How do I create a physics engine in C++ for my game?

How do I create a physics engine in C++ for my game?

Creating a physics engine in C++ involves understanding the basics of physics simulation, such as collision detection and response, rigid body dynamics, and forces. You can start by implementing simple shapes and gradually add complexity.

What libraries can I use to help with physics simulation?

You can use libraries like Box2D for 2D physics or Bullet Physics for 3D physics. These libraries provide robust tools for collision detection and physics calculations.

Can you explain collision detection in more detail?

Collision detection can be done using various algorithms like Axis-Aligned Bounding Box (AABB) or Separating Axis Theorem (SAT). AABB is simpler and faster for rectangular shapes, while SAT is more accurate for complex shapes.

How do I optimize the physics calculations for performance?

To optimize physics calculations, you can use techniques like spatial partitioning (e.g., quad-trees or octrees), broad-phase collision detection to reduce the number of checks, and limiting the frequency of physics updates.