feat: update casino environments

build/AssemblerCasinoLauncher.cs

@@ -8,7 +8,7 @@ namespace AssemblerCasinoLauncher
 {
     static class Program
     {
-        const string ExpectedPokerSha256 = "25FBDF78EDF3DFD3F6B72657E78C3156F74931A656B4CBDB15260D496C96849A";
+        const string ExpectedPokerSha256 = "B0F5CE31D9A2467CFE8AF66CA90CC545F75318F11D149473A4377A2A278C8B23";
 
         [STAThread]
         static void Main()

casino3d.inc

@@ -170,7 +170,8 @@ include src_graphics\native_coin_data.inc
 include src_graphics\native_dice_data.inc
 include src_graphics\scratch_data.inc
 include src_graphics\hell_tower_data.inc
-include src_graphics\charms_data.inc
+include src_graphics\charms_data.inc
+include src_graphics\backrooms_data.inc
 include src_graphics\observer_data.inc
 include src_graphics\darts_data.inc
 include src_graphics\jackbox_data.inc
@@ -471,7 +472,7 @@ screenBuffer       dd SCREEN_SIZE dup(?)
 ALIGN 4
 zBuffer            dd SCREEN_W dup(?)
 ALIGN 4
-texturesBuffer     dd (104 * 128 * 128) dup(?)
+texturesBuffer     dd (185 * 128 * 128) dup(?)
 
 hudNumBuffer       db 32 dup(?)
 
@@ -3249,6 +3250,25 @@ dice_start_roll:
     invoke RandomRange3D, 6
     inc eax
     mov dice3d_val2, eax
+    call BackroomsLuck3D
+    cmp eax,-1
+    je br_dice_fixed
+    xor eax,1
+    mov ecx,dice3d_choice
+    dec ecx
+    xor eax,ecx
+    mov edx,dice3d_val1
+    add edx,dice3d_val2
+    and edx,1
+    cmp eax,edx
+    je br_dice_fixed
+    xor edx,edx
+    mov eax,dice3d_val2
+    mov ecx,6
+    div ecx
+    inc edx
+    mov dice3d_val2,edx
+br_dice_fixed:
     invoke PlayCasinoSound3D, OFFSET soundDiceRoll, 0, 1
     call SaveProgress3D
     ret
@@ -3485,6 +3505,21 @@ InitSkullsGame ENDP
 FinalizeSkullsGuess PROC uses ebx
     cmp skulls3d_state,3
     jne skulls_guess_done
+    cmp brSkullsLuck3D,-1
+    je br_skulls_fixed
+    mov eax,skulls3d_choice
+    cmp brSkullsLuck3D,1
+    je @F
+    inc eax
+    xor edx,edx
+    mov ecx,3
+    div ecx
+    mov eax,edx
+@@:
+    mov skulls3d_ballPos,eax
+    ; Reality distortion explicitly covers relocation before the reveal.
+    mov skulls3d_timer,0
+br_skulls_fixed:
     mov eax, skulls3d_choice
     cmp eax, skulls3d_ballPos
     jne skulls_guess_wrong
@@ -3568,6 +3603,8 @@ skulls_bet_down:
     ret
 
 skulls_start_game:
+    call BackroomsLuck3D
+    mov brSkullsLuck3D,eax
     mov eax, skulls3d_bet
     cmp eax, bankroll
     jle @F
@@ -3716,6 +3753,16 @@ RenderSkullsGame PROC uses ebx esi edi
     jne @F
     invoke DrawString8x8, 28, 62, OFFSET textSkullsPhase3, 00FFFF00h
     jmp skulls_draw_idle_cups
+@@:
+    ; Short artifact glitch, then reveal the actual ball and matching payout.
+    cmp brSkullsLuck3D,-1
+    je @F
+    cmp skulls3d_timer,12
+    jae @F
+    inc skulls3d_timer
+    invoke DrawBox,8,76,304,122,00130F20h
+    invoke DrawString8x8,108,128,OFFSET brRealityGlitch3D,00FF88CCh
+    jmp skulls_render_controls
 @@:
     ; Phase 4: Reveal outcome
     mov eax, skulls3d_win
@@ -4633,6 +4680,8 @@ check_total_movement:
     mov playerY, eax
 
 input_action:
+    cmp brActive3D,0
+    jne player_input_complete
     cmp engineMode,MODE_STAIRS
     je player_input_complete
     invoke Pressed3D, 45h
@@ -4706,9 +4755,12 @@ CheckInteractions ENDP
 ; (Legacy console arcade bezel bridge removed)
 
 Trigger3DInteraction PROC
+    cmp brActive3D,0
+    jne trigger_backrooms_station
     call TriggerHallInteraction3D
     test eax, eax
     jnz trigger_done
+trigger_backrooms_station:
     mov eax, interactTargetId
     test eax, eax
     jz trigger_done
@@ -5200,7 +5252,8 @@ include src_graphics\hell_tower.inc
 include src_graphics\charms.inc
 include src_graphics\observer.inc
 include src_graphics\darts.inc
-include src_graphics\jackbox.inc
+include src_graphics\jackbox.inc
+include src_graphics\backrooms.inc
 
 ; --- Main Loop of the 3D Casino Engine ---
 StartHellTower3D PROC uses ebx esi edi
@@ -5279,6 +5332,9 @@ engine_observer_skip:
     cmp engineMode, MODE_WALK
     jne leave_table
 pause_interior_walk:
+    cmp brCutscene3D,0
+    jne engine_tick
+    mov brEntryHold3D,0
     xor paused3D, 1
     jmp engine_tick
 leave_table:
@@ -5343,10 +5399,15 @@ check_arrival_mode:
 check_walk_mode:
     cmp engineMode, MODE_WALK
     jne check_slots_mode
+    cmp brActive3D,0
+    jne engine_backrooms
     call UpdateHall3D
     call UpdateCamera3D
     call CheckInteractions
     call HandlePlayerInput
+    call BackroomsEntry3D
+    cmp brActive3D,0
+    jne engine_backrooms
     call HandleJukeboxKeys3D
     call UpdateInteriorTravel3D
     call UpdateInteriorEye3D
@@ -5365,6 +5426,14 @@ walk_world_ready:
     call RenderHUD
     call RenderMinimap
     jmp present_frame
+engine_backrooms:
+    call HandleBackrooms3D
+    cmp brActive3D,0
+    je check_walk_mode
+    cmp engineMode,MODE_WALK
+    jne check_slots_mode
+    call RenderBackrooms3D
+    jmp present_frame
 check_slots_mode:
     cmp engineMode,MODE_JACKBOX
     jne check_jackbox_done
@@ -5531,6 +5600,7 @@ check_russian_mode:
     call RenderRussianGame3D
     jmp present_frame
 draw_pause:
+    mov brEntryHold3D,0
     invoke DrawBoxBorder, 28, 36, 264, 168, 00151C21h, 00D8BC6Ah, 2
     invoke DrawString8x8, 44, 48, OFFSET textPause3D, 00FFFFFFh
     cmp displayFill3D, 0
@@ -5559,7 +5629,10 @@ pause_draw_quality_value:
     invoke DrawString8x8, 44, 130, OFFSET textSoundLevel3D, 00BBBBBBh
     invoke FormatNumber, settingsVolume, OFFSET hudNumBuffer
     invoke DrawString8x8, 124, 130, OFFSET hudNumBuffer, 00FFFFFFh
-    invoke DrawString8x8, 44, 150, OFFSET textFullscreenKey3D, 00A0A0A0h
+    cmp brOwned3D,0
+    jne @F
+    invoke DrawString8x8, 44, 150, OFFSET textFullscreenKey3D, 00A0A0A0h
+@@:
     invoke DrawString8x8, 44, 170, OFFSET textResume3D, 00D8BC6Ah
     invoke DrawString8x8, 44, 188, OFFSET textQuit3D, 00BBBBBBh
     invoke Pressed3D, 31h
@@ -5597,12 +5670,37 @@ pause_low_spec_saved:
     call ApplySoundVolume
     call SaveProgress3D
 @@:
+    cmp brOwned3D,0
+    je br_pause_inventory_done
+    invoke DrawString8x8,44,150,OFFSET brToggle3D,00D8BC6Ah
+    invoke DrawString8x8,36,214,OFFSET brInventory3D,00D8BC6Ah
+    mov edx,OFFSET brDisabledText3D
+    cmp brEnabled3D,0
+    je @F
+    mov edx,OFFSET brEnabledText3D
+@@:
+    invoke DrawString8x8,248,150,edx,00FFFFFFh
+    invoke Pressed3D,52h
+    test eax,eax
+    jz br_pause_inventory_done
+    xor brEnabled3D,1
+    call SaveProgress3D
+br_pause_inventory_done:
     invoke Pressed3D, 51h
     test eax, eax
     jz @F
     call SaveProgress3D
     jmp engine_shutdown
 present_frame:
+    cmp brActive3D,0
+    je br_record_clock_done
+    cmp engineMode,MODE_WALK
+    je br_record_clock_done
+    cmp paused3D,0
+    jne br_record_clock_done
+    mov eax,deltaTime3D
+    add brClock3D,eax
+br_record_clock_done:
     call UpdateJukeboxAudio3D
     call RenderTowerInGameBadge
     call RenderJukeboxVolumeHUD
@@ -5638,6 +5736,7 @@ present_frame:
     invoke Sleep, ecx
     jmp engine_loop
 engine_idle:
+    mov brEntryHold3D,0
     call UnlockMouse3D
     invoke Sleep, 50
     jmp engine_loop
@@ -5659,6 +5758,7 @@ engine_shutdown:
 @@:
     call SaveProgress3D
     invoke PlayCasinoSound3D, 0, 0, 0
+    invoke FreeAnimPack3D,OFFSET brMaterials3D
     call FreeRussianAssets3D
     call FreeDarts3D
     call FreeStartupAssets3D

