr_ny
+lr_ny_neg:
+    neg eax
+    add eax,y1
+lr_ny:
+    mov ny,eax
+    mov edi,65
+lr_step:
+    mov eax,cellX
+    cmp eax,ex
+    jne lr_cross
+    mov eax,cellY
+    cmp eax,ey
+    je lr_end
+lr_cross:
+    mov eax,3FFFFFFFh
+    cmp deltaX,0
+    je lr_a
+    mov eax,nx
+    imul eax,deltaY
+lr_a:
+    mov axv,eax
+    mov eax,3FFFFFFFh
+    cmp deltaY,0
+    je lr_b
+    mov eax,ny
+    imul eax,deltaX
+lr_b:
+    cmp axv,eax
+    jb lr_x
+    ja lr_y
+    mov eax,cellX
+    add eax,sx
+    invoke LightCellFree,eax,cellY
+    test eax,eax
+    jz lr_blocked
+    mov eax,cellY
+    add eax,sy
+    invoke LightCellFree,cellX,eax
+    test eax,eax
+    jz lr_blocked
+    mov eax,sx
+    add cellX,eax
+    add nx,64
+lr_y:
+    mov eax,sy
+    add cellY,eax
+    add ny,64
+    jmp lr_test
+lr_x:
+    mov eax,sx
+    add cellX,eax
+    add nx,64
+lr_test:
+    invoke LightCellFree,cellX,cellY
+    test eax,eax
+    jz lr_blocked
+    dec edi
+    jnz lr_step
+lr_blocked:
+    xor eax,eax
+    ret
+lr_end:
+    invoke LightCellFree,cellX,cellY
+    ret
+CastLightRay ENDP
+
+LightDistance PROC uses ebx edx,deltaX:DWORD,deltaY:DWORD
+    mov eax,deltaX
+    cdq
+    xor eax,edx
+    sub eax,edx
+    mov ebx,eax
+    mov eax,deltaY
+    cdq
+    xor eax,edx
+    sub eax,edx
+    cmp eax,ebx
+    jae ld_max
+    xchg eax,ebx
+ld_max:
+    lea ebx,[ebx+ebx*2]
+    shr ebx,3
+    add eax,ebx
+    ret
+LightDistance ENDP
+
+AddLightColor PROC uses eax ebx ecx edx,color:DWORD,amount:DWORD
+    mov ebx,255
+    mov eax,color
+    and eax,255
+    imul eax,amount
+    xor edx,edx
+    div ebx
+    add lightAccumB,eax
+    mov eax,color
+    shr eax,8
+    and eax,255
+    imul eax,amount
+    xor edx,edx
+    div ebx
+    add lightAccumG,eax
+    mov eax,color
+    shr eax,16
+    and eax,255
+    imul eax,amount
+    xor edx,edx
+    div ebx
+    add lightAccumR,eax
+    ret
+AddLightColor ENDP
+
+PointLightAmount PROC uses ebx ecx edx esi,source:DWORD,x:DWORD,y:DWORD
+    LOCAL distance:DWORD
+    mov esi,source
+    mov eax,x
+    sub eax,[esi].LightSource.x
+    mov ecx,y
+    sub ecx,[esi].LightSource.y
+    invoke LightDistance,eax,ecx
+    mov distance,eax
+    cmp eax,[esi].LightSource.radius
+    jae pla_zero
+    test [esi].LightSource.flags,LIGHT_FLAG_SHADOWS
+    jz pla_visible
+    invoke CastLightRay,[esi].LightSource.x,[esi].LightSource.y,x,y
+    test eax,eax
+    jz pla_zero
+pla_visible:
+    mov eax,[esi].LightSource.radius
+    sub eax,distance
+    imul eax,[esi].LightSource.curIntensity
+    xor edx,edx
+    div [esi].LightSource.radius
+    ret
+pla_zero:
+    xor eax,eax
+    ret
+PointLightAmount ENDP
+
+RefreshLightGrid PROC uses eax ebx ecx edx esi edi
+    mov esi,OFFSET lightGridRGB
+    mov edi,OFFSET lightGrid
+    mov ecx,MAP_SIZE
+rlg_loop:
+    lodsd
+    mov edx,eax
+    and eax,255
+    mov ebx,edx
+    shr ebx,8
+    and ebx,255
+    add eax,ebx
+    shr edx,16
+    and edx,255
+    add eax,edx
+    xor edx,edx
+    mov ebx,3
+    div ebx
+    stosb
+    loop rlg_loop
+    ret
+RefreshLightGrid ENDP
+
+PackBakedRGB PROC uses ebx edx
+    mov eax,lightAccumR
+    cmp eax,255
+    jbe @F
+    mov eax,255
+@@:
+    shl eax,16
+    mov ebx,eax
+    mov eax,lightAccumG
+    cmp eax,255
+    jbe @F
+    mov eax,255
+@@:
+    shl eax,8
+    or ebx,eax
+    mov eax,lightAccumB
+    cmp eax,255
+    jbe @F
+    mov eax,255
+@@:
+    or eax,ebx
+    ret
+PackBakedRGB ENDP
+
+AccumulateBakedCell PROC uses eax ebx ecx edx,x:DWORD,y:DWORD,weight:DWORD
+    invoke LightCellFree,x,y
+    test eax,eax
+    jz abc_done
+    mov eax,y
+    shl eax,5
+    add eax,x
+    mov edx,[lightGridRGB+eax*4]
+    mov eax,edx
+    and eax,255
+    imul eax,weight
+    add lightAccumB,eax
+    mov eax,edx
+    shr eax,8
+    and eax,255
+    imul eax,weight
+    add lightAccumG,eax
+    shr edx,16
+    imul edx,weight
+    add lightAccumR,edx
+    mov eax,weight
+    add lightWeight,eax
+abc_done:
+    ret
+AccumulateBakedCell ENDP
+
+BakeMapLighting PROC uses ebx ecx edx esi edi
+    LOCAL index:DWORD,x:DWORD,y:DWORD
+    mov index,0
+bl_cell:
+    mov eax,index
+    and eax,31
+    mov x,eax
+    mov eax,index
+    shr eax,5
+    mov y,eax
