if yes... try something like this: //not tested but should be fine
Code:

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entity* my_target;
entity* player;

define speed, skill1;
var distance[3];
var lets_move;

function put_target
{
	my_target = me; 
	my.passable =on; 
	my.invisible =on;
	while(1)
	{
		MOUSE_POS.X = POINTER.X; MOUSE_POS.Y = POINTER.Y;
		temp.x = MOUSE_POS.x; 
		temp.y = MOUSE_POS.y; 
		temp.z = 100;				
		vec_for_screen(temp,CAMERA);
		vec_set(my.x, temp);
		temp.z -=  1000; 
		trace_mode = IGNORE_ME + IGNORE_PASSABLE + IGNORE_SPRITES + ignore_models + use_box + scan_texture; 
		result = trace (my.x, temp);
		my.z -= result;
	wait(1);
	}
}

action player_action
{
	player = me; my.narrow =on;
	you = ent_create("model.mdl",my.x,put_target); //f.e. small cube
	my.speed = 60; //change this to your world scale
	while(1)
	{
		distance = vec_dist(my.x,my_target.x);
		if(lets_move == 1)
		{
		 	vec_set(temp,my_target.x); 
			vec_sub(temp,my.x);
			vec_to_angle(my.pan,temp); 
			c_move(me,vector(my.speed *time_step *1,0,0),nullvector,GLIDE | ACTIVATE_TRIGGER | IGNORE_SPRITES | IGNORE_PASSENTS | use_box);
			if(distance <= 10){lets_move =0};
		}
	my.tilt =0;
	wait(1);
	}
}

function lets_go
{
 lets_move = 1;
}

on_mouse_left lets_go;

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