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engines/mads/inventory.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/>.
+ *
+ */
+
+#include "common/scummsys.h"
+#include "mads/mads.h"
+#include "mads/inventory.h"
+
+namespace MADS {
+
+void InventoryObject::synchronize(Common::Serializer &s) {
+	s.syncAsUint16LE(_descId);
+	s.syncAsUint16LE(_roomNumber);
+	s.syncAsByte(_article);
+	s.syncAsByte(_vocabCount);
+	s.syncAsByte(_qualitiesCount);
+	s.skip(1);
+
+	for (int i = 0; i < MAX_VOCAB; ++i) {
+		s.syncAsUint16LE(_vocabList[i]._vocabId);
+		s.syncAsByte(_vocabList[i]._verbType);
+		s.syncAsByte(_vocabList[i]._prepType);
+	}
+
+	for (int i = 0; i < MAX_QUALITIES; ++i)
+		s.syncAsByte(_qualityId[i]);
+	for (int i = 0; i < MAX_QUALITIES; ++i)
+		s.syncAsSint32LE(_qualityValue[i]);
+}
+
+bool InventoryObject::hasQuality(int qualityId) const {
+	for (int i = 0; i < _qualitiesCount; ++i) {
+		if (_qualityId[i] == qualityId)
+			return true;
+	}
+
+	return false;
+}
+
+void InventoryObject::setQuality(int qualityId, int qualityValue) {
+	for (int i = 0; i < _qualitiesCount; ++i) {
+		if (_qualityId[i] == qualityId) {
+			_qualityValue[i] = qualityValue;
+		}
+	}
+}
+
+int InventoryObject::getQuality(int qualityId) const {
+	for (int i = 0; i < _qualitiesCount; ++i) {
+		if (_qualityId[i] == qualityId) {
+			return _qualityValue[i];
+		}
+	}
+
+	return 0;
+}
+
+/*------------------------------------------------------------------------*/
+
+void InventoryObjects::load() {
+	File f("*OBJECTS.DAT");
+	int count = f.readUint16LE();
+	Common::Serializer s(&f, nullptr);
+
+	// Load the objects data
+	reserve(count);
+	for (int i = 0; i < count; ++i) {
+		InventoryObject obj;
+		obj.synchronize(s);
+		push_back(obj);
+
+		// If it's for the player's inventory, add the index to the inventory list
+		if (obj._roomNumber == PLAYER_INVENTORY) {
+			_inventoryList.push_back(i);
+			assert(_inventoryList.size() <= 32);
+		}
+	}
+}
+
+void InventoryObjects::synchronize(Common::Serializer &s) {
+	int count = size();
+	s.syncAsUint16LE(count);
+
+	if (s.isSaving()) {
+		// Store the data for each object in the inventory lsit
+		for (int idx = 0; idx < count; ++idx)
+			(*this)[idx].synchronize(s);
+
+		// Synchronize the player's inventory
+		_inventoryList.synchronize(s);
+	} else {
+		clear();
+
+		// Read in each object
+		reserve(count);
+		for (int i = 0; i < count; ++i) {
+			InventoryObject obj;
+			obj.synchronize(s);
+			push_back(obj);
+		}
+
+		// Synchronize the player's inventory
+		_inventoryList.synchronize(s);
+	}
+}
+
+void InventoryObjects::setRoom(int objectId, int sceneNumber) {
+	InventoryObject &obj = (*this)[objectId];
+
+	if (obj._roomNumber == PLAYER_INVENTORY)
+		removeFromInventory(objectId, 1);
+
+	if (sceneNumber == PLAYER_INVENTORY)
+		addToInventory(objectId);
+	else
+		obj._roomNumber = sceneNumber;
+}
+
+bool InventoryObjects::isInRoom(int objectId) const {
+	return objectId >= 0 && (*this)[objectId]._roomNumber == _vm->_game->_scene._currentSceneId;
+}
+
+bool InventoryObjects::isInInventory(int objectId) const {
+	return objectId >= 0 && (*this)[objectId]._roomNumber == PLAYER_INVENTORY;
+}
+
+void InventoryObjects::addToInventory(int objectId) {
+	assert(_inventoryList.size() < 32);
+	UserInterface &userInterface = _vm->_game->_scene._userInterface;
+
+	if (!isInInventory(objectId)) {
+		_inventoryList.push_back(objectId);
+		userInterface._selectedInvIndex = _inventoryList.size() - 1;
+		userInterface._inventoryTopIndex = CLIP(userInterface._inventoryTopIndex,
+			0, userInterface._selectedInvIndex);
+
+		if ((userInterface._inventoryTopIndex + 5) <= (int)_inventoryList.size())
+			userInterface._inventoryTopIndex = _inventoryList.size() - 5;
+		userInterface._inventoryChanged = true;
+
+		(*this)[objectId]._roomNumber = PLAYER_INVENTORY;
+
+		if (_vm->_game->_kernelMode == KERNEL_ACTIVE_CODE &&
+				_vm->_game->_screenObjects._inputMode == kInputBuildingSentences) {
+			userInterface.categoryChanged();
+			userInterface.selectObject(userInterface._selectedInvIndex);
+		}
+	}
+}
+
+void InventoryObjects::removeFromInventory(int objectId, int newScene) {
+	Scene &scene = _vm->_game->_scene;
+	UserInterface &userInterface = scene._userInterface;
+
+	// Scan the inventory list for the object
+	int invIndex = -1;
+	for (int idx = 0; idx < (int)_inventoryList.size() && invIndex == -1; ++idx) {
+		if (_inventoryList[idx] == objectId)
+			invIndex = idx;
+	}
+
+	// If the object isn't in the player's inventory, stop here
+	if (invIndex < 0)
+		return;
+
+	int selectedIndex = userInterface._selectedInvIndex;
+	bool noSelection = selectedIndex < 0;
+
+	if (_vm->_game->_kernelMode == KERNEL_ACTIVE_CODE &&
+			_vm->_game->_screenObjects._inputMode == kInputBuildingSentences)
+		userInterface.selectObject(-1);
+
+	// Remove the item from the inventory list
+	_inventoryList.remove_at(invIndex);
+
+	if (!noSelection) {
+		if (selectedIndex >= invIndex)
+			--selectedIndex;
+		if (selectedIndex < 0 && _inventoryList.size() > 0)
+			selectedIndex = 0;
+	}
+
+	if (invIndex <= userInterface._inventoryTopIndex) {
+		userInterface._inventoryTopIndex = MAX(userInterface._inventoryTopIndex, 0);
+	}
+
+	userInterface._inventoryChanged = true;
+	(*this)[objectId]._roomNumber = newScene;
+
+	if (_vm->_game->_kernelMode == KERNEL_ACTIVE_CODE &&
+			_vm->_game->_screenObjects._inputMode == kInputBuildingSentences) {
+		userInterface.categoryChanged();
+		userInterface.selectObject(selectedIndex);
+	}
+}
+
+int InventoryObjects::getIdFromDesc(int descId) {
+	for (int i = 0; i < (int)size(); ++i) {
+		InventoryObject &obj = (*this)[i];
+		if (obj._descId == descId)
+			return i;
+	}
+
+	return -1;
+}
+
+} // End of namespace MADS