vidimost=100 //зона видимости
sped=3//скорост движение к врагу

if instance_exists(obj_player)
{
if distance_to_object(obj_player)<vidimost
{
mp_potential_step(obj_player.x, obj_player.y,sped,false);
}
else
speed=0
}

if vidimost=0
{
direction=point_direction(x,y,obj_player.x,obj_player.y)
}