More fixes

core/src/gui/menu.cpp

@@ -9,6 +9,9 @@ void Menu::registerEntry(std::string name, void (*drawHandler)(void* ctx), void*
     item.drawHandler = drawHandler;
     item.ctx = ctx;
     items[name] = item;
+    if (!isInOrderList(name)) {
+        order.push_back(name);
+    }
 }
 
 void Menu::removeEntry(std::string name) {
@@ -18,7 +21,21 @@ void Menu::removeEntry(std::string name) {
 void Menu::draw() {
     MenuItem_t item;
     for (std::string name : order) {
+        if (items.find(name) == items.end()) {
+            continue;
+        }
         item = items[name];
-        item.drawHandler(item.ctx);
+        if (ImGui::CollapsingHeader(name.c_str(), ImGuiTreeNodeFlags_DefaultOpen)) {
+            item.drawHandler(item.ctx);
+        }
     }
 }
+
+bool Menu::isInOrderList(std::string name) {
+    for (std::string _name : order) {
+        if (_name == name) {
+            return true;
+        }
+    }
+    return false;
+}