Core.js

//Documentation stuff here
function start() {
	webGLStart();
	
	//RequestAnimationFrame code from flocking demo
	var reqFrame = window.requestAnimationFrame ||
        window.webkitRequestAnimationFrame ||
        window.mozRequestAnimationFrame ||
        window.oRequestAnimationFrame ||
        window.msRequestAnimationFrame ||
        function (/* function FrameRequestCallback */callback, /* DOMElement Element */element) {
            window.setTimeout(callback, 1000 / frameRate);
        };
    theCanvas = document.getElementById("canvas");
    theContext = theCanvas.getContext("2d");
    
    
    //TODO: Used to debug the code. Delete when done.
    function spam(otpt) {
    	dbg = document.getElementById("debugtext");
    	dbg.innerHTML = otpt;
    }
    //TODO: End of debug element.
    
    //world created with 0 gravity, and sleep is disabled
    world = new b2World(new b2Vec2(0,0),false);
    //properties of objects
    bdef = new b2BodyDef;
    bdef.allowSleep = false;
    bdef.type = b2Body.b2_dynamicBody
    fdef = new b2FixtureDef;
    fdef.density = ddensity;
    fdef.friction = dfriction;
    fdef.restitution = drestitution;
    fdef.shape = new b2CircleShape(1.0);
    jdef = new b2WeldJointDef;
    

    function cull(a, b) {//sorting function, puts stuff tagged for removal at end to be popped, as used in Swarm Survival Game
        if (a.remove) { return 1; }
        else if (b.remove) { return -1; }
        else { return 0; }
    }
    
    window.addEventListener("keydown", function (e) {	//keyboard detection function as used in Swarm Survival Game
        if (!(e.keyCode in keysDown)) {
            //firstKeyHit(e.keyCode);
        }
        keysDown[e.keyCode] = true;

    }, false);
    window.addEventListener("keyup", function (e) { delete keysDown[e.keyCode]; }, false);
    
    function listen() {//account for effects of EventListeners
    	
    }
    
    
    var collider = new b2ContactListener;
    collider.BeginContact = function(contact) {
    	
    }
    collider.EndContact = function(contact) {
    	
    }
    collider.PostSolve = function(contact, impulse) {
    	
    }
    collider.PreSolve = function(contact, oldManifold) {
    	
    }
    this.world.SetContactListener(collider);
    
    
    
    //TODO: DEMO CODE
    objectList.push(makeObject(crateType, 80, 39, 0, [1,1]));
   	objectList.push(makeObject(crateType, -1000, 30, Math.random(), [1,1]));
   	objectList.push(makeObject(crateType, 80, 40, 0, [1,1]));
   	objectList.push(makeObject(crateType, 80, 41, 0, [1,1]));
   	objectList.push(makeObject(crateType, 81, 39, 0, [1,1]));
   	objectList.push(makeObject(crateType, 81, 40, 0, [1,1]));
   	objectList.push(makeObject(crateType, 81, 41, 0, [1,1]));
    stuffList.push(makeWeld(objectList[0].body,objectList[2].body,true,200+Math.random()*300));
    stuffList.push(makeWeld(objectList[0].body,objectList[4].body,true,200+Math.random()*300));
    stuffList.push(makeWeld(objectList[4].body,objectList[5].body,true,200+Math.random()*300));
    stuffList.push(makeWeld(objectList[5].body,objectList[6].body,true,200+Math.random()*300));
    stuffList.push(makeWeld(objectList[2].body,objectList[5].body,true,200+Math.random()*300));
    stuffList.push(makeWeld(objectList[2].body,objectList[3].body,true,200+Math.random()*300));
    stuffList.push(makeWeld(objectList[3].body,objectList[6].body,true,200+Math.random()*300));
    for(i = 0; i < 40; i++) {
    }
    crateStack(160, 40, 0, -5000, 0, 0, 1, 1, 2, 2, 50, 50, 0);
    crateStack(0, 40, 0, 0, 0, 0, 1, 1, 2, 2, 50, 50, 0);
   	//objectList[1].effect = railDriverEffect;
   	objectList[1].data = new b2Vec2(100,0);
   	//objectList[0].effect = stasisEffect;
   	//objectList[0].timer = 60;
    objectList[1].body.SetLinearVelocity(new b2Vec2(400+Math.random()*500,(Math.random()-0.5)*40));
    objectList[1].body.SetAngularVelocity((Math.random()-0.5)*60);
    //TODO: END OF DEMO CODE
    
    Player.init();
    
       
    function update() {
    //	theContext.clearRect(0, 0, theCanvas.width, theCanvas.height);
    	//webGLDraw();
		 prepareScene();
		/* vertices = [
             1.0,  1.0,  0.0,
            -1.0,  1.0,  0.0,
             1.0, -1.0,  0.0,
            -1.5, -1.0,  0.0
        ];
		var position = new Object;
		position.x = 1.5;
		position.y = 0.0;
		addSquare(position, vertices);
		*/
    	Player.action();
    	world.Step(1/frameRate, 10, 10);	//advance physics engine
    	for(i = 0; i < objectList.length; i++) {
    		objectList[i].action();
    		if(purgeFlag) {
    			objectList.sort(cull);
    			objectList.pop();
    			purgeFlag = false;
    		}
    	}
    	for(i = 0; i < stuffList.length; i++) {
    		stuffList[i].action();
    		if(purgeFlag) {
    			stuffList.sort(cull);
    			stuffList.pop();
    			purgeFlag = false;
    		}
    	}

    	world.ClearForces();
    	for(i = 0; i < objectList.length; i++) {
    		objectList[i].draw();
    	}
		
    	//Player.draw();
		Player.drawShield();
    	
    	
    	runEvents();
    	reqFrame(update);	//set up another iteration
    }
    update();
}