src/game/level/level_editor/undo_history.h

   1 #ifndef UNDO_HISTORY_H_
   2 #define UNDO_HISTORY_H_
   3
   4 #include "ring_buffer.h"
   5
   6 typedef void (*RevertAction)(void *context, size_t context_size);
   7
   8 typedef struct {
   9     RingBuffer actions;
  10     Memory *memory;
  11 } UndoHistory;
  12
  13 UndoHistory *create_undo_history_from_memory(Memory *memory);
  14
  15 void undo_history_push(UndoHistory *undo_history,
  16                        RevertAction revert,
  17                        void *context_data,
  18                        size_t context_data_size);
  19 void undo_history_pop(UndoHistory *undo_history);
  20
  21 void undo_history_clean(UndoHistory *undo_history);
  22
  23 static inline
  24 int undo_history_empty(UndoHistory *undo_history)
  25 {
  26     return undo_history->actions.count == 0;
  27 }
  28
  29 #endif  // UNDO_HISTORY_H_