Initial lua support

.gitmodules

@@ -1,3 +1,6 @@
 [submodule "extern/godot-cpp"]
 	path = extern/godot-cpp
 	url = https://github.com/godotengine/godot-cpp.git
+[submodule "extern/lua"]
+	path = extern/lua
+	url = https://github.com/Lyuu17/lua.git

CMakeLists.txt

@@ -113,4 +113,5 @@ add_subdirectory(extern)
 target_link_libraries( ${PROJECT_NAME}
     PRIVATE
         godot-cpp
+        lua
 )

extern/CMakeLists.txt

@@ -8,3 +8,6 @@ set_target_properties(godot-cpp
     PROPERTIES
         CXX_VISIBILITY_PRESET hidden    # visibility needs to be the same as the main library
 )
+
+# lua
+add_subdirectory(lua)

src/CMakeLists.txt

@@ -17,6 +17,8 @@ target_sources(${PROJECT_NAME}
         "SWBF2/Native/Chunks/UcfbChunk.cpp"
         "SWBF2/Native/Chunks/WorldChunk.cpp"
         "SWBF2/Native/Models/Model.cpp"
+        "SWBF2/Native/Scripting/Lua/LuaCallbacks.cpp"
+        "SWBF2/Native/Scripting/Lua/ScriptCB.cpp"
         "SWBF2/Native/Texture/Texture.cpp"
         "SWBF2/Native/Texture/TextureUtils.cpp"
         "SWBF2/Native/Hashes.cpp"

src/SWBF2/Native/SWBF2.cpp

@@ -5,6 +5,8 @@
 
 namespace SWBF2::Native
 {
+    lua_State *SWBF2::m_luaState;
+
     SkyDome SWBF2::m_skyDome;
 
     std::string SWBF2::m_curMapName;
@@ -27,6 +29,8 @@ namespace SWBF2::Native
 
         if (!UcfbChunk::ReadUcfbFile("data/_lvl_pc/common.lvl"))
             throw std::runtime_error{ "failed to load common.lvl from game directory" };
+
+        m_luaState = lua_open();
     }
 
     void SWBF2::Reset()
@@ -41,6 +45,8 @@ namespace SWBF2::Native
         m_models.clear();
         m_tex.clear();
         m_locl.clear();
+
+        lua_close(m_luaState);
     }
 
     bool SWBF2::LoadLevelFile(const std::string &levelname)

src/SWBF2/Native/SWBF2.hpp

@@ -1,6 +1,8 @@
 
 #pragma once
 
+#include <lua.h>
+
 #include "Native/Models/Model.hpp"
 #include "Native/Texture/Texture.hpp"
 #include "Native/Objects/ObjectDefinition.hpp"
@@ -71,6 +73,8 @@ namespace SWBF2::Native
             std::unordered_map<TeamClassType, TeamClass> m_classes;
         };
 
+        static lua_State *m_luaState;
+
         static SkyDome m_skyDome;
 
         static std::string m_curMapName;

src/SWBF2/Native/Scripting/Lua/LuaCallbacks.hpp

@@ -0,0 +1,13 @@
+
+#pragma once
+
+#include <lua.h>
+
+namespace SWBF2::Native::Scripting::Lua
+{
+    class LuaCallbacks {
+    public:
+        static void Init();
+        static void RegisterCallback(const char *name, lua_CFunction func);
+    };
+}