CodeCombat: Hunting Party Solution

coco.hunting.party.js

// http://codecombat.com/play/level/hunting-party

// Strategy: move all troops continuously to the right,
//   making sure to keep the archers behind the frontline
//   so that the soldiers take the enemy attacks. Player
//   character follows along the front line and heals
//   any soldier/archer that is below max health.

var front   = [ 30, 30, 30 ]; // Frontline for Groups

while (true) {
    var friends = this.findFriends();
    
    for (var i = 0; i < friends.length; i++) {
        // Assign Groups to Friends
        if (friends[i].pos.y > 56) {
            friends[i].group = 0;
        } else if (friends[i].pos.y < 37) {
            friends[i].group = 2;
        } else {
            friends[i].group = 1;
        }
        
        // Movement, Groups
        if (friends[i].type == "soldier") {
            this.command(friends[i], "move", {
                x: friends[i].pos.x + 5, y: friends[i].pos.y
            });
            
            if (friends[i].pos.x > front[friends[i].group]) {
                front[friends[i].group] = friends[i].pos.x;
            }
        } else {
            this.command(friends[i], "move", {
                x: front[friends[i].group] - 5, y: friends[i].pos.y
            });
        }
        
        // Healing
        if (friends[i].health < friends[i].maxHealth) {
            if (this.canCast("regen", friends[i])) {
                this.cast("regen", friends[i]);
            }
        }
        
        // Attack
        var enemy = friends[i].findNearestEnemy();
        if (enemy) {
            this.command(friends[i], "attack", enemy);
        }
    }
    
    // Movement, Me
    this.move( { x: front[1], y: this.pos.y } );
}