floor.h

/* 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/>.
 *
 */
#ifndef SLUDGE_FLOOR_H
#define SLUDGE_FLOOR_H

namespace Common {
struct Point;
class SeekableReadStream;
class WriteStream;
}

namespace Sludge {

class SludgeEngine;
struct OnScreenPerson;

struct FloorPolygon {
    int numVertices;
    int *vertexID;
};

struct Floor {
    int originalNum;
    Common::Point *vertex;
    int numPolygons;
    FloorPolygon *polygon;
    int **matrix;
};

class FloorManager {
public:
    FloorManager(SludgeEngine *vm);
    ~FloorManager();

    bool init();
    void kill();

    void setFloorNull();
    bool setFloor(int fileNum);
    void drawFloor();
    int inFloor(int x, int y);
    bool isFloorNoPolygon() { return !_currentFloor || _currentFloor->numPolygons == 0; }

    // For Person collision detection
    bool handleClosestPoint(int &setX, int &setY, int &setPoly);
    bool doBorderStuff(OnScreenPerson *moveMe);

    // Save & load
    void save(Common::WriteStream *stream);
    bool load(Common::SeekableReadStream *stream);

private:
    Floor *_currentFloor;
    SludgeEngine *_vm;

    bool getMatchingCorners(FloorPolygon &, FloorPolygon &, int &, int &);
    bool closestPointOnLine(int &closestX, int &closestY, int x1, int y1, int x2, int y2, int xP, int yP);
    bool pointInFloorPolygon(FloorPolygon &floorPoly, int x, int y);
    bool polysShareSide(FloorPolygon &a, FloorPolygon &b);
    void dumpFloor(int fileNum);
};

} // End of namespace Sludge

#endif