; ParticlePreset Example
; ----------------------
; Requires Extended mode.

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

camera=CreateCamera()
PositionEntity camera,0,2,-6
CameraClsColor camera,8,12,24

floor=CreatePlane()
EntityColor floor,30,34,44

; Preset names for the overlay
Dim preset_name$(6)
preset_name$(1)="1 fire"
preset_name$(2)="2 smoke"
preset_name$(3)="3 rain"
preset_name$(4)="4 sparks"
preset_name$(5)="5 magic"
preset_name$(6)="6 dust"

; One emitter is enough - a preset configures the whole effect
emitter=CreateParticleEmitter(1200)
PositionEntity emitter,0,0.25,0
preset=1
ParticlePreset emitter,1

While Not KeyDown(1)

    ; Keys 1-6 apply a complete ready-made effect
    For choice=1 To 6
        If KeyHit(1+choice)
            preset=choice
            ParticlePreset emitter,preset
            ; Rain works best falling from above; the rest sit near the ground
            If preset=3 Then PositionEntity emitter,0,5,0 Else PositionEntity emitter,0,0.25,0
            If preset=4 Then EmitParticles emitter,160
        EndIf
    Next
    If KeyHit(57) Then EmitParticles emitter,120

    ; 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

    ; UpdateWorld also advances the particle simulation
    UpdateWorld
    RenderWorld

    Text 0,0,"Arrow keys: move camera   1-6: preset   Space: burst   Esc: exit"
    Text 0,20,"ParticlePreset emitter,"+preset+" ("+preset_name$(preset)+")"
    Text 0,40,"Live particles: "+CountParticles(emitter)

    Flip

Wend

End