+    mov eax,ambientLightLevel
+    mov lightAccumR,eax
+    mov lightAccumG,eax
+    mov lightAccumB,eax
+    invoke LightCellFree,x,y
+    test eax,eax
+    jz bl_store
+    mov eax,x
+    shl eax,6
+    add eax,32
+    mov x,eax
+    mov eax,y
+    shl eax,6
+    add eax,32
+    mov y,eax
+    mov esi,OFFSET lightSources+40
+    mov edi,13
+bl_source:
+    test [esi].LightSource.flags,LIGHT_FLAG_ACTIVE
+    jz bl_next_source
+    cmp [esi].LightSource.lightType,LIGHT_TYPE_STATIC
+    jne bl_next_source
+    mov eax,[esi].LightSource.intensity
+    push [esi].LightSource.curIntensity
+    mov [esi].LightSource.curIntensity,eax
+    invoke PointLightAmount,esi,x,y
+    pop [esi].LightSource.curIntensity
+    invoke AddLightColor,[esi].LightSource.color,eax
+bl_next_source:
+    add esi,40
+    dec edi
+    jnz bl_source
+bl_store:
+    call PackBakedRGB
+    mov ebx,index
+    mov [lightGridRGB+ebx*4],eax
+    inc index
+    cmp index,MAP_SIZE
+    jb bl_cell
+    ; Smooth out of place, without averaging through wall cells.
+    mov index,0
+bl_smooth:
+    mov ebx,index
+    mov eax,[lightGridRGB+ebx*4]
+    mov [lightSmoothRGB+ebx*4],eax
+    mov eax,ebx
+    and eax,31
+    mov x,eax
+    shr ebx,5
+    mov y,ebx
+    invoke LightCellFree,x,y
+    test eax,eax
+    jz bl_next_smooth
+    mov lightAccumR,0
+    mov lightAccumG,0
+    mov lightAccumB,0
+    mov lightWeight,0
+    invoke AccumulateBakedCell,x,y,2
+    mov eax,x
+    dec eax
+    invoke AccumulateBakedCell,eax,y,1
+    mov eax,x
+    inc eax
+    invoke AccumulateBakedCell,eax,y,1
+    mov eax,y
+    dec eax
+    invoke AccumulateBakedCell,x,eax,1
+    mov eax,y
+    inc eax
+    invoke AccumulateBakedCell,x,eax,1
+    mov eax,lightAccumR
+    xor edx,edx
+    div lightWeight
+    mov lightAccumR,eax
+    mov eax,lightAccumG
+    xor edx,edx
+    div lightWeight
+    mov lightAccumG,eax
+    mov eax,lightAccumB
+    xor edx,edx
+    div lightWeight
+    mov lightAccumB,eax
+    call PackBakedRGB
+    mov ebx,index
+    mov [lightSmoothRGB+ebx*4],eax
+bl_next_smooth:
+    inc index
+    cmp index,MAP_SIZE
+    jb bl_smooth
+    mov esi,OFFSET lightSmoothRGB
+    mov edi,OFFSET lightGridRGB
+    mov ecx,MAP_SIZE
+    rep movsd
+    call RefreshLightGrid
+    ret
+BakeMapLighting ENDP
+
+UpdateDynamicLights PROC uses eax ebx ecx edx esi
+    inc lightingTick
+    mov esi,OFFSET lightSources+40
+    mov ecx,1
+udl_next:
+    test [esi].LightSource.flags,LIGHT_FLAG_ACTIVE
+    jz udl_skip
+    cmp [esi].LightSource.lightType,LIGHT_TYPE_BURST
+    je udl_burst
+    mov eax,[esi].LightSource.intensity
+    cmp [esi].LightSource.lightType,LIGHT_TYPE_STATIC
+    je udl_store
+    cmp [esi].LightSource.lightType,LIGHT_TYPE_PULSE
+    jne udl_flicker
+    mov edx,lightingTick
+    shl edx,2
+    add edx,ecx
+    and edx,511
+    mov ebx,[tableSin+edx*4]
+    sar ebx,1
+    add ebx,98304
+    imul eax,ebx
+    sar eax,17
+udl_flicker:
+    test [esi].LightSource.flags,LIGHT_FLAG_FLICKER
+    jz udl_store
+    mov edx,lightingTick
+    shr edx,2
+    imul edx,1103515245
+    imul ebx,ecx,12345
+    add edx,ebx
+    shr edx,16
+    and edx,15
+    sub edx,7
+    add eax,edx
+    cmp eax,0
+    jge @F
+    xor eax,eax
+@@:
+    cmp eax,255
+    jle udl_store
+    mov eax,255
+    jmp udl_store
+udl_burst:
+    mov eax,[esi].LightSource.curIntensity
+    sub eax,[esi].LightSource.decaySpeed
+    jg udl_store
+    xor eax,eax
+    mov [esi].LightSource.flags,0
+udl_store:
+    mov [esi].LightSource.curIntensity,eax
+udl_skip:
+    add esi,40
+    inc ecx
+    cmp ecx,16
+    jb udl_next
+    ret
+UpdateDynamicLights ENDP
+
+SamplePointLighting PROC uses ebx ecx edx esi edi,x:DWORD,y:DWORD,distance:DWORD,side:DWORD
+    LOCAL forward:DWORD,lateral:DWORD,beam:DWORD,atten:DWORD,fog:DWORD
+    mov eax,256
+    mov lightRed,eax
+    mov lightGreen,eax
+    mov lightBlue,eax
+    cmp lightingMode,0
+    je spl_done
+    mov eax,x
+    sar eax,6
+    and eax,31
+    mov edx,y
+    sar edx,6
+    and edx,31
+    shl edx,5
+    add eax,edx
+    mov eax,[lightGridRGB+eax*4]
+    mov edx,eax
+    and eax,255
+    mov lightAccumB,eax
+    mov eax,edx
+    shr eax,8
+    and eax,255
+    mov lightAccumG,eax
