world creation and generators menus moved to xml

src/logic/scripting/lua/libworld.cpp

@@ -3,8 +3,12 @@
 #include "../scripting.h"
 #include "../../../world/Level.h"
 #include "../../../world/World.h"
+#include "../../../engine.h"
 
 #include <cmath>
+#include <filesystem>
+
+namespace fs = std::filesystem;
 
 static int l_world_get_total_time(lua_State* L) {
     lua_pushnumber(L, scripting::level->getWorld()->totalTime);
@@ -27,10 +31,18 @@ static int l_world_get_seed(lua_State* L) {
     return 1;
 }
 
+static int l_world_exists(lua_State* L) {
+    auto name = lua_tostring(L, 1);
+    auto worldsDir = scripting::engine->getPaths()->getWorldFolder(name);
+    lua_pushboolean(L, fs::is_directory(worldsDir));
+    return 1;
+}
+
 const luaL_Reg worldlib [] = {
     {"get_total_time", lua_wrap_errors<l_world_get_total_time>},
     {"get_day_time", lua_wrap_errors<l_world_get_day_time>},
     {"set_day_time", lua_wrap_errors<l_world_set_day_time>},
     {"get_seed", lua_wrap_errors<l_world_get_seed>},
+    {"exists", lua_wrap_errors<l_world_exists>},
     {NULL, NULL}
 };