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No:46824

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Snake Game
Developer User20255｜Date and time 24/2/26 6:02:46
Build time 11.49 sec｜Game capacity 3.434KB｜

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Click here for free DL of the app version that can save data.

<!DOCTYPE html>
<html>
<head>
    <title>Snake Game</title>
</head>
<body>
    <canvas id="gameCanvas" width="400" height="400"></canvas>
    <script>
        const canvas = document.getElementById('gameCanvas');
        const ctx = canvas.getContext('2d');
        
        const tileSize = 20;
        
        const snake = {
            x: 10 * tileSize,
            y: 10 * tileSize,
            dx: 0,
            dy: 0,
            cells: [{x: 10 * tileSize, y: 10 * tileSize}],
            maxSize: 4
        };
        
        let food = {
            x: Math.floor(Math.random() * (canvas.width / tileSize)) * tileSize,
            y: Math.floor(Math.random() * (canvas.height / tileSize)) * tileSize
        };
        
        function drawSnake() {
            ctx.fillStyle = 'green';
            snake.cells.forEach(cell => {
                ctx.fillRect(cell.x, cell.y, tileSize, tileSize);
            });
        }
        
        function moveSnake() {
            const head = {x: snake.x, y: snake.y};
            snake.cells.unshift(head);
            if (snake.cells.length > snake.maxSize) {
                snake.cells.pop();
            }
            snake.x += snake.dx;
            snake.y += snake.dy;
        }
        
        function drawFood() {
            ctx.fillStyle = 'red';
            ctx.fillRect(food.x, food.y, tileSize, tileSize);
        }
        
        function checkCollision() {
            if (snake.x < 0 || snake.x >= canvas.width || snake.y < 0 || snake.y >= canvas.height) {
                return true;
            }
            for (let i = 1; i < snake.cells.length; i++) {
                if (snake.cells[i].x === snake.x && snake.cells[i].y === snake.y) {
                    return true;
                }
            }
            return false;
        }
        
        function checkFoodCollision() {
            if (snake.x === food.x && snake.y === food.y) {
                snake.maxSize++;
                food = {
                    x: Math.floor(Math.random() * (canvas.width / tileSize)) * tileSize,
                    y: Math.floor(Math.random() * (canvas.height / tileSize)) * tileSize
                };
            }
        }
        
        function gameLoop() {
            ctx.clearRect(0, 0, canvas.width, canvas.height);
            moveSnake();
            drawFood();
            drawSnake();
            if (checkCollision()) {
                alert('Game Over!');
                snake.x = 10 * tileSize;
                snake.y = 10 * tileSize;
                snake.cells = [{x: 10 * tileSize, y: 10 * tileSize}];
                snake.maxSize = 4;
            }
            checkFoodCollision();
            setTimeout(gameLoop, 100);
        }
        
        document.addEventListener('keydown', e => {
            if (e.key === 'ArrowUp' && snake.dy === 0) {
                snake.dx = 0;
                snake.dy = -tileSize;
            }
            if (e.key === 'ArrowDown' && snake.dy === 0) {
                snake.dx = 0;
                snake.dy = tileSize;
            }
            if (e.key === 'ArrowLeft' && snake.dx === 0) {
                snake.dx = -tileSize;
                snake.dy = 0;
            }
            if (e.key === 'ArrowRight' && snake.dx === 0) {
                snake.dx = tileSize;
                snake.dy = 0;
            }
        });
        
        gameLoop();
    </script>
</body>
</html>