src/game/level/level_editor/undo_history.h

   1 #ifndef UNDO_HISTORY_H_
   2 #define UNDO_HISTORY_H_
   3
   4 #include "layer.h"
   5
   6 #define CONTEXT_SIZE 32
   7
   8 typedef struct {
   9     char data[CONTEXT_SIZE];
  10 } Context;
  11
  12 typedef void (*RevertAction)(void *layer, Context context);
  13
  14 typedef struct {
  15     void *layer;
  16     Context context;
  17     RevertAction revert;
  18 } Action;
  19
  20 typedef struct UndoHistory UndoHistory;
  21
  22 UndoHistory *create_undo_history(void);
  23 void destroy_undo_history(UndoHistory *undo_history);
  24
  25 void undo_history_push(UndoHistory *undo_history, Action action);
  26 void undo_history_pop(UndoHistory *undo_history);
  27
  28 #endif  // UNDO_HISTORY_H_