X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=src%2Fgame%2Flevel%2Flevel_editor%2Fundo_history.h;h=e5af7ccbefd655566bf38133f085426640bf0a2d;hb=f95f6c77920df1cd11145385a6061afbac9e705f;hp=953bc1cdebc563138a8d5ab8c6c8fba4780c803a;hpb=d3dc4dbed941753d12cc33b40b34a36a0c63cf8f;p=nothing.git

diff --git a/src/game/level/level_editor/undo_history.h b/src/game/level/level_editor/undo_history.h
index 953bc1cd..e5af7ccb 100644
--- a/src/game/level/level_editor/undo_history.h
+++ b/src/game/level/level_editor/undo_history.h
@@ -1,28 +1,32 @@
 #ifndef UNDO_HISTORY_H_
 #define UNDO_HISTORY_H_
 
-#include "layer.h"
+#include "ring_buffer.h"
 
-#define CONTEXT_SIZE 32
+typedef void (*RevertAction)(void *context, size_t context_size);
 
 typedef struct {
-    char data[CONTEXT_SIZE];
-} Context;
+    RingBuffer actions;
+} UndoHistory;
 
-typedef void (*RevertAction)(void *layer, Context context);
+UndoHistory create_undo_history(void);
 
-typedef struct {
-    void *layer;
-    Context context;
-    RevertAction revert;
-} Action;
-
-typedef struct UndoHistory UndoHistory;
+static inline
+void destroy_undo_history(UndoHistory undo_history)
+{
+    destroy_ring_buffer(undo_history.actions);
+}
 
-UndoHistory *create_undo_history(void);
-void destroy_undo_history(UndoHistory *undo_history);
-
-void undo_history_push(UndoHistory *undo_history, Action action);
+void undo_history_push(UndoHistory *undo_history,
+                       RevertAction revert,
+                       void *context_data,
+                       size_t context_data_size);
 void undo_history_pop(UndoHistory *undo_history);
 
+static inline
+int undo_history_empty(UndoHistory *undo_history)
+{
+    return undo_history->actions.count == 0;
+}
+
 #endif  // UNDO_HISTORY_H_