poker.asm

@@ -820,7 +820,14 @@ save_stats_played_loop:
     mov DWORD PTR [saveBuffer+296],eax
     mov eax,charmEnabledMask3D
     mov DWORD PTR [saveBuffer+300],eax
-    mov DWORD PTR [saveBuffer+304],2
+    mov eax,brOwned3D
+    shl eax,16
+    mov ecx,brEnabled3D
+    and ecx,brOwned3D
+    shl ecx,17
+    or eax,ecx
+    or eax,2
+    mov DWORD PTR [saveBuffer+304],eax
     invoke ArtifactSaveSignature3D,OFFSET saveBuffer
     mov DWORD PTR [saveBuffer+308],eax
     call BuildSaveFullPath
@@ -887,6 +894,14 @@ load_file_opened:
     mov charmDevilUses,eax
     mov eax,DWORD PTR [saveBuffer+300]
     mov charmEnabledMask3D,eax
+    mov eax,DWORD PTR [saveBuffer+304]
+    shr eax,16
+    and eax,1
+    mov brOwned3D,eax
+    mov eax,DWORD PTR [saveBuffer+304]
+    shr eax,17
+    and eax,1
+    mov brEnabled3D,eax
 load_signature_ok:
     mov eax, DWORD PTR [saveBuffer+4]
     mov bankroll, eax
@@ -2043,7 +2058,14 @@ test_error_exit_engine:
 RunHellTowerTest3D ENDP
 ENDIF
 
+IFDEF BACKROOMS_TEST
+include tools/tests/backrooms_test.inc
+ENDIF
 main PROC
+IFDEF BACKROOMS_TEST
+    call RunBackroomsTest3D
+    invoke ExitProcess,eax
+ENDIF
 IFDEF HELL_TOWER_TEST
     call RunHellTowerTest3D
     invoke ExitProcess,eax

src_graphics/artifact_shop.inc

@@ -1,4 +1,7 @@
 HandleArtifactShop3D PROC uses ebx
+    call HandleBackroomsInventory3D
+    test eax,eax
+    jnz artifact_shop_done
     invoke Pressed3D,09h
     test eax,eax
     jz @F
@@ -95,6 +98,11 @@ HandleArtifactShop3D ENDP
 
 RenderArtifactShop3D PROC uses ebx esi edi
     local y:DWORD,x:DWORD,ink:DWORD
+    cmp brInventoryOpen3D,0
+    je @F
+    call RenderBackroomsInventory3D
+    ret
+@@:
     invoke DrawBox,0,0,320,240,0015191Bh
     invoke DrawBox,0,0,320,24,002B302Ah
     invoke DrawString8x8,8,7,OFFSET artifactShopTitle3D,00EED5A0h
@@ -140,7 +148,13 @@ artifact_shop_card:
     invoke DrawString8x8,120,77,charmDescs3D[ebx*4],00FFFFFFh
     ; Detail descriptions use full width below cards to avoid clipped text.
     invoke DrawString8x8,8,216,artifactRules3D[ebx*4],00DDCDAAh
+    cmp brOwned3D,0
+    je @F
+    invoke DrawString8x8,8,228,OFFSET brInventoryHelp3D,00D8BC6Ah
+    jmp br_shop_help_done
+@@:
     invoke DrawString8x8,8,228,OFFSET artifactHelp3D,0099AAA5h
+br_shop_help_done:
     invoke DrawString8x8,120,96,OFFSET artifactPack3D,0099AAA5h
     invoke FormatNumber,charmUsesPack3D[ebx*4],OFFSET artifactNum3D
     invoke DrawString8x8,280,96,OFFSET artifactNum3D,00FFFFFFh

src_graphics/artifact_system.inc

@@ -32,8 +32,15 @@ ValidateArtifactSave3D PROC uses esi edi source:DWORD
     mov esi,source
     cmp DWORD PTR [esi+280],32465241h
     jne artifact_save_invalid
-    cmp DWORD PTR [esi+304],2
+    mov eax,[esi+304]
+    and eax,0FFFCFFFFh
+    cmp eax,2
     jne artifact_save_invalid
+    test DWORD PTR [esi+304],20000h
+    jz @F
+    test DWORD PTR [esi+304],10000h
+    jz artifact_save_invalid
+@@:
     invoke ArtifactSaveSignature3D,esi
     cmp eax,[esi+308]
     jne artifact_save_invalid
@@ -65,6 +72,8 @@ ArtifactCredit3D PROC amount:DWORD
 ArtifactCredit3D ENDP
 
 ResetArtifacts3D PROC
+    mov brOwned3D,0
+    mov brEnabled3D,1
     mov charmCloverUses,0
     mov charmHorseshoeUses,0
     mov charmSkullUses,0

