function c_doenemyai(target) {
	switch target.data.aitype {
		case AI.AFK:
			target.waiting = true;
			break;
		case AI.KILLER:
			var dude = c_findnearestunit(ARMY.US);
			repeat(target.data.mov.val) {
				var dist = c_tiledist(target.pos.x, target.pos.y, dude.pos.x, dude.pos.y);
				if dist.x+dist.y <= target.data.rng.val {
					log("started combat")
					c_generatecombatstack([target, dude]);
					break;
				}
				log(c_tiledist(target.pos.x, target.pos.y, dude.pos.x, dude.pos.y));
				var guy = c_gettile(target.pos.x, target.pos.y);
				if target.pos.x < dude.pos.x {
					var guy = c_gettile(target.pos.x+1, target.pos.y);
				} else if target.pos.x > dude.pos.x {
					var guy = c_gettile(target.pos.x-1, target.pos.y);
				}
				if target.pos.y < dude.pos.y {
					var guy = c_gettile(target.pos.x, target.pos.y+1);
				} else if target.pos.y > dude.pos.y {
					var guy = c_gettile(target.pos.x, target.pos.y-1);
				}
				if guy != noone {
					if guy.passable && !c_containsunit(guy.x, guy.y) {
						c_moveunit(target, guy);
					}
				}
				c_loadmarkings();
			}
			target.waiting = true;
			break;
		case AI.WAITER:
			target.waiting = true;
			break;
		case AI.ESCAPER:
			target.waiting = true;
			break;
	}
	c_loadmarkings();
}

function c_findnearestunit(alignment) {
	var lowest = new vec2(99, 99);
	var lowestunit = noone;
	for (i=0; i<array_length(global.units[alignment]); i++) {
		var guy = global.units[alignment][i].pos;
		if (lowest.x + lowest.y > guy.x + guy.y) {
			lowest = guy;
			lowestunit = global.units[alignment][i];
		}
	}
	return lowestunit;
}