Creates a weld joint between two sprites. The weld joint attempts to limit all relative movement and rotation between the two sprites. Specify a single anchor point in world coordinates with the sprites already in the desired positions. The joint is not a perfect fixture and given a large enough force the sprites may shift out of position.
The anchor point can be offset from the sprite center positions.
A joint ID will be returned to reference this joint later, a joint may be deleted by the system if any of the sprites it connects are deleted.
integer CreateWeldJoint( iSpriteIndex1, iSpriteIndex2, x, y, colConnected )
CreateWeldJoint( iJointIndex, iSpriteIndex1, iSpriteIndex2, x, y, colConnected )