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<!doctype html>
<html lang="en">
<head>
<title>Snake</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="stylesheet" type="text/css" href="/css/styles.css">
</head>
<body>
<center>
<canvas width="400" height="600" id="canvas"></canvas>
</center>
<script>
var gameInterval;
window.onload = function () {
canvas = document.getElementById("canvas");
ctx = canvas.getContext("2d");
// canvas.height = 300;
// canvas.width = 400;
document.addEventListener("keydown", keyPush);
document.addEventListener("mousedown", mousePush);
gameInterval = setInterval(game, 1000 / 10);
}
var tileCountWidth = 40;
var tileCountHeight = 40;
var tileWidth = 10//canvas.width / tileCountWidth;
var tileHeight = 10//canvas.height / tileCountHeight;
var snake = [];
var x = randomInt(tileWidth);
var y = randomInt(tileHeight);
var vx = 1;
var vy = 0;
var score = 0;
var t = 0;
var apple = {};
var isGameOver = false;
var mouseX =0;
var mouseY = 0;
console.log(apple);
setRandomCoords(apple);
console.log(apple);
var length = 5;
function game() {
update();
draw();
}
function draw(){
color("black");
ctx.fillRect(0, 0, canvas.width, canvas.height);
color("white");
ctx.fillRect(0, 400, 400, 410);
for (var i = 0; i < snake.length; i++) {
ctx.fillRect(snake[i].x * tileWidth, snake[i].y * tileHeight, tileWidth, tileHeight);
}
color("red");
ctx.fillRect(apple.x * tileWidth, apple.y * tileHeight, tileWidth, tileHeight);
font(20);
color("black");
ctx.fillText("Score: "+score,20,450);
ctx.fillText(mouseX + " " + mouseY, 20, 500);
color("orange");
// ctx.fillRect(210, 410, 390, 590)
ctx.beginPath();
ctx.arc(300, 500, 95, 0, 2 * Math.PI);
ctx.stroke();
color("black");
ctx.beginPath();
ctx.moveTo(210, 410);
ctx.lineTo(390, 590);
ctx.moveTo(390, 410);
ctx.lineTo(210, 590);
ctx.stroke();
if(isGameOver){
color("red");
font(20);
ctx.fillText("Game over!",180,200);
}
}
function update(){
t++;
x += vx;
y += vy;
if (x < 0 || x >= tileCountWidth || y < 0 || y >= tileCountHeight)
gameOver();
// if(snake.some((piece) => {return piece.x = x && piece.y == y;})){
// gameOver();
// }
snake.push({ "x": x, "y": y });
if (x == apple.x && y == apple.y) {
length++;
setRandomCoords(apple);
score += 10 + max(50-t, 0)
t = 0;
}
while (snake.length > length) {
snake.shift();
}
}
function max(a, b){
return a > b ? a : b;
}
function keyPush(e) {
switch (e.keyCode) {
case 37:
vx = -1;
vy = 0;
break;
case 38:
vx = 0;
vy = -1;
break;
case 39:
vx = 1;
vy = 0;
break;
case 40:
vx = 0;
vy = 1;
break;
}
}
function mousePush(e){
mouseX = e.clientX - 420;
mouseY = e.clientY - 510;
console.log(mouseX, mouseY);
if(Math.sqrt(mouseX*mouseX+mouseY*mouseY) > 95){
return;
}
if(Math.abs(mouseX) > Math.abs(mouseY)){
if(mouseX < 0){
vx = -1;
vy = 0;
} else{
vx = 1;
vy = 0;
}
} else {
if(mouseY < 0){
vx = 0;
vy = -1;
} else{
vx = 0;
vy = 1;
}
}
}
function setRandomCoords(item) {
item.x = randomInt(tileCountWidth);
item.y = randomInt(tileCountHeight);
}
function randomInt(max) {
return Math.floor(Math.random() * max);
}
function font(size) {
ctx.font = size + "px Courier";
}
function color(c) {
ctx.fillStyle = c;
}
function gameOver(){
isGameOver = true;
clearInterval(gameInterval);
}
</script>
</body>
</html>
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