Created
April 1, 2015 19:59
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<div id="images"> | |
<img id="image_lisa" width="32" height="32" src="lisa.png"> | |
<img id="image_meggie" width="32" height="32" src="meggie.png"> | |
</div> | |
<canvas id="canvas" width="854" height="480"></canvas> | |
<script type="text/javascript"> | |
var Game = function() { | |
var canvas = document.getElementById('canvas'); | |
this.ctx = canvas.getContext('2d'); | |
this.height = parseInt(canvas.attributes.height.value); | |
this.width = parseInt(canvas.attributes.width.value); | |
this.mouse = {}; | |
canvas.addEventListener('mousemove', this.mouseMove.bind(this)); | |
window.graphics = new Graphics(this.ctx, this.width, this.height); | |
this.objects = []; | |
this.objects.push(new Player(0, 'image_lisa')); | |
this.objects.push(new Player(1, 'image_meggie')); | |
this.update(); | |
}; | |
Game.prototype.update = function() { | |
for(var i = 0; i < this.objects.length; i++) { | |
this.objects[i].update(); | |
} | |
this.render(); | |
setTimeout(this.update.bind(this), 16); | |
}; | |
Game.prototype.render = function() { | |
graphics.clearScreen(); | |
for(var i = 0; i < this.objects.length; i++) { | |
this.objects[i].render(); | |
} | |
}; | |
Game.prototype.mouseMove = function(e) { | |
}; | |
var Graphics = function(ctx, width, height) { | |
this.ctx = ctx; | |
this.width = width; | |
this.height = height; | |
this.images = {}; | |
}; | |
Graphics.prototype.clearScreen = function() { | |
this.ctx.clearRect(0, 0, this.width, this.height); | |
this.drawRect(0, 0, this.width, this.height); | |
}; | |
Graphics.prototype.drawRect = function(x, y, w, h, c, a) { | |
if(typeof c === 'undefined') c = '#000'; | |
if(typeof a === 'undefined') a = 1; | |
this.ctx.fillStyle = c; | |
this.ctx.globalAlpha = a; | |
this.ctx.fillRect(x, y, w, h); | |
}; | |
Graphics.prototype.drawOutline = function(x, y, w, h, c, a) { | |
if(typeof c === 'undefined') c = '#000'; | |
if(typeof a === 'undefined') a = 1; | |
this.ctx.strokeStyle = c; | |
this.ctx.globalAlpha = a; | |
this.ctx.strokeRect(x, y, w, h); | |
}; | |
Graphics.prototype.drawImage = function(imageId, x, y) { | |
this.ctx.drawImage(this.getImage(imageId), x, y); | |
}; | |
Graphics.prototype.getImage = function(imageId) { | |
if(typeof this.images[imageId] === 'undefined') { | |
var image = document.getElementById(imageId); | |
if(image === null) { | |
console.error('Image with id ' + imageId + ' was not found'); | |
return undefined; | |
} | |
this.images[imageId] = image; | |
} | |
return this.images[imageId]; | |
}; | |
var Player = function(row, imageId) { | |
var image = graphics.getImage(imageId); | |
this.imageId = imageId; | |
this.x = 0; | |
this.y = row * image.height; | |
}; | |
Player.prototype.update = function() { | |
}; | |
Player.prototype.render = function() { | |
graphics.drawImage(this.imageId, this.x, this.y); | |
}; | |
var Dice = function() { | |
this.x = 64; | |
this.y = 256; | |
} | |
Dice.prototype.update = function() { | |
}; | |
Dice.prototype.render = function() { | |
}; | |
window.onload = function() { | |
window.game = new Game(); | |
} | |
</script> |
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