Descent-Zero/D0.html at master · CDarrow/Descent-Zero · GitHub

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<html>
	<head>
    <title>Descent Zero</title>


  </head>

  <body bgcolor="#000000">
    <script type="text/javascript" src="ship.js"></script>
    <script type="text/javascript" src="controls.js"></script>
    <script type="text/javascript" src="laser.js"></script>
    <script type="text/javascript" src="drone.js"></script>
    <script type="text/javascript" src="particles.js"></script>

    <script type="text/javascript">
    // requestAnim shim layer by Paul Irish
    window.requestAnimFrame = (function(){
        return  window.requestAnimationFrame       ||
                window.webkitRequestAnimationFrame ||
                window.mozRequestAnimationFrame    ||
                window.oRequestAnimationFrame      ||
                window.msRequestAnimationFrame     ||
                function(/* function */ callback, /* DOMElement */ element){
                  window.setTimeout(callback, 1000 / 60);
                };
        })();

      var canvas, context;

      var ship;
      var drone;
      var controls;

      var lasers;
      var dronelasers;
      var particles;

      var lastDraw;

      var e;

      init();
      animate();

      function init() {
        canvas = document.createElement('canvas');
        canvas.width = 512;
        canvas.height = 512;

        context = canvas.getContext('2d');

        document.body.appendChild(canvas);

        context.fillStyle = 'rgb(0,0,0)';
        context.fillRect(0,0,512,512);

        lastDraw = new Date().getTime();

        ship = new Ship();
        drone = new Class1Drone(100,100,0,ship);
        controls = new Controls(ship);
        lasers = [];
        particles = [];
        dronelasers = [];

        ship.lasers = lasers;

        e = new Explosion(300,300);

        document.addEventListener( 'keydown', controls.keyDown, false);
        document.addEventListener( 'keyup', controls.keyUp, false);
      }

      function animate() {
        requestAnimFrame( animate );
        draw();
      }

      function draw() {

        context.fillStyle = 'rgb(0,0,0)';
        context.strokeStyle = 'rgb(32,32,32)';
        context.lineWidth = 2;
        context.fillRect(0,0,512,512);
        context.strokeRect(0,0,512,512);

        var timeNow = new Date().getTime();
        var timeSinceLastFrame = timeNow - lastDraw;
        lastDraw = timeNow;

        ship.update(timeSinceLastFrame);
        ship.draw(context);

        drone.update(timeSinceLastFrame, dronelasers);
        drone.draw(context);

        for(var i=0; i < lasers.length; i++) {
          lasers[i].update(timeSinceLastFrame);


          if( ! drone.dead &&
              Math.sqrt((lasers[i].x - drone.x)*(lasers[i].x - drone.x) +
                        (lasers[i].y - drone.y)*(lasers[i].y - drone.y)) < drone.radius + lasers[i].hitRadius) {

            if(lasers[i].fusion) {
              var dmg = lasers[i].getDamage(drone);
              if(dmg > 0) drone.takeHit(dmg);

              lasers[i].draw(context);

              particles.push(new Spark(lasers[i].x, lasers[i].y));
            } else {
              drone.takeHit(lasers[i].damage);
              lasers[i].dead = true;
            }
          } else {
            lasers[i].draw(context);
          }

          if(lasers[i].dead) {
            particles.push(new Spark(lasers[i].x, lasers[i].y));
          }
        }


        for(var i=0; i < dronelasers.length; i++) {
          dronelasers[i].update(timeSinceLastFrame);

          var dx = dronelasers[i].x;
          var dy = dronelasers[i].y;

          var sx = ship.posx;
          var sy = ship.posy;
          if(!(ship.dead) && Math.sqrt((dx - sx)*(dx - sx) + (dy - sy)*(dy-sy)) < ship.radius + dronelasers[i].hitRadius) {
            ship.takeHit(dronelasers[i].damage);
            dronelasers[i].dead = true;
          }

          if(dronelasers[i].dead) {
            particles.push(new Spark(dronelasers[i].x, dronelasers[i].y));
          } else {
            dronelasers[i].draw(context);
          }
        }

        if(ship.dead && ! ship.exploded) {
          particles.push(new Explosion(ship.posx, ship.posy));
          ship.exploded = true;
        }

        if(drone.dead && ! drone.exploded) {
          particles.push(new Explosion(drone.x, drone.y));
          drone.exploded = true;
        }

        for(i = 0; i < particles.length; i++) {
          particles[i].update(timeSinceLastFrame);
          particles[i].draw(context);
        }

        removeDead();
      }

      function removeDead() {
        lasers = lasers.filter(function (elem, index, array) { return ! elem.dead });
        ship.lasers = lasers;

        particles = particles.filter(function (elem, index, array) { return ! elem.dead });

        dronelasers = dronelasers.filter(function (elem, index, array) { return ! elem.dead });
      }


    </script>
  </body>
</html>