2 files changed, 16 insertions, 1 deletions
diff --git a/source/base/StarAssets.cpp b/source/base/StarAssets.cpp
index 4a10aab..ecd2068 100644
--- a/source/base/StarAssets.cpp
+++ b/source/base/StarAssets.cpp
@@ -102,6 +102,14 @@ Maybe<RectU> FramesSpecification::getRect(String const& frame) const {
   }
 }
 
+Json FramesSpecification::toJson() const {
+  return JsonObject{
+    {"aliases", jsonFromMap(aliases)},
+    {"frames", jsonFromMapV(frames, jsonFromRectU)},
+    {"file", framesFile}
+  };
+}
+
 Assets::Assets(Settings settings, StringList assetSources) {
   const char* AssetsPatchSuffix = ".patch";
   const char* AssetsPatchListSuffix = ".patchlist";
@@ -139,6 +147,12 @@ Assets::Assets(Settings settings, StringList assetSources) {
         return *assetImage;
     });
 
+    callbacks.registerCallback("frames", [this](String const& path) -> Json {
+      if (auto frames = imageFrames(path))
+        return frames->toJson();
+      return Json();
+    });
+
     callbacks.registerCallback("scan", [this](Maybe<String> const& a, Maybe<String> const& b) -> StringList {
       return b ? scan(a.value(), *b) : scan(a.value());
     });
diff --git a/source/base/StarAssets.hpp b/source/base/StarAssets.hpp
index 6b454e8..e7b8611 100644
--- a/source/base/StarAssets.hpp
+++ b/source/base/StarAssets.hpp
@@ -27,7 +27,8 @@ struct FramesSpecification {
   // Get the target sub-rect of a given frame name (which can be an alias).
   // Returns nothing if the frame name is not found.
   Maybe<RectU> getRect(String const& frame) const;
-
+  // Converts to Json.
+  Json toJson() const;
   // The full path to the .frames file from which this was loaded.
   String framesFile;
   // Named sub-frames