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engines/crab/item/ItemMenu.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/*
+ * This code is based on the CRAB engine
+ *
+ * Copyright (c) Arvind Raja Yadav
+ *
+ * Licensed under MIT
+ *
+ */
+
+#include "crab/item/ItemMenu.h"
+
+namespace Crab {
+
+using namespace pyrodactyl::ui;
+using namespace pyrodactyl::item;
+using namespace pyrodactyl::people;
+
+//------------------------------------------------------------------------
+// Purpose: Load the layout and items
+//------------------------------------------------------------------------
+void ItemMenu::init(const ItemSlot &ref, const Vector2i &inc, const uint &rows, const uint &cols,
+					const bool &keyboard) {
+	uint size = rows * cols;
+	for (uint i = 0; i < size; ++i) {
+		ItemSlot b;
+		b.init(ref, inc.x * (i % cols), inc.y * (i / cols));
+		_element.push_back(b);
+	}
+
+	_useKeyboard = keyboard;
+	assignPaths();
+}
+
+//------------------------------------------------------------------------
+// Purpose: Load items from file
+//------------------------------------------------------------------------
+void ItemMenu::loadState(rapidxml::xml_node<char> *node) {
+	uint count = 0;
+	for (auto n = node->first_node(); n != nullptr && count < _element.size(); n = n->next_sibling(), ++count)
+		_element[count].loadState(n);
+}
+
+//------------------------------------------------------------------------
+// Purpose: Save to file
+//------------------------------------------------------------------------
+void ItemMenu::saveState(rapidxml::xml_document<> &doc, rapidxml::xml_node<char> *root) {
+	for (auto &i : _element)
+		i.saveState(doc, root);
+}
+
+//------------------------------------------------------------------------
+// Purpose: Handles drag n' drop - return type is Boolean because we only need to communicate stat changes
+//------------------------------------------------------------------------
+void ItemMenu::handleEvents(const Common::Event &event, const int &xOffset, const int &yOffset) {
+	int result = Menu<ItemSlot>::handleEvents(event);
+	if (result != -1) {
+		_selectIndex = result;
+		for (uint i = 0; i < _element.size(); ++i)
+			_element[i].state(i == (uint)_selectIndex);
+	}
+}
+
+//------------------------------------------------------------------------
+// Purpose: Draw the slot backgrounds first, then the items
+//------------------------------------------------------------------------
+void ItemMenu::draw(ItemDesc &itemInfo) {
+	if (_selectIndex != -1)
+		itemInfo.draw(_element[_selectIndex]._item);
+
+	for (auto &i : _element)
+		i.draw();
+}
+
+//------------------------------------------------------------------------
+// Purpose: Equip an item at the first available location (used in events)
+//------------------------------------------------------------------------
+bool ItemMenu::equip(Item &item) {
+	for (auto &i : _element)
+		if (i._category == SLOT_STORAGE && i.equip(item))
+			return true;
+
+	return false;
+}
+
+//------------------------------------------------------------------------
+// Purpose: Remove all instances of an item
+//------------------------------------------------------------------------
+bool ItemMenu::del(const Common::String &id) {
+	bool result = false;
+
+	for (auto &i : _element)
+		if (i._item._id == id) {
+			i._empty = true;
+			i._item.clear();
+			i._unread = false;
+			result = true;
+			break;
+		}
+
+	return result;
+}
+
+//------------------------------------------------------------------------
+// Purpose: Find out if we have an item with a name
+//------------------------------------------------------------------------
+bool ItemMenu::has(const Common::String &container, const Common::String &id) {
+	for (const auto &i : _element)
+		if (i._item._id == id) {
+			if (container == "equip") {
+				if (i._category == SLOT_EQUIP)
+					return true;
+			} else if (container == "storage") {
+				if (i._category == SLOT_STORAGE)
+					return true;
+			} else
+				return true;
+		}
+
+	return false;
+}
+
+//------------------------------------------------------------------------
+// Purpose: Swap an item with another item menu
+//------------------------------------------------------------------------
+bool ItemMenu::swap(ItemMenu &target, int index) {
+	// We need to scan the slots first for an empty slot to store the item.
+	// If no empty slot is found, then swap with a filled slot of same type
+	// If no slot of type is found, don't swap items at all
+	int foundIndex = -1, curIndex = 0;
+
+	for (auto i = _element.begin(); i != _element.end(); ++i, ++curIndex)
+		if (i->_itemType == target._element[index]._itemType) {
+			if (i->_empty) {
+				i->swap(target._element[index]);
+				return true;
+			} else
+				foundIndex = curIndex;
+		}
+
+	if (foundIndex != -1) {
+		_element[foundIndex].swap(target._element[index]);
+		return true;
+	}
+
+	return false;
+}
+
+} // End of namespace Crab