; CameraZoom Example
; ------------------

Graphics3D 640,480,0,2
SetBuffer BackBuffer()

camera=CreateCamera()
PositionEntity camera,0,2,0

light=CreateLight()
RotateEntity light,45,45,0

; Textured ground plane gives a sense of distance
plane=CreatePlane()
ground_tex=LoadTexture("media/MossyGround.BMP")
ScaleTexture ground_tex,4,4
EntityTexture plane,ground_tex

; Two gate pillars close to the camera
pillar=CreateCylinder()
ScaleEntity pillar,0.5,3,0.5
PositionEntity pillar,-3,3,10
pillar=CreateCylinder()
ScaleEntity pillar,0.5,3,0.5
PositionEntity pillar,3,3,10

; A distant treasure chest on the horizon - zoom in to spot it
chest=CreateCube()
ScaleEntity chest,2,2,2
EntityColor chest,255,200,0
PositionEntity chest,0,2,200

zoom#=1

While Not KeyDown(1)

    ; Up / Down raise and lower the camera zoom factor
    If KeyDown(200) And zoom<100 Then zoom=zoom+0.1
    If KeyDown(208) And zoom>1 Then zoom=zoom-0.1

    ; Left / Right turn the camera
    If KeyDown(203) Then TurnEntity camera,0,1,0
    If KeyDown(205) Then TurnEntity camera,0,-1,0

    ; Apply the zoom factor to the camera
    CameraZoom camera,zoom

    TurnEntity chest,0,1,0

    RenderWorld

    Text 0,0,"Up / Down: zoom   Left / Right: turn   Esc: exit"
    Text 0,20,"A golden chest sits far ahead between the pillars - zoom in to see it"
    Text 0,40,"CameraZoom camera,"+zoom

    Flip

Wend

End