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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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
/*
* This code is based on original Hugo Trilogy source code
*
* Copyright (c) 1989-1995 David P. Gray
*
*/
#ifndef HUGO_OBJECT_H
#define HUGO_OBJECT_H
#include "common/file.h"
namespace Hugo {
struct Target { // Secondary target for action
uint16 _nounIndex; // Secondary object
uint16 _verbIndex; // Action on secondary object
};
struct Uses { // Define uses of certain objects
int16 _objId; // Primary object
uint16 _dataIndex; // String if no secondary object matches
Target *_targets; // List of secondary targets
};
class ObjectHandler {
public:
ObjectHandler(HugoEngine *vm);
virtual ~ObjectHandler();
Overlay _objBound;
Overlay _boundary; // Boundary overlay file
Overlay _overlay; // First overlay file
Overlay _ovlBase; // First overlay base file
Object *_objects;
uint16 _numObj;
byte getBoundaryOverlay(uint16 index) const;
byte getObjectBoundary(uint16 index) const;
byte getBaseBoundary(uint16 index) const;
byte getFirstOverlay(uint16 index) const;
int deltaX(const int x1, const int x2, const int vx, int y) const;
int deltaY(const int x1, const int x2, const int vy, const int y) const;
void boundaryCollision(Object *obj);
void clearBoundary(const int x1, const int x2, const int y);
void clearScreenBoundary(const int x1, const int x2, const int y);
void storeBoundary(const int x1, const int x2, const int y);
virtual void homeIn(const int objIndex1, const int objIndex2, const int8 objDx, const int8 objDy) = 0;
virtual void moveObjects() = 0;
virtual void updateImages() = 0;
virtual void swapImages(int objIndex1, int objIndex2) = 0;
bool isCarrying(uint16 wordIndex);
bool findObjectSpace(Object *obj, int16 *destx, int16 *desty);
int calcMaxScore();
int16 findObject(uint16 x, uint16 y);
void freeObjects();
void loadObjectArr(Common::ReadStream &in);
void loadObjectUses(Common::ReadStream &in);
void loadNumObj(Common::ReadStream &in);
void lookObject(Object *obj);
void readObjectImages();
void readObject(Common::ReadStream &in, Object &curObject);
void readUse(Common::ReadStream &in, Uses &curUse);
void restoreAllSeq();
void restoreObjects(Common::SeekableReadStream *in);
void saveObjects(Common::WriteStream *out);
void saveSeq(Object *obj);
void setCarriedScreen(int screenNum);
void showTakeables();
void useObject(int16 objId);
static int y2comp(const void *a, const void *b);
bool isCarried(int objIndex) const;
void setCarry(int objIndex, bool val);
void setVelocity(int objIndex, int8 vx, int8 vy);
void setPath(int objIndex, Path pathType, int16 vxPath, int16 vyPath);
protected:
HugoEngine *_vm;
static const int kEdge = 10; // Closest object can get to edge of screen
static const int kEdge2 = kEdge * 2; // Push object further back on edge collision
static const int kMaxObjNumb = 128; // Used in Update_images()
uint16 _objCount;
Uses *_uses;
uint16 _usesSize;
void restoreSeq(Object *obj);
inline bool checkBoundary(int16 x, int16 y);
template<typename T>
inline int sign(T a) { if ( a < 0) return -1; else return 1; }
};
class ObjectHandler_v1d : public ObjectHandler {
public:
ObjectHandler_v1d(HugoEngine *vm);
virtual ~ObjectHandler_v1d();
virtual void homeIn(const int objIndex1, const int objIndex2, const int8 objDx, const int8 objDy);
virtual void moveObjects();
virtual void updateImages();
virtual void swapImages(int objIndex1, int objIndex2);
};
class ObjectHandler_v2d : public ObjectHandler_v1d {
public:
ObjectHandler_v2d(HugoEngine *vm);
virtual ~ObjectHandler_v2d();
virtual void moveObjects();
virtual void updateImages();
void homeIn(const int objIndex1, const int objIndex2, const int8 objDx, const int8 objDy);
};
class ObjectHandler_v3d : public ObjectHandler_v2d {
public:
ObjectHandler_v3d(HugoEngine *vm);
~ObjectHandler_v3d();
virtual void moveObjects();
virtual void swapImages(int objIndex1, int objIndex2);
};
class ObjectHandler_v1w : public ObjectHandler_v3d {
public:
ObjectHandler_v1w(HugoEngine *vm);
~ObjectHandler_v1w();
void moveObjects();
void updateImages();
void swapImages(int objIndex1, int objIndex2);
};
} // End of namespace Hugo
#endif //HUGO_OBJECT_H
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