Developers following the Pyxel tutorial now add collision logic to their space shooter. The update introduces an intersects() method on the BaseSprite class, using a simple axis‑aligned bounding‑box check. When a bullet’s rectangle overlaps an asteroid’s, the method returns true, otherwise false.

This change sits in *sprite.py* and keeps the rest of the engine untouched. During the bullet update loop, the game iterates in reverse to safely remove items. If a collision is detected, the score increments, the bullet and asteroid are dropped from their lists, and the loop exits early.

The logic lives in *main.py* inside the Game.update() method. By handling removal this way, the code avoids index errors that would otherwise crash the loop. Running the updated program shows a scrolling ship, falling asteroids, and a score counter that rises as bullets hit.

The GIF in the article demonstrates the effect. The next installment promises a game over check, completing the classic arcade loop. Readers can now test the collision code locally and tweak the AABB thresholds for tighter hits.