; WorldAssetError Example
; -----------------------
; Requires Extended mode.

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

camera=CreateCamera()
PositionEntity camera,0,1,-5
light=CreateLight()
RotateEntity light,45,45,0

; A warning-red cube marks the broken asset in our scene
cube=CreateCube()
PositionEntity cube,0,1,0
EntityColor cube,255,80,80

; Load the asset manifest world in the background
manifest=LoadWorldAsync("../../../samples/worlds/asset-preload.world")
While Not WorldReady(manifest)
    If WorldLoadState(manifest)=WORLD_LOAD_FAILED Then RuntimeError WorldLoadError(manifest)
    Cls
    Text 0,0,"Loading the asset manifest..."
    Flip
Wend

; 'broken-sound' deliberately points at an image file, so its
; background preparation is doomed to fail; 'ready-sound' is fine.
; Resolving a manual asset starts its preparation
broken_asset=FindWorldAsset(manifest,"broken-sound")
good_asset=FindWorldAsset(manifest,"ready-sound")

While Not KeyDown(1)

    ; An empty string means no error has occurred (yet)
    broken_error$=WorldAssetError(broken_asset)
    good_error$=WorldAssetError(good_asset)

    TurnEntity cube,0,1,0

    ; 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   Esc: exit"
    Text 0,20,"WorldAssetError$(good_asset) = '"+good_error+"'"
    Text 0,40,"WorldAssetError$(broken_asset) = '"+broken_error+"'"

    Flip

Wend

FreeWorld manifest
End