src_graphics/backrooms_data.inc

@@ -0,0 +1,86 @@
+; Dedicated world/session. All coordinates are 16.16, all time is active ms.
+HALL_BACKROOMS equ 6
+BR_WALL equ 180
+BR_FLOOR equ 181
+BR_CEILING equ 182
+BR_LAMP equ 183
+BR_EXIT equ 184
+BackroomsEntry3D PROTO
+BeginBackrooms3D PROTO
+GenerateBackrooms3D PROTO
+HandleBackrooms3D PROTO
+RenderBackrooms3D PROTO
+LeaveBackrooms3D PROTO :DWORD
+BackroomsLuck3D PROTO
+BackroomsWheelLuck3D PROTO :DWORD
+BackroomsDeck3D PROTO :DWORD,:DWORD,:DWORD
+BackroomsBlackjackDeck3D PROTO
+BackroomsPokerDeck3D PROTO
+BackroomsDurakDeck3D PROTO
+BackroomsBuckshotLuck3D PROTO
+BackroomsRussianLuck3D PROTO
+BackroomsRussianCylinder3D PROTO
+LoadBackroomsAssets3D PROTO
+HandleBackroomsInventory3D PROTO
+RenderBackroomsInventory3D PROTO
+.data
+brActive3D dd 0
+brEntryHold3D dd 0
+brEntryAngle3D dd 0
+brCutscene3D dd 0
+brClock3D dd 0
+brSkullsLuck3D dd -1
+brSlotLuck3D dd -1
+brRussianLuck3D dd -1
+brBuckshotLuck3D dd -1
+brDeckTargets3D dd 16 dup(0)
+brDialogue3D dd 0
+brOwned3D dd 0
+brEnabled3D dd 1
+brVhs3D dd 1
+brExitCell3D dd 0
+brTarget3D dd -1
+brInventoryOpen3D dd 0
+brMap3D db 1024 dup(BR_WALL)
+brDistance3D dd 1024 dup(-1)
+brStack3D dd 1024 dup(0)
+brCandidates3D dd 4 dup(0)
+brSteps3D dd -64,2,64,-2
+brGames3D dd INTERACT_COIN,INTERACT_DICE,INTERACT_SLOTS_777,INTERACT_BLACKJACK,INTERACT_ROULETTE,INTERACT_SLOTS_CLOVER
+brGameCells3D dd 6 dup(0)
+brGamePacks3D dd OFFSET hallCardFurniture3D,OFFSET hallCardFurniture3D,OFFSET hallSlotFurniture3D,OFFSET hallCardFurniture3D,OFFSET hallWheelFurniture3D,OFFSET hallSlotFurniture3D
+brGameFrames3D dd 0,0,0,0,0,1
+brGamePrompts3D dd OFFSET brCoinPrompt3D,OFFSET brDicePrompt3D,OFFSET brSlotPrompt3D,OFFSET brCardPrompt3D,OFFSET brWheelPrompt3D,OFFSET brCloverPrompt3D
+brCoinPrompt3D db 'E: COIN',0
+brDicePrompt3D db 'E: DICE',0
+brSlotPrompt3D db 'E: 777',0
+brCardPrompt3D db 'E: BLACKJACK',0
+brWheelPrompt3D db 'E: ROULETTE',0
+brCloverPrompt3D db 'E: CLOVERPIT',0
+brProp3D CityProp3D <0,0,FP_1*3/5,FP_1*4/5,0,OFFSET hallCardFurniture3D>
+brMaterials3D AnimPack3D <0>
+brMaterialPath3D db "assets\sprites\backrooms\materials.bin",0
+brRec3D db 'REC',0
+brTime3D db '00:00:00',0
+brExitPrompt3D db 'E: EXIT',0
+brHelp3D db 'V: VHS  ESC: PAUSE',0
+brInventory3D db 'REALITY ERROR: 90% / INFINITE',0
+brToggle3D db 'R: TOGGLE REALITY ERROR',0
+brEnabledText3D db 'ON',0
+brDisabledText3D db 'OFF',0
+brRealityGlitch3D db 'REALITY ERROR',0
+brAward3D db 'REALITY ERROR / INFINITE / 90%',0
+brInventoryHelp3D db 'R: REALITY ERROR / E: TOGGLE',0
+brInventoryReturn3D db 'R / TAB: BACK',0
+brInventoryRules1 db '90% FAVORABLE RANDOM OUTCOME',0
+brInventoryRules2 db 'NO CHARGES / NO DUPLICATES',0
+brInventoryRules3 db 'NORMAL CASINO ONLY',0
+brInventoryRules4 db 'OFF IN TOWER / BACKROOMS',0
+brInventoryRules5 db 'SKILL / CARD RULES STILL APPLY',0
+brInventoryRules6 db 'BILLIARDS/BOWLING/DARTS UNCHANGED',0
+brGlyph3D db 0,0
+; Exact CP1251 dialogue, wrapped only at spaces by the renderer.
+brText3D db 221,242,238,32,237,229,32,242,243,242,44,32,242,251,32,237,229,32
+    db 228,238,235,230,229,237,32,225,251,242,252,32,231,228,229,241,252,44,32
+    db 241,250,229,225,232,32,239,238,32,225,240,224,242,241,234,232,32,239,230,0
+.code

src_graphics/buckshot.inc

@@ -97,6 +97,7 @@ bs_reload_next:
     inc bs3d_blankCount
     dec bs3d_liveCount
 @@:
+    call BackroomsBuckshotLuck3D
     ; The loading motion loops once per actual cartridge, then racks the pump.
     mov eax, bs3d_shellCount
     imul eax, 330

src_graphics/city_bins.inc

@@ -5,6 +5,19 @@ cityRayY3D dd SCREEN_W dup(?)
 ; Exterior-only materials do not consume or overwrite the hall's texture slots.
 ResolveCitySurface3D PROC material:DWORD
     mov eax,material
+    cmp hallLevel3D,HALL_BACKROOMS
+    jne br_surface_other_world
+    cmp eax,BR_WALL
+    jb @F
+    cmp eax,BR_EXIT
+    ja @F
+    shl eax,16
+    add eax,OFFSET texturesBuffer
+    mov ecx,128
+    mov edx,128
+    ret
+@@:
+br_surface_other_world:
     cmp eax,BW_MATERIAL
     jb @F
     cmp eax,BW_LAST_MATERIAL
@@ -290,6 +303,27 @@ city_vertical_along:
     dec edx
     and eax, edx
 @@:
+    ; Door lettering faces the viewer on either wall face. Other worlds keep UVs.
+    cmp hallLevel3D,HALL_BACKROOMS
+    jne br_door_uv_done
+    cmp material,BR_EXIT
+    jne br_door_uv_done
+    cmp axis,0
+    jne br_door_uv_y
+    mov edx,playerX
+    cmp edx,coordinate
+    jle br_door_uv_done
+    jmp br_door_uv_flip
+br_door_uv_y:
+    mov edx,playerY
+    cmp edx,coordinate
+    jge br_door_uv_done
+br_door_uv_flip:
+    mov edx,textureW
+    dec edx
+    sub edx,eax
+    mov eax,edx
+br_door_uv_done:
     mov sourceX, eax
     mov eax, viewEye3D
     sub eax, zHigh

src_graphics/hall_scene.inc

@@ -19,7 +19,13 @@ hall_plane_row:
     sub ecx, eax
     mov eax, viewCeiling3D
     sub eax, viewEye3D
-    mov material, 101
+    mov material, 101
+    cmp brActive3D,0
+    je @F
+    cmp hallLevel3D,HALL_BACKROOMS
+    jne @F
+    mov material,BR_CEILING
+@@:
     cmp hallLevel3D,2
     jne @F
     mov material,125
@@ -130,7 +136,27 @@ hall_plane_crossroad:
     jl hall_plane_sample
 hall_plane_sidewalk:
     mov ebx, 72
-hall_plane_sample:
+hall_plane_sample:
+    cmp brActive3D,0
+    je br_plane_sample_done
+    cmp hallLevel3D,HALL_BACKROOMS
+    jne br_plane_sample_done
+    mov eax,row
+    cmp eax,viewHorizon3D
+    jae br_plane_sample_done
+    mov ebx,BR_CEILING
+    mov eax,wx
+    shr eax,16
+    and eax,3
+    cmp eax,1
+    jne br_plane_sample_done
+    mov eax,wy
+    shr eax,16
+    and eax,3
+    cmp eax,1
+    jne br_plane_sample_done
+    mov ebx,BR_LAMP
+br_plane_sample_done:
     cmp outdoorRender3D, 0
     jne hall_plane_low_sample
     mov eax, row

src_graphics/native_blackjack.inc

@@ -120,6 +120,7 @@ StartNativeBlackjack3D PROC
     mov cbDealerCount3D, 2
     mov cbCursor3D, 4
     invoke ShuffleCards3D, OFFSET cbDeck3D
+    call BackroomsBlackjackDeck3D
     mov eax, cbDeck3D[0]
     mov cbPlayer3D[0], eax
     mov eax, cbDeck3D[4]

src_graphics/native_clover.inc

@@ -104,6 +104,41 @@ clp_start_rows:
     inc esi
     cmp esi,5
     jb clp_start_column
+    call BackroomsLuck3D
+    cmp eax,-1
+    je br_clover_fixed
+    mov ebx,eax
+    xor esi,esi
+br_clover_row:
+    xor edi,edi
+br_clover_column:
+    mov eax,esi
+    imul eax,2
+    add eax,edi
+    xor edx,edx
+    mov ecx,7
+    div ecx
+    cmp ebx,1
+    jne @F
+    mov edx,1
+@@:
+    mov eax,esi
+    imul eax,5
+    add eax,edi
+    mov clpGrid3D[eax*4],edx
+    mov eax,clpSteps3D[edi*4]
+    add eax,esi
+    mov ecx,edi
+    shl ecx,8
+    lea ecx,clpTape3D[ecx]
+    mov [ecx+eax*4],edx
+    inc edi
+    cmp edi,5
+    jb br_clover_column
+    inc esi
+    cmp esi,3
+    jb br_clover_row
+br_clover_fixed:
     call SaveProgress3D
     invoke PlayCasinoSound3D,OFFSET soundSlotSpin,0,1
 clp_start_done:

