; Exterior props use the same camera and wall depth as the raycaster.
PrepareCityStreetCrops3D PROC uses ebx esi edi
    local frame:DWORD,minX:DWORD,minY:DWORD,maxX:DWORD,maxY:DWORD,x:DWORD,y:DWORD
    cmp hallStreetLife3D.pixels, 0
    je city_crops_done
    cmp hallStreetLife3D.frames, 40
    jne city_crops_done
    cmp hallStreetLife3D.imageWidth, 192
    jne city_crops_done
    cmp hallStreetLife3D.height, 320
    jne city_crops_done
    mov frame, 32
city_crop_frame:
    mov minX, 192
    mov minY, 320
    mov maxX, 0
    mov maxY, 0
    mov eax, frame
    imul eax, 192*320*4
    add eax, hallStreetLife3D.pixels
    mov edi, eax
    mov y, 0
city_crop_row:
    mov x, 0
city_crop_pixel:
    cmp BYTE PTR [edi+3], 128
    jb city_crop_next
    mov eax, x
    cmp eax, minX
    jae @F
    mov minX, eax
@@:
    inc eax
    cmp eax, maxX
    jbe @F
    mov maxX, eax
@@:
    mov eax, y
    cmp eax, minY
    jae @F
    mov minY, eax
@@:
    inc eax
    cmp eax, maxY
    jbe city_crop_next
    mov maxY, eax
city_crop_next:
    add edi, 4
    inc x
    cmp x, 192
    jb city_crop_pixel
    inc y
    cmp y, 320
    jb city_crop_row
    mov eax, frame
    sub eax, 32
    imul esi, eax, SIZEOF CitySpriteCrop3D
    mov eax, maxX
    sub eax, minX
    jle city_crop_advance
    mov cityStreetCrops3D[esi].pixelW, eax
    mov eax, maxY
    sub eax, minY
    mov cityStreetCrops3D[esi].pixelH, eax
    mov eax, minX
    mov cityStreetCrops3D[esi].pixelX, eax
    mov eax, minY
    mov cityStreetCrops3D[esi].pixelY, eax
city_crop_advance:
    inc frame
    cmp frame, 40
    jb city_crop_frame
city_crops_done:
    ret
PrepareCityStreetCrops3D ENDP

ProjectCityPoint3D PROC uses ebx esi wx:DWORD,wy:DWORD
    local relX:DWORD,relY:DWORD,depth:DWORD
    mov eax, wx
    sub eax, playerX
    mov relX, eax
    mov eax, wy
    sub eax, playerY
    mov relY, eax
    mov eax, relX
    imul playerDirX
    shrd eax, edx, 16
    mov ebx, eax
    mov eax, relY
    imul playerDirY
    shrd eax, edx, 16
    add eax, ebx
    mov depth, eax
    cmp eax, 4096
    jle city_project_behind
    mov eax, relY
    imul playerDirX
    shrd eax, edx, 16
    mov ebx, eax
    mov eax, relX
    imul playerDirY
    shrd eax, edx, 16
    sub ebx, eax
    mov eax, ebx
    mov ecx, HALF_W*100
    imul ecx
    mov ecx, depth
    imul ecx, 66
    idiv ecx
    add eax, HALF_W
    mov edx, depth
    ret
city_project_behind:
    xor eax, eax
    mov edx, depth
    ret
ProjectCityPoint3D ENDP

DrawCityObject3D PROC uses ebx esi edi object:DWORD,firstSourceRow:DWORD
    local depth:DWORD,left:DWORD,top:DWORD,widthPx:DWORD,heightPx:DWORD
    local xRight:DWORD,yEnd:DWORD,xStart:DWORD,yStart:DWORD
    local xStep:DWORD,yStep:DWORD,texColumn:DWORD,source:DWORD,row:DWORD,asset:DWORD
    local sourceWidth:DWORD,sourceHeight:DWORD,sourcePitch:DWORD,cropX:DWORD,cropY:DWORD
IFDEF CASINO_ACTION_TEST
    local ownerIndex:DWORD
    mov ownerIndex, -1
    mov eax, object
    cmp eax, OFFSET cityObjects3D
    jb @F
    cmp eax, OFFSET cityObjectsEnd3D
    jae @F
    sub eax, OFFSET cityObjects3D
    xor edx, edx
    mov ecx, SIZEOF CityProp3D
    div ecx
