1 files changed, 106 insertions, 0 deletions
diff --git a/engines/pegasus/items/biochips/mapchip.cpp b/engines/pegasus/items/biochips/mapchip.cpp
new file mode 100644
index 0000000000..69050d5193
--- /dev/null
+++ b/engines/pegasus/items/biochips/mapchip.cpp
@@ -0,0 +1,106 @@
+/* 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.
+ *
+ */
+
+#include "pegasus/gamestate.h"
+#include "pegasus/ai/ai_area.h"
+#include "pegasus/items/biochips/mapchip.h"
+#include "pegasus/neighborhood/neighborhood.h"
+
+namespace Pegasus {
+
+MapChip *g_map = 0;
+
+MapChip::MapChip(const ItemID id, const NeighborhoodID neighborhood, const RoomID room, const DirectionConstant direction) :
+		BiochipItem(id, neighborhood, room, direction) {
+	g_map = this;
+	setItemState(kMapUnavailable);
+}
+
+MapChip::~MapChip() {
+	g_map = 0;
+}
+
+void MapChip::writeToStream(Common::WriteStream *stream) {
+	return _image.writeToStream(stream);
+}
+
+void MapChip::readFromStream(Common::ReadStream *stream) {
+	return _image.readFromStream(stream);
+}
+
+void MapChip::select() {
+	BiochipItem::select();
+	moveToMapLocation(GameState.getCurrentNeighborhood(), GameState.getCurrentRoom(), GameState.getCurrentDirection());
+	_image.show();
+}
+
+void MapChip::takeSharedArea() {
+	_image.show();
+}
+
+void MapChip::giveUpSharedArea() {
+	_image.hide();
+}
+
+void MapChip::deselect() {
+	BiochipItem::deselect();
+	_image.unloadImage();
+}
+
+void MapChip::moveToMapLocation(const NeighborhoodID neighborhood, const RoomID room, const DirectionConstant dir) {
+	AirQuality airQuality;
+
+	if (g_neighborhood)
+		airQuality = g_neighborhood->getAirQuality(room);
+	else
+		airQuality = kAirQualityGood;
+
+	switch (neighborhood) {
+	case kMarsID:
+		if (airQuality == kAirQualityVacuum) {
+			if (room >= kMars35 && room <= kMars39) {
+				setItemState(kMapEngaged);
+				if (isSelected() && g_AIArea && g_AIArea->getMiddleAreaOwner() == kBiochipSignature)
+					_image.loadGearRoomIfNecessary();
+			} else {
+				setItemState(kMapEngaged);
+				if (isSelected() && g_AIArea && g_AIArea->getMiddleAreaOwner() == kBiochipSignature)
+					_image.loadMazeIfNecessary();
+			}
+
+			_image.moveToMapLocation(neighborhood, room, dir);
+		} else {
+			_image.unloadImage();
+			setItemState(kMapUnavailable);
+		}
+		break;
+	default:
+		_image.unloadImage();
+		setItemState(kMapUnavailable);
+		break;
+	}
+}
+
+} // End of namespace Pegasus