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feat(extract): emit open-format side-files (BLP→PNG, DBC→JSON)

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The asset_extract tool now optionally writes wowee open-format
copies next to each extracted proprietary file:
  --emit-png      foo.blp → foo.png
  --emit-json-dbc foo.dbc → foo.json
  --emit-open     shortcut for both

Originals are left untouched, so private servers (AzerothCore,
TrinityCore) that load from the manifest's .blp/.dbc paths
continue to work unchanged. The wowee runtime / editor can now
consume the open formats directly without an extra conversion pass.

Implementation:
- New tools/asset_extract/open_format_emitter.{hpp,cpp} encapsulates
  the post-extract walk + per-file conversion.
- BLP→PNG uses BLPLoader::load + stbi_write_png with the same
  dimension/buffer-size sanity guards the editor's texture exporter
  applies.
- DBC→JSON mirrors the editor's DBCExporter::exportAsJson schema
  (string/float/uint heuristic) so the runtime DBC overlay loader
  can consume the output drop-in.
This commit is contained in:
Kelsi 2026-05-06 10:23:32 -07:00
parent 9e801f93b6
commit 5ed2008621
6 changed files with 212 additions and 0 deletions
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11
tools/asset_extract/main.cpp
View file

@ -24,6 +24,9 @@ static void printUsage(const char* prog) {
<< " --reference-manifest <path>\n"
<< " Only extract files NOT in this manifest (delta extraction)\n"
<< " --dbc-csv-out <dir> Write CSV DBCs into <dir> (overrides default output path)\n"
<< " --emit-png Emit foo.png next to every extracted foo.blp\n"
<< " --emit-json-dbc Emit foo.json next to every extracted foo.dbc\n"
<< " --emit-open Shortcut: enable every open-format emitter (png+json)\n"
<< " --verify CRC32 verify all extracted files\n"
<< " --threads <N> Number of extraction threads (default: auto)\n"
<< " --verbose Verbose output\n"
@ -52,6 +55,14 @@ int main(int argc, char** argv) {
opts.skipDbcExtraction = true;
} else if (std::strcmp(argv[i], "--dbc-csv") == 0) {
opts.generateDbcCsv = true;
} else if (std::strcmp(argv[i], "--emit-png") == 0) {
opts.emitPng = true;
} else if (std::strcmp(argv[i], "--emit-json-dbc") == 0) {
opts.emitJsonDbc = true;
} else if (std::strcmp(argv[i], "--emit-open") == 0) {
// Meta-flag: turn on every available open-format emitter.
opts.emitPng = true;
opts.emitJsonDbc = true;
} else if (std::strcmp(argv[i], "--dbc-csv-out") == 0 && i + 1 < argc) {
opts.dbcCsvOutputDir = argv[++i];
} else if (std::strcmp(argv[i], "--listfile") == 0 && i + 1 < argc) {