From 9f6f6397e49cf5711c3d8673e5b72932e1a5081d Mon Sep 17 00:00:00 2001
From: harrand <harrysjh98@gmail.com>
Date: Sat, 5 Aug 2023 15:28:25 +0100
Subject: [PATCH] + Basic lua support

---
 CMakeLists.txt       |  6 +++++-
 lib/CMakeLists.txt   | 38 ++++++++++++++++++++++++++++++++++++++
 src/tz/lua/state.cpp | 43 +++++++++++++++++++++++++++++++++++++++++++
 src/tz/lua/state.hpp | 22 ++++++++++++++++++++++
 4 files changed, 108 insertions(+), 1 deletion(-)
 create mode 100644 src/tz/lua/state.cpp
 create mode 100644 src/tz/lua/state.hpp

diff --git a/CMakeLists.txt b/CMakeLists.txt
index da6f64ba3a..55b1210e0f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -238,6 +238,10 @@ add_library(topaz STATIC
 	# image
 	src/tz/io/image.cpp
 	src/tz/io/image.hpp
+
+	# tz::lua
+	src/tz/lua/state.cpp
+	src/tz/lua/state.hpp
 	)
 
 if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Windows")
@@ -292,7 +296,7 @@ add_subdirectory(lib)
 
 target_include_directories(topaz PUBLIC ${PROJECT_SOURCE_DIR}/src)
 target_link_libraries(topaz PUBLIC imgui imgui_memory_editor glad textc_lib concurrentqueue nlohmann_json stb_image)
-target_link_libraries(topaz PRIVATE debugbreak Threads::Threads)
+target_link_libraries(topaz PRIVATE debugbreak Threads::Threads tz_lua)
 
 add_subdirectory(tools)
 include(cmake/shader_compiler.cmake)
diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index e2152e25d2..c28b495b7b 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -26,6 +26,44 @@ target_include_directories(stb_image INTERFACE stb)
 add_library(tz_vma STATIC
 	tz_vma.cpp)
 target_link_libraries(tz_vma PUBLIC vma)
+
+add_library(tz_lua STATIC
+	lua/lapi.c
+	lua/lcode.c
+	lua/lctype.c
+	lua/ldebug.c
+	lua/ldo.c
+	lua/ldump.c
+	lua/lfunc.c
+	lua/lgc.c
+	lua/llex.c
+	lua/lmem.c
+	lua/lobject.c
+	lua/lopcodes.c
+	lua/lparser.c
+	lua/lstate.c
+	lua/lstring.c
+	lua/ltable.c
+	lua/ltm.c
+	lua/lundump.c
+	lua/lvm.c
+	lua/lzio.c
+	lua/lauxlib.c
+	lua/lbaselib.c
+	lua/lcorolib.c
+	lua/ldblib.c
+	lua/liolib.c
+	lua/lmathlib.c
+	lua/loadlib.c
+	lua/loslib.c
+	lua/lstrlib.c
+	lua/ltablib.c
+	lua/lutf8lib.c
+	lua/linit.c
+
+	)
+target_include_directories(tz_lua PUBLIC "${PROJECT_SOURCE_DIR}/lib/lua")
+
 if(WIN32)
 	target_link_directories(tz_vma PUBLIC "$ENV{VULKAN_SDK}/Lib")
 	target_link_libraries(tz_vma PRIVATE vulkan-1)
diff --git a/src/tz/lua/state.cpp b/src/tz/lua/state.cpp
new file mode 100644
index 0000000000..524c5a48fe
--- /dev/null
+++ b/src/tz/lua/state.cpp
@@ -0,0 +1,43 @@
+#include "tz/lua/state.hpp"
+extern "C"
+{
+#include "lauxlib.h"
+#include "lua.h"
+#include "lualib.h"
+}
+#include <cstdint>
+
+namespace tz::lua
+{
+	state::state(void* lstate):
+	lstate(lstate){}
+
+	bool state::valid() const
+	{
+		return this->lstate != nullptr;
+	}
+
+	bool state::execute_file(const char* path) const
+	{
+		return luaL_dofile(static_cast<lua_State*>(this->lstate), path) == false;
+	}
+
+	bool state::execute(const char* lua_src) const
+	{
+		return luaL_dostring(static_cast<lua_State*>(this->lstate), lua_src) == false;
+	}
+
+	state defstate = {};
+
+
+	state& get_state()
+	{
+		if(!defstate.valid())
+		{
+			lua_State* l = luaL_newstate();
+			luaL_openlibs(l);
+			defstate = state{static_cast<void*>(l)};
+		}
+		return defstate;
+	}
+}
diff --git a/src/tz/lua/state.hpp b/src/tz/lua/state.hpp
new file mode 100644
index 0000000000..a42e5af034
--- /dev/null
+++ b/src/tz/lua/state.hpp
@@ -0,0 +1,22 @@
+#ifndef TZ_LUA_STATE_HPP
+#define TZ_LUA_STATE_HPP
+#include "tz/core/data/handle.hpp"
+
+namespace tz::lua
+{
+	class state
+	{
+	public:
+		state() = default;
+		state(void* lstate);
+		bool valid() const;
+		bool execute_file(const char* path) const;
+		bool execute(const char* lua_src) const;
+	private:
+		void* lstate = nullptr;
+	};
+
+	state& get_state();
+}
+
+#endif // TZ_LUA_STATE_HPP