Pong Clone

About the Game

A Pong clone built in Unity - but with a twist: every single movement, bounce and calculation in the game runs through a custom vector mathematics library written from scratch in C++, compiled as a DLL, and plugged directly into Unity. Unity's built-in math was never used.

Built as a solo assignment at Forsbergs Skola to understand how game engines handle mathematics internally.

The Vector Math Library

• Full Vec2 and Vec3 implementations written in C++
• Operations: Add, Subtract, Scale, Magnitude, Normalize, Dot, Cross, Lerp, Slerp, Reflect, Project, MoveTowards, ClampMagnitude
• C++ to C# interop via DllImport and StructLayout(LayoutKind.Sequential)
• Performance benchmarks comparing the custom DLL against Unity's built-in vectors
• Unit tests for every function including edge cases

Gameplay Features

• Classic Pong mechanics - first to 5 points wins
• Score tracking for both players with win message display
• R key to restart at any time

Controls

• Player 1: W / S — Move paddle up / down
• Player 2: ↑ / ↓ — Move paddle up / down
• R — Restart

Development

Solo project - Forsbergs Skola Game Programming course. The goal was not to build a complex game but to understand the mathematics that power every game engine — and prove it by building those systems from the ground up.