; Interactive fixture reuses the actual native scene, window events and presenter.
.code
DartsUiStart PROC
    call InitPaths3D
    call Create3DWindow
    test eax,eax
    jz dt_ui_fail
    invoke SetWindowLongA,h3DWnd,-4,OFFSET WindowEvents3D
    call ToggleFullscreen3D
    call BeginDarts3D
    call RenderDarts3D
    invoke ShowWindow,h3DWnd,1
    call Present3D
    invoke SetForegroundWindow,h3DWnd
    invoke GetTickCount
    mov previousTick3D,eax
dt_ui_loop:
    invoke PeekMessageA,OFFSET msg3D,0,0,0,1
    test eax,eax
    jz dt_ui_frame
    cmp dword ptr msg3D[4],12h
    je dt_ui_close
    invoke TranslateMessage,OFFSET msg3D
    invoke DispatchMessageA,OFFSET msg3D
    jmp dt_ui_loop
dt_ui_frame:
    invoke GetTickCount
    mov frameStart3D,eax
    sub eax,previousTick3D
    cmp eax,50
    jbe @F
    mov eax,50
@@:
    mov deltaTime3D,eax
    mov eax,frameStart3D
    mov previousTick3D,eax
    invoke GetForegroundWindow
    cmp eax,h3DWnd
    jne dt_ui_idle
    invoke Pressed3D,1Bh
    test eax,eax
    jnz dt_ui_close
    invoke Pressed3D,7Ah
    test eax,eax
    jz @F
    call ToggleFullscreen3D
@@:
    call HandleDarts3D
    call RenderDarts3D
    call Present3D
dt_ui_idle:
    invoke Sleep,16
    jmp dt_ui_loop
dt_ui_close:
    call FreeDarts3D
    invoke ReleaseDC,h3DWnd,h3DDC
    invoke DestroyWindow,h3DWnd
dt_ui_exit:
    invoke ExitProcess,0
    ret
dt_ui_fail:
    invoke ExitProcess,8503
    ret
DartsUiStart ENDP