Wrap Up

You now have a small but capable 2D game engine and a complete game built on top of it.

What you built

• Core engine loop and timing
• Input handling, entities, and collisions
• UI overlays and state management
• Asset loading, audio, particles, and camera
• Event‑driven effects and wave systems
• System‑based architecture for scalability

Where to go next

• Add save/load for high scores.
• Improve enemy AI and behaviors.
• Add new weapons, upgrades, or power‑ups.
• Explore spatial partitioning for faster collisions.
• Port the renderer to WebGL.

Thanks for building along!