mirror of
https://github.com/libretro/scummvm.git
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1b8678d5de
Allows Flux to walk close to Drew if really needed to prevent total path block. Prevents path finding if the character is out of the screen svn-id: r55051
99 lines
2.4 KiB
C++
99 lines
2.4 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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* 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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* 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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* $URL$
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* $Id$
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*
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*/
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#ifndef TOON_PATH_H
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#define TOON_PATH_H
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#include "toon/toon.h"
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namespace Toon {
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// binary heap system for fast A*
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struct HeapDataGrid {
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int16 _x, _y;
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int16 _weight;
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};
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class PathFindingHeap {
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public:
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PathFindingHeap();
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~PathFindingHeap();
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int32 _alloc;
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int32 _count;
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int32 push(int32 x, int32 y, int32 weight);
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int32 pop(int32 *x, int32 *y, int32 *weight);
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int32 init(int32 size);
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int32 clear();
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int32 unload();
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private:
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HeapDataGrid *_data;
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};
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class PathFinding {
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public:
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PathFinding(ToonEngine *vm);
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~PathFinding();
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int32 findPath(int32 x, int32 y, int32 destX, int32 destY);
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int32 findClosestWalkingPoint(int32 xx, int32 yy, int32 *fxx, int32 *fyy, int origX = -1, int origY = -1);
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bool isWalkable(int32 x, int32 y);
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bool isLikelyWalkable(int32 x, int32 y);
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bool lineIsWalkable(int32 x, int32 y, int32 x2, int32 y2);
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void init(Picture *mask);
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void resetBlockingRects();
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void addBlockingRect(int32 x1, int32 y1, int32 x2, int32 y2);
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void addBlockingEllipse(int32 x1, int32 y1, int32 w, int32 h);
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int32 getPathNodeCount() const;
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int32 getPathNodeX(int32 nodeId) const;
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int32 getPathNodeY(int32 nodeId) const;
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protected:
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Picture *_currentMask;
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PathFindingHeap *_heap;
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int32 *_gridTemp;
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int32 _width;
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int32 _height;
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int32 _tempPathX[4096];
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int32 _tempPathY[4096];
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int32 _blockingRects[16][5];
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int32 _numBlockingRects;
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int32 _allocatedGridPathCount;
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int32 _gridPathCount;
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ToonEngine *_vm;
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};
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} // End of namespace Toon
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#endif
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