Raycasting

Implementing a basic Raycasting renderer in C similiar to the Wolfenstein 3D technique.

Caveat

Assumptions in my implementation:

• Walls are perpendicular with the floor
• Floor is flat
• Walls are made of cubes with the same size

As I'm using angles to represent orientation, I require expensive functions like sine, cosine and tangent. Therefore, this is not the fastest raycasting implementation. If you pursue performance, you shoud look into the famous Lodev article, that uses vectors (x,y) to represent orientation.

Instructions

Use the key arrows to move around the map. Press m for the minimap.

Compilation

This project is built in C99 and it compiles perfectly with GCC. The project uses SDL to deal with pixels, keyboard, etc.

Textures

The textures and sprites that I'm using in this project belong to ID Software. I just recreated them for educational purposes. To read these PNG files I'm using uPNG.

To Do

• Animate sprites
• Profiling
• The logic that handles if a sprite is visible or not shouln't run on the drawSpriteProjection(). This should happen in the movePlayer(), as the PoV gets updated there. drawSpriteProjection() should render only