RayCaster

Introduction

This was one my favorite school project, so I decided to rebuild it, using C++ and SDL, and add more features such as wall textures and a map editor.

Definition

What is a RayCaster?

Raycasting is a technique used in computer graphics and game development to simulate a 3D perspective by projecting rays from the viewer's point of view into a 2D map. It determines what the viewer sees by detecting the first object each ray hits, allowing for efficient rendering of scenes.

Screenshots

Setup

Linux

On Linux, you can simply download the dependencies from your favorite package manager:

sudo apt install libsdl2-dev libsdl2-image-dev libsdl2-ttf-dev libsdl2-mixer-dev

Mac

On Mac, use brew to set up the required dependencies:

brew install sdl2 sdl2_image sdl2_ttf sdl2_mixer

Windows

On Windows, run the provided batch script setup-windows.bat to download and install the dependencies.

Build

cmake . -B cmake-build-debug
cd cmake-build-debug
make

Run

./RayCaster

Options

• -w 800 Set window width to 800px
• -h 600 Set window height to 600px
• -f Enable fullscreen mode
• m myworld.wld To use world stored in file myworld.wld

Controls

Game

Key	Action
ESC	Exit
Z	Move forward
Q	Strafe left
S	Move backward
D	Strafe right
+	Zoom in
-	Zoom out
²	Show/Hide fps counter

Editor

Key	Action
ESCAPE	Exit
0 - 9	Select texture
+	Next texture page
-	Previous texture page
Left click	Set tile
Right click	Remove tile
Shift (hold)	Move the map
S	Save world