; ------------------------------------------------------------
;
;   PureBasic - CameraProjectionX/Y
;
;    (c) Fantaisie Software
;
; ------------------------------------------------------------
;

#CameraSpeed = 1



Define.f KeyX, KeyY, MouseX, MouseY

InitEngine3D()

InitSprite()
InitKeyboard()
InitMouse()

ExamineDesktops():dx=DesktopWidth(0)*0.8:dy=DesktopHeight(0)*0.8
OpenWindow(0, 0,0, DesktopUnscaledX(dx),DesktopUnscaledY(dy), " CameraProjectionX/Y - [Esc] quit",#PB_Window_ScreenCentered)
OpenWindowedScreen(WindowID(0), 0, 0, dx, dy, 0, 0, 0)

Add3DArchive(#PB_Compiler_Home + "examples/3d/Data/Textures", #PB_3DArchive_FileSystem)

LoadTexture(0, "flare.png")

CreateMaterial(0, TextureID(0))
DisableMaterialLighting(0, 1)
MaterialBlendingMode   (0, #PB_Material_Add)


CreateParticleEmitter(0, 10, 1, 1, 0)
ParticleMaterial    (0, MaterialID(0))
ParticleTimeToLive  (0, 0, 3)
ParticleEmissionRate(0, 80)
ParticleVelocity    (0,#PB_Particle_Velocity,100)
ParticleSize        (0, 8, 8)
ParticleColorRange  (0, RGB(255, 0, 0), RGB(0, 0, 0))

MoveParticleEmitter(0, -50, 0, 0)
ParticleEmitterDirection(0, 0, -1, 0)


CreateCamera(0, 0, 0, 100, 100)
MoveCamera(0, 0, 0, 200, #PB_Absolute)

LoadSprite(0, #PB_Compiler_Home + "examples/3d/Data/Textures/Geebee2.bmp")
TransparentSpriteColor(0, RGB(255, 0, 255))

Repeat
  While WindowEvent():Wend
  
  If ExamineMouse()
    MouseX = MouseDeltaX() * #CameraSpeed * 0.05
    MouseY = MouseDeltaY() * #CameraSpeed * 0.05
  EndIf
  
  If ExamineKeyboard()    
    KeyX = (KeyboardPushed(#PB_Key_Right)-KeyboardPushed(#PB_Key_Left))*#CameraSpeed
    Keyy = (KeyboardPushed(#PB_Key_Down)-KeyboardPushed(#PB_Key_Up))*#CameraSpeed    
  EndIf
  
  RotateCamera(0, MouseY, MouseX, RollZ, #PB_Relative)
  MoveCamera  (0, KeyX, 0, KeyY)
  
  RenderWorld()
  
  x = CameraProjectionX(0, ParticleEmitterX(0), ParticleEmitterY(0), ParticleEmitterZ(0)) - SpriteWidth(0)/2
  y = CameraProjectionY(0, ParticleEmitterX(0), ParticleEmitterY(0), ParticleEmitterZ(0)) - SpriteHeight(0)/2
  DisplayTransparentSprite(0, x, y)
  
  
  FlipBuffers()
Until KeyboardPushed(#PB_Key_Escape) Or Quit = 1