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Add files via upload #13

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132 changes: 132 additions & 0 deletions 大作业.html
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Original file line number Diff line number Diff line change
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<!DOCTYPE html>
<html>
<head>
<style>
#game-board {
margin: 0 auto;
border: 1px solid black;
display: grid;
grid-template-columns: repeat(20, 20px);
}

.cell {
width: 20px;
height: 20px;
background-color: #ebe8bd;
border: 1px solid rgb(15, 13, 7);
}

.snake {
background-color: #5bbea7;
}

.food {
background-color: rgba(239, 12, 12, 0.253);
}
</style>
</head>
<body>
<div id="game-board"></div>

<script>
var gridSize = 20;
var gridCount =20;
var snake = [{x: 10, y: 10}];
var food = {x: 15, y: 10};
var direction = 'right';

var gameBoard = document.getElementById('game-board');

function updateGameBoard() {
for (var y = 0; y < gridCount; y++) {
for (var x = 0; x < gridCount; x++) {
var cell = document.createElement('div');
cell.className = 'cell';

var isSnake = false;
for (var i = 0; i < snake.length; i++) {
if (snake[i].x === x && snake[i].y === y) {
isSnake = true;
}
}
if (x === food.x && y === food.y) {
cell.classList.add('food');
} else if (isSnake) {
cell.classList.add('snake');
}

gameBoard.appendChild(cell);
}
}
}

function clearGameBoard() {
while (gameBoard.firstChild) {
gameBoard.removeChild(gameBoard.firstChild);
}
}

function moveSnake() {
var head = {x: snake[0].x, y: snake[0].y};
if (direction === 'up') {
head.y--;
} else if (direction === 'down') {
head.y++;
} else if (direction === 'left') {
head.x--;
} else if (direction === 'right') {
head.x++;
}

snake.unshift(head);

if (head.x === food.x && head.y === food.y) {
generateFood();
} else {
snake.pop();
}
}

function generateFood() {
var x, y;
do {
x = Math.floor(Math.random() * gridCount);
y = Math.floor(Math.random() * gridCount);
} while (checkCollision(x, y));

food.x = x;
food.y = y;
}

function checkCollision(x, y) {
for (var i = 0; i < snake.length; i++) {
if (x === snake[i].x && y === snake[i].y) {
return true;
}
}
return false;
}

document.addEventListener('keydown', function(event) {
if ((event.keyCode === 37 || event.keyCode === 65) && direction !== 'right') {
direction = 'left';
} else if ((event.keyCode === 38 || event.keyCode === 87) && direction !== 'down') {
direction = 'up';
} else if ((event.keyCode === 39 || event.keyCode === 68) && direction !== 'left') {
direction = 'right';
} else if ((event.keyCode === 40 || event.keyCode === 83) && direction !== 'up') {
direction = 'down';
}
});

function gameLoop() {
clearGameBoard();
updateGameBoard();
moveSnake();
setTimeout(gameLoop, 200);
}

gameLoop();
</script>
</body>
</html>