Created
December 3, 2010 15:19
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<html> | |
<head> | |
<script type="text/javascript">; | |
function mainLoop(){ | |
ctx.clearRect(0,0,500,410); | |
playerPaddle.shape() | |
enemyPaddle.shape() | |
ball1.drawBall() | |
} | |
function keyPressed (event){ | |
keyCode = event.which | |
if (keyCode==38){ | |
if (playerPaddle.yCoord > 0){ | |
playerPaddle.yCoord = playerPaddle.yCoord - 10 | |
} | |
} | |
else if (keyCode==40){ | |
if (playerPaddle.yCoord < 360){ | |
playerPaddle.yCoord = playerPaddle.yCoord + 10 | |
} | |
} | |
ball1.ballMove() | |
mainLoop() | |
} | |
function isTouching(thePaddle,theBall){ | |
if (thePaddle.top < theBall.bottom && thePaddle.bottom > theBall.top && thePaddle.right > theBall.left && thePaddle.left < theBall.right){ | |
return true | |
} | |
else{ | |
return false | |
} | |
} | |
function Paddle(side){ | |
this.yCoord = 180 | |
if (side === "left"){ | |
this.xCoord = 10 | |
this.shape = function(){ | |
ctx.fillStyle = '#3ac6e5'; | |
ctx.fillRect(this.xCoord,this.yCoord,12,50); | |
this.bounds() | |
} | |
} | |
else if (side === "right") { | |
this.xCoord = 478 | |
this.shape = function(){ | |
ctx.fillStyle = '#EE3B3B'; | |
ctx.fillRect(this.xCoord,this.yCoord,12,50); | |
this.bounds() | |
} | |
} | |
this.bounds = function(){ | |
this.top = this.yCoord | |
this.left = this.xCoord | |
this.bottom = this.yCoord + 50 | |
this.right = this.xCoord + 12 | |
} | |
} | |
function Ball(){ | |
this.xCoord=400 | |
this.yCoord=200 | |
this.xRate=5 | |
this.yRate=5 | |
this.drawBall = function(){ | |
ctx.fillStyle = '#000000' | |
ctx.fillRect(this.xCoord, this.yCoord, 8, 8) | |
this.top = this.yCoord | |
this.left = this.xCoord | |
this.bottom = this.yCoord - 8 | |
this.right = this.xCoord + 8 | |
if (isTouching(playerPaddle,this) === true) { | |
this.ballDirection("left"); | |
} | |
else if (isTouching(enemyPaddle,this) === true) { | |
this.ballDirection("right"); | |
} | |
} | |
this.ballDirection = function(side){ | |
if (side === "left"){ | |
this.xMove = function(){ | |
this.xCoord = this.xCoord + this.xRate | |
} | |
} | |
else if (side === "right"){ | |
this.xMove = function(){ | |
this.xCoord = this.xCoord - this.xRate | |
} | |
} | |
} | |
this.xMove = function(){ | |
this.xCoord = this.xCoord + this.xRate | |
} | |
this.yMove = function(){ | |
} | |
this.ballMove = function(){ | |
this.xMove() | |
this.yMove() | |
} | |
} | |
</script> | |
</head> | |
<body onload="mainLoop()" onkeydown="keyPressed(event)"> | |
<canvas id="c" width="500" height="410" ></canvas> | |
<script type="text/javascript">; | |
var canvas = document.getElementById("c"); | |
var ctx = canvas.getContext("2d") | |
var playerPaddle = new Paddle("left") | |
var enemyPaddle = new Paddle("right") | |
var ball1 = new Ball() | |
</script> | |
</body> | |
</html> |
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