Physics 2D

A simple 2D physics engine built from scratch in C++ with SDL2.

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Controls

Input	Action
1	Pyramid scene
2	Sandbox scene
R	Reset current scene
Left-click, drag, and release	Spawn and throw a shape
Right-click, drag, and release	Launch a heavy cannonball

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Build

Requirements: CMake 3.20+, SDL2, clang (macOS) or gcc (Linux)

brew install cmake sdl2

git clone https://github.com/osteph32/physics2d
cd physics2d
cmake -B build -DCMAKE_BUILD_TYPE=Release
cmake --build build
./build/physics2d

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References

• Allen Chou — Game Physics
• Randy Gaul — Impulse Engine
• Erin Catto — Box2D Lite