+    shr edx,16
+    mov lightAccumR,edx
+    cmp lightingMode,2
+    jne spl_fog
+    mov esi,OFFSET lightSources+40
+    mov edi,15
+spl_source:
+    test [esi].LightSource.flags,LIGHT_FLAG_ACTIVE
+    jz spl_next
+    cmp [esi].LightSource.lightType,LIGHT_TYPE_STATIC
+    je spl_next
+    cmp [esi].LightSource.radius,0
+    jle spl_next
+    invoke PointLightAmount,esi,x,y
+    invoke AddLightColor,[esi].LightSource.color,eax
+spl_next:
+    add esi,40
+    dec edi
+    jnz spl_source
+    cmp isFlashlightOn,0
+    je spl_fog
+    mov eax,x
+    sub eax,playerX
+    mov ebx,y
+    sub ebx,playerY
+    invoke LightDistance,eax,ebx
+    cmp eax,flashlightRadius
+    jae spl_fog
+    mov edx,flashlightRadius
+    sub edx,eax
+    mov eax,edx
+    imul eax,flashlightIntensity
+    xor edx,edx
+    div flashlightRadius
+    mov atten,eax
+    mov ecx,playerAngle
+    and ecx,511
+    mov eax,x
+    sub eax,playerX
+    imul [tableCos+ecx*4]
+    shrd eax,edx,16
+    mov forward,eax
+    mov eax,y
+    sub eax,playerY
+    imul [tableSin+ecx*4]
+    shrd eax,edx,16
+    add forward,eax
+    cmp forward,0
+    jle spl_fog
+    mov eax,y
+    sub eax,playerY
+    imul [tableCos+ecx*4]
+    shrd eax,edx,16
+    mov lateral,eax
+    mov eax,x
+    sub eax,playerX
+    imul [tableSin+ecx*4]
+    shrd eax,edx,16
+    sub lateral,eax
+    mov ecx,flashlightConeAngle
+    mov eax,forward
+    imul [tableSin+ecx*4]
+    idiv DWORD PTR [tableCos+ecx*4]
+    mov beam,eax
+    test eax,eax
+    jle spl_fog
+    mov eax,lateral
+    cdq
+    xor eax,edx
+    sub eax,edx
+    cmp eax,beam
+    jae spl_fog
+    mov ebx,beam
+    sub ebx,eax
+    mov eax,ebx
+    imul eax,atten
+    xor edx,edx
+    div beam
+    mov atten,eax
+    invoke CastLightRay,playerX,playerY,x,y
+    test eax,eax
+    jz spl_fog
+    invoke AddLightColor,00FFFFFFh,atten
+spl_fog:
+    mov fog,256
+    mov eax,distance
+    cmp eax,280
+    jle spl_side
+    cmp eax,720
+    jb spl_partial
+    mov fog,32
+    jmp spl_side
+spl_partial:
+    sub eax,280
+    imul eax,224
+    xor edx,edx
+    mov ebx,440
+    div ebx
+    sub fog,eax
+spl_side:
+    cmp side,1
+    jne spl_coeff
+    mov eax,fog
+    imul eax,192
+    shr eax,8
+    mov fog,eax
+spl_coeff:
+    mov eax,lightAccumR
+    cmp eax,256
+    jbe @F
+    mov eax,256
+@@:
+    imul eax,fog
+    shr eax,8
+    mov lightRed,eax
+    mov eax,lightAccumG
+    cmp eax,256
+    jbe @F
+    mov eax,256
+@@:
+    imul eax,fog
+    shr eax,8
+    mov lightGreen,eax
+    mov eax,lightAccumB
+    cmp eax,256
+    jbe @F
+    mov eax,256
+@@:
+    imul eax,fog
+    shr eax,8
+    mov lightBlue,eax
+spl_done:
+    mov eax,lightRed
+    cmp eax,lightGreen
+    jae @F
+    mov eax,lightGreen
+@@:
+    cmp eax,lightBlue
+    jae @F
+    mov eax,lightBlue
+@@:
+    ret
+SamplePointLighting ENDP
+
+ComputeWallLightLevel PROC uses ebx ecx edx,screenX:DWORD,mapX:DWORD,mapY:DWORD,sideHit:DWORD,stepX:DWORD,stepY:DWORD,rawDist:DWORD,perpWallDist:DWORD,rayAngle:DWORD,rayDirX:DWORD,rayDirY:DWORD
+    LOCAL x:DWORD,y:DWORD
+    mov eax,rawDist
+    imul rayDirX
+    shrd eax,edx,24
+    add eax,playerX
+    mov x,eax
+    mov eax,rawDist
+    imul rayDirY
+    shrd eax,edx,24
+    add eax,playerY
+    mov y,eax
+    cmp sideHit,0
+    jne cwl_y
+    mov eax,mapX
+    shl eax,6
+    cmp stepX,0
+    jg @F
+    add eax,64
+@@:
+    sub eax,stepX
+    mov x,eax
+    jmp cwl_ready
+cwl_y:
+    mov eax,mapY
+    shl eax,6
+    cmp stepY,0
+    jg @F
+    add eax,64
+@@:
+    sub eax,stepY
+    mov y,eax
+cwl_ready:
+    invoke SamplePointLighting,x,y,perpWallDist,sideHit
+    ret
+ComputeWallLightLevel ENDP
+
+ComputeSpriteLight PROC sprX:DWORD,sprY:DWORD,sprDist:DWORD
+    invoke SamplePointLighting,sprX,sprY,sprDist,0
+    ret
+ComputeSpriteLight ENDP
+
+ShadeLightPixel PROC uses eax ebx
+    mov eax,edx
+    and eax,255
+    imul eax,lightBlue
+    shr eax,8
+    mov ebx,eax
+    mov eax,edx
+    shr eax,8
+    and eax,255
+    imul eax,lightGreen
+    shr eax,8
+    shl eax,8
+    or ebx,eax
+    mov eax,edx
+    shr eax,16
+    and eax,255
+    imul eax,lightRed
+    shr eax,8
+    shl eax,16
+    or eax,ebx
+    mov edx,eax
+    ret
+ShadeLightPixel ENDP

