function move_projectile()
{
   var maximum_distance = 15; 
   var projectile_speed = 50; 
   var effect_speed = 0; 
   
   wait(1); 
   c_setminmax(me); 
   my.invisible = on; 
   my.enable_entity = on;    
   my.pan = player.pan;
   my.tilt = player.tilt;
   my.event = remove_projectile; 
   while (maximum_distance > 0) && (my)
   {
      maximum_distance -= 1 * time;
      c_move (me, projectile_speed, nullvector, ignore_passable);
      vec_set (temp.x, my.x); 
      effect (photon_effect, 1, temp, effect_speed);
      wait (1);
   }
   remove_projectile(); //remove me once distance is met
}

function remove_projectile()
{
   wait(1); //wait one frame
   my.event = null;
   my.passable = on;
   my.invisible = on; 
   sleep (2); 
   ent_remove(me); 
}
 

// example
define _distMoved, skill22;
define _hit, flag7;

function projectileEvent() {
	if (event_type == event_entity
	|| event_type == event_impact
	|| event_type == event_push) {
		my._hit = ON;
		my.event = NULL;
		if (you != NULL) { //shouldn't be
			//you._hit = ON;
			//you._hullIntegrity = max(you._hullIntegrity - my._hitPower, 0);
		}
	}
}
function move_projectile() {
	var maximum_distance = 1000; 
	var projectile_speed = 50; 
	var effect_speed = 0; 
	
	wait(1); 
	c_setminmax(me); 
	my.invisible = on; 
	//enable events
	my.enable_entity = on; 
	my.enable_impact = on;
	my.enable_push = on;
	
	if (player != NULL) {
		my.pan = player.pan;
		my.tilt = player.tilt;
	}
	my.event = projectileEvent;
	while (me != NULL) {
		if (my._distMoved > maximum_distance 
		|| my._hit == ON) {
			break;
		}
		my._distMoved += c_move (me, vector(projectile_speed, 0, 0), nullvector, ignore_passable);
		vec_set (temp.x, my.x); 
		effect (photon_effect, 1, temp, effect_speed);
		wait (1);
	}
	//removal of entity
	if (me != NULL) {
		if (my._hit == ON) {
			//create hit flash
			//play sound using hit flash
		} else {
			if (my._distMoved >= maximum_distance) {
				//fade out?
			}
		}
		ent_remove(me);
	}
}