fix(scriptcompiler): add public allocateID API and FetchContent fallback for nlohmann-json

Author: bobtista

Core/Libraries/Include/DataChunk/DataChunk.h

@@ -138,6 +138,11 @@ class DataChunkOutput
 
 	/** Write an array of bytes. */
 	void writeArrayOfBytes(const char* ptr, ChunkInt len);
+
+	/** Allocate or get existing ID for a chunk type name.
+	    @param name Chunk type name
+	    @return Integer ID (existing or newly allocated) */
+	ChunkUInt allocateID(const ChunkString& name);
 };
 
 //----------------------------------------------------------------------

Core/Libraries/Source/DataChunk/DataChunkOutput.cpp

@@ -193,5 +193,10 @@ void DataChunkOutput::writeArrayOfBytes(const char* ptr, ChunkInt len)
 	}
 }
 
+ChunkUInt DataChunkOutput::allocateID(const ChunkString& name)
+{
+	return m_contents.allocateID(name);
+}
+
 } // namespace DataChunk
 

Core/Tools/ScriptCompiler/CMakeLists.txt

@@ -2,15 +2,29 @@ set(SCRIPTCOMPILER_SRC
     "ScriptCompiler.cpp"
 )
 
-find_package(nlohmann_json CONFIG REQUIRED)
-
 add_executable(core_scriptcompiler)
 set_target_properties(core_scriptcompiler PROPERTIES OUTPUT_NAME scriptcompiler)
 
 target_sources(core_scriptcompiler PRIVATE ${SCRIPTCOMPILER_SRC})
 
+# Try to find nlohmann-json from vcpkg first
+find_package(nlohmann_json CONFIG)
+if(nlohmann_json_FOUND)
+    # Use vcpkg version
+    target_link_libraries(core_scriptcompiler PRIVATE nlohmann_json::nlohmann_json)
+else()
+    # Fallback: fetch from GitHub (header-only library)
+    include(FetchContent)
+    FetchContent_Declare(json
+        GIT_REPOSITORY https://github.com/nlohmann/json.git
+        GIT_TAG v3.11.3
+        GIT_SHALLOW TRUE
+    )
+    FetchContent_MakeAvailable(json)
+    target_link_libraries(core_scriptcompiler PRIVATE nlohmann_json::nlohmann_json)
+endif()
+
 target_link_libraries(core_scriptcompiler PRIVATE
-    nlohmann_json::nlohmann_json
     core_datachunk
 )
 

Core/Tools/ScriptCompiler/ScriptCompiler.cpp

@@ -863,7 +863,7 @@ bool writeJsonToBinary(const json& input, const std::string& outFile)
 			{
 				if (!stringTable[i].empty())
 				{
-					chunkOutput.m_contents.allocateID(stringTable[i]);
+					chunkOutput.allocateID(stringTable[i]);
 				}
 			}