AtomicGameEngine-Examples/PhysicsPlatformer/Resources/Components/Coin.js

// FIXME
keepAlive = typeof(keepAlive) == "undefined" ? [] : keepAlive;
keepAlive.push(self);

var glmatrix = require("gl-matrix");
var vec2 = glmatrix.vec2;

var node = self.node;

// Resources
var animationSet = cache.getResource("AnimationSet2D", "Sprites/GoldIcon.scml");
var coinSound = cache.getResource("Sound","Sounds/Pickup_Coin8.ogg");
var coinBounceSound = cache.getResource("Sound","Sounds/Coin_Bounce.ogg");

var sprite = node.createComponent("AnimatedSprite2D");
sprite.setAnimation(animationSet, "idle");
sprite.setLayer(100);

var activated = false;

var body;

function onPlayerHit() {
    
    // sprite enabled is not removing the sprite
    node.scale2D = [0, 0];
    sprite.enabled = false;
    body.enabled = false;
    self.soundSource.gain = 1.0;
    self.soundSource.play(coinSound );
    
}

self.onPhysicsBeginContact2D = function(world, bodyA, bodyB, nodeA, nodeB) {

    if (nodeA == ThePlayer.node && nodeB == node) {
        onPlayerHit();
    }
    else if (nodeB == node)
    {
        var vel = body.linearVelocity;
        if (vec2.length(vel) > 3)
        {
            self.soundSource.gain = .4;
            self.soundSource.play(coinBounceSound);
       }
    }

}


function start() {

    self.soundSource = node.createComponent("SoundSource");
    self.soundSource.soundType = Atomic.SOUND_EFFECT;
    
    // would just like to listen to body collisions here
    self.listenToEvent(null, "PhysicsBeginContact2D", self.onPhysicsBeginContact2D);
    

}

function update(timeStep) {

    if (activated)
        return false;

    if (vec2.distance(cameraNode.position2D, node.position2D) < 3.0) {
        activated = true;

        body = node.createComponent("RigidBody2D");
        body.setBodyType(Atomic.BT_DYNAMIC);
        body.fixedRotation = true;

        var circle = node.createComponent("CollisionCircle2D");
        // Set radius
        circle.setRadius(.3);
        // Set density
        circle.setDensity(1.0);
        // Set friction.
        circle.friction = .2;
        // Set restitution
        circle.setRestitution(.8);


    }

}