include/engine_map.inc

@@ -14,6 +14,10 @@ ValidateStagedCutscene PROTO :DWORD, :DWORD, :DWORD, :DWORD, :DWORD
 CheckPortalTriggers PROTO
 InitEntities PROTO
 ShowGameToast PROTO :DWORD, :DWORD, :DWORD
+BakeMapLighting PROTO
+InitLightingSystem PROTO
+ValidateLightingData PROTO :DWORD,:DWORD,:DWORD
+CommitLightingData PROTO :DWORD,:DWORD,:DWORD,:DWORD
 
 ; ------------------------------------------------------------------------------
 ; InitMap: Creates a rich test level with rooms, hallways, pillars & doors
@@ -101,6 +105,7 @@ loop_wall2:
     mov portalLatchCell, -1
     mov mapCeilingColor, COLOR_CEILING
     mov mapFloorColor, COLOR_FLOOR
+    call InitLightingSystem
     ret
 InitMap ENDP
 
@@ -526,7 +531,7 @@ ApplyScreenFade ENDP
 LoadSublevelBinary PROC uses ebx ecx edx esi edi, pszPath:DWORD, spawnX:DWORD, spawnY:DWORD, spawnAngle:DWORD
     LOCAL hFile:DWORD, bytesRead:DWORD, header:MapHeader
     LOCAL numSprites:DWORD, numTransitions:DWORD, index:DWORD
-    LOCAL numEvents:DWORD, numStrings:DWORD, sceneFlags:DWORD
+    LOCAL numEvents:DWORD, numStrings:DWORD, sceneFlags:DWORD, numLights:DWORD
     LOCAL resolvedPath[MAX_PATH_BYTES]:BYTE
     LOCAL stagedMap[MAP_SIZE]:BYTE
     LOCAL stagedSprites[MAX_SPRITES * (sizeof SpriteStruct)]:BYTE
@@ -647,6 +652,16 @@ old_map_no_transitions:
     movzx eax, header.cutsceneFlags
     mov sceneFlags, eax
 old_map_no_cutscene:
+    mov numLights,0
+    cmp header.version,5
+    jb old_map_no_lighting
+    cmp header.lightingReserved,0
+    jne close_load_failed
+    movzx eax,header.lightCount
+    cmp eax,13
+    ja close_load_failed
+    mov numLights,eax
+old_map_no_lighting:
     mov eax, numTransitions
     imul eax, sizeof LevelTransition
     mov ebx, eax
@@ -660,6 +675,13 @@ old_map_no_cutscene:
     mov eax, numStrings
     imul eax, CUTSCENE_STRING_BYTES
     add ebx, eax
+    cmp header.version,5
+    jb map_lighting_size_ready
+    mov eax,numLights
+    imul eax,40
+    add ebx,eax
+    add ebx,32+4096
+map_lighting_size_ready:
     invoke GetFileSize, hFile, 0
     cmp eax, ebx
     jne close_load_failed
@@ -700,6 +722,44 @@ old_map_no_cutscene:
     jz close_load_failed
     cmp bytesRead, ebx
     jne close_load_failed
+    mov esi,OFFSET legacyLightingSettings
+    mov edi,OFFSET stagedLightSettings
+    mov ecx,8
+    rep movsd
+    mov edi,OFFSET stagedLightRGB
+    mov ecx,MAP_SIZE
+    mov eax,00282828h
+    rep stosd
+    cmp header.version,5
+    jb staged_lighting_ready
+    invoke ReadFile,hFile,OFFSET stagedLightSettings,32,ADDR bytesRead,0
+    test eax,eax
+    jz close_load_failed
+    cmp bytesRead,32
+    jne close_load_failed
+    mov ebx,numLights
+    imul ebx,40
+    invoke ReadFile,hFile,OFFSET stagedLightSources,ebx,ADDR bytesRead,0
+    test eax,eax
+    jz close_load_failed
+    cmp bytesRead,ebx
+    jne close_load_failed
+    invoke ReadFile,hFile,OFFSET stagedLightRGB,4096,ADDR bytesRead,0
+    test eax,eax
+    jz close_load_failed
+    cmp bytesRead,4096
+    jne close_load_failed
+    invoke ValidateLightingData,OFFSET stagedLightSettings,OFFSET stagedLightSources,numLights
+    test eax,eax
+    jz close_load_failed
+    mov esi,OFFSET stagedLightRGB
+    mov ecx,MAP_SIZE
+map_check_light_rgb:
+    lodsd
+    test eax,0FF000000h
+    jnz close_load_failed
+    loop map_check_light_rgb
+staged_lighting_ready:
     invoke ValidateStagedCutscene, numEvents, numStrings, sceneFlags, ADDR stagedMap, numTransitions
     test eax, eax
     jz close_load_failed
@@ -903,6 +963,7 @@ commit_level:
     mov eax, newAngle
     mov playerAngle, eax
     mov mapErrorFrames, 0
+    invoke CommitLightingData,OFFSET stagedLightSettings,OFFSET stagedLightSources,numLights,OFFSET stagedLightRGB
     mov eax, 1
     ret
 close_load_failed:
@@ -971,6 +1032,8 @@ load_startup_map:
     jnz startup_map_ready
     call InitMap
 startup_map_ready:
+    push eax
     call InitEntities
+    pop eax
     ret
 LoadMapBinary ENDP

include/engine_preview.inc

@@ -16,14 +16,14 @@ TryEnginePreview PROC uses ebx ecx edx esi edi
     test eax, eax
     jz preview_exit_error
     mov previewHandle, eax
-    invoke MapViewOfFile, eax, 6, 0, 0, 1357792
+    invoke MapViewOfFile, eax, 6, 0, 0, 1362408
     test eax, eax
     jz preview_exit_error
     mov previewMemory, eax
     mov ebx, eax
     cmp DWORD PTR [ebx], 56504245h
     jne preview_exit_error
-    cmp DWORD PTR [ebx+4], 1
+    cmp DWORD PTR [ebx+4], 2
     jne preview_exit_error
     invoke OpenProcess, 00100000h, 0, DWORD PTR [ebx+12] ; SYNCHRONIZE
     test eax, eax
@@ -106,6 +106,39 @@ preview_textures:
     mov ecx, MAX_TEXTURES*TEX_SIZE_BYTES/4
     rep movsd
 preview_scene:
+    mov eax,[ebx+52]
+    mov stagedLightSettings,eax
+    mov eax,[ebx+56]
+    mov stagedLightSettings[4],eax
+    mov eax,[ebx+60]
+    mov stagedLightSettings[8],eax
+    mov eax,[ebx+68]
+    mov stagedLightSettings[12],eax
+    mov eax,[ebx+72]
+    mov stagedLightSettings[16],eax
+    mov eax,[ebx+76]
+    mov stagedLightSettings[20],eax
+    mov stagedLightSettings[24],1
+    mov stagedLightSettings[28],0
+    lea esi,[ebx+1357792]
+    invoke ValidateLightingData,OFFSET stagedLightSettings,esi,DWORD PTR [ebx+64]
+    test eax,eax
+    jz preview_exit_error
+    lea esi,[ebx+1358312]
+    mov edi,MAP_SIZE
+preview_check_light_rgb:
+    lodsd
+    test eax,0FF000000h
+    jnz preview_exit_error
+    dec edi
+    jnz preview_check_light_rgb
+    lea esi,[ebx+1357792]
+    lea edi,[ebx+1358312]
+    invoke CommitLightingData,OFFSET stagedLightSettings,esi,DWORD PTR [ebx+64],edi
+    mov eax,[ebx+84]
+    dec eax
+    mov lightingTick,eax
+    call UpdateDynamicLights
     call Render3DScene
     mov ebx, previewMemory
     cmp DWORD PTR [ebx+40], 0

include/engine_raycaster.inc

@@ -36,12 +36,18 @@ Render3DScene PROC uses ebx ecx edx esi edi
     LOCAL glassLineHeight:DWORD
     LOCAL glassDrawStart:DWORD, glassDrawEnd:DWORD
     LOCAL glassTexX:DWORD, glassSideHit:DWORD
+    LOCAL colLightLevel:DWORD
 
