def setup_shadow_ray(self, shadow_node, mat):
ray = CollisionRay(0.0, 0.0, CollisionHandlerRayStart, 0.0, 0.0, -1.0)
ray_node = CollisionNode('ray_node')
ray_node.add_solid(ray)
self.ray_np = shadow_node.attach_new_node(ray_node)
self.ray_np.node().set_from_collide_mask(CIGlobals.FloorBitmask)
self.ray_np.node().set_into_collide_mask(BitMask32.allOff())
floor_offset = 0.025
lifter = CollisionHandlerFloor()
lifter.set_offset(floor_offset)
lifter.set_reach(4.0)
lifter.add_collider(self.ray_np, shadow_node)
if not mat:
base.cTrav.add_collider(self.ray_np, lifter)
