// code lend from JulzMighty : http://www.opserver.de/ubb7/ubbthreads.php?ubb=showflat&Number=291799#Post291799
void alignToVec(ANGLE* entAng, VECTOR* vec, VECTOR* axis, var factor) {
	vec_rotate(axis, entAng);
	vec_normalize(axis, 1);
	vec_normalize(vec, 1);
	VECTOR rotAxis;
	vec_cross(rotAxis, vec, axis);
	var angle = -acos((float)vec_dot(axis, vec)) * factor * vec_length(rotAxis);
	ANGLE rotAngle;
	ang_for_axis(rotAngle, rotAxis, angle);
	ang_add(entAng, rotAngle);
}

// do a trace to get the z position below the entity
tracePos = c_trace(my.x, vector(my.x, my.y, my.z - 500), IGNORE_FLAG2 | IGNORE_ME | IGNORE_PASSABLE | IGNORE_PUSH);
alignToVec(my.pan, normal, vector(0,0,1), 15); // awesome for scaling walls, bit useless in a beat em up
// set the position of the entity smoothly to the trace target