     ; --------------------------------------------------------------------------
     ; 1. Fast Background Clear: Ceiling (Top Half) and Floor (Bottom Half)
     ; --------------------------------------------------------------------------
+    invoke SamplePointLighting,playerX,playerY,0,0
     mov edi, OFFSET screenBuffer
-    mov eax, mapCeilingColor
+    mov edx,mapCeilingColor
+    call ShadeLightPixel
+    mov eax,edx
+    cmp lightingMode,0
+    jne @F
     cmp playerFlashTimer, 0
     je @F
     add eax, 00202020h ; Dynamic Muzzle Flash ambient lighting boost
@@ -49,7 +55,11 @@ Render3DScene PROC uses ebx ecx edx esi edi
     mov ecx, (SCREEN_W * SCREEN_HALF_H)
     rep stosd
 
-    mov eax, mapFloorColor
+    mov edx,mapFloorColor
+    call ShadeLightPixel
+    mov eax,edx
+    cmp lightingMode,0
+    jne @F
     cmp playerFlashTimer, 0
     je @F
     add eax, 00202020h ; Dynamic Muzzle Flash ambient lighting boost
@@ -473,6 +483,11 @@ wall_texture_ready:
     imul eax, texStep
     mov texPos, eax
 
+    ; Compute wall lighting (baked lightmap + dynamic point lights + flashlight)
+    invoke ComputeWallLightLevel, screenX, mapX, mapY, sideHit, stepX, stepY,\
+                                  rawDist, perpWallDist, rayAngle, rayDirX, rayDirY
+    mov colLightLevel, eax
+
     ; --------------------------------------------------------------------------
     ; Draw Vertical Wall Stripe
     ; --------------------------------------------------------------------------
@@ -501,6 +516,9 @@ wall_pixel_loop:
     add eax, texPtr
     mov edx, [eax]              ; Sampled Color (BGRA)
 
+    cmp lightingMode, LIGHTING_MODE_NONE
+    jne apply_col_light
+
     ; Wall shading: Y-facing walls darkened 50% for 3D depth perception
     cmp sideHit, 1
     jne apply_distance_fog
@@ -521,6 +539,10 @@ apply_distance_fog:
 
 make_pitch_black:
     mov edx, 00111111h
+    jmp write_wall_pixel
+
+apply_col_light:
+    call ShadeLightPixel
 
 write_wall_pixel:
     mov eax, pScreenPixel
@@ -599,6 +621,7 @@ RenderSprites PROC uses ebx ecx edx esi edi passFilter:DWORD
     LOCAL texPtr:DWORD, pPixel:DWORD
     LOCAL camCos:DWORD, camSin:DWORD
     LOCAL keyIdx:DWORD, keyDist:DWORD
+    LOCAL sprLightLevel:DWORD
 
     mov eax, spriteCount
     test eax, eax
@@ -844,6 +867,9 @@ sprite_loop:
     mov texStepY, eax
 
     ; Render vertical stripes
+    invoke ComputeSpriteLight, spriteX, spriteY, transY
+    mov sprLightLevel, eax
+
     mov eax, drawStartX
     mov stripe, eax
 
@@ -924,6 +950,9 @@ sprite_pixel_y:
     cmp edx, COLOR_CHROMA_KEY
     je skip_sprite_pixel
 
+    cmp lightingMode, LIGHTING_MODE_NONE
+    jne apply_spr_lighting
+
     ; Distance fog (same thresholds as walls)
     mov eax, transY
     cmp eax, 350
@@ -935,6 +964,10 @@ sprite_pixel_y:
     jmp write_sprite_pixel
 sprite_pixel_dark:
     mov edx, 00111111h
+    jmp write_sprite_pixel
+
+apply_spr_lighting:
+    call ShadeLightPixel
 
 write_sprite_pixel:
     mov eax, pPixel

main.asm

@@ -112,6 +112,7 @@ include include/engine_textures.inc
 include include/engine_input.inc
 include include/engine_physics.inc
 include include/engine_entity.inc
+include include/engine_light.inc
 include include/engine_raycaster.inc
 include include/engine_render2d.inc
 include include/engine_combat.inc
@@ -158,7 +159,8 @@ Engine_Init PROC uses ebx esi edi
     call InitMathTables
     call GenerateDefaultTextures    ; Procedural baseline (always valid)
     call LoadTexturePack            ; Optional: override from assets\textures\texturepack.bin
-    call LoadMapBinary              ; Loads assets/map.dat (falls back to InitMap if missing)
+    call InitLightingSystem
+    call LoadMapBinary              ; Each room commits its own validated lighting
 
     ; 2. Register Window Class
     invoke GetModuleHandleA, 0
@@ -289,6 +291,7 @@ no_error_tick:
     call UpdatePlayer
     call UpdateEntities
     call UpdateCombat
+    call UpdateDynamicLights
 skip_movement_in_dialog:
     call Game_OnTick
 @@:

tests/cutscene_editor_checks.inl

@@ -11,7 +11,7 @@ static void RunCutsceneChecks(EditorApp& app) {
     };
     Check(app.SaveLevel("../assets/scene.dat"), "save v4 cutscene, Russian text and sound reference");
     BinaryLevel level; std::string error;
-    Check(ReadLevelFile("../assets/scene.dat",level,error) && level.header.version == 4 && level.cutscene.events.size() == 9 &&
+    Check(ReadLevelFile("../assets/scene.dat",level,error) && level.header.version == MAP_FORMAT_VERSION && level.cutscene.events.size() == 9 &&
         level.cutscene.strings[0] == "Привет, мир!" && level.cutscene.flags == CUTSCENE_AUTOPLAY,
         "v4 track round trip retains UTF8 and autoplay");
     std::string encoded;

tests/editor_regressions.cpp

@@ -22,6 +22,7 @@ static std::vector<uint8_t> Bytes(const fs::path& path) {
 }
 
 #include "cutscene_editor_checks.inl"
+#include "lighting_editor_checks.inl"
 #include "viewport_editor_checks.inl"
 
 int main(int argc, char** argv) {
@@ -138,6 +139,7 @@ int main(int argc, char** argv) {
     app.LaunchPlaytest();
     Check(!app.isEngineRunning && app.playtestDirectory.empty() && Bytes("../assets/map.dat") == originalMain,
         "missing linked map aborts F5 without data loss");
+    RunLightingChecks(app);
     RunCutsceneChecks(app);
     if (argc > 1) {
         Check(ReadLevelFile(std::string(argv[1]) + "/map.dat", preview, error), "existing project main map remains compatible");

tests/engine_regressions.asm

@@ -17,6 +17,7 @@ include include/engine_textures.inc
 include include/engine_input.inc
 include include/engine_physics.inc
 include include/engine_entity.inc
+include include/engine_light.inc
 include include/engine_raycaster.inc
 include include/engine_render2d.inc
 include include/engine_combat.inc
@@ -127,6 +128,7 @@ state_changed:
 StateUnchanged ENDP
 
 include tests/cutscene_engine_checks.inc
+include tests/lighting_engine_checks.inc
 
