Reaping Fire - JS

Level Help
1

My Griffin-Riders do not try to attack Fangriders until they have crossed the mines, and they only shoot one spear.

function chooseStrategy() {
    // If you can summon a griffin-rider, return "griffin-rider"
    if (hero.gold >= hero.costOf("griffin-rider")) {
        hero.summon("griffin-rider");
        return "griffin-rider";
    }
    // If there is a fangrider on your side of the mines, return "fight-back"
    let enemy = hero.findNearestEnemy();
        if (enemy && enemy.type == "fangrider" && enemy.pos.x < 38) {
            return "fight-back";
        }
    // Otherwise, return "collect-coins"
    return "collect-coins";
}
function commandAttack() {
    // Command your griffin riders to attack ogres.
    let griffinRiders = hero.findFriends();
    for (let griffinRider of griffinRiders) {
        let enemy = griffinRider.findNearestEnemy();
        if (enemy) {
            hero.command(griffinRider, "attack", enemy);
        }
    }
}
function heroAttack() {
    // Your hero should attack fang riders that cross the minefield
    let enemy = hero.findNearestEnemy();
        if (enemy && enemy.type == "fangrider" && enemy.pos.x < 38) {
            hero.attack(enemy);
    }
}
function pickUpCoin() {
    // Collect coins
    let item = hero.findNearestItem();
        hero.move(item.pos);
}
while (true) {
    let strategy = chooseStrategy();
    // Call a function, depending on what the current strategy is.
    if (strategy == "griffin-rider") {
        commandAttack();
    }
    if (strategy == "fight-back") {
        heroAttack();
    }
    if (strategy == "collect-coins") {
        pickUpCoin();
    }
}