/apps/twnlua: fix for windows, parametrize newstate for alloc func

apps/twnlua/CMakeLists.txt

@@ -1,7 +1,8 @@
-cmake_minimum_required(VERSION 3.21)
-cmake_policy(SET CMP0171 NEW)
+cmake_minimum_required(VERSION 3.30)
 project(twnlua LANGUAGES C)
 
+find_package(Python3 COMPONENTS Interpreter)
+
 if(NOT CMAKE_BUILD_TYPE)
         set(CMAKE_BUILD_TYPE Debug)
 endif()
@@ -14,14 +15,13 @@ set(FLAGS
 
 add_custom_command(
    OUTPUT ${CMAKE_CURRENT_SOURCE_DIR}/game.c
-   COMMAND ${PYTHON3} ${CMAKE_CURRENT_SOURCE_DIR}/bindgen.py $ENV{TWNROOT}/share/twn_api.json ${FLAGS} > ${CMAKE_CURRENT_SOURCE_DIR}/luabind.c
+   COMMAND ${Python3_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/bindgen.py $ENV{TWNROOT}/share/twn_api.json ${FLAGS} > ${CMAKE_CURRENT_SOURCE_DIR}/luabind.c
    DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/bindgen.py $ENV{TWNROOT}/share/twn_api.json
-   CODEGEN
 )
 
 add_custom_command(
    OUTPUT ${TWN_OUT_DIR}/data/scripts/twnapi.lua
-   COMMAND ${PYTHON3} ${CMAKE_CURRENT_SOURCE_DIR}/docgen.py $ENV{TWNROOT}/share/twn_api.json > ${TWN_OUT_DIR}/data/scripts/twnapi.lua
+   COMMAND ${Python3_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/docgen.py $ENV{TWNROOT}/share/twn_api.json > ${TWN_OUT_DIR}/data/scripts/twnapi.lua
    DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/docgen.py $ENV{TWNROOT}/share/twn_api.json
 )
 

apps/twnlua/game.c

@@ -147,12 +147,12 @@ static void exchange_lua_states(lua_State *from, lua_State *to, int level, int i
 void game_tick(void) {
     if (ctx.initialization_needed) {
         if (!ctx.udata)
-            ctx.udata = calloc(1, sizeof (State));
+            ctx.udata = SDL_calloc(1, sizeof (State));
 
         State *state = ctx.udata;
 
         /* let's init lua */
-        lua_State *new_state = luaL_newstate();
+        lua_State *new_state = luaL_newstate(custom_alloc);
         lua_setallocf(new_state, custom_alloc, NULL);
 
         /* state existed already, copy its udata over */
@@ -161,7 +161,6 @@ void game_tick(void) {
             lua_getfield(state->L, -1, "udata");
             SDL_assert(!lua_isnoneornil(state->L, -1));
             SDL_assert(!lua_isnoneornil(state->L, -2));
-            // SDL_TriggerBreakpoint();
             if (!lua_isnoneornil(state->L, -1)) {
                 log_info("Exchanging lua states...");
                 lua_newtable(new_state);
@@ -228,7 +227,7 @@ void game_tick(void) {
             lua_pop(state->L, 1);
         }
 
-        free(game_buf);
+        SDL_free(game_buf);
 
         /* from this point we have access to everything defined in lua */
     }
@@ -261,5 +260,5 @@ void game_end(void) {
     State *state = ctx.udata;
     bindgen_unload_twn(state->L);
     lua_close(state->L);
-    free(state);
+    SDL_free(state);
 }

apps/twnlua/minilua.h

@@ -1513,7 +1513,7 @@ LUALIB_API int (luaL_loadbufferx) (lua_State *L, const char *buff, size_t sz,
                                    const char *name, const char *mode);
 LUALIB_API int (luaL_loadstring) (lua_State *L, const char *s);
 
-LUALIB_API lua_State *(luaL_newstate) (void);
+LUALIB_API lua_State *(luaL_newstate) (lua_Alloc alloc);
 
 LUALIB_API lua_Integer (luaL_len) (lua_State *L, int idx);
 
@@ -21898,8 +21898,8 @@ static void warnfon (void *ud, const char *message, int tocont) {
 }
 
 
-LUALIB_API lua_State *luaL_newstate (void) {
-  lua_State *L = lua_newstate(l_alloc, NULL);
+LUALIB_API lua_State *luaL_newstate (lua_Alloc alloc) {
+  lua_State *L = lua_newstate(alloc ? alloc : l_alloc, NULL);
   if (l_likely(L)) {
     lua_atpanic(L, &panic);
     lua_setwarnf(L, warnfoff, L);  /* default is warnings off */

apps/twnlua/state.h

@@ -1,8 +1,6 @@
 #ifndef STATE_H
 #define STATE_H
 
-#include <lua.h>
-
 #include <stdbool.h>
 
 typedef struct State {