src_graphics/native_coin.inc

@@ -308,6 +308,16 @@ coin_native_start:
     invoke RandomRange3D,2
     inc eax
     mov coin3d_result,eax
+    call BackroomsLuck3D
+    cmp eax,-1
+    je br_coin_fixed
+    xor eax,1
+    mov ecx,coin3d_choice
+    dec ecx
+    xor eax,ecx
+    inc eax
+    mov coin3d_result,eax
+br_coin_fixed:
     call SaveProgress3D
     invoke PlayCasinoSound3D,OFFSET soundCoin,0,1
     call ClearKeys3D

src_graphics/native_durak.inc

@@ -40,6 +40,7 @@ dk_compact:
     inc esi
     cmp esi, 52
     jb dk_compact
+    call BackroomsDurakDeck3D
     mov eax, dkDeck3D[35*4]
     mov durakTrumpCard, eax
     invoke DurakCardSuit, eax

src_graphics/native_poker.inc

@@ -75,6 +75,7 @@ StartNativePoker3D PROC uses ebx esi
     mov pkRaise3D, eax
     mov pkCurrent3D, eax
     invoke ShuffleCards3D, OFFSET pkDeck3D
+    call BackroomsPokerDeck3D
     mov esi, pkButton3D
     xor esi, 1
     shl esi, 3 ; first card goes to the non-button player

src_graphics/native_slots.inc

@@ -69,11 +69,22 @@ StartNativeSlots3D PROC uses ebx esi
     mov slotLeaveAfter3D,0
     mov slotError3D,0
     mov slotEffects3D,0
+    call BackroomsLuck3D
+    mov brSlotLuck3D,eax
     xor esi,esi
 slot_start_reel:
     mov eax,slotStops3D[esi*4]
     mov slotStartStops3D[esi*4],eax
     invoke RandomRange3D,20
+    cmp brSlotLuck3D,-1
+    je br_slot_target
+    mov eax,0
+    cmp brSlotLuck3D,1
+    je br_slot_target
+    ; Distinct symbols, with no refund pair, for the unlucky 10%.
+    mov eax,esi
+    inc eax
+br_slot_target:
     mov slotTargets3D[esi*4],eax
     mov edx,slotStrip3D[eax*4]
     mov slotReel1[esi*4],edx

src_graphics/native_wheel.inc

@@ -352,6 +352,7 @@ wheel_regular_spin:
     mov roulState, 1
     mov wheelTime3D, 0
     invoke RandomRange3D, 37
+    invoke BackroomsWheelLuck3D,eax
     mov wheelResult3D, eax
     call SaveProgress3D
     invoke PlayCasinoSound3D, OFFSET soundRoulette,0,1

src_graphics/platform_code.inc

@@ -137,6 +137,12 @@ event_key_up:
     cmp ecx, 255
     ja event_done
     mov keys3D[ecx], 0
+    cmp ecx,57h
+    je event_entry_release
+    cmp ecx,26h
+    jne event_done
+event_entry_release:
+    mov brEntryHold3D,0
     jmp event_done
 event_fullscreen:
     test lp, 40000000h
@@ -144,6 +150,7 @@ event_fullscreen:
     call ToggleFullscreen3D
     jmp event_done
 event_focus_lost:
+    mov brEntryHold3D,0
     mov dtHolding3D,0
     mov dtMouseReleased3D,0
     call ClearKeys3D
@@ -505,9 +512,12 @@ UpdateCamera3D ENDP
 
 ; Four corners of a 0.3-tile-wide body; bounds checked before every map read.
 CanWalk3D PROC uses ebx esi edi px:DWORD, py:DWORD
+    cmp brActive3D,0
+    jne br_generic_collision
     invoke CanWalkHall3D, px, py
     test eax, eax
     jz walk_blocked
+br_generic_collision:
     mov esi, -9830
 walk_corner_x:
     mov edi, -9830
@@ -550,6 +560,8 @@ LoadProgress3D PROC uses ebx
     mov charmSkullUses, 0
     mov charmDevilUses, 0
     mov charmEnabledMask3D,7
+    mov brOwned3D,0
+    mov brEnabled3D,1
     invoke CreateFileA, OFFSET savePath3D, 80000000h, 1, 0, 3, 80h, 0
     cmp eax, -1
     je progress_loaded
@@ -566,7 +578,23 @@ LoadProgress3D PROC uses ebx
     cmp eax,saveData3D[36]
     jne progress_loaded
     mov eax,saveData3D[32]
-    mov charmEnabledMask3D,eax
+    test eax,0FFFCFFF0h
+    jnz progress_loaded
+    test eax,20000h
+    jz @F
+    test eax,10000h
+    jz progress_loaded
+@@:
+    mov ecx,eax
+    and ecx,15
+    mov charmEnabledMask3D,ecx
+    shr eax,16
+    and eax,1
+    mov brOwned3D,eax
+    mov eax,saveData3D[32]
+    shr eax,17
+    and eax,1
+    mov brEnabled3D,eax
     jmp progress_version_ok
 progress_legacy_version:
     cmp saveData3D, 33443343h
@@ -653,7 +681,15 @@ SaveProgress3D PROC uses ebx
     mov saveData3D[24], eax
     mov eax, charmDevilUses
     mov saveData3D[28], eax
-    mov eax,charmEnabledMask3D
+    mov eax,brOwned3D
+    and eax,1
+    shl eax,16
+    mov ecx,brEnabled3D
+    and ecx,brOwned3D
+    and ecx,1
+    shl ecx,17
+    or eax,ecx
+    or eax,charmEnabledMask3D
     mov saveData3D[32],eax
     invoke PreviewArtifactSignature3D,OFFSET saveData3D
     mov saveData3D[36],eax

src_graphics/russian_party.inc

@@ -69,6 +69,10 @@ rr_party_cartridge:
     jb rr_party_cartridge
     invoke RandomRange3D,6
     mov rr3d_chamber,eax
+    cmp rrPartyReloads3D,0
+    je @F
+    call BackroomsRussianCylinder3D
+@@:
     inc rrPartyReloads3D
     ret
 RRLoadCylinder3D ENDP

src_graphics/russian_roulette.inc

@@ -98,9 +98,11 @@ StartRussianRound3D PROC uses ebx esi
     sub bankroll, eax
     mov rr3d_payout, 0
     mov rr3d_error, 0
+    mov brRussianLuck3D,-1
     call RRLoadCylinder3D
     invoke RandomRange3D, rrPartySize3D
     mov rr3d_turn, eax
+    call BackroomsRussianLuck3D
     mov rr3d_state, RR_LOAD
     mov rr3d_timer, 0
     invoke PlayCasinoSound3D, OFFSET rrLoadSound3D, 0, 20003h

src_graphics/scratch.inc

@@ -246,6 +246,16 @@ BuyScratch3D PROC uses ebx esi edi
     jmp scratch_buy_save
 @@:
     invoke RandomRange3D,1000
+    push eax
+    call BackroomsLuck3D
+    pop edx
+    cmp eax,-1
+    je br_scratch_original
+    imul eax,650
+    jmp br_scratch_fixed
+br_scratch_original:
+    mov eax,edx
+br_scratch_fixed:
     cmp eax,600
     jb scratch_losing_bag
     xor esi,esi

src_graphics/scratch_portrait.inc

@@ -321,6 +321,16 @@ portrait_fill:
     jb portrait_fill
     mov scrPortraitOutcome3D,0
     invoke RandomRange3D,1000
+    push eax
+    call BackroomsLuck3D
+    pop edx
+    cmp eax,-1
+    je br_portrait_original
+    imul eax,920
+    jmp br_portrait_fixed
+br_portrait_original:
+    mov eax,edx
+br_portrait_fixed:
     cmp eax,600
     jb portrait_build_payout
     mov ebx,eax

