From 1a95ec9d0a66acbba13806f7a0931edaa3950b6d Mon Sep 17 00:00:00 2001
From: Kelsi <kelsihates2fa@gmail.com>
Date: Tue, 5 May 2026 11:43:23 -0700
Subject: [PATCH] feat(editor): hole mask PNG export (16x16 chunk grid,
 white=holes)

---
 tools/editor/wowee_terrain.cpp | 12 ++++++++++++
 tools/editor/wowee_terrain.hpp |  4 ++++
 2 files changed, 16 insertions(+)

diff --git a/tools/editor/wowee_terrain.cpp b/tools/editor/wowee_terrain.cpp
index 67727f31..8548d31e 100644
--- a/tools/editor/wowee_terrain.cpp
+++ b/tools/editor/wowee_terrain.cpp
@@ -182,6 +182,18 @@ bool WoweeTerrain::exportWaterMask(const pipeline::ADTTerrain& terrain,
     return true;
 }
 
+bool WoweeTerrain::exportHoleMask(const pipeline::ADTTerrain& terrain,
+                                   const std::string& path) {
+    constexpr int res = 16;
+    std::vector<uint8_t> pixels(res * res);
+    for (int ci = 0; ci < 256; ci++)
+        pixels[ci] = (terrain.chunks[ci].holes != 0) ? 255 : 0;
+
+    std::filesystem::create_directories(std::filesystem::path(path).parent_path());
+    stbi_write_png(path.c_str(), res, res, 1, pixels.data(), res);
+    return true;
+}
+
 int WoweeTerrain::exportAlphaMaps(const pipeline::ADTTerrain& terrain,
                                     const std::string& outputDir) {
     namespace fs = std::filesystem;
diff --git a/tools/editor/wowee_terrain.hpp b/tools/editor/wowee_terrain.hpp
index 7c88f694..c9b0e84d 100644
--- a/tools/editor/wowee_terrain.hpp
+++ b/tools/editor/wowee_terrain.hpp
@@ -30,6 +30,10 @@ public:
     static bool exportWaterMask(const pipeline::ADTTerrain& terrain,
                                  const std::string& path);
 
+    // Export hole mask as PNG (white=hole, black=solid)
+    static bool exportHoleMask(const pipeline::ADTTerrain& terrain,
+                                const std::string& path);
+
     // Import terrain from open format back to ADTTerrain
     static bool importOpen(const std::string& basePath, pipeline::ADTTerrain& terrain);
 };