basic collision help

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chrisnorris007

can someone tell me why this collision isnt working? its quite simple

<code>
Graphics3D 800, 600, 16, 2
SetBuffer(BackBuffer())

;heres how to do collisions::
Global done=False

; setup a camera
cam = CreateCamera()

Const C_hero=1
Const C_monster=2
Const C_Scene=3

Collisions C_hero,C_Scene,2,3
Collisions C_monster,C_Scene,2,3
Collisions C_hero,C_monster,1,2

EntityType cam,C_Hero
EntityRadius cam,3,6

;CameraRange cam, 0.05, 1000
PositionEntity cam, -3, 0.1, 3
; use WASD keys to move around
cube=CreateCube()
PositionEntity cube,0,0,0
te=LoadTexture("medieval\wall.jpg")
EntityTexture cube,te
EntityType cube,C_Scene

While Not done

If KeyHit(1) Then done = True
If KeyDown(17) Then MoveEntity cam, 0,0,0.005
If KeyDown(31) Then MoveEntity cam, 0,0,-0.005
If KeyDown(32) Then TurnEntity cam, 0,-1,0, True
If KeyDown(30) Then TurnEntity cam, 0,1,0, True
RenderWorld
Flip

Wend
</code>