    mov ownerIndex, eax
@@:
ENDIF
    mov esi, object
    mov ebx, [esi].CityProp3D.asset
    mov asset, ebx
    mov eax, [ebx].AnimPack3D.imageWidth
    mov sourceWidth, eax
    shl eax, 2
    mov sourcePitch, eax
    mov eax, [ebx].AnimPack3D.height
    mov sourceHeight, eax
    mov cropX, 0
    mov cropY, 0
    cmp [ebx].AnimPack3D.pixels, 0
    je city_object_done
    mov eax, [esi].CityProp3D.frame
    cmp eax, [ebx].AnimPack3D.frames
    jae city_object_done
    cmp asset, OFFSET hallStreetLife3D
    jne city_object_project
    cmp eax, 32
    jb city_object_project
    cmp eax, 40
    jae city_object_project
    sub eax, 32
    imul ebx, eax, SIZEOF CitySpriteCrop3D
    mov eax, cityStreetCrops3D[ebx].pixelW
    test eax, eax
    jz city_object_project
    mov sourceWidth, eax
    mov eax, cityStreetCrops3D[ebx].pixelH
    mov sourceHeight, eax
    mov eax, cityStreetCrops3D[ebx].pixelX
    mov cropX, eax
    mov eax, cityStreetCrops3D[ebx].pixelY
    mov cropY, eax
city_object_project:
    invoke ProjectCityPoint3D, [esi].CityProp3D.posX, [esi].CityProp3D.posY
    cmp edx, 4096
    jle city_object_done
    mov depth, edx
    mov ebx, eax
    mov eax, SCREEN_H
    imul [esi].CityProp3D.worldW
    idiv depth
    test eax, eax
    jle city_object_done
    cmp eax, 4096
    ja city_object_done
    mov widthPx, eax
    shr eax, 1
    sub ebx, eax
    mov left, ebx
    mov eax, SCREEN_H
    imul [esi].CityProp3D.worldH
    idiv depth
    test eax, eax
    jle city_object_done
    cmp eax, 4096
    ja city_object_done
    mov heightPx, eax
    mov eax, viewEye3D
    sub eax, [esi].CityProp3D.groundZ
    imul eax, SCREEN_H
    cdq
    idiv depth
    add eax, viewHorizon3D
    sub eax, heightPx
    mov top, eax
    cmp asset, OFFSET cityPropsPack3D
    jne @F
    cmp [esi].CityProp3D.frame, 0
    jne @F
    mov eax, widthPx
    shr eax, 1
    add eax, left
    mov cityMouthX3D, eax
    mov eax, heightPx
    imul eax, 110
    shr eax, 8
    add eax, top
    mov cityMouthY3D, eax
@@:
    mov eax, left
    mov xStart, eax
    add eax, widthPx
    cmp eax, SCREEN_W
    jle @F
    mov eax, SCREEN_W
@@:
    mov xRight, eax
    cmp xStart, 0
    jge @F
    mov xStart, 0
@@:
    mov eax, top
    mov yStart, eax
    add eax, heightPx
    cmp eax, SCREEN_H
    jle @F
    mov eax, SCREEN_H
@@:
    mov yEnd, eax
    cmp yStart, 0
    jge @F
    mov yStart, 0
@@:
    mov eax, xStart
    cmp eax, xRight
    jge city_object_done
    mov eax, yStart
    cmp eax, yEnd
    jge city_object_done
    mov eax, sourceWidth
    shl eax, 16
    xor edx, edx
    div widthPx
    mov xStep, eax
    mov eax, sourceHeight
    shl eax, 16
    xor edx, edx
    div heightPx
    mov yStep, eax
    mov ebx, asset
    mov eax, [esi].CityProp3D.frame
    imul eax, [ebx].AnimPack3D.imageWidth
    imul eax, [ebx].AnimPack3D.height
    shl eax, 2
    add eax, [ebx].AnimPack3D.pixels
    mov edx, cropY
    imul edx, sourcePitch
    add eax, edx
    mov edx, cropX
    lea eax, [eax+edx*4]
    mov source, eax
    mov ebx, xStart
city_object_column:
    mov eax, depth
    cmp eax, zBuffer[ebx*4]
    jge city_object_next_column
