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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 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 VCRUISE_CIRCUITPUZZLE_H
#define VCRUISE_CIRCUITPUZZLE_H
#include "common/array.h"
#include "common/random.h"
#include "common/rect.h"
namespace Common {
class RandomSource;
} // End of namespace Common
namespace VCruise {
struct CircuitPuzzleAIEvaluator;
class CircuitPuzzleVisitedSet;
class CircuitPuzzle {
public:
explicit CircuitPuzzle(int layout);
static const uint kBoardWidth = 6;
static const uint kBoardHeight = 5;
enum CellDirection {
kCellDirectionRight,
kCellDirectionDown,
};
enum Conclusion {
kConclusionNone,
kConclusionPlayerWon,
kConclusionPlayerLost,
};
struct CellRectSpec {
Common::Rect _rightLinkRect;
Common::Rect _downLinkRect;
Common::Rect _rightBarrierRect;
Common::Rect _downBarrierRect;
};
// Returns true if the AI can act, if it can then the actions are produced
bool executeAIAction(Common::RandomSource &randomSource, Common::Point &outCoord, CellDirection &outBlockDirection);
void addLink(const Common::Point &coord, CellDirection direction);
Conclusion checkConclusion() const;
const CellRectSpec *getCellRectSpec(const Common::Point &coord) const;
bool isCellDownLinkOpen(const Common::Point &coord) const;
bool isCellRightLinkOpen(const Common::Point &coord) const;
private:
enum LinkState {
kLinkStateOpen,
kLinkStateConnected,
kLinkStateBlocked,
};
enum Direction {
kDirectionUp,
KDirectionDown,
kDirectionLeft,
kDirectionRight,
kDirectionCount,
};
struct CellState {
CellState();
LinkState _downLink;
LinkState _rightLink;
};
struct Action {
Action();
Common::Point _point;
CellDirection _direction;
};
static Common::Point getConnectedPoint(const Common::Point &coord, Direction direction);
LinkState *getConnectionState(const Common::Point &coord, Direction direction);
const LinkState *getConnectionState(const Common::Point &coord, Direction direction) const;
static bool isPositionValid(const Common::Point &coord);
void computeStepsToReach(CircuitPuzzleAIEvaluator &evaluator) const;
void floodFillLinks(Common::Point *pointsList, uint &listSize, CircuitPuzzleVisitedSet &visitedSet) const;
static void validateCoord(const Common::Point &coord);
CellState _cells[kBoardWidth][kBoardHeight];
CellRectSpec _cellRectSpecs[kBoardWidth][kBoardHeight];
Common::Point _startPoint;
Common::Point _goalPoint;
bool _havePreviousAction;
Action _previousAction;
};
} // End of namespace VCruise
#endif
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