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engines/hugo/route.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.
+ *
+ * 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/>.
+ *
+ */
+
+/*
+ * This code is based on original Hugo Trilogy source code
+ *
+ * Copyright (c) 1989-1995 David P. Gray
+ *
+ */
+
+#ifndef HUGO_ROUTE_H
+#define HUGO_ROUTE_H
+
+#include "common/rect.h"
+
+namespace Hugo {
+
+/**
+ * Purpose of an automatic route
+ */
+enum RouteType {kRouteSpace, kRouteExit, kRouteLook, kRouteGet};
+
+struct Segment {                                    // Search segment
+	int16 _y;                                       // y position
+	int16 _x1, _x2;                                 // Range of segment
+};
+
+class Route {
+public:
+	Route(HugoEngine *vm);
+
+	void  resetRoute();
+	int16 getRouteIndex() const;
+
+	void processRoute();
+	bool startRoute(const RouteType routeType, const int16 objId, int16 cx, int16 cy);
+	void setDirection(const uint16 keyCode);
+	void setWalk(const uint16 direction);
+
+private:
+	HugoEngine *_vm;
+
+	static const int kMapBound = 1;                 // Mark a boundary outline
+	static const int kMapFill = 2;                  // Mark a boundary filled
+	static const int kMaxSeg = 256;                 // Maximum number of segments
+	static const int kMaxNodes = 256;               // Maximum nodes in route
+
+	uint16 _oldWalkDirection;                       // Last direction char
+
+	int16     _routeIndex;                          // Index into route list, or -1
+	RouteType _routeType;                           // Purpose of an automatic route
+	int16     _routeObjId;                          // Index of exit of object walking to
+
+	byte _boundaryMap[kYPix][kXPix];                // Boundary byte map
+	Segment _segment[kMaxSeg];                      // List of points in fill-path
+	Common::Point _route[kMaxNodes];                // List of nodes in route (global)
+	int16 _segmentNumb;                             // Count number of segments
+	int16 _routeListIndex;                          // Index into route list
+	int16 _destX;
+	int16 _destY;
+	int16 _heroWidth;                               // Hero width
+	bool  _routeFoundFl;                            // TRUE when path found
+	bool  _fullSegmentFl;                           // Segments exhausted
+
+	// CHECKME: Never set to true, could be removed
+	bool  _fullStackFl;                             // TRUE if stack exhausted
+
+	void segment(int16 x, int16 y);
+	bool findRoute(const int16 cx, const int16 cy);
+	Common::Point *newNode();
+};
+
+} // End of namespace Hugo
+
+#endif //HUGO_ROUTE_H