From 9c03a930498206bfa05de06ed838a74c8dd84a24 Mon Sep 17 00:00:00 2001
From: Daniel Karbach <daniel.karbach@localhorst.tv>
Date: Sat, 17 Nov 2012 14:19:03 +0100
Subject: [PATCH] implemented inventory item swapping

---
 src/common/Inventory.cpp   |  4 ++++
 src/common/Inventory.h     |  1 +
 src/main.cpp               |  2 +-
 src/menu/InventoryMenu.cpp | 27 ++++++++++++++++++++++++++-
 4 files changed, 32 insertions(+), 2 deletions(-)

diff --git a/src/common/Inventory.cpp b/src/common/Inventory.cpp
index 6a6af81..e7dbe72 100644
--- a/src/common/Inventory.cpp
+++ b/src/common/Inventory.cpp
@@ -83,4 +83,8 @@ bool Inventory::Entry::Less(const Entry &lhs, const Entry &rhs) {
 	}
 }
 
+void Inventory::SwapEntriesAt(int lhs, int rhs) {
+	std::swap(entries[lhs], entries[rhs]);
+}
+
 }
diff --git a/src/common/Inventory.h b/src/common/Inventory.h
index f80368c..db6c705 100644
--- a/src/common/Inventory.h
+++ b/src/common/Inventory.h
@@ -29,6 +29,7 @@ public:
 	int ItemCountAt(int offset) const { return entries[offset].count; }
 
 	void Sort();
+	void SwapEntriesAt(int lhs, int rhs);
 
 private:
 	struct Entry {
diff --git a/src/main.cpp b/src/main.cpp
index 1fc702b..b47a473 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -386,7 +386,7 @@ int main(int argc, char **argv) {
 		inventoryMenuProperties.charsPerEntry = 13;
 		inventoryMenuProperties.rowGap = 8;
 		inventoryMenuProperties.cursor = &menuCursor;
-		itemMenuProperties.selectedCursor = &menuActiveCursor;
+		inventoryMenuProperties.selectedCursor = &menuActiveCursor;
 		inventoryMenuProperties.font = &menuFont;
 		// TODO: disabled font
 		inventoryMenuProperties.disabledFont = &menuFont;
diff --git a/src/menu/InventoryMenu.cpp b/src/menu/InventoryMenu.cpp
index 429fefe..bdd94ce 100644
--- a/src/menu/InventoryMenu.cpp
+++ b/src/menu/InventoryMenu.cpp
@@ -23,6 +23,7 @@ using common::Item;
 using geometry::Vector;
 using graphics::Font;
 using graphics::Frame;
+using std::swap;
 
 namespace menu {
 
@@ -99,14 +100,38 @@ void InventoryMenu::HandleEvents(const Input &input) {
 				menu.SetSelected();
 				itemMenu.SetActive();
 			}
+		} else if (itemMenu.IsActive()) {
+			itemMenu.SetDualSelection();
+		} else if (itemMenu.SelectedIndex() == itemMenu.SecondaryIndex()) {
+			switch (menu.Selected()) {
+				case CHOICE_USE:
+					// TODO: implement item use
+					break;
+				case CHOICE_SORT:
+					// invalid state, recover
+					menu.SetActive();
+					itemMenu.SetInactive();
+					break;
+				case CHOICE_DROP:
+					// TODO: implement item drop
+					break;
+			}
+		} else {
+			parent->Game().state->inventory.SwapEntriesAt(
+					itemMenu.SelectedIndex(),
+					itemMenu.SecondaryIndex());
+			itemMenu.SwapSelected();
+			itemMenu.SetActive();
 		}
 	}
 	if (input.JustPressed(Input::ACTION_B)) {
 		if (menu.IsActive()) {
 			Ctrl().PopState();
-		} else {
+		} else if (itemMenu.IsActive()) {
 			menu.SetActive();
 			itemMenu.SetInactive();
+		} else {
+			itemMenu.SetActive();
 		}
 	}
 }
-- 
2.39.2