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

var game = Atomic.game;
var node = self.node;

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

var moveDelta = 0;

function start() {

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

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

    node.position2D =  self.spawnPosition;
    node.roll(180);
    node.scale2D = [0.65, 0.65];

    self.dir = (Math.random() > .5);


}

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

    var pos = node.position2D;
    var ppos = SpaceGame.playerNode.position2D;
    
    if (Math.abs(pos[0] - ppos[0]) < .25) {
        
        //aiShoot(timeStep);

    }

    if (Math.random() > .98)
    {
        self.dir = !self.dir;
    }


    moveDelta += (self.dir ? timeStep * 4 : -timeStep * 4);    

    pos = [self.spawnPosition[0], self.spawnPosition[1]];
    pos[1] += Math.sin(moveDelta) * .1;
    node.position2D = pos;

}