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chrome.html
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<!DOCTYPE html>
<html>
<head>
<title>Tron</title>
</head>
<body>
<style type="text/css">
#canvas {
background-image: url("background2.png");
background-repeat: repeat;
margin: none;
margin-left: 300px;
padding: none;
border-width: 1px;
border-color: "black";
border-style: solid;
}
</style>
<canvas id="canvas" width="640" height="640">Your browser stinks. Go get Firefox or Chrome.</canvas>
<script type="text/javascript">
var canvas = document.getElementById("canvas");
var ctx = canvas.getContext("2d");
var FPS = 12;
var blocks = [
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[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
];
var alerted = false;
var Player1 = {
x: 2,
y: 10,
width: 16,
height: 16,
direction: "right",
color: "red",
alive: true
}
var Player2 = {
x: 36,
y: 10,
width: 16,
height: 16,
direction: "left",
color: "blue",
alive: true
}
function moveDude(player){
switch(player){
case 1:
switch(Player1.direction){
case "right":
Player1.x += 1;
break;
case "left":
Player1.x -= 1;
break;
case "up":
Player1.y -= 1;
break;
case "down":
Player1.y += 1;
break;
}
break;
case 2:
switch(Player2.direction){
case "right":
Player2.x += 1;
break;
case "left":
Player2.x -= 1;
break;
case "up":
Player2.y -= 1;
break;
case "down":
Player2.y += 1;
break;
}
break;
}
}
function draw(){
if(Player1.alive){
//Player1
ctx.fillStyle = Player1.color;
ctx.fillRect(Player1.x*16,Player1.y*16,Player1.width,Player1.height);
}
if(Player2.alive){
//Player2
ctx.fillStyle = Player2.color;
ctx.fillRect(Player2.x*16,Player2.y*16,Player2.width,Player2.height);
}
}
function update(){
if(Player1.alive){
moveDude(1);
}
if(Player2.alive){
moveDude(2);
}
//check for collision
if(blocks[Player1.y][Player1.x] === 1){
Player1.alive = false;
}
if(blocks[Player2.y][Player2.x] === 1){
Player2.alive = false;
}
if(Player1.y === Player2.y && Player1.x === Player2.x){
Player1.alive = false;
Player2.alive = false;
if(!alerted){
alert("Collision!");
alerted = true;
}
}
//update collision positions
blocks[Player1.y][Player1.x] = 1;
blocks[Player2.y][Player2.x] = 1;
//collision detection
if(Player1.x < 0 || Player1.x > 39 || Player1.y > 39 || Player1.y < 0){
Player1.alive = false;
}
if(Player2.x < 0 || Player2.x > 39 || Player2.y > 39 || Player2.y < 0){
Player2.alive = false;
}
}
function tick(){
update();
draw();
}
setInterval(tick,1000/FPS);
document.onkeydown = function read(e){
e = e || window.event;
code = e.keyCode || e.which;
switch(code){
//p2 <^>
case 38:
if(Player2.direction !== "down"){
Player2.direction = "up";
}
break;
case 37:
if(Player2.direction !== "right"){
Player2.direction = "left";
}
break;
case 40:
if(Player2.direction !== "up"){
Player2.direction = "down";
}
break;
case 39:
if(Player2.direction !== "left"){
Player2.direction = "right";
}
break;
//p1 wasd
case 87:
if(Player1.direction !== "down"){
Player1.direction = "up";
}
break;
case 65:
if(Player1.direction !== "right"){
Player1.direction = "left";
}
break;
case 83:
if(Player1.direction !== "up"){
Player1.direction = "down";
}
break;
case 68:
if(Player1.direction !== "left"){
Player1.direction = "right";
}
break;
}
}
</script>
</body>
</html>