B3D pipeline extension example

The B3d Extensions library still requires you to activate cameras using normal Blitz3d commands. A quick example:



;--------------------------------------------------------------------
; Demonstrates how to access camera extensions in b3d files
;--------------------------------------------------------------------

Include "B3dExtensions.bb"

file$ = Input("B3d File: ")

Graphics3D(640,480,32,2)

; Load file
model = LoadAnimMesh(file$)
If (Not model) RuntimeError("Invalid File")

; Initialize all B3d Extensions in hierarchy
extModel.EXT_Entity = EXT_InitEntity(model)

; This test app needs a camera
If (EXT_NumCameras(extModel)=0) Then RuntimeError("No Cameras in B3d File!")

; Activate first camera in hierarchy
extCamera.EXT_Camera = extModel\camera
EXT_UpdateCamera(extCamera)
camera = extCamera\camera
CameraProjMode(camera,1)

; Input Loop
While Not KeyHit(1)

; Hit C to cycle through cameras
If KeyHit(46)

; Deactivate current camera
CameraProjMode(camera,0)

; Next Camera
extCamera = extCamera\nextCamera

; No more cameras?
If (extCamera = Null)
; Loop back to first camera
extCamera = extModel\camera
EndIf

; Activate new camera
EXT_UpdateCamera(extCamera)
camera = extCamera\camera
CameraProjMode(camera,1)

EndIf

; Blitz Update
UpdateWorld()
RenderWorld()

Flip

Wend


Hope this helps...

-Pudding

The occluder code if very simple. If you look at the function EXT_UpdateOcclude() in Occlude.bb you'll see that it hides/shows an entity based on EntityVisible. You just have to call EXT_UpdateEntity() in your game loop.

For objects you want occluded by other objects add a B3d Render modifier and check "Occluded by Obscurer"

For objects you want to obscure other objects add a B3d Collisions modifier and set its "Pick Mode" and check "Obscurer"; depending on the pick mode, you will also need to edit the Collision Sphere/Box.

I'm hoping to include some sample Max scenes in the next release to better demostrate how the extensions can be used.

-Pudding