wordfindpuzzle.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 NANCY_ACTION_WORDFINDPUZZLE_H
#define NANCY_ACTION_WORDFINDPUZZLE_H

#include "engines/nancy/commontypes.h"
#include "engines/nancy/movieplayer.h"
#include "engines/nancy/action/puzzlerecord.h"

namespace Nancy {

struct WordFindPuzzleData;

namespace Action {

// Word-find puzzle, new in Nancy13 (AR 170). Despite the name it is not a free
// grid drag-select: the player works one target word at a time (progressing across
// scene visits), building a connected chain of orthogonally-adjacent letter cells;
// once the chain has the word's length and matches the answer path, the word's
// animation plays and the next word becomes active.
class WordFindPuzzle : public PuzzleRecord {
public:
    WordFindPuzzle() : PuzzleRecord(7) {}
    virtual ~WordFindPuzzle() {}

    void init() override;

    void readData(Common::SeekableReadStream &stream) override;
    void execute() override;
    void handleInput(NancyInput &input) override;

    bool isViewportRelative() const override { return true; }

protected:
    Common::String getRecordTypeName() const override { return "WordFindPuzzle"; }

    struct Word {
        Common::Path gridImageName;     // +0x55 - the letter grid for this word
        Common::Path overlayImageName;  // +0x76 - overlay drawn on top
        Common::Path animName;          // +0x97 - the "found" animation (a movie)
        Common::Array<Common::Point> answerCoords;  // +0xb8 - the correct letter path (grid cells)
        int16 eventFlagLabel = -1;      // +0x10a - set when the word is found
        Common::Array<Common::Rect> letterRects;    // +0x10c - clickable letter cells
    };

    // Grid (col,row) of a letter rect, using the same pixel maths as the original.
    Common::Point gridCoord(const Common::Rect &rect) const;
    bool isAdjacent(const Common::Point &a, const Common::Point &b) const;
    int letterAtCursor(const Common::Point &mousePos) const;
    int numSelected() const;
    bool chainMatchesAnswer() const;
    void loadWord();
    void startFoundAnimation();
    void finishCurrentWord();
    void redraw();
    WordFindPuzzleData *getPuzzleData() const;

    // -- File data --
    uint16 _cursorType = 0;         // base 0x00
    uint16 _cellGapX = 0;           // base 0x06 - added to a letter's width to get the column pitch
    uint16 _cellGapY = 0;           // base 0x08 - row pitch component
    Common::Path _solutionImageName;        // base 0x2f
    Common::Array<Word> _words;

    Common::Array<RandomSoundBlock> _sounds;    // 4 blocks

    // -- Runtime state --
    // The active word persists across scene visits (and saves) via WordFindPuzzleData.
    int _currentWord = 0;
    Common::Array<bool> _selected;  // per letter of the current word
    bool _allFound = false;

    // The "found word" animation that plays before advancing to the next word.
    MoviePlayer _movie;
    bool _playingMovie = false;

    Graphics::ManagedSurface _gridImage;
    Graphics::ManagedSurface _overlayImage;
};

} // End of namespace Action
} // End of namespace Nancy

#endif // NANCY_ACTION_WORDFINDPUZZLE_H