1 files changed, 47 insertions, 0 deletions
diff --git a/Minecraft.World/MenuBackup.cpp b/Minecraft.World/MenuBackup.cpp
new file mode 100644
index 00000000..6d09f3e3
--- /dev/null
+++ b/Minecraft.World/MenuBackup.cpp
@@ -0,0 +1,47 @@
+#include "stdafx.h"
+#include "net.minecraft.world.item.h"
+#include "net.minecraft.world.entity.player.h"
+#include "AbstractContainerMenu.h"
+#include "Slot.h"
+#include "MenuBackup.h"
+
+MenuBackup::MenuBackup(shared_ptr<Inventory> inventory, AbstractContainerMenu *menu)
+{
+	backups = new unordered_map<short, ItemInstanceArray *>();
+
+	this->inventory = inventory;
+	this->menu = menu;
+}
+
+void MenuBackup::save(short changeUid)
+{
+	ItemInstanceArray *backup = new ItemInstanceArray( (int)menu->slots->size() + 1 );
+	(*backup)[0] = ItemInstance::clone(inventory->getCarried());
+	for (unsigned int i = 0; i < menu->slots->size(); i++)
+	{
+		(*backup)[i + 1] = ItemInstance::clone(menu->slots->at(i)->getItem());
+	}
+	// TODO Is unordered_map use correct?
+	// Was backups.put(changeUid, backup);
+	(*backups)[changeUid] = backup;
+}
+
+// Cannot use delete as function name as it is a reserved keyword
+void MenuBackup::deleteBackup(short changeUid)
+{
+	// TODO Is the unordered_map use correct?
+	// 4J Was backups.remove(changeUid);
+	backups->erase(changeUid);
+}
+
+void MenuBackup::rollback(short changeUid)
+{
+	ItemInstanceArray *backup = backups->at(changeUid);
+	backups->clear();
+	inventory->setCarried( (*backup)[0] );
+	for (unsigned int i = 0; i < menu->slots->size(); i++)
+	{
+		menu->slots->at(i)->set( (*backup)[i + 1] );
+	}
+
+}
+\ No newline at end of file