# Library Tactician Javascriptii

``````// Hushbaum has been ambushed by ogres!
// She is busy healing her soldiers, you should command them to fight!
// The ogres will send more troops if they think they can get to Hushbaum or your archers, so keep them inside the circle!

var archerTarget = null;

// Soldiers spread out in a circle and defend.
function commandSoldier(soldier, soldierIndex, numSoldiers) {
var angle = Math.PI * 2 * soldierIndex / numSoldiers;
var defendPos = {x: 41, y: 40};
defendPos.x += 10 * Math.cos(angle);
defendPos.y += 10 * Math.sin(angle);
hero.command(soldier, "defend", defendPos);
}

// Find the strongest target (most health)
// This function returns something! When you call the function, you will get some value back.
function findStrongestTarget() {
var mostHealth = 0;
var bestTarget = null;
var enemies = hero.findEnemies();
// Figure out which enemy has the most health, and set bestTarget to be that enemy.
var index = 0;
while (index < enemies.length) {
var enemy = enemies[index];
if (enemy.health > mostHealth) {
mostHealth = enemy.health;
bestTarget = enemy;
}
index ++;
}
// Only focus archers' fire if there is a big ogre.
if (bestTarget && bestTarget.health > 15) {
return bestTarget;
} else {
return null;
}
}

// If the strongestTarget has more than 15 health, attack that target. Otherwise, attack the nearest target.
function commandArcher(archer) {
var nearest = archer.findNearestEnemy();
if(archerTarget) {
hero.command(archer, "attack", archerTarget);
} else if(nearest) {
hero.command(archer, "attack", nearest);
}
}

while(true) {
// If archerTarget is defeated or doesn't exist, find a new one.
if(!archerTarget || archerTarget.health <= 0) {
// Set archerTarget to be the target that is returned by findStrongestTarget()
archerTarget = findStrongestTarget();
}
var friends = hero.findFriends();
var soldiers = hero.findByType("soldier");
// Create a variable containing your archers.
var archers = hero.findByType("archer");
for(var i=0; i < soldiers.length; i++) {
var soldier = soldiers[i];
commandSoldier(soldier, i, soldiers.length);
}
// use commandArcher() to command your archers
for (var a = 0; a < archers.length; a ++) {
var archer = archers[a];
hero.command(archer, a, archers.length);
}
}
``````

i get error at this part

``````  for (var a = 0; a < archers.length; a ++) {
var archer = archers[a];
hero.command(archer, a, archers.length);
}
``````