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diff --git a/engines/pegasus/items/inventory/airmask.h b/engines/pegasus/items/inventory/airmask.h
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+++ b/engines/pegasus/items/inventory/airmask.h
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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.
+ *
+ * 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 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_ITEMS_INVENTORY_AIRMASK_H
+#define PEGASUS_ITEMS_INVENTORY_AIRMASK_H
+
+#include "pegasus/hotspot.h"
+#include "pegasus/timers.h"
+#include "pegasus/items/inventory/inventoryitem.h"
+
+namespace Pegasus {
+
+class AirMask : public InventoryItem, private Idler {
+public:
+	AirMask(const tItemID, const tNeighborhoodID, const tRoomID, const tDirectionConstant);
+	virtual ~AirMask();
+
+	virtual void writeToStream(Common::WriteStream *);
+	virtual void readFromStream(Common::ReadStream *);
+
+	virtual void setItemState(const tItemState);
+	void putMaskOn();
+	void takeMaskOff();
+	void toggleItemState();
+	void airQualityChanged();
+
+	bool isAirMaskInUse();
+	bool isAirMaskOn();
+	bool isAirFilterOn();
+
+	void refillAirMask();
+
+	// Returns a percentage
+	uint getAirLeft();
+
+	void activateAirMaskHotspots();
+	void clickInAirMaskHotspot();
+
+protected:
+	static void airMaskTimerExpired(FunctionPtr *, void *);
+
+	virtual void removedFromInventory();
+	virtual void addedToInventory();
+	void useIdleTime();
+
+	Hotspot _toggleSpot;
+	FuseFunction _oxygenTimer;
+};
+
+extern AirMask *g_airMask;
+
+} // End of namespace Pegasus
+
+#endif