Can't AddVertex (BB3D Irrlicht)

2013-01-06T20:40:31Z

hello together,

my problem is i want create a triangle like you can see in the following code. But i get an error every time in the surface.bmx. What should i do????

SuperStrict
Import irrlicht.b3d

ib3d_Graphics3D(800, 600, 32, 0, True, True, EDT_DIRECT3D8)



Global cam:CAMERA = ib3d_CreateCamera()
ib3d_PositionEntity(cam, 0, 0, -10)

Global light1:LIGHT = ib3d_CreateLight()
ib3d_PositionEntity(light1, 0, 0, 0)
 'SMeshBuffer() 

Global cube:MESH = ib3d_CreateMesh()
Global surf:SURFACE = ib3d_CreateSurface(cube, SF_NORMAL)    
Global v1:Int = ib3d_AddVertex(surf, 0,0 , 0)
Global v2:Int = ib3d_AddVertex(surf, 1, -1, 0)
Global v3:Int = ib3d_AddVertex(surf, -1, -1, 0)
ib3d_AddTriangle(surf, v1, v2, v3)
ib3d_UpdateNormals(cube)

While Not ib3d_KeyDown(KEY_ESCAPE)


    ib3d_UpdateWorld
    ib3d_RenderWorld
WEnd

Surface.bmx
The error show that something in this wrong in this Method:

    ' TODO: dont think this is working right.  need to examine source of addTestSceneNode().
    Method addVertex:Int(x:Float,y:Float,z:Float,nx:Float=0,ny:Float=0,nz:Float=0,u:Float=0,v:Float=0)
        If Not _mbuf Or Not _mbuf.isValid() Then RuntimeError "Surface meshbuffer is invalid"
Rem
        Local vert:S3DVertex=S3DVertexDefault.createFromVals(x,y,z,nx,ny,nz,SColor.createFromVals(255,255,255,255),u,v)
        Local vert_array:S3DVertex[1] = vert
        'DebugLog("before: "+_mbuf.getVertices().size())
        _mbuf.getVertices().push_back(vert)
        'DebugLog("after: "+_mbuf.getVertices().size())
EndRem
        RuntimeError "Not Implemented"
        Return _mbuf.getVertexCount()-1
    EndMethod

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Can't AddVertex (BB3D Irrlicht)