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Shooting Game
Developer User8772｜Date and time 23/10/5 22:44:39
Build time 27.844 sec｜Game capacity 4.073KB｜

Script

Score: 0

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

<!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>
    html, body {
      height: 100%;
      margin: 0;
      padding: 0;
    }
    #game-canvas {
      display: block;
      margin: 0 auto;
      background-color: lightgray;
    }
    #score {
      text-align: center;
      margin-top: 20px;
    }
  </style>
</head>
<body>
  <canvas id="game-canvas" width="400" height="600"></canvas>
  <div id="score">
    <h2>Score: <span id="score-value">0</span></h2>
  </div>
  <script>
    // Game variables
    var canvas = document.getElementById("game-canvas");
    var context = canvas.getContext("2d");
    var scoreElement = document.getElementById("score-value");
    var score = 0;
    var gameInterval;
    
    // Player object
    var player = {
      x: canvas.width / 2,
      y: canvas.height - 50,
      width: 50,
      height: 50,
      color: "blue",
      draw: function() {
        context.fillStyle = this.color;
        context.fillRect(this.x, this.y, this.width, this.height);
      }
    };
    
    // Bullet object
    var bullet = {
      x: canvas.width / 2,
      y: player.y,
      width: 10,
      height: 20,
      color: "red",
      speed: 5,
      isFired: false,
      fire: function() {
        if (!this.isFired) {
          this.x = player.x + player.width / 2 - this.width / 2;
          this.isFired = true;
        }
      },
      update: function() {
        if (this.isFired) {
          this.y -= this.speed;
          if (this.y < 0) {
            this.isFired = false;
          }
        }
      },
      draw: function() {
        context.fillStyle = this.color;
        context.fillRect(this.x, this.y, this.width, this.height);
      }
    };
    
    // Enemy object
    var enemy = {
      x: Math.random() * (canvas.width - 50),
      y: 0,
      width: 50,
      height: 50,
      color: "green",
      speed: 2,
      update: function() {
        this.y += this.speed;
        if (this.y > canvas.height) {
          this.x = Math.random() * (canvas.width - 50);
          this.y = 0;
          score++;
          scoreElement.textContent = score;
        }
      },
      draw: function() {
        context.fillStyle = this.color;
        context.fillRect(this.x, this.y, this.width, this.height);
      }
    };
    
    // Handle player movement
    function movePlayer(event) {
      var key = event.keyCode;
      if (key === 37 && player.x > 0) { // LEFT
        player.x -= 5;
      }
      if (key === 39 && player.x + player.width < canvas.width) { // RIGHT
        player.x += 5;
      }
      if (key === 32) { // SPACE (Shoot)
        bullet.fire();
      }
    }
    
    // Game loop
    function gameLoop() {
      context.clearRect(0, 0, canvas.width, canvas.height);
      
      player.draw();
      bullet.update();
      bullet.draw();
      
      enemy.update();
      enemy.draw();
      
      if (isColliding(player, enemy)) {
        clearInterval(gameInterval);
        alert("Game Over! Your Score: " + score);
        window.location.reload();
      }
      
      if (isColliding(bullet, enemy)) {
        score++;
        scoreElement.textContent = score;
        bullet.isFired = false;
        enemy.x = Math.random() * (canvas.width - 50);
        enemy.y = 0;
      }
    }
    
    // Check collision between two objects using axis-aligned bounding box (AABB)
    function isColliding(obj1, obj2) {
      return obj1.x < obj2.x + obj2.width &&
             obj1.x + obj1.width > obj2.x &&
             obj1.y < obj2.y + obj2.height &&
             obj1.y + obj1.height > obj2.y;
    }
    
    // Start the game
    function startGame() {
      gameInterval = setInterval(gameLoop, 16);
      window.addEventListener("keydown", movePlayer);
    }
    
    startGame();
  </script>
</body>
</html>