transitions.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 SCI_GRAPHICS_TRANSITIONS_H
#define SCI_GRAPHICS_TRANSITIONS_H

#include "sci/graphics/helpers.h"

namespace Sci {

struct GfxTransitionTranslateEntry {
    int16 orgId;
    int16 newId;
    bool blackoutFlag;
};

enum {
    SCI_TRANSITIONS_VERTICALROLL_FROMCENTER     = 0,
    SCI_TRANSITIONS_HORIZONTALROLL_FROMCENTER   = 1,
    SCI_TRANSITIONS_STRAIGHT_FROM_RIGHT         = 2,
    SCI_TRANSITIONS_STRAIGHT_FROM_LEFT          = 3,
    SCI_TRANSITIONS_STRAIGHT_FROM_BOTTOM        = 4,
    SCI_TRANSITIONS_STRAIGHT_FROM_TOP           = 5,
    SCI_TRANSITIONS_DIAGONALROLL_TOCENTER       = 6,
    SCI_TRANSITIONS_DIAGONALROLL_FROMCENTER     = 7,
    SCI_TRANSITIONS_BLOCKS                      = 8,
    SCI_TRANSITIONS_PIXELATION                  = 9,
    SCI_TRANSITIONS_FADEPALETTE                 = 10,
    SCI_TRANSITIONS_SCROLL_RIGHT                = 11,
    SCI_TRANSITIONS_SCROLL_LEFT                 = 12,
    SCI_TRANSITIONS_SCROLL_UP                   = 13,
    SCI_TRANSITIONS_SCROLL_DOWN                 = 14,
    SCI_TRANSITIONS_NONE_LONGBOW                = 15,
    SCI_TRANSITIONS_NONE                        = 100,
    // here are transitions that are used by the old tableset, but are not included anymore in the new tableset
    SCI_TRANSITIONS_VERTICALROLL_TOCENTER       = 300,
    SCI_TRANSITIONS_HORIZONTALROLL_TOCENTER     = 301
};

class Screen;
class GfxTransitions {
public:
    GfxTransitions(GfxScreen *screen, GfxPalette *palette);
    ~GfxTransitions();

    void setup(int16 number, bool blackoutFlag);
    void doit(Common::Rect picRect);

private:
    void init();
    const GfxTransitionTranslateEntry *translateNumber(int16 number, const GfxTransitionTranslateEntry *tablePtr);
    void doTransition(int16 number, bool blackout);
    void setNewPalette(bool blackoutFlag);
    void setNewScreen(bool blackoutFlag);
    void copyRectToScreen(const Common::Rect rect, bool blackoutFlag);
    void fadeOut();
    void fadeIn();
    void pixelation(bool blackoutFlag);
    void blocks(bool blackoutFlag);
    void straight(int16 number, bool blackoutFlag);
    void scrollCopyOldToScreen(Common::Rect screenRect, int16 x, int16 y);
    void scroll(int16 number);
    void verticalRollFromCenter(bool blackoutFlag);
    void verticalRollToCenter(bool blackoutFlag);
    void horizontalRollFromCenter(bool blackoutFlag);
    void horizontalRollToCenter(bool blackoutFlag);
    void diagonalRollFromCenter(bool blackoutFlag);
    void diagonalRollToCenter(bool blackoutFlag);
    bool doCreateFrame(uint32 shouldBeAtMsec);
    void updateScreen();
    void updateScreenAndWait(uint32 shouldBeAtMsec);

    GfxScreen *_screen;
    GfxPalette *_palette;

    const GfxTransitionTranslateEntry *_translationTable;
    int16 _number;
    bool _blackoutFlag;
    Common::Rect _picRect;
    byte *_oldScreen; // buffer for saving current active screen data to, has dimensions of _screen->_displayScreen

    uint32 _transitionStartTime; // when the current transition started in milliseconds
};

} // End of namespace Sci

#endif // SCI_GRAPHICS_TRANSITIONS_H