tools/generators/make_backrooms_assets.py

@@ -0,0 +1,32 @@
+"""Offline-only texture packing; runtime generation/rendering stays MASM."""
+from pathlib import Path
+import struct
+from PIL import Image, ImageDraw, ImageFont
+
+ROOT = Path(__file__).resolve().parents[2]
+
+
+def main():
+    source = ROOT / 'assets/sprites/backrooms'
+    frames = []
+    for name in ('wall', 'floor', 'ceiling', 'ceiling_lamp'):
+        image = Image.open(source / f'Backrooms_{name}.jpg').convert('RGBA')
+        image = image.resize((128, 128), Image.Resampling.LANCZOS)
+        frames.append(image.tobytes('raw', 'BGRA'))
+    # Exit is an offline-generated material, not a second game implementation.
+    image = Image.new('RGBA', (128, 128), (36, 60, 38, 255))
+    draw = ImageDraw.Draw(image)
+    draw.rectangle((9, 4, 119, 127), fill=(61, 84, 55), outline=(143, 160, 98), width=5)
+    # Eye-level sign stays visible even when standing in the exit cell.
+    draw.rectangle((18, 45, 110, 73), fill=(32, 170, 77))
+    font = ImageFont.truetype('arialbd.ttf', 23)
+    draw.text((64, 59), 'EXIT', fill='white', font=font, anchor='mm')
+    draw.rectangle((94, 76, 99, 82), fill=(240, 211, 101))
+    frames.append(image.tobytes('raw', 'BGRA'))
+    out = source / 'materials.bin'
+    out.write_bytes(struct.pack('<5I', 0x314D4E41, 128, 128, len(frames), len(frames)*65536) + b''.join(frames))
+    print(f'Packed {len(frames)} Backrooms materials: {out.relative_to(ROOT)}')
+
+
+if __name__ == '__main__':
+    main()

tools/tests/backrooms_extended_test.inc

@@ -0,0 +1,391 @@
+; Additional native invariants. No player files or runtime writes.
+RunBackroomsExtendedTest3D PROC uses ebx esi edi
+    local rounds:DWORD,wins:DWORD,kind:DWORD,party:DWORD,bullets:DWORD,steps:DWORD
+    mov brOwned3D,1
+    mov brEnabled3D,0
+    mov rngSeed3D,87654
+    call BackroomsLuck3D
+    cmp eax,-1
+    jne br_extended_fail
+    cmp rngSeed3D,87654
+    jne br_extended_fail
+    mov brEnabled3D,1
+    mov obsActive3D,1
+    call BackroomsLuck3D
+    cmp eax,-1
+    jne br_extended_fail
+    mov obsActive3D,0
+    mov brTestStage,111
+    ; Actual blackjack party dealing, all guest counts.
+    mov party,0
+br_ext_bj_party:
+    mov wins,0
+    mov rounds,1000
+br_ext_bj_round:
+    mov bankroll,1000000
+    mov eax,party
+    mov cbBotCount3D,eax
+    mov cbState3D,CB_IDLE
+    call StartNativeBlackjack3D
+    cmp cbPlayerScore3D,21
+    jne @F
+    inc wins
+    cmp cbDealerScore3D,19
+    jne br_extended_fail
+@@:
+    dec rounds
+    jnz br_ext_bj_round
+    cmp wins,860
+    jb br_extended_fail
+    cmp wins,940
+    ja br_extended_fail
+    inc party
+    cmp party,4
+    jb br_ext_bj_party
+    mov cbBotCount3D,0
+    ; Every scratch design, generated by the actual purchase path.
+    mov scrReady3D,1
+    mov brTestStage,112
+    mov kind,0
+br_ext_ticket_type:
+    mov eax,kind
+    add eax,120
+    mov brTestStage,eax
+    mov wins,0
+    mov rounds,1000
+br_ext_ticket:
+    mov bankroll,1000000
+    mov scrState3D,0
+    mov scrPriceIndex3D,0
+    mov eax,kind
+    mov scrType3D,eax
+    call BuyScratch3D
+    mov eax,scrGross3D
+    test eax,eax
+    jz @F
+    inc wins
+@@:
+    cmp kind,4
+    jb @F
+    call ScratchPortraitPayout3D
+    cmp eax,scrGross3D
+    jne br_extended_fail
+@@:
+    dec rounds
+    jnz br_ext_ticket
+    cmp wins,860
+    jb br_extended_fail
+    cmp wins,940
+    ja br_extended_fail
+    inc kind
+    cmp kind,7
+    jb br_ext_ticket_type
+    ; Roulette: a real straight-up bet, including actual multiplier matching.
+    lea edi,wheelBets3D
+    mov brTestStage,113
+    xor eax,eax
+    mov ecx,49
+    rep stosd
+    mov wheelBets3D[7*4],100
+    mov wheelStake3D,100
+    mov wins,0
+    mov rounds,1000
+br_ext_wheel:
+    invoke BackroomsWheelLuck3D,0
+    cmp eax,36
+    ja br_extended_fail
+    invoke WheelBetMultiplier3D,7,eax
+    test eax,eax
+    jz @F
+    inc wins
+@@:
+    dec rounds
+    jnz br_ext_wheel
+    cmp wins,860
+    jb br_extended_fail
+    cmp wins,940
+    ja br_extended_fail
+    ; Durak: 36 distinct legal cards, correctly exposed trump on favorable deals.
+    mov rounds,1000
+br_ext_durak:
+    mov brTestStage,114
+    mov bankroll,1000000
+    mov dkState3D,DK_IDLE
+    call StartNativeDurak3D
+    xor esi,esi
+br_ext_durak_card:
+    mov eax,dkDeck3D[esi*4]
+    cmp eax,52
+    jae br_extended_fail
+    invoke DurakCardRank,eax
+    cmp eax,4
+    jb br_extended_fail
+    lea edi,[esi+1]
+br_ext_durak_unique:
+    cmp edi,36
+    jae br_ext_durak_next
+    mov eax,dkDeck3D[edi*4]
+    cmp eax,dkDeck3D[esi*4]
+    je br_extended_fail
+    inc edi
+    jmp br_ext_durak_unique
+br_ext_durak_next:
+    inc esi
+    cmp esi,36
+    jb br_ext_durak_card
+    cmp dkDeck3D,33
+    jne @F
+    cmp durakTrumpSuit,2
+    jne br_extended_fail
+@@:
+    dec rounds
+    jnz br_ext_durak
+    ; Russian roulette: real party elimination/reload rules, all 1..3 guests/bullets.
+    mov party,1
+    mov brTestStage,115
+br_ext_rr_party:
+    mov bullets,1
+br_ext_rr_bullets:
+    mov rounds,300
+    mov wins,0
+br_ext_rr_round:
+    mov brTestStage,151
+    mov eax,party
+    mov rrPartyCount3D,eax
+    call RRPartyReset3D
+    mov eax,bullets
+    mov rr3d_bullets,eax
+    mov rrPartySettled3D,0
+    mov rrPartyStake3D,50
+    mov rr3d_bet,50
+    mov rr3d_turn,0
