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README.md

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Half-Life engine map compile tools, based on Vluzacn's ZHLT v34 with code contributions from various contributors. Based on Valve's version, modified with permission.

New features include new entities, additional tool textures, ability to extend world size limits, portal file optimisation for J.A.C.K. map editor and minor algorithm optimization.

How to install

  1. Open the configuration dialog of your map editor or batch compiler.
  2. Set CSG, BSP, VIS, RAD tool paths to sdHLCSG.exe, sdHLBSP.exe, sdHLVIS.exe, sdHLRAD.exe, use the _x64.exe editions if running on 64-bit.
  3. Add 'sdhlt.wad' into your wad list. This is required to compile maps.
  4. Add 'sdhlt.fgd' into your fgd list.

The main benefit of the 64-bit version is no memory allocation failures, because the 64-bit tools have access to more than 2GB of system memory.

Features

Compile parameters

  • -pre25 RAD parameter overrides light clipping threshhold limiter to 188. Use this when creating maps for the legacy pre-25th anniversary engine without worrying about other parameters.
  • -extra RAD parameter now sets -bounce 12 for a higher quality of lighting simulation.
  • -worldextent n CSG parameter. Extends map geometry limits beyond +/-32768.
  • Portal file optimization for J.A.C.K. map editor, allows for importing the prt file into the editor directly after VIS. Use -nofixprt VIS parameter to disable.
  • -nowadautodetect CSG parameter. Wadautodetect is now true by default regardless of settings.

Entities

  • info_portal and info_leaf used to create a portal from the leaf the info_portal is inside, to selected leaf the info_leaf is inside. Forces target leaf to be visible from the current one, making all entities visible.
  • info_minlights used to set minlights per-texture, works on world geometry too.

Textures

  • BEVELHINT texture, which acts like SOLIDHINT and BEVEL. Eliminates unnecessary face subdivision and bevels clipnodes at the same time. Useful on complex shapes such as terrain, spiral staircase clipping, etc.
  • SPLITFACE texture. Brushes with this texture will subdivide faces they touch along their edges, similarly to zhlt_chopdown.
  • cur_tool textures, which act like CONTENTWATER and func_pushable with a speed of 2048 units/s in -Y. This texture is always fullbright.

Planned

  • BLOCKLIGHT texture, cast shadows without generating faces or cliphulls.
  • Optimization for BuildFacelights and LeafThread
  • Shadow casting for studiomodels, potentially adapting code from other codebases.
  • Res file creation for servers
  • Split concerns into their own libraries instead of repeating infrastructure and util code

Documentation