add version to world info

doc/en/scripting/builtins/libworld.md

@@ -10,6 +10,8 @@ world.get_list() -> tables array {
     name: str,
     -- world icon/preview (loading automatically)
     icon: str
+    -- engine version the world was saved on
+    version: {int, int}
 }
 
 -- Returns current day time in range \[0.0-1.0\] 

doc/ru/scripting/builtins/libworld.md

@@ -9,7 +9,9 @@ world.get_list() -> массив таблиц {
     -- название мира
     name: str,
     -- предпросмотр (автоматически загружаемая текстура)
-    icon: str
+    icon: str,
+    -- версия движка, на которой был сохранен мир
+    version: {int, int}
 }
 
 -- Возвращает текущее игровое время от 0.0 до 1.0, где 0.0 и 1.0 - полночь, 0.5 - полдень.

res/layouts/pages/worlds.xml.lua

@@ -1,6 +1,13 @@
 function on_open()
     local worlds = world.get_list()
     for _, info in ipairs(worlds) do
+        local major, minor = core.get_version()
+        if info.version[1] > major or info.version[2] > minor then
+            info.versionColor = "#A02010"
+        else
+            info.versionColor = "#808080"
+        end
+        info.versionString = string.format("%s.%s", unpack(info.version))
         document.worlds:add(gui.template("world", info))
     end
 end

res/layouts/templates/world.xml

@@ -14,4 +14,5 @@
             onclick='core.delete_world("%{name}")'>
         <image src='gui/delete_icon' size='32,32' color='#FFFFFF50'/>
     </button>
+    <label color='%{versionColor}' pos='317,44'>%{versionString}</label>
 </container>

src/logic/scripting/lua/libs/libcore.cpp

@@ -20,6 +20,12 @@
 
 using namespace scripting;
 
+static int l_get_version(lua::State* L) {
+    return lua::pushvec_stack(
+        L, glm::vec2(ENGINE_VERSION_MAJOR, ENGINE_VERSION_MINOR)
+    );
+}
+
 /// @brief Creating new world
 /// @param name Name world
 /// @param seed Seed world
@@ -239,6 +245,7 @@ static int l_quit(lua::State*) {
 }
 
 const luaL_Reg corelib[] = {
+    {"get_version", lua::wrap<l_get_version>},
     {"new_world", lua::wrap<l_new_world>},
     {"open_world", lua::wrap<l_open_world>},
     {"reopen_world", lua::wrap<l_reopen_world>},

src/logic/scripting/lua/libs/libworld.cpp

@@ -4,7 +4,9 @@
 
 #include "assets/Assets.hpp"
 #include "assets/AssetsLoader.hpp"
+#include "coders/json.hpp"
 #include "engine.hpp"
+#include "files/files.hpp"
 #include "files/engine_paths.hpp"
 #include "world/Level.hpp"
 #include "world/World.hpp"
@@ -32,22 +34,34 @@ static int l_get_list(lua::State* L) {
     for (size_t i = 0; i < worlds.size(); i++) {
         lua::createtable(L, 0, 1);
 
-        auto name = worlds[i].filename().u8string();
+        const auto& folder = worlds[i];
+
+        auto root = json::parse(files::read_string(folder/fs::u8path("world.json")));
+        const auto& versionMap = root["version"];
+        int versionMajor = versionMap["major"].asInteger();
+        int versionMinor = versionMap["minor"].asInteger();
+
+
+        auto name = folder.filename().u8string();
         lua::pushstring(L, name);
         lua::setfield(L, "name");
 
         auto assets = engine->getAssets();
         std::string icon = "world#" + name + ".icon";
         if (!AssetsLoader::loadExternalTexture(
-                assets,
-                icon,
-                {worlds[i] / fs::path("icon.png"),
-                 worlds[i] / fs::path("preview.png")}
-            )) {
+            assets,
+            icon,
+            {worlds[i] / fs::path("icon.png"),
+                worlds[i] / fs::path("preview.png")}
+        )) {
             icon = "gui/no_world_icon";
         }
         lua::pushstring(L, icon);
         lua::setfield(L, "icon");
+
+        lua::pushvec2(L, {versionMajor, versionMinor});
+        lua::setfield(L, "version");
+
         lua::rawseti(L, i + 1);
     }
     return 1;