    mov eax, ebx
    sub eax, left
    imul eax, xStep
    shr eax, 16
    mov texColumn, eax
    mov eax, yStart
    mov row, eax
    imul eax, SCREEN_W*4
    lea edi, screenBuffer[eax+ebx*4]
    mov ecx, yStart
    sub ecx, top
    imul ecx, yStep
city_object_row:
    mov eax, ecx
    shr eax, 16
    cmp eax, firstSourceRow
    jb city_object_next_row
    imul eax, sourcePitch
    mov edx, texColumn
    lea eax, [eax+edx*4]
    mov esi, source
    mov eax, [esi+eax]
    cmp asset, OFFSET hallLegacyPack3D
    jne @F
    and eax, 00FFFFFFh
    cmp eax, CHROMA_KEY
    je city_object_next_row
    jmp city_object_test_depth
@@:
    cmp eax, 80000000h
    jb city_object_next_row
city_object_test_depth:
    mov esi, edi
    sub esi, OFFSET screenBuffer
    mov eax, depth
    cmp eax, cityDepthBuffer3D[esi]
    jae city_object_next_row
    mov cityDepthBuffer3D[esi], eax
IFDEF CASINO_ACTION_TEST
    mov eax, ownerIndex
    mov cityPixelOwner3D[esi], eax
ENDIF
    mov esi, source
    mov eax, ecx
    shr eax, 16
    imul eax, sourcePitch
    mov edx, texColumn
    lea eax, [eax+edx*4]
    mov eax, [esi+eax]
    and eax, 00FFFFFFh
    mov [edi], eax
city_object_next_row:
    add ecx, yStep
    add edi, SCREEN_W*4
    inc row
    mov eax, row
    cmp eax, yEnd
    jb city_object_row
city_object_next_column:
    inc ebx
    cmp ebx, xRight
    jb city_object_column
city_object_done:
    ret
DrawCityObject3D ENDP

RenderCityObjects3D PROC uses ebx esi edi
IFDEF CASINO_ACTION_TEST
    lea edi, cityPixelOwner3D
    mov eax, -1
    mov ecx, SCREEN_SIZE
    rep stosd
    lea edi, cityVisiblePixels3D
    xor eax, eax
    mov ecx, CITY_PROP_COUNT
    rep stosd
ENDIF
    call AnimateCityCars3D
    call AnimateCityPedestrians3D
    call UpdateStreetGround3D
    xor esi, esi
city_objects_depth:
    imul ebx, esi, SIZEOF CityProp3D
    invoke ProjectCityPoint3D, cityObjects3D[ebx].posX, cityObjects3D[ebx].posY
    mov cityObjectDepth3D[esi*4], edx
    mov cityObjectOrder3D[esi*4], esi
    inc esi
    cmp esi, CITY_PROP_COUNT
    jb city_objects_depth
    xor esi, esi
city_objects_sort_outer:
    mov edi, esi
    inc edi
city_objects_sort_inner:
    mov eax, cityObjectOrder3D[esi*4]
    mov ebx, cityObjectDepth3D[eax*4]
    mov edx, cityObjectOrder3D[edi*4]
    cmp ebx, cityObjectDepth3D[edx*4]
    jge @F
    mov cityObjectOrder3D[esi*4], edx
    mov cityObjectOrder3D[edi*4], eax
@@:
    inc edi
    cmp edi, CITY_PROP_COUNT
    jb city_objects_sort_inner
    inc esi
    cmp esi, CITY_PROP_COUNT-1
    jb city_objects_sort_outer
    xor esi, esi
city_objects_draw:
    mov eax, cityObjectOrder3D[esi*4]
    cmp eax, 2
    jb city_objects_skip
    imul eax, SIZEOF CityProp3D
    add eax, OFFSET cityObjects3D
    invoke DrawCityObject3D, eax, 0
city_objects_skip:
    inc esi
    cmp esi, CITY_PROP_COUNT
    jb city_objects_draw
IFDEF CASINO_ACTION_TEST
    xor esi, esi
city_visible_count:
    mov eax, cityPixelOwner3D[esi*4]
    cmp eax, CITY_PROP_COUNT
    jae @F
    inc cityVisiblePixels3D[eax*4]
@@:
    inc esi
    cmp esi, SCREEN_SIZE
    jb city_visible_count
ENDIF
    ret
RenderCityObjects3D ENDP