+    call BackroomsRussianLuck3D
+    mov rrPartyReloads3D,1
+    mov steps,0
+br_ext_rr_shot:
+    mov eax,rr3d_mask
+    mov ecx,rr3d_chamber
+    bt eax,ecx
+    jnc br_ext_rr_advance
+    call RRPartyHit3D
+    cmp rrPartySettled3D,0
+    jne br_ext_rr_outcome
+br_ext_rr_advance:
+    call RRPartyNext3D
+    inc steps
+    cmp steps,100
+    jae br_extended_fail
+    jmp br_ext_rr_shot
+br_ext_rr_outcome:
+    mov brTestStage,152
+    cmp rr3d_state,RR_WIN
+    jne @F
+    inc wins
+    cmp brRussianLuck3D,1
+    jne br_extended_fail
+@@:
+    cmp brRussianLuck3D,1
+    jne @F
+    mov eax,party
+    imul eax,10
+    add eax,bullets
+    add eax,200
+    mov brTestStage,eax
+    cmp rr3d_state,RR_WIN
+    jne br_extended_fail
+@@:
+    dec rounds
+    jnz br_ext_rr_round
+    mov brTestStage,154
+    cmp wins,240
+    jb br_extended_fail
+    cmp wins,295
+    ja br_extended_fail
+    inc bullets
+    cmp bullets,4
+    jb br_ext_rr_bullets
+    inc party
+    cmp party,4
+    jb br_ext_rr_party
+    ; Buckshot permutations retain cartridge counts and valid binary identities.
+    mov rounds,1000
+br_ext_bs:
+    mov brTestStage,116
+    call BuckshotReload3D
+    xor edi,edi
+    xor esi,esi
+br_ext_bs_shell:
+    mov eax,bs3d_shells[esi*4]
+    cmp eax,1
+    ja br_extended_fail
+    add edi,eax
+    inc esi
+    cmp esi,bs3d_shellCount
+    jb br_ext_bs_shell
+    cmp edi,bs3d_liveCount
+    jne br_extended_fail
+    add edi,bs3d_blankCount
+    cmp edi,bs3d_shellCount
+    jne br_extended_fail
+    dec rounds
+    jnz br_ext_bs
+    xor eax,eax
+    ret
+br_extended_fail:
+    mov eax,brTestStage
+    ret
+RunBackroomsExtendedTest3D ENDP
+
+RunBackroomsSaveTest3D PROC uses ebx esi edi
+    ; Signed but impossible enabled-without-owned flag must be rejected.
+    mov DWORD PTR saveBuffer[304],20002h
+    invoke ArtifactSaveSignature3D,OFFSET saveBuffer
+    mov DWORD PTR saveBuffer[308],eax
+    invoke ValidateArtifactSave3D,OFFSET saveBuffer
+    test eax,eax
+    jnz br_save_fail
+    ; Native preview keeps its 40-byte, signed backward-compatible layout.
+    invoke CopyCString,OFFSET savePath3D,OFFSET brTestPreviewPath
+    mov nativeProfileActive3D,0
+    mov arrivalConfirmed3D,1
+    mov brOwned3D,1
+    mov brEnabled3D,1
+    call SaveProgress3D
+    mov brOwned3D,0
+    mov brEnabled3D,0
+    call LoadProgress3D
+    cmp brOwned3D,1
+    jne br_save_fail
+    cmp brEnabled3D,1
+    jne br_save_fail
+    mov brActive3D,1
+    mov brEnabled3D,0
+    invoke LeaveBackrooms3D,1
+    cmp brOwned3D,1
+    jne br_save_fail
+    cmp brEnabled3D,0
+    jne br_save_fail
+    call LoadProgress3D
+    cmp brEnabled3D,0
+    jne br_save_fail
+    xor eax,eax
+    ret
+br_save_fail:
+    mov eax,102
+    ret
+RunBackroomsSaveTest3D ENDP
+
+.data
+brContextModes dd MODE_COIN,MODE_DICE,MODE_SLOTS,MODE_BLACKJACK,MODE_ROULETTE,MODE_CLOVER
+brContextMap db 1024 dup(0)
+.code
+RunBackroomsContextTest3D PROC uses ebx esi edi
+    local index:DWORD,x:DWORD,y:DWORD
+    call GenerateBackrooms3D
+    mov brActive3D,1
+    mov brCutscene3D,0
+    mov hallLevel3D,HALL_BACKROOMS
+    mov worldMap3D,OFFSET brMap3D
+    lea esi,brMap3D
+    lea edi,brContextMap
+    mov ecx,256
+    rep movsd
+    mov index,0
+br_context_game:
+    mov esi,index
+    mov ebx,brGameCells3D[esi*4]
+    mov eax,ebx
+    and eax,31
+    shl eax,16
+    add eax,FP_HALF
+    mov x,eax
+    mov playerX,eax
+    mov eax,ebx
+    shr eax,5
+    shl eax,16
+    add eax,FP_HALF
+    mov y,eax
+    mov playerY,eax
+    mov playerAngle,77
+    mov engineMode,MODE_WALK
+    mov mouseLocked3D,0
+    mov deltaTime3D,16
+    call ClearKeys3D
+    mov pressedKeys3D[45h],1
+    call HandleBackrooms3D
+    mov esi,index
+    mov eax,brContextModes[esi*4]
+    cmp eax,engineMode
+    jne br_context_fail
+    cmp eax,MODE_DICE
+    jne @F
+    call DiceEscape3D
+    jmp br_context_returned
+@@:
+    call CardTableEscape3D
+br_context_returned:
+    cmp engineMode,MODE_WALK
+    jne br_context_fail
+    mov eax,x
+    cmp playerX,eax
+    jne br_context_fail
+    mov eax,y
+    cmp playerY,eax
+    jne br_context_fail
+    cmp playerAngle,77
+    jne br_context_fail
+    cmp worldMap3D,OFFSET brMap3D
+    jne br_context_fail
+    cmp hallLevel3D,HALL_BACKROOMS
+    jne br_context_fail
+    lea esi,brMap3D
+    lea edi,brContextMap
+    mov ecx,1024
+    repe cmpsb
+    jne br_context_fail
+    inc index
+    cmp index,6
+    jb br_context_game
+    mov brActive3D,0
+    mov hallLevel3D,0
+    mov worldMap3D,OFFSET casinoMap
+    xor eax,eax
+    ret
+br_context_fail:
+    mov eax,103
+    ret
+RunBackroomsContextTest3D ENDP
+
+RunBackroomsWallTest3D PROC uses esi
+    mov brActive3D,0
+    mov engineMode,MODE_WALK
+    mov mouseLocked3D,0
+    mov playerX,16*FP_1+FP_HALF
+    mov playerY,27*FP_1+FP_HALF
+    mov playerAngle,128
+    mov deltaTime3D,16
+    mov brEntryHold3D,0
+    call ClearKeys3D
+    mov keys3D[57h],1
+    mov esi,500
+br_wall_walk:
+    call HandlePlayerInput
+    call BackroomsEntry3D
+    cmp brActive3D,1
+    je br_wall_entered
+    dec esi
+    jnz br_wall_walk
+    mov eax,104
+    ret
+br_wall_entered:
+    cmp playerY,30*FP_1
+    jae br_wall_fail
+    cmp playerY,30*FP_1-15000
+    jb br_wall_fail
+    call ClearKeys3D
+    xor eax,eax
+    ret
+br_wall_fail:
+    mov eax,105
+    ret
+RunBackroomsWallTest3D ENDP

