🎯 Pygame + Pymunk Collision Lab — tweak mass & speed, watch the physics happen

This content originally appeared on DEV Community and was authored by Joseph Sen

I built a small 2D collision sandbox to visualize elastic collisions using Pygame for rendering and Pymunk (Chipmunk2D) for physics. A tiny Tkinter launcher lets you set the initial speeds and masses of two balls. The app then displays each ball’s live speed and the post‑collision speeds captured via a Pymunk post_solve callback.

Demo highlights

🧪 Set speed & mass for both balls before the sim starts (Tkinter dialog).

⚙️ Real‑time physics with elasticity and friction; damping for subtle energy loss.

📊 On‑screen HUD: current speed (px/s) for each ball + speeds right after impact.

🧱 Static wall segments on both sides to keep objects in view.

🟢🟥 Color‑coded bodies: Green vs. Red.

This content originally appeared on DEV Community and was authored by Joseph Sen

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Joseph Sen | Sciencx (2025-07-27T15:12:02+00:00) 🎯 Pygame + Pymunk Collision Lab — tweak mass & speed, watch the physics happen. Retrieved from https://www.scien.cx/2025/07/27/%f0%9f%8e%af-pygame-pymunk-collision-lab-tweak-mass-speed-watch-the-physics-happen/

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" » 🎯 Pygame + Pymunk Collision Lab — tweak mass & speed, watch the physics happen." Joseph Sen | Sciencx - Sunday July 27, 2025, https://www.scien.cx/2025/07/27/%f0%9f%8e%af-pygame-pymunk-collision-lab-tweak-mass-speed-watch-the-physics-happen/

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IEEE

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» 🎯 Pygame + Pymunk Collision Lab — tweak mass & speed, watch the physics happen | Joseph Sen | Sciencx | https://www.scien.cx/2025/07/27/%f0%9f%8e%af-pygame-pymunk-collision-lab-tweak-mass-speed-watch-the-physics-happen/ |

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