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Shooting Game
Developer User19366｜Date and time 24/2/17 22:53:48
Build time 5.847 sec｜Game capacity 1.75KB｜

Script

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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>Shooting Game</title>
<style>
  canvas {
    border: 2px solid black;
    display: block;
    margin: 0 auto;
  }
</style>
</head>
<body>
<canvas id="gameCanvas" width="400" height="400"></canvas>
<script>
  const canvas = document.getElementById("gameCanvas");
  const ctx = canvas.getContext("2d");

let playerX = 200;
  let playerY = 350;
  let isShooting = false;
  let bullets = [];

function drawPlayer() {
    ctx.fillStyle = "blue";
    ctx.fillRect(playerX, playerY, 20, 20);
  }

function drawBullets() {
    ctx.fillStyle = "red";
    bullets.forEach(bullet => {
      ctx.fillRect(bullet.x, bullet.y, 5, 10);
    });
  }

function updateBullets() {
    bullets = bullets.filter(bullet => bullet.y > 0);
    bullets.forEach(bullet => {
      bullet.y -= 5;
    });
  }

function shoot() {
    bullets.push({x: playerX + 8, y: playerY});
  }

function keyUpHandler(event) {
    if (event.key === " ") {
      isShooting = false;
    }
  }

function gameLoop() {
    ctx.clearRect(0, 0, canvas.width, canvas.height);
    drawPlayer();
    
    if (isShooting) {
      shoot();
    }
    
    drawBullets();
    updateBullets();
    
    requestAnimationFrame(gameLoop);
  }

document.addEventListener("keydown", keyDownHandler);
  document.addEventListener("keyup", keyUpHandler);
  
  gameLoop();
</script>
</body>
</html>