Tron/fourplayer.html at master · Graeme22/Tron · GitHub

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<!DOCTYPE html>
<html>
	<head>
		<title>Tron</title>
	</head>
	<body>
		<style type="text/css">
			#canvas {
				background-image: url("background.png");
				background-repeat: repeat;
				margin: none;
				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 = 10;
			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]
			];
			var Player1 = {
				x: 1,
				y: 2,
				width: 16,
				height: 16,
				direction: "right",
				color: "red",
				alive: true
			}
			var Player2 = {
				x: 37,
				y: 1,
				width: 16,
				height: 16,
				direction: "down",
				color: "blue",
				alive: true
			}
			var Player3 = {
				x: 38,
				y: 37,
				width: 16,
				height: 16,
				direction: "left",
				color: "green",
				alive: true
			}
			var Player4 = {
				x: 2,
				y: 38,
				width: 16,
				height: 16,
				direction: "up",
				color: "yellow",
				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;
					case 3:
						switch(Player3.direction){
							case "right":
								Player3.x += 1;
								break;
							case "left":
								Player3.x -= 1;
								break;
							case "up":
								Player3.y -= 1;
								break;
							case "down":
								Player3.y += 1;
								break;
						}
						break;
					case 4:
						switch(Player4.direction){
							case "right":
								Player4.x += 1;
								break;
							case "left":
								Player4.x -= 1;
								break;
							case "up":
								Player4.y -= 1;
								break;
							case "down":
								Player4.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);
				}
				if(Player3.alive){
					//Player2
					ctx.fillStyle = Player3.color;
					ctx.fillRect(Player3.x*16,Player3.y*16,Player3.width,Player3.height);
				}
				if(Player4.alive){
					//Player2
					ctx.fillStyle = Player4.color;
					ctx.fillRect(Player4.x*16,Player4.y*16,Player4.width,Player4.height);
				}
			}
			function update(){
				if(Player1.alive){
					moveDude(1);
				}
				if(Player2.alive){
					moveDude(2);
				}
				if(Player3.alive){
					moveDude(3);
				}
				if(Player4.alive){
					moveDude(4);
				}
				//check for collision
				if(blocks[Player1.y][Player1.x] === 1){
					Player1.alive = false;
				}
				if(blocks[Player2.y][Player2.x] === 1){
					Player2.alive = false;
				}
				if(blocks[Player3.y][Player3.x] === 1){
					Player3.alive = false;
				}
				if(blocks[Player4.y][Player4.x] === 1){
					Player4.alive = false;
				}
				//update collision positions
				blocks[Player1.y][Player1.x] = 1;
				blocks[Player2.y][Player2.x] = 1;
				blocks[Player3.y][Player3.x] = 1;
				blocks[Player4.y][Player4.x] = 1;
				//collision detection
				if(Player1.x <= -1 || Player1.x >= 40 || Player1.y >= 40 || Player1.y <= -1){
					Player1.alive = false;
				}
				if(Player2.x <= -1 || Player2.x >= 40 || Player2.y >= 40 || Player2.y <= -1){
					Player2.alive = false;
				}
				if(Player3.x <= -1 || Player3.x >= 40 || Player3.y >= 40 || Player3.y <= -1){
					Player3.alive = false;
				}
				if(Player4.x <= -1 || Player4.x >= 40 || Player4.y >= 40 || Player4.y <= -1){
					Player4.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;
					//p3 ijkl
					case 73:
						if(Player3.direction !== "down"){
							Player3.direction = "up";
						}
						break;
					case 74:
						if(Player3.direction !== "right"){
							Player3.direction = "left";
						}
						break;
					case 75:
						if(Player3.direction !== "up"){
							Player3.direction = "down";
						}
						break;
					case 76:
						if(Player3.direction !== "left"){
							Player3.direction = "right";
						}
						break;
					//p4 8456
					case 104:
						if(Player4.direction !== "down"){
							Player4.direction = "up";
						}
						break;
					case 100:
						if(Player4.direction !== "right"){
							Player4.direction = "left";
						}
						break;
					case 101:
						if(Player4.direction !== "up"){
							Player4.direction = "down";
						}
						break;
					case 102:
						if(Player4.direction !== "left"){
							Player4.direction = "right";
						}
						break;
				}
			}
		</script>
	</body>
</html>