PEGASUS: Import the CInventory class

engines/pegasus/Game_Shell/CInventory.cpp

@@ -0,0 +1,175 @@
+/* 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
+ *
+ * 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 2
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "pegasus/Game_Shell/CItem.h"
+#include "pegasus/Game_Shell/CInventory.h"
+#include "pegasus/Game_Shell/Headers/Game_Shell_Constants.h"
+
+namespace Pegasus {
+
+CInventory::CInventory() {
+	fWeightLimit = 100;
+	fOwnerID = kNoActorID;
+	fReferenceCount = 0;
+}
+
+CInventory::~CInventory() {
+}
+
+void CInventory::SetWeightLimit(tWeightType limit) {
+	fWeightLimit = limit;
+	//	*** What to do if the new weight limit is greater than the current weight?
+}
+
+tWeightType CInventory::GetWeight() {
+	tWeightType	result = 0;
+
+	for (CItemIterator it = fInventoryList.begin(); it != fInventoryList.end(); it++)
+		result += (*it)->GetItemWeight();
+
+	return result;
+}
+
+//	If the item already belongs, just return kInventoryOK.
+tInventoryResult CInventory::AddItem(CItem *item) {
+	if (ItemInInventory(item))
+		return kInventoryOK;
+
+	if (GetWeight() + item->GetItemWeight() > fWeightLimit)
+		return kTooMuchWeight;
+
+	fInventoryList.push_back(item);
+	item->SetItemOwner(fOwnerID);
+
+	++fReferenceCount;
+	return kInventoryOK;
+}
+
+tInventoryResult CInventory::RemoveItem(CItem *item) {
+	for (CItemIterator it = fInventoryList.begin(); it != fInventoryList.end(); it++) {
+		if (*it == item) {
+			fInventoryList.erase(it);
+			item->SetItemOwner(kNoActorID);
+
+			++fReferenceCount;
+			return kInventoryOK;
+		}
+	}
+
+	return kItemNotInInventory;
+}
+
+tInventoryResult CInventory::RemoveItem(tItemID id) {
+	CItem *item = FindItemByID(id);
+
+	if (item) {
+		fInventoryList.remove(item);
+		item->SetItemOwner(kNoActorID);
+
+		++fReferenceCount;
+		return kInventoryOK;
+	}
+
+	return kItemNotInInventory;
+}
+
+void CInventory::RemoveAllItems() {
+	fInventoryList.clear();
+	++fReferenceCount;
+}
+
+bool CInventory::ItemInInventory(CItem *item) {
+	for (CItemIterator it = fInventoryList.begin(); it != fInventoryList.end(); it++)
+		if (*it == item)
+			return true;
+
+	return false;
+}
+
+bool CInventory::ItemInInventory(tItemID id) {
+	return FindItemByID(id) != NULL;
+}
+
+CItem *CInventory::GetItemAt(int32 index) {
+	int32 i = 0;
+	for (CItemIterator it = fInventoryList.begin(); it != fInventoryList.end(); it++, i++)
+		if (i == index)
+			return *it;
+
+	return 0;
+}
+
+tItemID CInventory::GetItemIDAt(int32 index) {
+	CItem *item = GetItemAt(index);
+
+	if (item)
+		return item->GetObjectID();
+
+	return kNoItemID;
+}
+
+CItem *CInventory::FindItemByID(tItemID id) {
+	return fInventoryList.FindItemByID(id);
+}
+
+//	Return -1 if not found.
+
+int32 CInventory::FindIndexOf(CItem *item) {
+	uint32 i = 0;
+	for (CItemIterator it = fInventoryList.begin(); it != fInventoryList.end(); it++, i++)
+		if (*it == item)
+			return i;
+
+	return -1;
+}
+
+//	Return -1 if not found.
+
+int32 CInventory::FindIndexOf(tItemID id) {
+	uint32 i = 0;
+	for (CItemIterator it = fInventoryList.begin(); it != fInventoryList.end(); it++, i++)
+		if ((*it)->GetObjectID() == id)
+			return i;
+
+	return -1;
+}
+
+tWeightType CInventory::GetWeightLimit() {
+	return fWeightLimit;
+}
+
+int32 CInventory::GetNumItems() {
+	return fInventoryList.size();
+}
+
+void CInventory::SetOwnerID(const tActorID id) {
+	fOwnerID = id;
+}
+
+tActorID CInventory::GetOwnerID() const {
+	return fOwnerID;
+}
+
+} // End of namespae Pegasus

engines/pegasus/Game_Shell/CInventory.h

@@ -0,0 +1,80 @@
+/* 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
+ *
+ * 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 2
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef PEGASUS_GAMESHELL_CINVENTORY_H
+#define PEGASUS_GAMESHELL_CINVENTORY_H
+
+#include "pegasus/Game_Shell/CItemList.h"
+#include "pegasus/Game_Shell/Headers/Game_Shell_Types.h"
+
+namespace Pegasus {
+
+class CItem;
+
+//	Inventories have a "current item". This item is the default item the player can
+//	use. In a text adventure system, the current item would be "it", as in
+//	"Hit the troll with it," where "it" would refer to some weapon which is the current
+//	item. In a graphic adventure, the current item would be the item the user selects
+//	to use with the mouse or other pointing device.
+
+class CInventory {
+public:
+	CInventory();
+	virtual ~CInventory();
+
+	tWeightType GetWeightLimit();
+	void SetWeightLimit(tWeightType limit);
+	tWeightType GetWeight();
+
+	virtual tInventoryResult AddItem(CItem *item);
+	virtual tInventoryResult RemoveItem(CItem *item);
+	virtual tInventoryResult RemoveItem(tItemID id);
+	virtual bool ItemInInventory(CItem *item);
+	virtual bool ItemInInventory(tItemID id);
+	virtual CItem *GetItemAt(int32 index);
+	virtual tItemID GetItemIDAt(int32 index);
+	virtual CItem *FindItemByID(tItemID id);
+	virtual int32 FindIndexOf(CItem *item);
+	virtual int32 FindIndexOf(tItemID id);
+	int32 GetNumItems();
+	virtual void RemoveAllItems();
+
+	void SetOwnerID(const tActorID id);
+	tActorID GetOwnerID() const;
+
+	uint32 GetReferenceCount() { return fReferenceCount; }
+
+protected:
+	tWeightType fWeightLimit;
+	tActorID fOwnerID;
+	CItemList fInventoryList;
+
+private:
+	uint32 fReferenceCount;
+};
+
+} // End of namespace Pegasus
+
+#endif

engines/pegasus/module.mk

@@ -9,6 +9,7 @@ MODULE_OBJS = \
 	overview.o \
 	pegasus.o \
 	video.o \
+	Game_Shell/CInventory.o \
 	Game_Shell/CItem.o \
 	Game_Shell/CItemList.o \
 	MMShell/Base_Classes/MMFunctionPtr.o \