CodeCombat: Backwoods Brawl Solution

coco.backwoods.brawl.js

// Stay alive for one minute.
// If you win, it gets harder (and more rewarding).
// If you lose, you must wait a day before you can resubmit.
// Remember, each submission gets a new random seed.

// Determines if Warrior should use cleave
// When?
// - If cleave is ready AND
// - If there are more than 2 enemies within cleave range
this.shouldCleave = function() {
    if ( this.enemiesWithinRange(10) > 2 && this.isReady("cleave") ) {
        return true;
    } else {
        return false;
    }
};

// returns the number of enemies within the specified distance
this.enemiesWithinRange = function(distance) {
    var enemies = this.findEnemies();
    var num     = 0;
    
    for (var i = 0; i < enemies.length; i++) {
        if (this.distanceTo(enemies[i]) <= distance) {
            num++;
        }
    }
    
    return num;
};

// find the nearest thrower type unit
this.findNearestThrower = function() {
    var enemies  = this.findEnemies();
    var throwers = []; // array of existing throwers
    
    for (var i = 0; i < enemies.length; i++) {
        if (enemies[i].type == 'thrower') {
            throwers.push(enemies[i]);
        }
    }
    
    return this.findNearest(throwers);
};

loop {
    thrower = this.findNearestThrower();
    
    // attack throwers first
    if (thrower) {
        if (this.shouldCleave()) {
            this.cleave(thrower);
        } else {
            this.attack(thrower);
        }
    
    // attack other enemies
    } else {
        enemy = this.findNearest(this.findEnemies());
        
        if (enemy) {
            if (this.shouldCleave()) {
                this.cleave(enemy);
            } else {
                this.attack(enemy);
            }
        }
    }
}