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feat(assets): PNG override probes custom_zones/textures and output/textures

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The previous implementation required the .blp to exist in the asset
manifest before the PNG sidecar could be found. That prevented
custom-zone exports from shipping PNG-only textures (which is the whole
point of the open-format pipeline). Now if the manifest lookup fails
the loader probes well-known custom-zone roots so PNG-only assets work
out of the box.
This commit is contained in:
Kelsi 2026-05-06 03:04:12 -07:00
parent 7822790c60
commit 560b4a9d35
1 changed files with 21 additions and 7 deletions
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28
src/pipeline/asset_manager.cpp
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@ -231,16 +231,30 @@ BLPImage AssetManager::tryLoadPngOverride(const std::string& normalizedPath) con
std::string ext = normalizedPath.substr(normalizedPath.size() - 4);
if (ext != ".blp") return BLPImage();
// Try the standard sidecar path first: extracted .blp's directory + .png.
std::string fsPath = resolveFile(normalizedPath);
if (fsPath.empty()) return BLPImage();
// Replace .blp/.BLP extension with .png
if (fsPath.size() < 4) return BLPImage();
std::string pngPath = fsPath.substr(0, fsPath.size() - 4) + ".png";
if (!LooseFileReader::fileExists(pngPath)) {
return BLPImage();
std::string pngPath;
if (!fsPath.empty() && fsPath.size() >= 4) {
pngPath = fsPath.substr(0, fsPath.size() - 4) + ".png";
if (!LooseFileReader::fileExists(pngPath)) pngPath.clear();
}
// Fallback: probe well-known custom-zone texture roots so that PNG-only
// assets ship without needing a phantom BLP manifest entry. Path is
// forward-slash + lowercase to match the editor's PNG export convention.
if (pngPath.empty()) {
std::string norm = normalizedPath;
std::replace(norm.begin(), norm.end(), '\\', '/');
std::transform(norm.begin(), norm.end(), norm.begin(),
[](unsigned char c) { return std::tolower(c); });
std::string candidate = norm.substr(0, norm.size() - 4) + ".png";
for (const char* root : {"custom_zones/textures/", "output/textures/"}) {
std::string p = std::string(root) + candidate;
if (LooseFileReader::fileExists(p)) { pngPath = p; break; }
}
}
if (pngPath.empty()) return BLPImage();
int w, h, channels;
unsigned char* pixels = stbi_load(pngPath.c_str(), &w, &h, &channels, 4);
if (!pixels) {