hi, i clear the bracket and modified the code in some cases, is equal but more nicely...and i have other error lol, (sorry for the much questions but i am begginer), look the update code:

(the fields in red colour are the updates)

Code:

---

  
var player_distance; // moves the player
var enemy_distance; // moves the enemy
var distance;

define sword_base = skill12; // using skill12, 13, 14 to store the sword_base coords
define sword_tip = skill15; // using skill15, 16, 17 to store the sword_tip coords
define healthpoints = skill18; // just another name for skill18

entity* enemy;

action enemy_fight // attached to the enemy
{
	 distance = vec_dist (my.x, player.x); 
	enemy = me; // I'm the enemy

	enemy.healthpoints = 100; // and I have 100 healthpoints
	 while(!player) { wait(1); }  // wait until the player exists
	{
		 if (distance < 200)  // the player approaches the enemy
		{
			vec_set(temp, player.x); 
			vec_sub(temp, my.x);
			vec_to_angle(my.pan, temp);
			my.tilt = 0; // I'm a maniac :)
			enemy_distance.x = 5 * time;		
			enemy_distance.y = 0;
			enemy_distance.z = 0;
			ent_move(enemy_distance, nullvector);
			ent_cycle("walk", my.skill19); // play walk frames animation
			my.skill19 += 5 * time; // "walk" animation speed
			if (my.skill19 > 100) {my.skill19 = 0;} // loop animation
			if (vec_dist (my.x, player.x) < 50) // if the player comes closer than 50 quants attack him
			{
				my.skill20 = 0; // reset "attack" frames
				while (my.skill20 < 100)
				{
					ent_vertex(my.sword_tip, 291); // sword tip vertex coords - get the value in Med
					ent_vertex(my.sword_base, 306); // sword base vertex coords - get the value in Med
					trace_mode = ignore_me + ignore_passable;
					trace (my.sword_base, my.sword_tip); // trace between these sword positions
					if (result != 0) // hit something, could be the player or another enemy
					{
						
						if (you != null) {you.healthpoints -= 4 * time;}
						
					}
					ent_cycle("attack", my.skill20); // play attack frames animation
					my.skill20 += 5 * time; // "attack" animation speed				
					wait (1);
				}
				waitt (6); // slows down the enemy and reduces the number of traces per second
			}
		}
		else // the player is farther than 200 quants away
		{
			ent_cycle("stand", my.skill21); // play stand frames animation
			my.skill21 += 2 * time; // "stand" animation speed
			if (my.skill21 > 100) {my.skill21 = 0;} // loop animation
		}
		wait (1);
	 
	while (my.skill22 < 80) // the enemy is dead
	{
		ent_cycle("death", my.skill22); // play death frames animation
		my.skill22 += 1 * time; // "death" animation speed
		wait (1);
	}

	my.passable = on; // the corpse can't be hit by the sword from now on
}

---

Good, put me error in ejecution: "Empty pointer in enemy_fight: distance=vec_dist(my.x,player.x)"

Help me please. bye