; CreateDecal Example
; -------------------
; Requires Extended mode.

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

camera=CreateCamera()
PositionEntity camera,0,0,-6

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

; A wall to shoot paint splats at
wall=CreateCube()
ScaleEntity wall,4,2.5,0.2
PositionEntity wall,0,0,3
EntityColor wall,110,120,135

; Paint an orange splat texture in memory
splat=CreateTexture(64,64,3)
SetBuffer TextureBuffer(splat)
ClsColor 0,0,0
Cls
Color 255,80,20
Oval 6,6,52,52,True
SetBuffer BackBuffer()
Color 255,255,255

; The aiming reticle sweeps across the wall on its own
sight=CreateSphere()
ScaleEntity sight,0.1,0.1,0.1
EntityColor sight,255,255,0

While Not KeyDown(1)

    ; Sweep the reticle over the wall face
    angle#=angle+2
    aim_x#=3*Sin(angle)
    aim_y#=1.5*Sin(angle*1.7)
    PositionEntity sight,aim_x,aim_y,2.6

    ; Space fires: CreateDecal makes a projector entity that stamps the wall
    If KeyHit(57) Then
        decal=CreateDecal(splat)
        PositionEntity decal,aim_x,aim_y,2.8
        shots=shots+1
    EndIf

    ; Arrow keys move the camera
    If KeyDown(200) Then MoveEntity camera,0,0,0.1
    If KeyDown(208) Then MoveEntity camera,0,0,-0.1
    If KeyDown(203) Then TurnEntity camera,0,1,0
    If KeyDown(205) Then TurnEntity camera,0,-1,0

    RenderWorld

    Text 0,0,"Arrow keys: move camera   Space: fire paint splat   Esc: exit"
    Text 0,20,"CreateDecal(splat) called "+shots+" times - each decal is an ordinary entity"

    Flip

Wend

End