tools/tests/backrooms_test.inc

@@ -0,0 +1,288 @@
+.data
+brTestPath db 'build\scratch\backrooms-native.bin',0
+brTestFrame db 'build\scratch\backrooms-frame.bin',0
+brTestExitFrame db 'build\scratch\backrooms-exit.bin',0
+brTestIo dd 0
+brTestSeeds dd 256
+brTestStage dd 91
+brTestRows dd 0
+brTestLuckPath db 'build\scratch\backrooms-luck.bin',0
+brTestProfileDir db 'build\scratch',0
+brTestProfileName db 'backrooms-profile.dat',0
+brTestProfilePath db 'build\scratch\backrooms-profile.dat',0
+brTestPreviewPath db 'build\scratch\br-preview.dat',0
+brTestFacesPath db 'build\scratch\backrooms-exit-faces.bin',0
+brTestFaceNeighbors dd -32,32,-1,1
+brTestFaceAngles dd 384,128,256,0
+.code
+include tools/tests/backrooms_extended_test.inc
+RunBackroomsTest3D PROC uses ebx esi edi
+    invoke CreateFileA,OFFSET brTestPath,40000000h,0,0,2,80h,0
+    mov ebx,eax
+    cmp eax,-1
+    je br_test_fail
+    mov rngSeed3D,12345
+br_test_seed:
+    call GenerateBackrooms3D
+    invoke WriteFile,ebx,OFFSET brMap3D,1024,OFFSET brTestIo,0
+    invoke WriteFile,ebx,OFFSET brExitCell3D,4,OFFSET brTestIo,0
+    invoke WriteFile,ebx,OFFSET brGameCells3D,24,OFFSET brTestIo,0
+    dec brTestSeeds
+    jnz br_test_seed
+    invoke CloseHandle,ebx
+    mov brTestStage,92
+    mov obsActive3D,0
+    mov tournamentMode,0
+    mov brActive3D,0
+    mov engineMode,MODE_WALK
+    mov hallLevel3D,0
+    mov playerX,16*FP_1+FP_HALF
+    mov playerY,30*FP_1-11000
+    mov playerAngle,128
+    mov keys3D[57h],1
+    mov deltaTime3D,50
+    mov esi,39
+br_test_entry:
+    call BackroomsEntry3D
+    cmp brActive3D,0
+    jne br_test_fail
+    dec esi
+    jnz br_test_entry
+    cmp brEntryHold3D,1950
+    jne br_test_fail
+    mov brTestStage,93
+    mov playerAngle,129
+    call BackroomsEntry3D
+    cmp brEntryHold3D,0
+    jne br_test_fail
+    mov playerAngle,128
+    call BackroomsEntry3D
+    cmp brEntryHold3D,50
+    jne br_test_fail
+    mov keys3D[57h],0
+    call BackroomsEntry3D
+    cmp brEntryHold3D,0
+    jne br_test_fail
+    mov brTestStage,94
+    mov keys3D[57h],1
+    mov brEntryHold3D,1950
+    mov brEntryAngle3D,128
+    call BackroomsEntry3D
+    cmp brActive3D,1
+    jne br_test_fail
+    cmp brCutscene3D,1
+    jne br_test_fail
+    mov brClock3D,900
+    call HandleBackrooms3D
+    mov brTestStage,95
+    invoke CanWalk3D,FP_1+FP_HALF,FP_1+FP_HALF
+    cmp eax,1
+    jne br_test_fail
+    invoke CanWalk3D,FP_HALF,FP_HALF
+    test eax,eax
+    jnz br_test_fail
+    mov brTestStage,96
+    ; Set up standard projection LUT through the real hall initializer first.
+    call InitHall3D
+    call RunBackroomsWallTest3D
+    test eax,eax
+    jnz br_test_return
+    mov brActive3D,1
+    mov hallLevel3D,HALL_BACKROOMS
+    mov worldMap3D,OFFSET brMap3D
+    mov floorTexture3D,BR_FLOOR
+    mov viewHorizon3D,HALF_H
+    mov brClock3D,8100
+    mov brDialogue3D,2500
+    mov brCutscene3D,0
+    mov playerX,FP_1+FP_HALF
+    mov playerY,FP_1+FP_HALF
+    mov playerAngle,64
+    call RenderBackrooms3D
+    invoke CreateFileA,OFFSET brTestFrame,40000000h,0,0,2,80h,0
+    mov ebx,eax
+    invoke WriteFile,ebx,OFFSET screenBuffer,SCREEN_SIZE*4,OFFSET brTestIo,0
+    invoke CloseHandle,ebx
+    ; Door capture from its reachable exit cell, facing a neighboring wall.
+    mov ebx,brExitCell3D
+    mov eax,ebx
+    and eax,31
+    shl eax,16
+    add eax,FP_HALF
+    mov playerX,eax
+    mov eax,ebx
+    shr eax,5
+    shl eax,16
+    add eax,FP_HALF
+    mov playerY,eax
+    mov playerAngle,384
+    cmp brMap3D[ebx-32],0
+    jne br_test_exit_camera
+    mov playerAngle,128
+    cmp brMap3D[ebx+32],0
+    jne br_test_exit_camera
+    mov playerAngle,256
+    cmp brMap3D[ebx-1],0
+    jne br_test_exit_camera
+    mov playerAngle,0
+br_test_exit_camera:
+    mov brDialogue3D,10000
+    call RenderBackrooms3D
+    invoke CreateFileA,OFFSET brTestExitFrame,40000000h,0,0,2,80h,0
+    mov ebx,eax
+    invoke WriteFile,ebx,OFFSET screenBuffer,SCREEN_SIZE*4,OFFSET brTestIo,0
+    invoke CloseHandle,ebx
+    mov arrivalConfirmed3D,0
+    call RunBackroomsDoorFrames3D
+    invoke LeaveBackrooms3D,1
+    cmp brOwned3D,1
+    jne br_test_fail
+    cmp brActive3D,0
+    jne br_test_fail
+    cmp hallLevel3D,0
+    jne br_test_fail
+    mov brTestStage,97
+    call RunBackroomsContextTest3D
+    test eax,eax
+    jnz br_test_return
+    mov brActive3D,1
+    call BackroomsLuck3D
+    cmp eax,-1
+    jne br_test_fail
+    mov brActive3D,0
+    mov tournamentMode,1
+    call BackroomsLuck3D
+    cmp eax,-1
+    jne br_test_fail
+    mov tournamentMode,0
+    xor edi,edi
+    mov esi,100000
+br_test_luck:
+    call BackroomsLuck3D
+    add edi,eax
+    dec esi
+    jnz br_test_luck
+    cmp edi,89000
+    jb br_test_fail
+    cmp edi,91000
+    ja br_test_fail
+    call RunBackroomsExtendedTest3D
+    test eax,eax
+    jnz br_test_return
+    mov brTestStage,98
+    call LoadNativeCoinArt3D
+    call InitNativeSlots3D
+    call InitNativeClover3D
+    call InitNativeBlackjack3D
+    call InitNativePoker3D
+    invoke CreateFileA,OFFSET brTestLuckPath,40000000h,0,0,2,80h,0
+    mov ebx,eax
+    mov brTestRows,1000
+br_test_rounds:
+    mov bankroll,1000000
+    mov coin3d_choice,1
+    mov coin3d_state,COIN_IDLE
+    mov pressedKeys3D[20h],1
+    call HandleNativeCoin3D
+    invoke WriteFile,ebx,OFFSET coin3d_result,4,OFFSET brTestIo,0
+    mov dice3d_state,0
+    mov dice3d_choice,1
+    mov pressedKeys3D[20h],1
+    call HandleDiceRules3D
+    invoke WriteFile,ebx,OFFSET dice3d_val1,8,OFFSET brTestIo,0
+    mov slotSpinState,SLOT_READY
+    call StartNativeSlots3D
+    invoke WriteFile,ebx,OFFSET slotReel1,12,OFFSET brTestIo,0
+    mov clpState3D,SLOT_READY
+    call StartNativeClover3D
+    call CloverEvaluate3D
+    invoke WriteFile,ebx,OFFSET clpTotal3D,4,OFFSET brTestIo,0
+    mov cbBotCount3D,0
+    mov cbState3D,CB_IDLE
+    call StartNativeBlackjack3D
+    invoke WriteFile,ebx,OFFSET cbPlayerScore3D,4,OFFSET brTestIo,0
+    invoke WriteFile,ebx,OFFSET cbDeck3D,208,OFFSET brTestIo,0
+    mov pkState3D,PK_IDLE
+    call StartNativePoker3D
+    invoke WriteFile,ebx,OFFSET pkDeck3D,208,OFFSET brTestIo,0
+    invoke WriteFile,ebx,OFFSET pkButton3D,4,OFFSET brTestIo,0
+    dec brTestRows
+    jnz br_test_rounds
+    invoke CloseHandle,ebx
+    mov brTestStage,99
+    mov nativeProfilesDirPtr3D,OFFSET brTestProfileDir
+    invoke CopyCString,OFFSET saveFileName,OFFSET brTestProfileName
+    mov nativeProfileActive3D,1
+    mov brOwned3D,1
+    mov brEnabled3D,0
+    call SaveGame
+    mov brOwned3D,0
+    mov brEnabled3D,1
+    call LoadSave
+    cmp brOwned3D,1
+    jne br_test_fail
+    cmp brEnabled3D,0
+    jne br_test_fail
+    invoke ValidateGraphicProfile3D,OFFSET brTestProfilePath
+    cmp eax,1
+    jne br_test_fail
+    call RunBackroomsSaveTest3D
+    test eax,eax
+    jnz br_test_return
+    xor eax,eax
+    ret
+br_test_fail:
+    mov eax,brTestStage
+br_test_return:
+    ret
+RunBackroomsTest3D ENDP
+
+; Identical door/camera distance on every face, VHS off/on pairs.
+RunBackroomsDoorFrames3D PROC uses ebx esi edi
+    local face:DWORD,effect:DWORD
+    invoke CreateFileA,OFFSET brTestFacesPath,40000000h,0,0,2,80h,0
+    mov ebx,eax
+    mov face,0
+br_test_door_face:
+    lea edi,brMap3D
+    xor eax,eax
+    mov ecx,256
+    rep stosd
+    ; Keep all rays inside the fixture map, including peripheral FOV rays.
+    xor esi,esi
+br_test_door_border:
+    mov brMap3D[esi],BR_WALL
+    mov brMap3D[esi+31*32],BR_WALL
+    mov eax,esi
+    shl eax,5
+    mov brMap3D[eax],BR_WALL
+    mov brMap3D[eax+31],BR_WALL
+    inc esi
+    cmp esi,32
+    jb br_test_door_border
+    mov brExitCell3D,16*32+16
+    mov esi,face
+    mov eax,brTestFaceNeighbors[esi*4]
+    mov brMap3D[eax+16*32+16],BR_WALL
+    mov playerX,16*FP_1+FP_HALF
+    mov playerY,16*FP_1+FP_HALF
+    mov eax,brTestFaceAngles[esi*4]
+    mov playerAngle,eax
+    mov viewEye3D,HALL_STANDING_EYE
+    mov viewHorizon3D,HALF_H
+    mov brDialogue3D,10000
+    mov effect,0
+br_test_door_effect:
+    mov eax,effect
+    mov brVhs3D,eax
+    call RenderBackrooms3D
+    invoke WriteFile,ebx,OFFSET screenBuffer,SCREEN_SIZE*4,OFFSET brTestIo,0
+    inc effect
+    cmp effect,2
+    jb br_test_door_effect
+    inc face
+    cmp face,4
+    jb br_test_door_face
+    invoke CloseHandle,ebx
+    ret
+RunBackroomsDoorFrames3D ENDP

