Demo style

bulletManager.js

/*
      Bullet Manager
*/

GAME.BulletManager = function () {

      this.data;
      this.container;
      this.bulletSpeed = 500;

};

GAME.BulletManager.prototype = {

      init: function () {

            this.data = new Array();

            this.container = new CAAT.ActorContainer(CAAT.ActorContainer.AddHint.CONFORM);
            this.container.setBounds(0, 0, 640, 480);
            this.container.enableEvents(false);

            for (var i = 0; i < 150; i++)
            {
                  // trace("i: " + i + " = " + i % 3);
                  var bullet = new GAME.Bullet( this.container, (i % 3) + 1 );

                  this.data.push(bullet);
            }

      },

      fire: function ( x, y ) {

            var bullet = this.getAvailableBullet(game.loop.player.weaponType);

            if (bullet === null)
            {
                  return;
            }

            if (game.loop.player.weaponType === 1)
            {
                  bullet.fire(x + 12, y, this.bulletSpeed);
            }
            else if (game.loop.player.weaponType == 2)
            {
                  bullet.fire(x + 9, y - 8, this.bulletSpeed);
            }
            else if (game.loop.player.weaponType == 3)
            {
                  bullet.fire(x - 8, y - 20, this.bulletSpeed);
            }

      },

      update: function () {

            this.collide();

      },

      collide: function () {

            game.loop.enemies.populateCollisionHash();

            for (var i = 0; i < this.data.length; i++)
            {
                  var bullet = this.data[i];

                  if (bullet.alive === true)
                  {
                        game.loop.hash.collide( bullet.actor.x, bullet.actor.y, bullet.actor.width, bullet.actor.height, function (obj) { bullet.collide(obj); return true; } );
                  }
            }

      },

      getAvailableBullet: function ( type ) {

            for (var i = 0; i < this.data.length; i++)
            {
                  if (this.data[i].alive === false && this.data[i].bulletType === type)
                  {
                        return this.data[i];
                  }
            }

            return null;

      }

};

/*
      A Bullet
*/

GAME.Bullet = function ( parent, type ) {

      this.container = parent;
      this.actor = new CAAT.Actor().setBackgroundImage(game.director.getImage('bulletType' + type));
      this.actor.self = this;
      this.alive = false;
      this.bulletType = type;

};

GAME.Bullet.prototype = {

      constructor: GAME.Bullet,

      fire: function ( x, y, speed ) {

            this.actor.setPosition(x, y);

            this.container.addChild(this.actor);

            this.actor.visible = true;

            this.alive = true;

            var path = new CAAT.LinearPath().setInitialPosition(x, y).setFinalPosition(x, -64);

            var time = (speed / 480) * y;

            var behavior = this.actor.addBehavior(new CAAT.PathBehavior().setValues(path).setDelayTime(0, time).addListener({ behaviorExpired: this.reset }));

      },

      collide: function ( alien ) {

            this.reset();

            game.loop.enemies.kill(alien.id);

      },

      reset: function ( behavior, time, actor ) {

            actor.visible = false;

            actor.parent.removeChild(actor);

            actor.self.alive = false;

      }

};