input.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 ILLUSIONS_INPUT_H
#define ILLUSIONS_INPUT_H

#include "common/array.h"
#include "common/events.h"
#include "common/keyboard.h"
#include "common/rect.h"

namespace Illusions {

enum {
    MOUSE_NONE         = 0,
    MOUSE_LEFT_BUTTON  = 1,
    MOUSE_RIGHT_BUTTON = 2
};

enum {
    kEventLeftClick    = 0,
    kEventRightClick   = 1,
    kEventInventory    = 2,
    kEventAbort        = 3,
    kEventSkip         = 4,
    kEventF1           = 5,
    kEventUp           = 6,
    kEventDown         = 7,
    kEventMax
};

struct KeyMapping {
    Common::KeyCode _key;
    int _mouseButton;
    bool _down;
};

class KeyMap : public Common::Array<KeyMapping> {
public:
    void addKey(Common::KeyCode key);
    void addMouseButton(int mouseButton);
protected:
    void add(Common::KeyCode key, int mouseButton);
};

class InputEvent {
public:
    InputEvent();
    InputEvent& setBitMask(uint bitMask);
    InputEvent& addKey(Common::KeyCode key);
    InputEvent& addMouseButton(int mouseButton);
    uint handle(Common::KeyCode key, int mouseButton, bool down);
    uint getBitMask() const { return _bitMask; }
protected:
    uint _bitMask;
    KeyMap _keyMap;
};

class Input {
public:
    Input();
    void processEvent(Common::Event event);
    bool pollEvent(uint evt);
    bool hasNewEvents();
    void discardEvent(uint evt);
    void discardAllEvents();
    bool pollButton(uint bitMask);
    void activateButton(uint bitMask);
    void deactivateButton(uint bitMask);
    Common::Point getCursorPosition();
    void setCursorPosition(Common::Point mousePos);
    Common::Point getCursorDelta();
    InputEvent& setInputEvent(uint evt, uint bitMask);
    bool isCursorMovedByKeyboard() const { return _cursorMovedByKeyboard; }
    bool isCheatModeActive();
protected:
    uint _cheatCodeIndex;
    uint _buttonStates, _newButtons, _buttonsDown;
    uint _enabledButtons;
    uint _newKeys;
    Common::Point _cursorPos, _prevCursorPos;
    InputEvent _inputEvents[kEventMax];
    bool _cursorMovedByKeyboard;
    void handleKey(Common::KeyCode key, int mouseButton, bool down);
    void handleMouseButton(int mouseButton, bool down);
    void discardButtons(uint bitMask);
    bool lookButtonStates(uint bitMask);
    bool lookNewButtons(uint bitMask);
    void setButtonState(uint bitMask);
    void moveCursorByKeyboard(int deltaX, int deltaY);
};

} // End of namespace Illusions

#endif // ILLUSIONS_INPUT_H