animation.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 MADS_ANIMATION_H
#define MADS_ANIMATION_H

#include "common/array.h"
#include "common/rect.h"
#include "mads/msurface.h"
#include "mads/scene_data.h"
#include "mads/font.h"

namespace MADS {

enum AnimFlag {
    ANIMFLAG_LOAD_BACKGROUND      = 0x0100, // Load background
    ANIMFLAG_LOAD_BACKGROUND_ONLY = 0x0200, // Load background only

    ANIMFLAG_DITHER               = 0x0001, // Dither to 16 colors
    ANIMFLAG_CUSTOM_FONT          = 0x2000, // Load custom fonts
    ANIMFLAG_ANIMVIEW             = 0x4000  // Cutscene animation
};

enum AnimBgType {
    ANIMBG_ROOM = 1, ANIMBG_FULL_SIZE = 2, ANIMBG_BLACK_SCREEN = 3,
    ANIMBG_INTERFACE = 4
};

class MADSEngine;
class Scene;

class AnimMessage {
public:
    int16 _soundId;
    Common::String _msg;
    Common::Point _pos;
    byte _rgb1[3], _rgb2[3];
    int _flags;
    int _startFrame, _endFrame;
    int _kernelMsgIndex;

    void load(Common::SeekableReadStream *f);
};

class AnimFrameEntry {
public:
    int _frameNumber;
    int _seqIndex;
    SpriteSlotSubset _spriteSlot;

    void load(Common::SeekableReadStream *f, bool uiFlag);
};

class AnimMiscEntry {
public:
    int _soundId;
    int _msgIndex;
    int _numTicks;
    Common::Point _posAdjust;
    Common::Point _scroll;

    void load(Common::SeekableReadStream *f);
};

#define ANIM_SPAWN_COUNT 2

class AnimUIEntry {
public:
    int _probability;
    int _imageCount;
    int _firstImage;
    int _lastImage;
    int _counter;
    int _spawn[ANIM_SPAWN_COUNT];
    int _spawnFrame[ANIM_SPAWN_COUNT];
    int _sound;
    int _soundFrame;

    void load(Common::SeekableReadStream *f);
};

class AAHeader {
public:
    int _spriteSetsCount;
    int _miscEntriesCount;
    int _frameEntriesCount;
    int _messagesCount;
    int _loadFlags;
    int _charSpacing;
    AnimBgType _bgType;
    int _roomNumber;
    bool _manualFlag;
    int _spritesIndex;
    Common::Point _scrollPosition;
    uint32 _scrollTicks;
    Common::String _backgroundFile;
    Common::StringArray _spriteSetNames;
    Common::String _lbmFilename;
    Common::String _spritesFilename;
    Common::String _soundName;
    Common::String _dsrName;
    Common::String _fontResource;

    void load(Common::SeekableReadStream *f);
};

class Animation {
private:
    MADSEngine *_vm;
    Scene *_scene;

    Common::Array<AnimMiscEntry> _miscEntries;
    Common::Array<SpriteAsset *> _spriteSets;
    Font *_font;

    bool _freeFlag;
    bool _skipLoad;
    int _unkIndex;
    Common::Point _unkList[2];
    uint32 _nextFrameTimer;
    uint32 _nextScrollTimer;
    int _messageCtr;
    int _trigger;
    int _flags;
    int _rgbResult;
    int _palIndex1, _palIndex2;
    TriggerMode _triggerMode;
    ActionDetails _actionDetails;

    void loadFrame(int frameNumber);

    bool drawFrame(SpriteAsset &spriteSet, const Common::Point &pt, int frameNumber);

    void loadBackground(MSurface &backSurface, DepthSurface &depthSurface,
        AAHeader &header, int flags, Common::Array<PaletteCycle> *palCycles, SceneInfo *sceneInfo);

    bool hasScroll() const;
protected:
    Animation(MADSEngine *vm, Scene *scene);
public:
    AAHeader _header;
    Common::Array<int> _spriteListIndexes;
    Common::Array<AnimFrameEntry> _frameEntries;
    Common::Array<AnimUIEntry> _uiEntries;
    Common::Array<AnimMessage> _messages;
    bool _resetFlag;
    bool _canChangeView;
    int _currentFrame;
    int _oldFrameEntry;
    int _dynamicHotspotIndex;

    static Animation *init(MADSEngine *vm, Scene *scene);
    /*
     * Destructor
     */
    ~Animation();

    void load(MSurface &backSurface, DepthSurface &depthSurface, const Common::Path &resName,
        int flags, Common::Array<PaletteCycle> *palCycles, SceneInfo *sceneInfo);

    void preLoad(const Common::Path &resName, int level);

    void startAnimation(int endTrigger);

    void update();

    void eraseSprites();

    void setNextFrameTimer(uint32 newTimer);
    uint32 getNextFrameTimer() const { return _nextFrameTimer; }
    void setCurrentFrame(int frameNumber);
    int getCurrentFrame() const { return _currentFrame; }

    bool freeFlag() const { return _freeFlag; }
    int roomNumber() const { return _header._roomNumber; }

    void resetSpriteSetsCount() { _header._spriteSetsCount = 0; } // CHECKME: See if it doesn't leak the memory when the destructor is called

    SpriteAsset *getSpriteSet(int idx) { return _spriteSets[idx]; }

    Common::Point getFramePosAdjust(int idx);
};

} // End of namespace MADS

#endif /* MADS_ANIMATION_H */