AtomicGameEngine-Examples/SpaceGame/Resources/Components/CapitalShip.js

'atomic component';

exports.component = function(self) {

  var game = Atomic.game;
  var node = self.node;
  var scene = SpaceGame.myscene;

  self.allowShoot = true;
  self.shootDelta = 0;

  self.health = 10;

  self.onHit = function(pos) {

    var expNode = scene.createChild("Explosion");
    var exp = expNode.createJSComponent("Components/Explosion.js", {
      spawnPosition: node.worldPosition2D
    });

    exp.node.scale2D = [2.0, 2.0];

    self.health--;
    if (!self.health) {
      die();
      SpaceGame.win();
    }

  }

  function die() {

    SpaceGame.capitalShipDestroyed();

    for (var i = 0; i < 16; i++) {
      var pos = node.position2D;
      pos[0] += SpaceGame.random(-2, 2);
      pos[1] += SpaceGame.random(-2, 2);

      var expNode = scene.createChild("Explosion");
      var exp = expNode.createJSComponent("Components/Explosion.js", {
        spawnPosition: node.worldPosition2D
      });

      var randomSize = SpaceGame.random(4, 8);
      exp.node.scale2D = [randomSize, randomSize];
    }

  }

  // using start to initialize the script component
  self.start = function() {

    // install AI
    var ai = node.createJSComponent("Components/AI.js");
    ai.canMove = true;

    var spaceSheet = game.getSpriteSheet("Sprites/spacegame_sheet.xml");

    // add a sprite component to our node
    var sprite2D = self.sprite2D = node.createComponent("StaticSprite2D");
    sprite2D.blendMode = Atomic.BLEND_ALPHA;
    sprite2D.sprite = spaceSheet.getSprite("spaceship_locust");
    sprite2D.alpha = 0.0;

    node.position2D = [-4, SpaceGame.halfHeight - 1];
    node.roll(180);

  }

  // update function called per frame with delta time
  self.update = function(timeStep) {

    // fade in
    var alpha = self.sprite2D.alpha;

    if (alpha < 1) {
      alpha += timeStep * 1.5;
      if (alpha > 1)
        alpha = 1;

      self.sprite2D.alpha = alpha;

    }

  }

}