Initial commit

engines/pegasus/items/inventory.cpp

@@ -0,0 +1,174 @@
+/* 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.
+ *
+ * Additional copyright for this file:
+ * Copyright (C) 1995-1997 Presto Studios, Inc.
+ *
+ * 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/>.
+ *
+ */
+
+#include "pegasus/constants.h"
+#include "pegasus/items/item.h"
+#include "pegasus/items/inventory.h"
+
+namespace Pegasus {
+
+Inventory::Inventory() {
+	_weightLimit = 100;
+	_ownerID = kNoActorID;
+	_referenceCount = 0;
+}
+
+Inventory::~Inventory() {
+}
+
+void Inventory::setWeightLimit(WeightType limit) {
+	_weightLimit = limit;
+	// *** What to do if the new weight limit is greater than the current weight?
+}
+
+WeightType Inventory::getWeight() {
+	WeightType	result = 0;
+
+	for (ItemIterator it = _inventoryList.begin(); it != _inventoryList.end(); it++)
+		result += (*it)->getItemWeight();
+
+	return result;
+}
+
+// If the item already belongs, just return kInventoryOK.
+InventoryResult Inventory::addItem(Item *item) {
+	if (itemInInventory(item))
+		return kInventoryOK;
+
+	if (getWeight() + item->getItemWeight() > _weightLimit)
+		return kTooMuchWeight;
+
+	_inventoryList.push_back(item);
+	item->setItemOwner(_ownerID);
+
+	++_referenceCount;
+	return kInventoryOK;
+}
+
+InventoryResult Inventory::removeItem(Item *item) {
+	for (ItemIterator it = _inventoryList.begin(); it != _inventoryList.end(); it++) {
+		if (*it == item) {
+			_inventoryList.erase(it);
+			item->setItemOwner(kNoActorID);
+
+			++_referenceCount;
+			return kInventoryOK;
+		}
+	}
+
+	return kItemNotInInventory;
+}
+
+InventoryResult Inventory::removeItem(ItemID id) {
+	Item *item = findItemByID(id);
+
+	if (item) {
+		_inventoryList.remove(item);
+		item->setItemOwner(kNoActorID);
+
+		++_referenceCount;
+		return kInventoryOK;
+	}
+
+	return kItemNotInInventory;
+}
+
+void Inventory::removeAllItems() {
+	_inventoryList.clear();
+	++_referenceCount;
+}
+
+bool Inventory::itemInInventory(Item *item) {
+	for (ItemIterator it = _inventoryList.begin(); it != _inventoryList.end(); it++)
+		if (*it == item)
+			return true;
+
+	return false;
+}
+
+bool Inventory::itemInInventory(ItemID id) {
+	return findItemByID(id) != nullptr;
+}
+
+Item *Inventory::getItemAt(int32 index) {
+	int32 i = 0;
+	for (ItemIterator it = _inventoryList.begin(); it != _inventoryList.end(); it++, i++)
+		if (i == index)
+			return *it;
+
+	return nullptr;
+}
+
+ItemID Inventory::getItemIDAt(int32 index) {
+	Item *item = getItemAt(index);
+
+	if (item)
+		return item->getObjectID();
+
+	return kNoItemID;
+}
+
+Item *Inventory::findItemByID(ItemID id) {
+	return _inventoryList.findItemByID(id);
+}
+
+// Return -1 if not found.
+
+int32 Inventory::findIndexOf(Item *item) {
+	uint32 i = 0;
+	for (ItemIterator it = _inventoryList.begin(); it != _inventoryList.end(); it++, i++)
+		if (*it == item)
+			return i;
+
+	return -1;
+}
+
+// Return -1 if not found.
+
+int32 Inventory::findIndexOf(ItemID id) {
+	uint32 i = 0;
+	for (ItemIterator it = _inventoryList.begin(); it != _inventoryList.end(); it++, i++)
+		if ((*it)->getObjectID() == id)
+			return i;
+
+	return -1;
+}
+
+WeightType Inventory::getWeightLimit() {
+	return _weightLimit;
+}
+
+int32 Inventory::getNumItems() {
+	return _inventoryList.size();
+}
+
+void Inventory::setOwnerID(const ActorID id) {
+	_ownerID = id;
+}
+
+ActorID Inventory::getOwnerID() const {
+	return _ownerID;
+}
+
+} // End of namespae Pegasus