tools/tests/check_backrooms.py

@@ -0,0 +1,128 @@
+"""Execute shipping MASM maze/entry/collision/render, inspect native output."""
+from collections import deque
+from pathlib import Path
+import struct
+import subprocess
+from PIL import Image
+from check_artifacts import toolchain
+
+ROOT = Path(__file__).resolve().parents[2]
+OUT = ROOT / 'build/scratch'
+
+
+def check_exit_faces():
+    raw = (OUT/'backrooms-exit-faces.bin').read_bytes()
+    assert len(raw) == 8*640*480*4
+    frames = [Image.frombytes('RGBA', (640, 480), raw[i:i+640*480*4],
+                              'raw', 'BGRA').convert('RGB')
+              for i in range(0, len(raw), 640*480*4)]
+    # Source glyph at runtime's exact nearest-neighbor UV scale. Compare both
+    # orientations rather than merely counting green pixels (mirrors pass that).
+    pack = (ROOT/'assets/sprites/backrooms/materials.bin').read_bytes()
+    art = Image.frombytes('RGBA', (128, 128), pack[20+4*65536:], 'raw', 'BGRA')
+    glyph = [(x, y) for y in range(48, 70) for x in range(27, 101)
+             if min(art.getpixel((x, y))[:3]) > 240]
+    for face, name in enumerate(('north', 'south', 'west', 'east')):
+        clean, vhs = frames[2*face:2*face+2]
+        clean.save(OUT/f'backrooms-exit-{name}.png')
+        vhs.save(OUT/f'backrooms-exit-{name}-vhs.png')
+        white = [(x, y) for y in range(0, 300) for x in range(60, 580)
+                 if min(clean.getpixel((x, y))) > 240]
+        assert white, f'{name}: EXIT missing'
+        x0, x1 = min(x for x, y in white), max(x for x, y in white)
+        y0, y1 = min(y for x, y in white), max(y for x, y in white)
+        gx0, gx1 = min(x for x, y in glyph), max(x for x, y in glyph)
+        gy0, gy1 = min(y for x, y in glyph), max(y for x, y in glyph)
+        def score(mirror):
+            hits = 0
+            for x, y in glyph:
+                u = (x-gx0)/(gx1-gx0)
+                if mirror:
+                    u = 1-u
+                px = round(x0+u*(x1-x0))
+                py = round(y0+(y-gy0)/(gy1-gy0)*(y1-y0))
+                hits += min(clean.getpixel((px, py))) > 240
+            return hits/len(glyph)
+        normal, mirrored = score(False), score(True)
+        assert normal > .85 and normal > mirrored+.12, (name, normal, mirrored)
+        # White glyphs may darken on scanlines, never wrap into black/color noise.
+        corrupt = sum(min(vhs.getpixel(p)) < 180 or
+                      max(vhs.getpixel(p))-min(vhs.getpixel(p)) > 12 for p in white)
+        assert corrupt == 0, (name, 'VHS corrupt white pixels', corrupt, len(white))
+
+
+def main():
+    OUT.mkdir(parents=True, exist_ok=True)
+    ml, link = toolchain()
+    sdk = Path('C:/Program Files (x86)/Windows Kits/10/Lib')
+    lib = next(p/'um/x86' for p in sorted(sdk.iterdir(), reverse=True)
+               if (p/'um/x86/kernel32.lib').exists())
+    for args in ([ml, '/c', '/coff', '/Cp', '/nologo', '/I.', '/DBACKROOMS_TEST=1',
+                  '/Fobuild/scratch/backrooms.obj', 'poker.asm'],
+                 [link, '/nologo', '/SUBSYSTEM:CONSOLE', '/LIBPATH:'+str(lib),
+                  '/OUT:build/scratch/backrooms-test.exe', 'build/scratch/backrooms.obj',
+                  'kernel32.lib', 'winmm.lib', 'user32.lib', 'ws2_32.lib', 'gdi32.lib']):
+        subprocess.run(list(map(str, args)), cwd=ROOT, check=True, timeout=120)
+    subprocess.run([str(OUT/'backrooms-test.exe')], cwd=ROOT, check=True, timeout=90)
+    raw = (OUT/'backrooms-native.bin').read_bytes()
+    assert len(raw) == 256 * 1052
+    fingerprints = set()
+    minimum = 10000
+    for offset in range(0, len(raw), 1052):
+        grid = raw[offset:offset+1024]
+        exit_cell, *games = struct.unpack_from('<7I', raw, offset+1024)
+        assert all(grid[x] for x in range(32))
+        assert all(grid[31*32+x] for x in range(32))
+        assert all(grid[y*32] and grid[y*32+31] for y in range(32))
+        distance, queue = {33: 0}, deque([33])
+        while queue:
+            cell = queue.popleft()
+            for neighbor in (cell-32, cell+1, cell+32, cell-1):
+                if grid[neighbor] == 0 and neighbor not in distance:
+                    distance[neighbor] = distance[cell]+1
+                    queue.append(neighbor)
+        assert len(distance) == grid.count(0), 'Disconnected open component'
+        assert distance[exit_cell] == max(distance.values())
+        assert len(set(games)) == 6 and exit_cell not in games and 33 not in games
+        assert all(cell in distance for cell in games)
+        minimum = min(minimum, distance[exit_cell])
+        fingerprints.add(grid)
+    assert len(fingerprints) == 256
+    assert minimum >= 40, minimum
+    luck = (OUT/'backrooms-luck.bin').read_bytes()
+    assert len(luck) == 1000*452
+    wins = dict.fromkeys(('coin', 'dice', '777', 'clover', 'blackjack', 'poker'), 0)
+    for row in struct.iter_unpack('<113I', luck):
+        coin, d1, d2, s1, s2, s3, clover, bj = row[:8]
+        assert coin in (1, 2) and 1 <= d1 <= 6 and 1 <= d2 <= 6
+        wins['coin'] += coin == 1
+        wins['dice'] += (d1+d2) % 2 == 0
+        assert (s1, s2, s3) in ((1, 1, 1), (2, 5, 3))
+        wins['777'] += s1 == s2 == s3
+        assert clover in (0, 78)
+        wins['clover'] += clover > 0
+        deck, poker, button = row[8:60], row[60:112], row[112]
+        assert sorted(deck) == sorted(poker) == list(range(52)), 'Duplicate/missing card'
+        assert bj in (19, 21)
+        assert bj == (21 if deck[0] == 12 else 19)
+        wins['blackjack'] += bj == 21
+        # Actual non-button-first deal order, plus actual burn/flop/turn/river offsets.
+        seat = button ^ 1
+        hand = [poker[seat], poker[seat+2], *(poker[i] for i in (5, 6, 7, 9, 11))]
+        wins['poker'] += set(range(8, 13)).issubset(hand)
+    assert all(860 <= n <= 940 for n in wins.values()), wins
+    image = Image.frombytes('RGBA', (640, 480), (OUT/'backrooms-frame.bin').read_bytes(), 'raw', 'BGRA').convert('RGB')
+    image.save(OUT/'backrooms-frame.png')
+    assert len(image.getcolors(640*480)) > 100
+    image = Image.frombytes('RGBA', (640, 480), (OUT/'backrooms-exit.bin').read_bytes(), 'raw', 'BGRA').convert('RGB')
+    image.save(OUT/'backrooms-exit.png')
+    assert sum(g > 1.4*r and g > 1.2*b for r, g, b in image.get_flattened_data()) > 100, 'Exit not visibly green'
+    check_exit_faces()
+    print('PASS: readable non-mirrored EXIT on all four wall faces; VHS preserves white glyphs')
+    print(f'PASS: 256 native seeds; sealed connected mazes; farthest exit >= {minimum} steps; unique reachable games; entry hold/reset; collision; isolation; profile roundtrip; render')
+    print(f'PASS: 1000 production rounds per game, valid unique decks, wins: {wins}')
+    print('PASS: all blackjack party sizes; 7 scratch designs; roulette; Durak conservation/trump; 9 Russian party/bullet setups; Buckshot counts; preview saves; repeat reward')
+
+
+if __name__ == '__main__':
+    main()