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https://github.com/ddupont808/planetcraft
Minecraft-like voxels mapped onto large spherical planets
https://github.com/ddupont808/planetcraft
Last synced: about 1 month ago
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Minecraft-like voxels mapped onto large spherical planets
- Host: GitHub
- URL: https://github.com/ddupont808/planetcraft
- Owner: ddupont808
- Created: 2024-01-07T07:13:17.000Z (12 months ago)
- Default Branch: main
- Last Pushed: 2024-01-07T07:21:37.000Z (12 months ago)
- Last Synced: 2024-01-07T08:26:09.642Z (12 months ago)
- Language: C#
- Size: 51.9 MB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
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Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# Planetcraft
This is a playable proof-of-concept of a Minecraft-like voxel game mapped onto a large-scale spherical planet. It is written in C# and HLSL and created in Unity3D.
https://github.com/ddupont808/planetcraft/assets/3820588/d7989566-fdff-4cd0-be97-dc0880a9352b
This video demonstrates a 12km wide flatgrass planet with rings at `y=6025 x=2 z=2` using a mod that adds Minecraft content (examplemod.zip)
## Features
- A 12km wide spherical planet made of cubical voxels
- Basic JS modding API
- Flood-fill voxel lighting w/ ambient occlusion
## Why is this significant?
The planets in Planetcraft consist of **cubical voxels** on a **flat spherical surface**. It is [mathematically impossible to map any sort of plane (like a cube) to a sphere without distortion](https://en.wikipedia.org/wiki/Stereographic_projection#Cartography). Planetcraft does not try to fake anything using shaders, instead it explores several different techniques to try to minimize distortion while still being a true planet.
Rather than a single continous mapping, the world structure is arranged into 6 different grids, and mapped using [this equation](https://mathproofs.blogspot.com/2005/07/mapping-cube-to-sphere.html):
As you increase your altitude, blocks will start to stretch horizontally until they become ~2m wide, at which point the chunks will subdivide to try to minimize distortion. This project was designed with large-scale planets in mind which reduces the amount of subdivisions a player would encounter around sea level.
The final result is an uniquely shaped world structure. A 2D slice of which can be seen below:
## Media
Below are screenshots of an earlier version that supported planets only up to 200 meters wide. In this version, the core contained a highly distorted Nether layer.
