Raycasting Engine

C++ DDA Algorithm Operator Overloading Vector Maths Game loop design CMake Technical Research Debugging

Learned C++ from scratch (coming from Python and Java)
Built a software raycasting engine in raylib, researching the theory from tutorials by Lodev and F. Permadi before implementing it.
Designed the algorithm with a flowchart first
Wrote a Vector2D class using operator overloading to keep the vector maths readable.

My first working version had no collision detection, no shading, and a flawed distance calculation that caused fisheye distortion and misaligned wall corners. To fix these issues I switched from a trigonometric derivation to DDA's own sideDist − deltaDist shortcut meant a full rewrite of the core maths.
I Ended up with a working 2.5D engine with correct perspective projection, side- and distance-based shading, and collision handling, controlled entirely by the keys WASD.