cub3d

Overview

cub3d implements a real-time raycasting renderer in C. It draws walls based on DDA ray traversal, supports textures, and handles player movement with smooth camera rotation.

Highlights

• DDA-based raycasting with wall distance and texture coordinates
• Player movement and camera rotation
• Basic z-buffering for proper sprite order
• Optimizations to keep 60 FPS on modest hardware

Technical Details

• Map parsing and validation with clear error messages
• Separate modules for math, rendering, and input
• Texture sampling with fixed-point arithmetic in hot paths
• Explicit memory ownership and cleanup on exit

Challenges

• Floating vs fixed-point tradeoffs
• Texture seams and precision errors
• Balancing clarity and performance in C

What I Learned

• Computer graphics math fundamentals
• Cache-aware data layouts
• Profiling and micro-optimizations