lua: core.open_world

src/engine.cpp

@@ -165,6 +165,12 @@ void Engine::mainloop() {
         } else {
             Window::swapInterval(1);
         }
+
+        while (!postRunnables.empty()) {
+            postRunnables.front()();
+            postRunnables.pop();
+        }
+
         Window::swapBuffers();
         Events::pollEvents();
     }
@@ -311,3 +317,7 @@ ResPaths* Engine::getResPaths() {
 std::shared_ptr<Screen> Engine::getScreen() {
     return screen;
 }
+
+void Engine::postRunnable(runnable callback) {
+    postRunnables.push(callback);
+}

src/engine.h

@@ -1,19 +1,22 @@
 #ifndef SRC_ENGINE_H_
 #define SRC_ENGINE_H_
 
-#include <string>
+#include "delegates.h"
-#include <memory>
-#include <vector>
-#include <stdexcept>
-#include <filesystem>
-#include "typedefs.h"
 #include "settings.h"
+#include "typedefs.h"
 
 #include "assets/Assets.h"
 #include "content/Content.h"
 #include "content/ContentPack.h"
 #include "files/engine_paths.h"
 
+#include <filesystem>
+#include <memory>
+#include <queue>
+#include <stdexcept>
+#include <string>
+#include <vector>
+
 class Level;
 class Screen;
 class EnginePaths;
@@ -39,6 +42,7 @@ class Engine {
     std::vector<ContentPack> contentPacks;
     std::unique_ptr<Content> content = nullptr;
     std::unique_ptr<ResPaths> resPaths = nullptr;
+    std::queue<runnable> postRunnables;
 
     uint64_t frame = 0;
     double lastTime = 0.0;
@@ -106,6 +110,8 @@ public:
 
     /// @brief Get current screen
     std::shared_ptr<Screen> getScreen();
+
+    void postRunnable(runnable callback);
 };
 
 #endif // SRC_ENGINE_H_

src/logic/scripting/lua/libcore.cpp

@@ -3,6 +3,7 @@
 
 #include "../../../engine.h"
 #include "../../../files/engine_paths.h"
+#include "../../../frontend/menu/menu.h"
 #include "../scripting.h"
 
 #include <vector>
@@ -19,7 +20,15 @@ static int l_get_worlds_list(lua_State* L) {
     return 1;
 }
 
+static int l_open_world(lua_State* L) {
+    auto name = lua_tostring(L, 1);
+    scripting::engine->setScreen(nullptr);
+    menus::open_world(name, scripting::engine, false);
+    return 0;
+}
+
 const luaL_Reg corelib [] = {
     {"get_worlds_list", lua_wrap_errors<l_get_worlds_list>},
+    {"open_world", lua_wrap_errors<l_open_world>},
     {NULL, NULL}
 };