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139 lines
3.6 KiB
C++
139 lines
3.6 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef MADS_RAILS_H
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#define MADS_RAILS_H
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#include "common/scummsys.h"
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#include "common/array.h"
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#include "common/rect.h"
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#include "common/serializer.h"
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#include "common/stack.h"
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#include "mads/msurface.h"
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namespace MADS {
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class WalkNode {
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public:
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Common::Point _walkPos;
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uint16 _distances[MAX_ROUTE_NODES];
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bool _active;
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/**
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* Constructor
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*/
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WalkNode();
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/**
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* Loads the scene node
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*/
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void load(Common::SeekableReadStream *f);
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};
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typedef Common::Array<WalkNode> WalkNodeList;
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/**
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* This class handles storing the intermediate walk node points for a
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* given scene, and calculating walking routes between any two positions.
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*/
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class Rails {
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private:
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WalkNodeList _nodes;
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DepthSurface *_depthSurface;
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int _depthStyle;
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int _routeLength;
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int _next;
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int _tempRoute[MAX_ROUTE_NODES];
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Common::Stack<int> _routeIndexes;
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private:
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/**
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* Change the position of a walking node. Doing so causes a recalculation of the
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* distance between it and every other node, and vice versa
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*/
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void setNodePosition(int nodeIndex, const Common::Point &pt);
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int getRouteFlags(const Common::Point &src, const Common::Point &dest);
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public:
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/**
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* Constructor
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*/
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Rails();
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/**
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* Loads the scene data for the list of intermediate walk nodes and the
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* depth surface to use.
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* @param nodes Intermediate walk-points
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* @param depthSurface Depth surface to use
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*/
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void load(const WalkNodeList &nodes, DepthSurface *depthSurface, int depthStyle);
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/**
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* Set up a route between two points in a scene
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*/
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void setupRoute(bool bitFlag, const Common::Point &srcPos, const Common::Point &destPos);
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void setupRouteNode(int *routeIndexP, int nodeIndex, int flags, int routeLength);
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/**
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* Resets any currently running route
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*/
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void resetRoute();
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/**
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* Scans along an edge connecting two points within the depths/walk surface, and returns the information of the first
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* pixel high nibble encountered with a non-zero value
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*/
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int scanPath(const Common::Point &srcPos, const Common::Point &destPos);
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/*
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* Return the number of walk nodes in the calculated route
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*/
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int size() const { return _routeIndexes.size(); }
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/**
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* Returns true if the current calculated walk route is empty
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*/
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bool empty() const { return _routeIndexes.empty(); }
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/**
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* Returns the data for a given walk node
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*/
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const WalkNode &operator[](int idx) { return _nodes[_routeIndexes[idx]]; }
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const WalkNode &popNode();
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void resetNext() { _next = 0; }
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int getNext() { return _next; }
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/**
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* Synchronize the data for the route
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*/
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void synchronize(Common::Serializer &s);
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void disableNode(int idx);
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void disableLine(int from, int to);
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};
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} // End of namespace MADS
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#endif /* MADS_RAILS_H */
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