//call camera_path(""); to let the camera run along a path in the level
function camera_path(pathname)
{
// create a dummy path entity
	me = ent_create(NULL,nullvector,NULL);
	path_set(me,pathname);
	var dist = 0;
	var vLastPos[3];
	var vDir[3];
	while(1) 
	{
// place the camera on the path
		path_spline(me,camera.x,dist);
		dist += 5*time_step;
// let the camera look ahead	
		vec_diff(vDir,camera.x,vLastPos);
		vec_to_angle(camera.pan,vDir);
		vec_set(vLastPos,camera.x);
		wait(1);
	}
}