Game-Developments

2D Game Collision Detection: Algorithms & Techniques

Understanding Collision Detection in 2D Game Development

Collision detection determines when objects in a game world interact, enabling realistic and intuitive gameplay.

This article provides a basic introduction to common 2D collision detection algorithms, focusing on widely used, easy-to-understand techniques such as bounding volumes and simple shape tests. It outlines their advantages, disadvantages, and general implementation considerations.

More advanced approaches—including broad-phase optimizations, spatial partitioning, continuous collision detection, and algorithms like GJK or BVH—are intentionally out of scope for this article and may be explored in future, more in-depth discussions.