Fix event command "Return to Title Screen" (#124)

Fix loading a game after event command "Return to Title Screen" starting a loop.

Data/Scripts/002_Save data/002_SaveData_Value.rb

@@ -75,6 +75,11 @@ module SaveData
       return @loaded
     end
 
+    # Marks value as unloaded.
+    def mark_as_unloaded
+      @loaded = false
+    end
+
     # Uses the {#from_old_format} proc to select the correct data from
     # +old_format+ and return it.
     # Returns nil if the proc is undefined.
@@ -221,6 +226,13 @@ module SaveData
     load_values(save_data) { |value| !value.loaded? }
   end
 
+  # Marks all values that aren't loaded on bootup as unloaded.
+  def self.mark_values_as_unloaded
+    @values.each do |value|
+      value.mark_as_unloaded unless value.load_in_bootup?
+    end
+  end
+
   # Loads each value from the given save data that has
   # been set to be loaded during bootup. Done when a save file exists.
   # @param save_data [Hash] save data to load

Data/Scripts/003_Game processing/002_Scene_Map.rb

@@ -187,6 +187,8 @@ class Scene_Map
     end
     updateSpritesets
     if $game_temp.to_title
+      $game_temp.to_title = false
+      SaveData.mark_values_as_unloaded
       $scene = pbCallTitle
       return
     end