1 /* ScummVM - Graphic Adventure Engine
2  *
3  * ScummVM is the legal property of its developers, whose names
4  * are too numerous to list here. Please refer to the COPYRIGHT
5  * file distributed with this source distribution.
6  *
7  * This program is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU General Public License
9  * as published by the Free Software Foundation; either version 2
10  * of the License, or (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
20  *
21  */
22 #ifndef SLUDGE_FLOOR_H
23 #define SLUDGE_FLOOR_H
24 
25 #include "common/rect.h"
26 
27 namespace Sludge {
28 
29 class SludgeEngine;
30 struct OnScreenPerson;
31 
32 struct FloorPolygon {
33 	int numVertices;
34 	int *vertexID;
35 };
36 
37 struct Floor {
38 	int originalNum;
39 	Common::Point *vertex;
40 	int numPolygons;
41 	FloorPolygon *polygon;
42 	int **matrix;
43 };
44 
45 class FloorManager {
46 public:
47 	FloorManager(SludgeEngine *vm);
48 	~FloorManager();
49 
50 	bool init();
51 	void kill();
52 
53 	void setFloorNull();
54 	bool setFloor(int fileNum);
55 	void drawFloor();
56 	int inFloor(int x, int y);
isFloorNoPolygon()57 	bool isFloorNoPolygon() { return !_currentFloor || _currentFloor->numPolygons == 0; }
58 
59 	// For Person collision detection
60 	bool handleClosestPoint(int &setX, int &setY, int &setPoly);
61 	bool doBorderStuff(OnScreenPerson *moveMe);
62 
63 	// Save & load
64 	void save(Common::WriteStream *stream);
65 	bool load(Common::SeekableReadStream *stream);
66 
67 private:
68 	Floor *_currentFloor;
69 	SludgeEngine *_vm;
70 
71 	bool getMatchingCorners(FloorPolygon &, FloorPolygon &, int &, int &);
72 	bool closestPointOnLine(int &closestX, int &closestY, int x1, int y1, int x2, int y2, int xP, int yP);
73 	bool pointInFloorPolygon(FloorPolygon &floorPoly, int x, int y);
74 	bool polysShareSide(FloorPolygon &a, FloorPolygon &b);
75 };
76 
77 } // End of namespace Sludge
78 
79 #endif
80