Raycasting is a rendering technique to create a 3D perspective using a 2D map. Older games like Doom and Wolfenstein3D are known games made using this technique. The basics of how the technique works is that a ray for every pixel in the width of the screen is sent out from the cameras position until it hits a square that is representing a wall. If it hits a wall then the distance is calculated and a line is drawn to the screen with the height depending on the distance.
Here are some useful resources used while building this application.
This project is maintained under the MIT License.