 AuditMain PROC
     call InitMathTables
@@ -363,6 +365,7 @@ flat_depth_ok:
     call Render3DScene
     invoke Dump, OFFSET projectFramePath, OFFSET screenBuffer, FRAME_BUFFER_SIZE
 
+    call RunLightingChecks
     call RunCutsceneChecks
     mov eax, resultCount
     inc eax

tests/lighting_editor_checks.inl

@@ -0,0 +1,65 @@
+static void RunLightingChecks(EditorApp& app) {
+    app.InitDefaultLevel();app.sprites.clear();app.transitions.clear();app.lightSources.clear();
+    memset(app.map,0,sizeof(app.map));
+    for(int i=0;i<32;++i){app.map[0][i]=app.map[31][i]=app.map[i][0]=app.map[i][31]=1;app.map[i][10]=1;}
+    app.playerStartX=2;app.playerStartY=5;app.playerStartAngle=0;
+    app.lightingMode=2;app.ambientLightLevel=10;app.isFlashlightOn=false;
+    EditorLightSource fixed;fixed.x=352;fixed.y=352;fixed.radius=900;fixed.intensity=220;fixed.curIntensity=220;
+    fixed.lightType=LIGHT_TYPE_STATIC;fixed.flags=LIGHT_FLAG_ACTIVE|LIGHT_FLAG_SHADOWS;fixed.color=0xFF0000;
+    app.lightSources.push_back(fixed);app.BakeLighting();
+    auto red=app.bakedLightRGB[5*32+5];
+    Check(((red>>16)&255)>100 && (red&0xFFFF)==0x0A0A,"static bake preserves RGB light color");
+    Check(app.bakedLightRGB[5*32+14]==0x0A0A0A,"baked light cannot cross a wall or smooth through it");
+    auto before=app.bakedLightRGB;
+    EditorLightSource moving=fixed;moving.x=480;moving.lightType=LIGHT_TYPE_POINT;moving.color=0x0000FF;
+    app.lightSources.push_back(moving);app.BakeLighting();
+    Check(app.bakedLightRGB==before,"dynamic lights never enter the static bake");
+    app.map[5][7]=CELL_DOOR;
+    Check(!app.CastLightRay(352,352,608,352),"closed door blocks editor light rays");
+    app.map[5][7]=CELL_DOOR_OPEN;
+    Check(app.CastLightRay(352,352,608,352),"open door transmits editor light rays");
+    app.map[5][7]=0;app.map[5][6]=1;
+    Check(!app.CastLightRay(352,352,416,416),"diagonal light cannot leak through a blocked corner");
+    app.map[5][6]=0;
+    app.lightSources[0].flags=LIGHT_FLAG_ACTIVE;app.BakeLighting();
+    Check(((app.bakedLightRGB[5*32+14]>>16)&255)>10,"disabling shadows permits light across walls");
+    app.lightSources[0].flags|=LIGHT_FLAG_SHADOWS;app.BakeLighting();
+    app.PushUndo();app.lightSources[0].color=0x00FF00;app.ambientLightLevel=25;app.lightingMode=1;app.BakeLighting();
+    app.Undo();
+    Check(app.lightSources[0].color==0xFF0000 && app.ambientLightLevel==10 && app.lightingMode==2 && app.bakedLightRGB==before,
+          "undo restores sources, settings and the exact baked RGB data");
+    app.Redo();Check(app.lightSources[0].color==0x00FF00 && app.ambientLightLevel==25,"redo restores authored lighting");
+    app.Undo();
+    app.lightSources[0].x+=1;
+    Check(app.LightingNeedsBake(),"editing static lights marks the bake out of date");
+    app.lightSources[0].x-=1;app.lightSources[1].x+=64;
+    Check(!app.LightingNeedsBake(),"moving a realtime source does not invalidate static lighting");
+    app.lightSources[1].x-=64;
+    Check(app.SaveLevel("../assets/lit.dat"),"save v5 authored lights and persistent RGB bake");
+    std::ofstream reference("../assets/lighting_reference.bin",std::ios::binary);
+    reference.write(reinterpret_cast<const char*>(app.bakedLightRGB.data()),4096);reference.close();
+    auto valid=Bytes("../assets/lit.dat");
+    BinaryLevel loaded;std::string error;
+    Check(ReadLevelFile("../assets/lit.dat",loaded,error) && loaded.header.version==5 && loaded.lighting.lights.size()==2 &&
+          loaded.lighting.settings.flashlight==0 && loaded.lighting.rgb==app.bakedLightRGB,"v5 lighting round trip is lossless");
+    app.lightSources[0].radius=0;
+    Check(!app.SaveLevel("../assets/lit.dat") && Bytes("../assets/lit.dat")==valid,"invalid light cannot overwrite an existing level");
+    app.lightSources[0].radius=900;
+    app.lightSources[0].lightType=LIGHT_TYPE_BURST;
+    Check(!app.SaveLevel("../assets/lit.dat") && Bytes("../assets/lit.dat")==valid,"internal burst slots cannot be serialized as authored lights");
+    app.lightSources[0].lightType=LIGHT_TYPE_STATIC;
+    auto bad=valid;bad[34]=14;
+    {std::ofstream out("../assets/lit_badcount.dat",std::ios::binary);out.write(reinterpret_cast<const char*>(bad.data()),bad.size());}
+    bad=valid;uint32_t invalidRadius=0; // settings start after header and grid; no sprites, transitions or script
+    memcpy(bad.data()+38+1024+32+8,&invalidRadius,4);
+    {std::ofstream out("../assets/lit_badradius.dat",std::ios::binary);out.write(reinterpret_cast<const char*>(bad.data()),bad.size());}
+    bad=valid;bad.back()=255;
+    {std::ofstream out("../assets/lit_badrgb.dat",std::ios::binary);out.write(reinterpret_cast<const char*>(bad.data()),bad.size());}
+    Check(!app.LoadLevel("../assets/lit_badcount.dat") && app.lightSources.size()==2,"malformed lighting count preserves the editor scene");
+    Check(!app.LoadLevel("../assets/lit_badradius.dat"),"malformed light radius rejected before scene replacement");
+    Check(!app.LoadLevel("../assets/lit_badrgb.dat"),"invalid baked RGB padding rejected before scene replacement");
+    std::string start,engine;
+    Check(app.PreparePlaytest(start,engine),"F5 packages v5 lighting with the current unsaved map");app.CleanupPlaytest();
+    app.LoadLevel("../assets/map.dat");
+    Check(app.lightSources.empty() && app.lightingMode==0,"legacy maps clear old lights and retain classic rendering");
+}

