roam-terrain-generator's Introduction

roam-terrain-generator

roam-terrain-generator is an experimental program that generates infinite landscapes using a modified "split-only" version of ROAM for level of detail (LOD).

Features

Uses a chunking algorithm to generate infinite terrain
Uses ROAM algorithm to determine LOD for each terrain chunk
Multithreaded implementation allows terrain LOD to be updated efficiently
Applies textures procedurally based on the slope of the land
Generates grass blades with instancing (previously done with a geometry shader)

Setup and Build

Place any images called dirt.jpg, grass.jpg, grass_blades.png, and rock.jpg into TerrainGenerator/textures. These textures will used when rendering the landscape. (Some potential textures: dirt, grass, grass-blades, rock)

This project has the following dependencies:

OpenGL 3.3
SDL 2.0.7
GLEW 2.1.0
GLM 0.9.8.5
libnoise
Simple OpenGL Image Library (SOIL)

CMake 3.8+ is required to generate the build files. From the top-level project directory, run the following commands:

mkdir build
cd build
cmake ../

Dependencies are resolved using CMake's internal Find scripts and custom Find scripts in the cmake directory. If a dependency cannot be located, try modifying the paths in the top-level CMakeLists.txt.

Controls

Mousemove: Look around
W: Move forward
A: Move left
S: Move backward
D: Move right
E: Switch between walk mode and fly mode
R: Toggle wireframe mode on/off
Spacebar: Fly up (fly mode only)
Shift: Fly down (fly mode only)
ESC: Exit the program

Notes/Limitations

Cracks can form in the terrain due to differences in level of detail between terrain chunks.

Images

Wireframe for a single terrain chunk with the greatest number of triangles in the lower left corner (where the viewer would be located):

Recommend Projects

zhangjiangen / roam-terrain-generator Goto Github PK