const canvas = document.getElementById('canvas'); const ctx = canvas.getContext('2d'); const player = { x: 175, y: 360, width: 50, height: 30, speed: 5 }; const bullets = []; const enemies = []; let score = 0; let gameover = false; function drawPlayer() { ctx.fillStyle = 'white'; ctx.fillRect(player.x, player.y, player.width, player.height); } function drawBullets() { ctx.fillStyle = 'white'; for (let i = 0; i < bullets.length; i++) { ctx.fillRect(bullets[i].x, bullets[i].y, 2, 5); } } function drawEnemies() { ctx.fillStyle = 'white'; for (let i = 0; i < enemies.length; i++) { ctx.fillRect(enemies[i].x, enemies[i].y, 30, 30); } } function moveBullets() { for (let i = 0; i < bullets.length; i++) { bullets[i].y -= 5; if (bullets[i].y < 0) { bullets.splice(i, 1); i--; } } } function moveEnemies() { for (let i = 0; i < enemies.length; i++) { enemies[i].y += 2; if (enemies[i].y > 400) { gameover = true; } } } function detectCollisions() { for (let i = 0; i < bullets.length; i++) { for (let j = 0; j < enemies.length; j++) { if (bullets[i].x > enemies[j].x && bullets[i].x < enemies[j].x + 30 && bullets[i].y > enemies[j].y && bullets[i].y < enemies[j].y + 30) { bullets.splice(i, 1); i--; enemies.splice(j, 1); j--; score++; } } } } function drawScore() { ctx.fillStyle = 'white'; ctx.font = '20px Arial'; ctx.fillText('Score: ' + score, 10, 25); } function drawGameOver() { ctx.fillStyle = 'white'; ctx.font = '30px Arial'; ctx.fillText('Game Over', 120, 200); } function gameLoop() { if (!gameover) { ctx.clearRect(0, 0, canvas.width, canvas.height); drawPlayer(); drawBullets(); drawEnemies(); moveBullets(); moveEnemies(); detectCollisions(); drawScore(); setTimeout(gameLoop, 20); } else { drawGameOver(); } } document.addEventListener('keydown', function(event) { if (event.keyCode === 37) { player.x -= player.speed; } else if (event.keyCode === 39) { player.x += player.speed; } else if (event.keyCode === 32) { bullets.push({ x: player.x + player.width / 2, y: player.y }); } }); for (let i = 0; i < 8; i++) { for (let j = 0; j < 4; j++) { enemies.push({ x: i * 50 + 50, y: j * 50 + 30 }); } } gameLoop();

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