tests/lighting_engine_checks.inc

@@ -0,0 +1,103 @@
+.data
+lightFile db 'lit.dat',0
+lightBadCount db 'lit_badcount.dat',0
+lightBadRadius db 'lit_badradius.dat',0
+lightBadRGB db 'lit_badrgb.dat',0
+lightBakeDump db 'lighting_bake.bin',0
+lightFrameDump db 'lighting_frame.bin',0
+lightSavedRed dd 0
+lightSavedBlue dd 0
+lightSavedPulse dd 0
+.code
+RunLightingChecks PROC uses ebx ecx edx esi edi
+    invoke LoadSublevelBinary,OFFSET lightFile,-1,-1,0
+    CHECK eax,1 ; v5 authored lighting loads in ASM
+    CHECK authoredLightCount,2 ; all authored lights reach runtime slots
+    CHECK lightingMode,2 ; map lighting mode loads without a startup override
+    CHECK isFlashlightOn,0 ; saved flashlight toggle reaches the game
+    CHECK DWORD PTR [lightSources+40+LightSource.color],00FF0000h ; static light color retained on load
+    call Render3DScene
+    invoke Dump,OFFSET lightFrameDump,OFFSET screenBuffer,FRAME_BUFFER_SIZE
+    call BakeMapLighting
+    invoke Dump,OFFSET lightBakeDump,OFFSET lightGridRGB,4096
+    CHECK DWORD PTR [lightGridRGB+(5*32+14)*4],000A0A0Ah ; static light cannot leak through a wall
+    mov lightingMode,1
+    invoke SamplePointLighting,480,352,0,0
+    mov eax,lightRed
+    mov lightSavedRed,eax
+    mov eax,lightBlue
+    mov lightSavedBlue,eax
+    mov lightingMode,2
+    call UpdateDynamicLights
+    invoke SamplePointLighting,480,352,0,0
+    CHECK lightRed,lightSavedRed ; dynamic mode does not count static light twice
+    xor eax,eax
+    mov ebx,lightBlue
+    cmp ebx,lightSavedBlue
+    seta al
+    CHECK eax,1 ; realtime blue light contributes beyond the baked map
+    mov DWORD PTR [lightSources+80+LightSource.x],928
+    invoke SamplePointLighting,480,352,0,0
+    CHECK lightBlue,10 ; dynamic source is occluded by a separating wall
+    mov DWORD PTR [lightSources+80+LightSource.flags],LIGHT_FLAG_ACTIVE
+    invoke SamplePointLighting,480,352,0,0
+    xor eax,eax
+    cmp lightBlue,10
+    seta al
+    CHECK eax,1 ; disabling dynamic shadows allows unoccluded contribution
+    mov DWORD PTR [lightSources+80+LightSource.lightType],LIGHT_TYPE_PULSE
+    mov lightingTick,0
+    call UpdateDynamicLights
+    mov eax,DWORD PTR [lightSources+80+LightSource.curIntensity]
+    mov lightSavedPulse,eax
+    mov lightingTick,31
+    call UpdateDynamicLights
+    mov eax,DWORD PTR [lightSources+80+LightSource.curIntensity]
+    cmp eax,lightSavedPulse
+    setne al
+    movzx eax,al
+    CHECK eax,1 ; pulse light changes intensity with the simulation clock
+    mov DWORD PTR [lightSources+13*40+LightSource.intensity],77
+    invoke SpawnMuzzleFlashLight,160,160
+    invoke SpawnExplosionLight,160,160
+    CHECK DWORD PTR [lightSources+13*40+LightSource.intensity],77 ; combat bursts cannot overwrite authored light slots
+    call UpdateDynamicLights
+    CHECK DWORD PTR [lightSources+14*40+LightSource.curIntensity],180 ; muzzle light decays in its reserved slot
+    call InitLightingSystem
+    mov lightingMode,2
+    mov edi,OFFSET lightGridRGB
+    mov ecx,1024
+    mov eax,000A0A0Ah
+    rep stosd
+    mov playerX,160
+    mov playerY,160
+    mov playerAngle,0
+    invoke SamplePointLighting,288,160,0,0
+    xor eax,eax
+    cmp lightRed,10
+    seta al
+    CHECK eax,1 ; flashlight illuminates points inside its forward cone
+    invoke SamplePointLighting,160,288,0,0
+    CHECK lightRed,10 ; flashlight cannot illuminate sprites outside its cone
+    mov BYTE PTR [gameMap+2*32+3],CELL_DOOR
+    invoke SamplePointLighting,288,160,0,0
+    CHECK lightRed,10 ; a closed door blocks the player flashlight
+    mov BYTE PTR [gameMap+2*32+3],CELL_DOOR_OPEN
+    invoke CastLightRay,160,160,288,160
+    CHECK eax,1 ; an open door transmits dynamic light
+    mov BYTE PTR [gameMap+5*32+6],CELL_BRICK
+    invoke CastLightRay,352,352,416,416
+    CHECK eax,0 ; ASM light rays reject diagonal corner leaks
+    invoke LoadSublevelBinary,OFFSET lightFile,-1,-1,0
+    invoke LoadSublevelBinary,OFFSET lightBadCount,-1,-1,0
+    CHECK eax,0 ; excessive lighting count rejected before committing a room
+    CHECK authoredLightCount,2 ; malformed lighting preserves current authored lights
+    invoke LoadSublevelBinary,OFFSET lightBadRadius,-1,-1,0
+    CHECK eax,0 ; zero radius rejected without a divide by zero
+    invoke LoadSublevelBinary,OFFSET lightBadRGB,-1,-1,0
+    CHECK eax,0 ; malformed baked RGB cannot replace current lighting
+    invoke LoadSublevelBinary,OFFSET mainPath,-1,-1,0
+    CHECK authoredLightCount,0 ; loading a legacy room clears stale dynamic sources
+    CHECK lightingMode,0 ; legacy room restores classic lighting mode
+    ret
+RunLightingChecks ENDP

