(61d00a474) v0.9.7.1

2020-03-04 13:04:10 +01:00
parent 3c50efa5c9
commit 3c09ebe02f
5086 changed files with 786063 additions and 295871 deletions
@@ -0,0 +1,62 @@
+using System.Collections.Generic;
+using System.Linq;
+
+namespace Barotrauma
+{
+    interface IMemorizable<T>
+    {
+        Memento<T> Memento { get; }
+        void StoreSnapshot();
+        void Undo();
+        void Redo();
+        void ClearHistory();
+    }
+
+    public class Memento<T>
+    {
+        public T Current { get; private set; }
+
+        public int UndoCount => undoStack.Count;
+        public int RedoCount => redoStack.Count;
+
+        private Stack<T> undoStack = new Stack<T>();
+        private Stack<T> redoStack = new Stack<T>();
+
+        public void Store(T newState)
+        {
+            redoStack.Clear();
+            if (Current != null && !Current.Equals(default(T)))
+            {
+                undoStack.Push(Current);
+            }
+            Current = newState;
+        }
+
+        public T Undo()
+        {
+            if (undoStack.Any())
+            {
+                redoStack.Push(Current);
+                Current = undoStack.Pop();
+            }
+            return Current;
+        }
+
+        public T Redo()
+        {
+            if (redoStack.Any())
+            {
+                undoStack.Push(Current);
+                Current = redoStack.Pop();
+            }
+            return Current;
+        }
+
+        public void Clear()
+        {
+            undoStack.Clear();
+            redoStack.Clear();
+            Current = default(T);
+        }
+    }
+}