store pointer to state in lua

demo/data/rollball.lua

-print("File has been loaded!")
+print("File has been loaded!")
\ No newline at end of file
+print(state);
\ No newline at end of file

demo/demo/rollball.cpp

@@ -81,7 +81,9 @@ namespace demo {
 		m_phys = physService->create(&world(), entFactory);
 
 		auto* scriptProvider = m_owner.service<fggl::script::ScriptProvider>();
+
 		m_scripts = scriptProvider->create();
+		m_scripts->setGlobal("state", this);
 
 		// asset loader
 		auto* assetLoader = m_owner.service<fggl::assets::Loader>();

include/fggl/script/engine.hpp

@@ -40,6 +40,8 @@ namespace fggl::script {
 			// run code in engine
 			virtual bool run(const char* script) = 0;
 			virtual bool load(const char* filename) = 0;
+
+			virtual void setGlobal(const char* name, void* ptr) = 0;
 	};
 
 	class ScriptProvider {

integrations/lua/include/fggl/script/lua/engine.hpp

@@ -45,6 +45,9 @@ namespace fggl::script::lua {
 			bool run(const char* script) override;
 			bool load(const char* filename) override;
 
+			// variables
+			void setGlobal(const char* name, void* ptr) override;
+
 		private:
 			data::Storage* m_storage;
 			lua_State* m_state;

integrations/lua/src/engine.cpp

@@ -95,4 +95,9 @@ namespace fggl::script::lua {
 		return true;
 	}
 
+	void LuaScriptEngine::setGlobal(const char *name, void *ptr) {
+		lua_pushlightuserdata(m_state, ptr);
+		lua_setglobal(m_state, name);
+	}
+
 }
\ No newline at end of file