GameLoopJS
Introduction
There is nothing fancy about it, GameLoop just calls update() and render() of added Objects by defined frames per second. The default frames per second are 60, you can change it by calling:
GameLoop.fps(30);How To Use:
Lets start with creating the basic HTML:
<html>
<head>
<title>Basic HTML</title>
<script src="gameloop.min.js"></script>
<!-- your scripts -->
</head>
<body>
<canvas height="640" width="480" id="yourCanvasId"></canvas>
</body>
</html>Initialize GameloopJS
GameLoop.init('yourCanvasId');Add game objects
Like mentioned before GameLoop mainly takes care of the update circles. So your object should have the two functions update and render.
Update will be called before render.
// Example: Bouncing Box
// @desc red square that moves
// down until it hits the canvas height
// or up until it hits the 0 point of the canvas
var YourObject = function() {
var render,
update,
position,
speed = 1;
position = {
x: 50,
y: 50
};
render = function() {
var ctx = GameLoop.context();
ctx.fillStyle = "red";
ctx.fillRect(this.position.x,this.position.y,50,50);
};
update = function() {
canvas = GameLoop.canvas();
if(position.y >= canvas.height - 50 /* height of the rectangle */){
speed = -1;
} else if(position.y <= 0){
speed = 1;
}
this.position.y += speed * GameLoop.deltaTime();
};
return {
render: render,
update: update
};
};Now all you have to do is to create an instance of our new Object and add it to the GameLoop
// add your object
var yourObject = new YourObject();
GameLoop.addObject(yourObject);Start the Game
Start the loop
GameLoop.start();Stop the Game
Stop the loop
GameLoop.stop();Parameters
For smooth movement use ***deltaTime()***:
GameLoop.deltaTime();Canvas:
var canvas = GameLoop.canvas;Context:
var ctx = GameLoop.context;Notice
GameLoopJS is still in an early stage of development and may change in future versions.
License
The MIT License (MIT)
Copyright (c) 2013-2014 Markus Waitl
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
