Created
June 21, 2024 19:04
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JS Snake Game
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <title>Snake Game</title> | |
| <style> | |
| body { | |
| display: flex; | |
| justify-content: center; | |
| align-items: center; | |
| height: 100vh; | |
| margin: 0; | |
| background-color: #000; | |
| } | |
| canvas { | |
| border: 1px solid #fff; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <canvas id="gameCanvas" width="400" height="400"></canvas> | |
| <script src="snake.js"></script> | |
| </body> | |
| </html> |
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| const canvas = document.getElementById('gameCanvas'); | |
| const ctx = canvas.getContext('2d'); | |
| const gridSize = 20; | |
| const tileCount = canvas.width / gridSize; | |
| let snake = [{ x: 10, y: 10 }]; | |
| let velocity = { x: 0, y: 0 }; | |
| let food = { x: 15, y: 15 }; | |
| let gameOver = false; | |
| function drawGame() { | |
| if (gameOver) { | |
| ctx.fillStyle = 'red'; | |
| ctx.font = '50px Arial'; | |
| ctx.fillText('Game Over', canvas.width / 4, canvas.height / 2); | |
| return; | |
| } | |
| setTimeout(drawGame, 10); | |
| ctx.fillStyle = 'black'; | |
| ctx.fillRect(0, 0, canvas.width, canvas.height); | |
| moveSnake(); | |
| checkCollision(); | |
| drawSnake(); | |
| drawFood(); | |
| } | |
| function moveSnake() { | |
| const head = { x: snake[0].x + velocity.x, y: snake[0].y + velocity.y }; | |
| snake.unshift(head); | |
| if (head.x === food.x && head.y === food.y) { | |
| food = { | |
| x: Math.floor(Math.random() * tileCount), | |
| y: Math.floor(Math.random() * tileCount) | |
| }; | |
| } else { | |
| snake.pop(); | |
| } | |
| } | |
| function checkCollision() { | |
| const head = snake[0]; | |
| if (head.x < 0 || head.x >= tileCount || head.y < 0 || head.y >= tileCount) { | |
| gameOver = true; | |
| } | |
| for (let i = 1; i < snake.length; i++) { | |
| if (snake[i].x === head.x && snake[i].y === head.y) { | |
| gameOver = true; | |
| } | |
| } | |
| } | |
| function drawSnake() { | |
| ctx.fillStyle = 'lime'; | |
| for (let part of snake) { | |
| ctx.fillRect(part.x * gridSize, part.y * gridSize, gridSize, gridSize); | |
| } | |
| } | |
| function drawFood() { | |
| ctx.fillStyle = 'red'; | |
| ctx.fillRect(food.x * gridSize, food.y * gridSize, gridSize, gridSize); | |
| } | |
| document.addEventListener('keydown', event => { | |
| switch (event.key) { | |
| case 'ArrowUp': | |
| if (velocity.y === 0) { | |
| velocity = { x: 0, y: -1 }; | |
| } | |
| break; | |
| case 'ArrowDown': | |
| if (velocity.y === 0) { | |
| velocity = { x: 0, y: 1 }; | |
| } | |
| break; | |
| case 'ArrowLeft': | |
| if (velocity.x === 0) { | |
| velocity = { x: -1, y: 0 }; | |
| } | |
| break; | |
| case 'ArrowRight': | |
| if (velocity.x === 0) { | |
| velocity = { x: 1, y: 0 }; | |
| } | |
| break; | |
| } | |
| }); | |
| drawGame(); |
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