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

TheLevel = self;

var node = self.node;

var tmxFile = cache.getResource("TmxFile2D", "Levels/Level1.tmx");

var tileMapNode = scene.createChild("TileMap");
tileMapNode.setPosition([0.0, 0.0, 0.0]);

var tileMap = tileMapNode.createComponent("TileMap2D");
tileMap.setTmxFile(tmxFile);

PlayerSpawnPoint = [0, 0];

var platforms = {};

self.coinNodes = [];

// parsed coins
var coins = [];

camera.setZoom(.75);


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

    if (nodeA == ThePlayer.node && self.coinNodes.indexOf(nodeB) != -1) {    
        nodeB.coin.onPlayerHit();
    }

}


// create a platform based on start and stop TileMapObject2D

function createPlatform(start, stop) {

    var platformNode = scene.createChild("Platform");
    platform = platformNode.createComponent("JSComponent");

    // setting the classname calls start, we need a way to provide
    // component values before this, as anything is the component function
    // will override the values set before className is set
    // for now, this works
    platform.startPos = start.position;
    platform.stopPos = stop.position;
    platform.className = "Platform";

}

function createCoin(obj) {

    var coinNode = scene.createChild("Coin");
    coinNode.position2D = obj.position;
    coin = coinNode.createJSComponent("Coin");
    self.coinNodes.push(coinNode);
}

function parseEntities() {

    entityLayer = tileMap.getLayerByName("Entities");

    if (entityLayer) {

        for (var i = 0; i < entityLayer.numObjects; i++) {

            var o = entityLayer.getObject(i);
            var onode = entityLayer.getObjectNode(i);

            if (o.type == "PlayerSpawn")
                PlayerSpawnPoint = onode.position2D;
            else if (o.type == "PlatformStart") {
                var pnum = Number(o.getProperty("Platform"));

                if (!platforms.hasOwnProperty(pnum))
                    platforms[pnum] = [null, null];

                platforms[pnum][0] = o;
            } else if (o.type == "PlatformStop") {
                var pnum = Number(o.getProperty("Platform"));

                if (!platforms.hasOwnProperty(pnum))
                    platforms[pnum] = [null, null];

                platforms[pnum][1] = o;
            } else if (o.type == "Coin") {

                coins.push(o);

            }

        }
    }

    for (var pnum in platforms) {

        createPlatform(platforms[pnum][0], platforms[pnum][1]);

    }

    for (var i in coins) {

        createCoin(coins[i]);

    }

}

function parsePhysics() {

    physicsLayer = tileMap.getLayerByName("Physics");

    if (physicsLayer) {

        for (var i = 0; i < physicsLayer.numObjects; i++) {

            var o = physicsLayer.getObject(i);

            var onode = physicsLayer.getObjectNode(i);
            var group = tmxFile.getTileObjectGroup(o.tileGid);
            var obody = null;

            if (group) {

                for (var j = 0; j < group.numObjects; j++) {

                    var go = group.getObject(j);

                    if (go.validCollisionShape()) {

                        if (!obody) {
                            obody = onode.createComponent("RigidBody2D");
                            obody.bodyType = Atomic.BT_DYNAMIC;
                            obody.awake = false;

                        }

                        var shape = go.createCollisionShape(onode);
                        shape.density = 1.0;
                        shape.friction = 1.0;
                        shape.restitution = .1;

                    }
                }
            }
        }
    }
}

function start() {
    self.listenToEvent(null, "PhysicsBeginContact2D", self.onPhysicsBeginContact2D);
    parsePhysics();
    parseEntities();

}