calinou / game-maps-obj

Open source game maps as OBJ files (useful for testing 3D engines)

Game maps as OBJ meshes

This repository contains various OBJ files exported from Sauerbraten, Red Eclipse and Tesseract. These maps were exported using the /writeobj <destination> command after loading the map in the game.

Looking for the cmvalley map exported as an OBJ file? Head to the Releases tab.

Games

Maps were exported from the following games:

• Red Eclipse (commit ecfe18c51)
• Sauerbraten (2020 edition)
• Tesseract (SVN revision 2343)

Recommended maps

Here are some hand-picked recommendations if you'd like to try out some maps:

Name	Game	Vertex/triangle count	Good for	License
cmvalley¹	Sauerbraten	🟥 1112k verts, 2080k tris	Testing renderers in a large scale/open world map	CC BY 4.0
core_transfer	Sauerbraten	🟩 45k verts, 76k tris	Testing global illumination and fog	CC BY-NC-SA 2.5
eternal_valley	Sauerbraten	🟩 55k verts, 98k tris	Testing global illumination and its resistance to leaks	CC BY-NC-SA 3.0
earthstation	Sauerbraten	🟥 440k verts, 188k tris	Testing renderers in a space station with interior and exterior	CC BY-NC-SA 4.0
fc4	Sauerbraten	🟩 44k verts, 80k tris	Testing renderers over a fairly large area (with inland terrain)	CC BY-NC-SA 3.0
fc5	Sauerbraten	🟨 103k verts, 189k tris	Testing renderers over a fairly large area (mostly buildings)	CC BY-NC-SA 3.0
gorge	Sauerbraten	🟩 171k verts, 92k tris	Testing renderers in a mixed indoor/outdoor cave map	CC BY-NC-SA 4.0
hidden	Sauerbraten	🟨 105k verts, 190k tris	Testing renderers over a fairly large area (mostly buildings)	CC BY-NC-SA 3.0
k_rpg1	Sauerbraten	🟨 136k verts, 261k tris	Testing renderers in a large scale/open world map	CC BY-NC-SA 2.5
octavus	Red Eclipse	🟩 52k verts, 86k tris	Testing renderers over a fairly large area (with smooth terrain)	CC BY-SA 3.0
pandora	Sauerbraten	🟩 36k verts, 61k tris	Testing lighting in a fully indoor level	CC BY 4.0
reflection	Tesseract	🟩 68k verts, 116k tris	Testing global illumination and fog (indoors with sunlight)	CC BY-SA 3.0
skrsp1	Sauerbraten	🟩 59k verts, 103k tris	Testing renderers over a fairly large area (with terrain)	CC BY-NC-SA 3.0
steelribs	Tesseract	🟩 27k verts, 46k tris	Testing renderers with a floating hard-surface map	CC BY-SA 3.0
tectonic	Sauerbraten	🟩 47k verts, 87k tris	Testing renderers with an island-style map (buildings + terrain)	CC BY 4.0
ubik	Red Eclipse	🟨 87k verts, 166k tris	Testing renderers with a floating futuristic urban area	CC BY-SA 3.0
warlock	Sauerbraten	🟨 191k verts, 108k tris	Testing renderers with a symmetrical outdoor castle map	CC BY-SA 4.0

¹: cmvalley can be downloaded from the Releases tab.

Using textures

If you wish textures to be available for use in other engines, you can extract them from a Sauerbraten, Red Eclipse or Tesseract installation folder.

To avoid having to copy the entire installation folder (and suffering from long import times as a result), install Python and run collect_textures.py with the following arguments:

python collect_textures.py path/to/file.mtl --input path/to/game/installation/folder --output path/to/folder

This will copy textures referenced within a MTL file to be used in another engine. Make sure to point --output to the location where the OBJ/MTL files are stored, as texture paths are relative to the MTL file's location.

Caveats

• Maps are exported at a larger scale than you probably want. This may cause large maps not to appear at all once imported due to view frustum culling. To solve this, tell the engine to import the OBJ mesh at a lower scale if possible. Otherwise, you can scale the OBJ mesh by a factor of about 0.05. (Scaling afterwards may reduce mesh precision, which is why scaling at import-time should be preferred.)
• Due to how maps are designed in Cube 2 engine games, their topology may be inefficient or otherwise unusual. This could lead to issues when generating collision meshes automatically.
• Maps don't contain lights, mapmodels (detail models such as trees, barrels, …) and materials (such as water, lava and glass). You will have to readd those manually if desired.

License

See .txt files associated with each map for the license.

All maps in the redeclipse/ and tesseract/ folders are under free culture Creative Commons licenses (with commercial use and modification allowed). In those folders, CC BY-SA is the strictest license used, although some maps are under CC BY or CC0 instead.

Warning

Some maps in the sauerbraten/ folder use Creative Commons licenses that disallow commercial use. Still, modification is allowed as maps that use a no-derivatives license were excluded from this set.