GL_Craft

GL_Craft is a small voxel engine/game (inspired by Minecraft) written in C++ and OpenGL. The project implements chunk rendering, world management, raycasting for block interaction and a debug UI using ImGui.

Key features

• Chunk rendering with OpenGL (Indirect draw calls combined with vertex pulling)
• Terrain generation (noise-based) with biomes
• Raycasting to select, place and remove blocks
• Post-processing and water rendering
• Lighting and shadows (basic with support for colored lights)
• Debug UI (ImGui)

Important structure

• src/: C++ source code (core, world, render, math, ui, utils, ...)
• ressources/shaders/: GLSL shaders
• ressources/textures/: textures used by the project
• libs/: bundled libraries (glad, imgui, stb, fastNoiseLite)
• CMakeLists.txt: build configuration

Dependencies

• CMake (recommended >= 3.31)
• A modern C++ compiler (g++/clang++ with C++17+ support)
• OpenGL 4.6
• GLFW development package (for windowing and input)
• GLM (math)

Note: Several dependencies are included under libs/. You still need system headers and libraries (notably GLFW and OpenGL headers) to link and run the application.

Run

• Start the generated binary (./GL_Craft or via your IDE)
• The window will open and the mouse will be captured for first-person control

Main controls

• Mouse: look around
• WASD: move
• Esc: quit
• Tab: toggle debug UI (ImGui)
• Left click: remove a block
• Right click: place a block
• Mouse wheel / Middle click: pick a block (middle click picks the block you're looking at)
• Number keys 1–9: select hotbar slots

Screenshots

Lake — example of water and terrain.

Lighting and shadows example.

Snow biome example.