Filesystem update.

neo/engine/tools/radiant/Undo.h

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+/*
+===========================================================================
+
+IceTech GPL Source Code
+Copyright (C) 2026 Justin Marshall 
+
+This file is part of the IceTech GPL Source Code (?IceTech Source Code?).  
+
+IceTech Source Code is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+IceTech Source Code is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with IceTech Source Code.  If not, see <http://www.gnu.org/licenses/>.
+
+In addition, the IceTech Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the IceTech Source Code.  If not, please request a copy in writing from id Software at the address below.
+
+If you have questions concerning this license or the applicable additional terms, you may contact in writing Justin Marshall, justinmarshall20@gmail.com
+
+===========================================================================
+*/
+
+//start operation
+void Undo_Start(char *operation);
+//end operation
+void Undo_End(void);
+//add brush to the undo
+void Undo_AddBrush(brush_t *pBrush);
+//add a list with brushes to the undo
+void Undo_AddBrushList(brush_t *brushlist);
+//end a brush after the operation is performed
+void Undo_EndBrush(brush_t *pBrush);
+//end a list with brushes after the operation is performed
+void Undo_EndBrushList(brush_t *brushlist);
+//add entity to undo
+void Undo_AddEntity(entity_t *entity);
+//end an entity after the operation is performed
+void Undo_EndEntity(entity_t *entity);
+//undo last operation
+void Undo_Undo(void);
+//redo last undone operation
+void Undo_Redo(void);
+//returns true if there is something to be undone available
+int  Undo_UndoAvailable(void);
+//returns true if there is something to redo available
+int  Undo_RedoAvailable(void);
+//clear the undo buffer
+void Undo_Clear(void);
+//set maximum undo size (default 64)
+void Undo_SetMaxSize(int size);
+//get maximum undo size
+int  Undo_GetMaxSize(void);
+//set maximum undo memory in bytes (default 2 MB)
+void Undo_SetMaxMemorySize(int size);
+//get maximum undo memory in bytes
+int  Undo_GetMaxMemorySize(void);
+//returns the amount of memory used by undo
+int  Undo_MemorySize(void);
+