v3f ra, rb, rx;
v3_copy( skaterift.cam.pos, ra );
v3_muladds( ra, skaterift.cam.transform[2], -10.0f, rb );
float t;
if( spherecast_world( world_current_instance(), ra, rb,
v3f ra, rb, rx;
v3_copy( skaterift.cam.pos, ra );
v3_muladds( ra, skaterift.cam.transform[2], -10.0f, rb );
float t;
if( spherecast_world( world_current_instance(), ra, rb,