Java 2D Space Shooter Game

A classic 2D space shooter game built with Java Swing, featuring smooth gameplay, particle effects, and sound effects.

🎮 Game Overview

This is a 2D space shooter game where you control a spaceship and fight against enemy rockets. The game features:

• Smooth 60 FPS gameplay with optimized rendering
• Realistic physics with momentum and collision detection
• Particle explosion effects with alpha blending
• Sound effects for shooting, hits, and explosions
• Health system with visual HP bars
• Score tracking system

🎯 Gameplay Features

Controls

• A/D Keys: Rotate spaceship left/right
• Space: Accelerate forward
• J Key: Fire small bullets (rapid fire)
• K Key: Fire large bullets (powerful shots)
• Enter: Restart game after game over

Game Mechanics

• Player Ship: 50 HP, can be destroyed by enemy rockets
• Enemy Rockets: Spawn every 3 seconds from both sides, 20 HP each
• Bullets: Two types - small (5 damage) and large (20 damage)
• Collision Detection: Precise shape-based collision using Java Area class
• Explosion Effects: Multi-layered particle effects with different colors and sizes

🏗️ Project Structure

├── Main.java              # Main game window and initialization
├── PanelGame.java         # Core game logic, rendering, and game loop
├── Player.java            # Player spaceship with movement and shooting
├── Rocket.java            # Enemy rocket AI and behavior
├── Bullet.java            # Projectile system for both player and enemies
├── Effect.java            # Particle explosion effects
├── HP.java                # Health point system
├── HpRender.java          # Health bar rendering
├── Key.java               # Keyboard input handling
├── ModelBoom.java         # Explosion particle model
├── Sound.java             # Audio system for game sounds
├── shoot.wav              # Shooting sound effect
├── hit.wav                # Hit sound effect
└── destroy.wav            # Destruction sound effect

🚀 Technical Features

Graphics & Rendering

• Double buffering for smooth animation
• Anti-aliasing for crisp graphics
• Affine transformations for sprite rotation
• Alpha compositing for particle effects
• Custom shape collision detection

Game Engine

• Multi-threaded architecture with separate threads for:
  • Main game loop (60 FPS)
  • Keyboard input handling
  • Bullet physics
  • Enemy spawning
• Frame rate limiting to maintain consistent 60 FPS
• Memory management with automatic cleanup of off-screen objects

Audio System

• Java Sound API integration
• Non-blocking audio playback
• Multiple sound channels for different game events

🎨 Visual Effects

The game features sophisticated particle effects:

• Multi-layered explosions with different particle sizes
• Color-coded effects (yellow, cyan, red, white particles)
• Alpha fading for realistic explosion dissipation
• Randomized particle distribution for natural-looking effects

🎵 Audio Design

Three distinct sound effects enhance the gameplay:

• Shoot Sound: Triggered when firing bullets
• Hit Sound: Played when bullets hit enemies
• Destroy Sound: Played when enemies or player are destroyed

🛠️ Requirements

• Java 8+ (uses modern Java features)
• Java Swing (included in JDK)
• Java Sound API (included in JDK)

🚀 How to Run

1. Compile the project:

   javac *.java

2. Run the game:

   java Main

3. Enjoy the game! Use the controls above to play.

🎯 Game Objectives

• Survive as long as possible against waves of enemy rockets
• Score points by destroying enemy rockets
• Avoid collisions with enemy rockets to maintain your health
• Use strategy - small bullets for rapid fire, large bullets for powerful shots

🔧 Development Notes

This project demonstrates several advanced Java programming concepts:

• Object-oriented design with proper inheritance and encapsulation
• Game loop architecture with frame rate control
• Multi-threading for responsive gameplay
• Graphics programming with Java 2D API
• Audio programming with Java Sound API
• Mathematical calculations for physics and collision detection

📝 License

This project is open source and available for educational purposes.