Building a Platform Game in JavaScript with PixiJS - Part 3

In the previous parts, we have created game assets, setup game components and introduced state management. In this part we will develop collision detection, an essential part of most games. Since our game objects can be approximated with rectangles (bounding boxes) of edges parallel to the Cartesian coordinate axes (they are axis-aligned), therefore we can use AABB (axis-aligned bounding box) checks.