tests/viewport_editor_checks.inl

@@ -49,6 +49,13 @@ static void RunViewportChecks(EditorApp& app, const char* actualEngine) {
         Check(equal,"DX11 texture pixels match the ASM framebuffer with opaque alpha");
         context->Release();
     }
+    app.LoadLevel("../assets/lit.dat");app.showCutsceneTimeline=false;app.lightingMode=1;
+    Check(pump(),"saved static lighting arrives in the live viewport");
+    auto bakedFrame=app.previewPixels;app.lightingMode=2;
+    Check(pump() && app.previewPixels!=bakedFrame && app.previewPacket->lightCount==2,
+          "authored dynamic lights visibly affect the embedded game view");
+    auto dynamicFrame=app.previewPixels;app.lightSources[1].x+=256;
+    Check(pump() && app.previewPixels!=dynamicFrame,"moving a dynamic light updates the image without rebaking");
     app.StopEnginePreview();
     Check(!app.previewProcess.hProcess && !app.previewPacket && !app.previewMapping,"closing viewport releases renderer process and mapping");
     app.ShutdownD3D();device->Release();app.showCutsceneTimeline=false;

tools/test_preview_ipc.py

@@ -9,16 +9,18 @@ import subprocess
 import time
 
 ROOT = Path(__file__).resolve().parents[1]
-SIZE, TEXTURES, PIXELS = 1357792, 2016, 1050592
+SIZE, TEXTURES, PIXELS = 1362408, 2016, 1050592
 
 
-def check_preview(engine, expected=None, output=None):
+def check_preview(engine, expected=None, output=None, level_path=None):
     name = f"Local\\EblanPreview-test-{os.getpid()}-{time.monotonic_ns()}"
     with mmap.mmap(-1, SIZE, tagname=name) as packet:
         base = C.addressof(C.c_char.from_buffer(packet))
         state = C.cast(base+8, C.POINTER(C.c_long))
-        struct.pack_into("<4I3i6I", packet, 0, 0x56504245, 1, 0, os.getpid(), 160, 1024, 0,
+        struct.pack_into("<4I3i6I", packet, 0, 0x56504245, 2, 0, os.getpid(), 160, 1024, 0,
                          0x383838, 0x222222, 0, 0, 0, 1)
+        struct.pack_into("<8I",packet,52,0,40,0,0,384,240,45,0)
+        packet[1358312:1358312+4096]=struct.pack("<I",0x282828)*1024
         for y in range(32): packet[128+y*32+10] = 1
         # Flat red wall, other slots black; proves texture upload rather than fallback.
         packet[TEXTURES+65536:TEXTURES+2*65536] = struct.pack("<I",0xE02010)*16384
@@ -53,7 +55,7 @@ def check_preview(engine, expected=None, output=None):
             assert subtitle!=frame, "Subtitle overlay missing"
             # Compare the live IPC output with a direct Render3DScene regression dump.
             if expected:
-                data=(ROOT/"assets/map.dat").read_bytes()
+                data=Path(level_path or ROOT/"assets/map.dat").read_bytes()
                 h=struct.unpack_from("<I7HII",data)
                 version=h[1]; count=h[7]
                 struct.pack_into("<3i",packet,16,h[4]*64+32,h[5]*64+32,h[6])
@@ -65,6 +67,16 @@ def check_preview(engine, expected=None, output=None):
                         x,y=struct.unpack_from("<ii",sprites,i*24)
                         struct.pack_into("<ii",sprites,i*24,x>>16,y>>16)
                 packet[1152:1152+len(sprites)]=sprites
+                if version>=5:
+                    transitions,events,strings=struct.unpack_from("<3H",data,26)
+                    lights=struct.unpack_from("<H",data,34)[0]
+                    offset=1062+count*24+transitions*42+events*16+strings*96
+                    mode,ambient,flash,radius,intensity,cone,_,_=struct.unpack_from("<8I",data,offset)
+                    struct.pack_into("<7I",packet,52,mode,ambient,flash,lights,radius,intensity,cone)
+                    offset+=32
+                    packet[1357792:1357792+lights*40]=data[offset:offset+lights*40]
+                    offset+=lights*40
+                    packet[1358312:1358312+4096]=data[offset:offset+4096]
                 pack=(ROOT/"assets/textures/texturepack.bin").read_bytes()
                 packet[TEXTURES:TEXTURES+len(pack)-8]=pack[8:]
                 struct.pack_into("<I",packet,48,2)

tools/test_regressions.py

@@ -148,7 +148,7 @@ def main():
              f"/OUT:{work / 'engine_tests.exe'}", str(work / "engine_tests.obj"),
              "kernel32.lib", "user32.lib", "gdi32.lib", "winmm.lib"], work)
         run([str(work / "engine_tests.exe"), "pace map.dat"], work)
-        source = (ROOT / "tests/engine_regressions.asm").read_text() + (ROOT / "tests/cutscene_engine_checks.inc").read_text()
+        source = (ROOT / "tests/engine_regressions.asm").read_text() + (ROOT / "tests/cutscene_engine_checks.inc").read_text() + (ROOT / "tests/lighting_engine_checks.inc").read_text()
         names = re.findall(r"^\s+CHECK .*?; (.+)$", source, re.M)
         raw = (work / "engine_results.bin").read_bytes()
         values = struct.unpack(f"<{len(raw)//4}I", raw)
@@ -174,10 +174,14 @@ def main():
         if (work / "cutscene_trace.bin").read_bytes() != reference:
             raise RuntimeError("ASM and editor cinematic players disagree on frame-by-frame state")
         print("PASS editor and ASM cutscene state agrees on every tested frame")
+        if (work / "lighting_bake.bin").read_bytes() != (work / "assets/lighting_reference.bin").read_bytes():
+            raise RuntimeError("Editor and ASM static RGB bakes differ")
+        print("PASS all 1024 baked RGB cells match between the editor and ASM")
         viewport_spec = importlib.util.spec_from_file_location("preview_ipc", ROOT / "tools/test_preview_ipc.py")
         viewport_tests = importlib.util.module_from_spec(viewport_spec)
         viewport_spec.loader.exec_module(viewport_tests)
         viewport_tests.check_preview(ROOT / "engine.exe",work / "project_frame.bgra",work / "live_viewport.bmp")
+        viewport_tests.check_preview(ROOT / "engine.exe",work / "lighting_frame.bin",work / "lighting_preview.bmp",work / "assets/lit.dat")
         (work / "cutscene_preview.bmp").write_bytes(bitmap_header + (work / "cutscene_frame.bgra").read_bytes())
         print("PASS original project assets remain byte-for-byte unchanged")
         succeeded = True