Three new sanity checks before stbi_write_png:
- dimensions <=0 or >8K rejected (matches PNG override loader cap)
- data buffer must be >= width * height * 4 bytes (corrupt BLP could
have mismatched dimensions vs data length, and stbi reads off the
end of the buffer otherwise)
Skips with warning rather than crashing the exporter mid-zone.
Texture paths come from M2/WMO files which a malicious zone author
could craft to include '..' or absolute paths. Without this check,
exporting such a zone would write PNGs outside outputDir/textures/
and clobber sibling export files.
Character body/skin textures live in CharSections-composed paths that
don't exist as standalone BLPs. Exporting a zone with many character
NPCs would spam hundreds of warnings. Now logs the first 5, suppresses
the rest, and reports the total skipped count in the summary line.
WMO buildings reference M2 doodads (chairs, candles, banners) via the
MODD chunk. Their textures live in those M2 files, not the WMO root.
Now collectWMOTextures walks every doodad name and collects M2 textures
recursively so exported buildings include all their interior decoration
textures.
Placed WMO buildings reference textures (walls, floors, decorations) that
were not being exported alongside the WOB files. Added collectWMOTextures()
which loads the root WMO + all group files and gathers every texture path,
then folds these into the same PNG export pass that handles terrain and M2
textures. Exported zones now have every texture they need across all model
types.
TextureExporter::collectUsedTextures only picked up terrain textures, so
exported zones were missing every texture referenced by NPC creature models
and placed M2 doodads. Added collectM2Textures() and unified the export
collection to include terrain + all referenced M2 paths, so the rendered
zone is fully self-contained in the PNG/WOM open formats.
- TextureExporter: converts Blizzard BLP textures to standard PNG
for fully open redistribution of custom zones
- collectUsedTextures(): finds all texture paths referenced by terrain
- exportTexturesAsPng(): loads BLP via asset manager, writes RGBA PNG
using stb_image_write to output/MapName/textures/
- Zone export now automatically converts all used textures to PNG
- Client's PNG override system already loads these automatically
(checks for .png alongside .blp before loading)
Format replacement progress:
- DONE: ADT→WOT/WHM (terrain)
- DONE: WDT→zone.json (map definition)
- DONE: BLP→PNG (textures — auto-exported on zone save)
- TODO: DBC→JSON, M2→open model, WMO→open building
