ZenNode rebuilds nodes for Doom engine maps (including those for Heretic and Hexen). In the process of building maps for these games, the level normally needs to be processed to include a complete binary-space partition (BSP) tree, and a reject table. Each of these allows the engine to efficiently render a level and perform line-of-sight calculations to determine whether monsters can see a player.
Many map editors today contain their own built-in node builder, however there are also a great deal that require an external one, generate bad nodes, or simply don’t try at all.
- -b, -bc
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Rebuilds the blockmap. This is used for collision detection. Use -bc to compress the BLOCKMAP.
- -n, -na=[1|2|3], -nq, -nu, -ni
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Rebuild the nodes, this is the BSP tree used so the engine understands the fastest path to render any given scene. -na controls the algorithm. 1 minimizes splits, 2 minimizes depths, 3 minimizes time. -nq quiets the output and doesn’t display a progress bar. -nu ensures that all subsectors contain only a single sector. -ni ignores non-visible linedefs.
- -r, -rz, -rf, -rg, -rm
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Rebuilds the reject table, used for line-of-sight calculations, determining whether a player and monster can see each other. -rz inserts an empty reject table, -rf rebuilds even if ZenNode would otherwise detect it as being unneeded, -rg uses graphs to reduce line-of-sight calculations. -rm processes an RMB option file, which is the same name as the WAD being processed but with a .rej extension.
- -t
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Test mode, does not write out a file.
- FILE…
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The file(s) to be processed, use + characters to specify additional files. If more than one, they will be combined into the output file and the -o option is required.
- LEVEL…
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The level(s) to be processed, by default ZenNode will process all levels contained in the WAD. Like file names, use + to specify multiple levels. These must match the names of the levels in the WAD directory tree. For Doom and Heretic, this is normally ExMy. For Doom II and Hexen, this is normally MAPxx.
- -o FILE, -x FILE
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The name of the output file. By default, ZenNode will overwrite the input file.
The default options for ZenNode correspond to -bc -na=1 -rg. Any of the features can be disabled by using a hyphen, -b- -n- -r- would effectively be a no-op run.
bspcomp(1) bspdiff(1) bspinfo(1)