Building Real-Time Hitboxes & Collision Systems

Collision systems are the backbone of real-time game mechanics. Whether detecting bullet hits, player movement, enemy interactions, or room transitions — precision and speed determine how responsive a game feels.

1. Axis-Aligned Bounding Boxes (AABB)

AABBs are the most common hitbox format in HTML5 games. They use simple rectangle overlap logic:

function collides(a,b){
 return !(a.x+a.w < b.x ||
          a.x > b.x+b.w ||
          a.y+a.h < b.y ||
          a.y > b.y+b.h);
}

This check is extremely fast — ideal for mobile and browser games.

2. Pixel-Perfect Collisions

For neon games, pixel-perfect collisions are rarely required. They are expensive because they involve reading pixel buffers via Canvas or WebGL.

3. Spatial Partitioning

High-object scenes often use spatial partitioning structures:

• Quadtrees
• Uniform grids
• Binary space partitioning (BSP)

These reduce collision checks from thousands to just a few dozen per frame.

4. Hitbox Variants

• Circle hitboxes → smooth for rotation
• Polygon hitboxes → for irregular models
• Hybrid hitboxes → combine multiple shapes

Conclusion

Building fast collision systems requires a balance of math, performance, and gameplay feel. Neon Mini Game Hub uses optimized AABBs, spatial partitioning, and simplified hit regions to deliver responsive gameplay across devices.