Add editor saving/loading error messages

Previously, the editor would always say it saved or loaded a level,
even if it was not successful. For example, because a file to load does
not exist, a file to save has illegal characters in its name or the
name is too long to be stored. Now failure is reported. Also, when
quitting the editor and saving before quitting is unsuccessful, the
editor will abort quitting.

desktop_version/src/editor.cpp

@@ -1644,7 +1644,7 @@ int editorclass::findwarptoken(int t)
     return 0;
 }
 
-void editorclass::load(std::string& _path)
+bool editorclass::load(std::string& _path)
 {
     reset();
 
@@ -1694,7 +1694,7 @@ void editorclass::load(std::string& _path)
     if (!FILESYSTEM_loadTiXmlDocument(_path.c_str(), &doc))
     {
         printf("No level %s to load :(\n", _path.c_str());
-        return;
+        return false;
     }
 
 
@@ -1905,9 +1905,11 @@ void editorclass::load(std::string& _path)
 
     gethooks();
     version=2;
+
+    return true;
 }
 
-void editorclass::save(std::string& _path)
+bool editorclass::save(std::string& _path)
 {
     TiXmlDocument doc;
     TiXmlElement* msg;
@@ -2058,7 +2060,7 @@ void editorclass::save(std::string& _path)
     msg->LinkEndChild( new TiXmlText( scriptString.c_str() ));
     data->LinkEndChild( msg );
 
-    FILESYSTEM_saveTiXmlDocument(("levels/" + _path).c_str(), &doc);
+    return FILESYSTEM_saveTiXmlDocument(("levels/" + _path).c_str(), &doc);
 }
 
 
@@ -4048,15 +4050,22 @@ void editorinput()
                 else if(ed.savemod)
                 {
                     std::string savestring=ed.filename+".vvvvvv";
-                    ed.save(savestring);
+                    bool success = ed.save(savestring);
+                    if (success)
+                    {
                         ed.note="[ Saved map: " + ed.filename+ ".vvvvvv]";
+                    }
+                    else
+                    {
+                        ed.note="[ ERROR: Could not save level! ]";
+                    }
                     ed.notedelay=45;
                     ed.savemod=false;
 
                     ed.shiftmenu=false;
                     ed.shiftkey=false;
 
-                    if(ed.saveandquit)
+                    if(ed.saveandquit && success)
                     {
                         //quit editor
                         graphics.fademode = 2;
@@ -4065,8 +4074,15 @@ void editorinput()
                 else if(ed.loadmod)
                 {
                     std::string loadstring=ed.filename+".vvvvvv";
-                    ed.load(loadstring);
+                    bool success = ed.load(loadstring);
+                    if (success)
+                    {
                         ed.note="[ Loaded map: " + ed.filename+ ".vvvvvv]";
+                    }
+                    else
+                    {
+                        ed.note="[ ERROR: Could not load level ]";
+                    }
                     ed.notedelay=45;
                     ed.loadmod=false;
 

desktop_version/src/editor.h

@@ -123,8 +123,8 @@ class editorclass{
 
   int backmatch(int x, int y);
 
-  void load(std::string& _path);
+  bool load(std::string& _path);
-  void save(std::string& _path);
+  bool save(std::string& _path);
   void generatecustomminimap();
   int edgetile(int x, int y);
   int warpzoneedgetile(int x, int y);