How does collision detection work in a 2D physics engine?

How does collision detection work in a 2D physics engine?

Collision detection in a 2D physics engine involves checking if two objects intersect or come into contact. This is typically done using bounding boxes or shapes like circles and polygons.

What are the common algorithms used for collision detection?

Common algorithms include Axis-Aligned Bounding Box (AABB), Separating Axis Theorem (SAT), and spatial partitioning methods like Quadtrees.

Can you explain the Separating Axis Theorem?

The Separating Axis Theorem states that two convex shapes do not collide if there exists a line (axis) on which their projections do not overlap. This is a fundamental concept in collision detection.

How do I implement AABB collision detection in C++?

To implement AABB collision detection in C++, you check if the x and y coordinates of the two rectangles overlap. If they do, a collision has occurred.