Allow Gamemodes to interrupt flow on file creation

src/dusk/gamemode.hpp

@@ -1,6 +1,7 @@
 #pragma once
 #include <functional>
 #include <map>
+#include "d/d_file_select.h"
 
 namespace dusk::gamemode {
 using GamemodeId = std::string;
@@ -50,6 +51,13 @@ public:
             mOnNewSaveFunction();
         }
     }
+    
+    bool invokeOnNewSaveSelectFunction(dFile_select_c* fileSelect) const {
+        if (mOnNewSaveSelectFunction) {
+            return mOnNewSaveSelectFunction(fileSelect);
+        }
+        return true;
+    }
 
     void invokeOnGameResetFunction() const {
         if (mOnGameResetFunction) {
@@ -68,6 +76,7 @@ public:
     std::function<void()> mOnPlayFunction;
     std::function<void()> mOnSaveLoadedFunction;
     std::function<void()> mOnNewSaveFunction;
+    std::function<bool(dFile_select_c* fileSelect)> mOnNewSaveSelectFunction;
     std::function<void()> mOnGameResetFunction;
     std::function<void()> mOnTickFunction;
 };

src/dusk/mods/svc/gamemode.cpp

@@ -65,16 +65,10 @@ ModResult register_gamemode(ModContext* ctx, const GamemodeDesc* desc) {
         }
     }
 
-    std::string saveName;
-    if (!desc->saveName) {
-        Log.warn("Attempted to register gamemode {} with a null save name! Defaulting to: (gczelda2)",id);
+    std::string saveName = desc->saveName;
+    if (saveName.empty()) {
+        Log.warn("Attempted to register gamemode {} with an empty save name! Defaulting to: (gczelda2)",id);
         saveName = "gczelda2";
-    }else{
-        saveName = desc->saveName;
-        if (saveName.empty()) {
-            Log.warn("Attempted to register gamemode {} with an empty save name! Defaulting to: (gczelda2)",id);
-            saveName = "gczelda2";
-        }
     }
    
     dusk::gamemode::Gamemode gamemode(id, fullName, saveName);
@@ -94,6 +88,9 @@ ModResult register_gamemode(ModContext* ctx, const GamemodeDesc* desc) {
     if (desc->onNewSaveFunction) {
         gamemode.mOnNewSaveFunction = desc->onNewSaveFunction;
     }
+    if (desc->onNewSaveSelectFunction) {
+        gamemode.mOnNewSaveSelectFunction = desc->onNewSaveSelectFunction;
+    }
     if (desc->onGameResetFunction) {
         gamemode.mOnGameResetFunction = desc->onGameResetFunction;
     }