inputengine.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/>.
 *
 */

/*
 * This code is based on Broken Sword 2.5 engine
 *
 * Copyright (c) Malte Thiesen, Daniel Queteschiner and Michael Elsdoerfer
 *
 * Licensed under GNU GPL v2
 *
 */

/*
 * BS_InputEngine
 * -------------
 * This is the input interface engine that contains all the methods that an
 * input source must implement.
 * All input engines must be derived from this class.
 *
 * Autor: Alex Arnst
 */

#ifndef SWORD25_INPUTENGINE_H
#define SWORD25_INPUTENGINE_H

#include "common/keyboard.h"

#include "sword25/kernel/common.h"
#include "sword25/kernel/service.h"
#include "sword25/kernel/persistable.h"

namespace Sword25 {


class InputEngine : public Service, public Persistable {
public:
    InputEngine(Kernel *pKernel);
    ~InputEngine() override;

    // NOTE: These codes are registered in inputengine_script.cpp
    // If you add or remove entries of this enum, you must also adjust
    // the above file.
    enum KEY_CODES  {
        KEY_BACKSPACE   = Common::KEYCODE_BACKSPACE,
        KEY_TAB         = Common::KEYCODE_TAB,
        KEY_CLEAR       = Common::KEYCODE_CLEAR,
        KEY_RETURN      = Common::KEYCODE_RETURN,
        KEY_PAUSE       = Common::KEYCODE_PAUSE,
        KEY_CAPSLOCK    = Common::KEYCODE_CAPSLOCK,
        KEY_ESCAPE      = Common::KEYCODE_ESCAPE,
        KEY_SPACE       = Common::KEYCODE_SPACE,
        KEY_PAGEUP      = Common::KEYCODE_PAGEUP,
        KEY_PAGEDOWN    = Common::KEYCODE_PAGEDOWN,
        KEY_END         = Common::KEYCODE_END,
        KEY_HOME        = Common::KEYCODE_HOME,
        KEY_LEFT        = Common::KEYCODE_LEFT,
        KEY_UP          = Common::KEYCODE_UP,
        KEY_RIGHT       = Common::KEYCODE_RIGHT,
        KEY_DOWN        = Common::KEYCODE_DOWN,
        KEY_PRINTSCREEN = Common::KEYCODE_PRINT,
        KEY_INSERT      = Common::KEYCODE_INSERT,
        KEY_DELETE      = Common::KEYCODE_DELETE,
        KEY_0           = Common::KEYCODE_0,
        KEY_1           = Common::KEYCODE_1,
        KEY_2           = Common::KEYCODE_2,
        KEY_3           = Common::KEYCODE_3,
        KEY_4           = Common::KEYCODE_4,
        KEY_5           = Common::KEYCODE_5,
        KEY_6           = Common::KEYCODE_6,
        KEY_7           = Common::KEYCODE_7,
        KEY_8           = Common::KEYCODE_8,
        KEY_9           = Common::KEYCODE_9,
        KEY_A           = Common::KEYCODE_a,
        KEY_B           = Common::KEYCODE_b,
        KEY_C           = Common::KEYCODE_c,
        KEY_D           = Common::KEYCODE_d,
        KEY_E           = Common::KEYCODE_e,
        KEY_F           = Common::KEYCODE_f,
        KEY_G           = Common::KEYCODE_g,
        KEY_H           = Common::KEYCODE_h,
        KEY_I           = Common::KEYCODE_i,
        KEY_J           = Common::KEYCODE_j,
        KEY_K           = Common::KEYCODE_k,
        KEY_L           = Common::KEYCODE_l,
        KEY_M           = Common::KEYCODE_m,
        KEY_N           = Common::KEYCODE_n,
        KEY_O           = Common::KEYCODE_o,
        KEY_P           = Common::KEYCODE_p,
        KEY_Q           = Common::KEYCODE_q,
        KEY_R           = Common::KEYCODE_r,
        KEY_S           = Common::KEYCODE_s,
        KEY_T           = Common::KEYCODE_t,
        KEY_U           = Common::KEYCODE_u,
        KEY_V           = Common::KEYCODE_v,
        KEY_W           = Common::KEYCODE_w,
        KEY_X           = Common::KEYCODE_x,
        KEY_Y           = Common::KEYCODE_y,
        KEY_Z           = Common::KEYCODE_z,
        KEY_NUMPAD0     = Common::KEYCODE_KP0,
        KEY_NUMPAD1     = Common::KEYCODE_KP1,
        KEY_NUMPAD2     = Common::KEYCODE_KP2,
        KEY_NUMPAD3     = Common::KEYCODE_KP3,
        KEY_NUMPAD4     = Common::KEYCODE_KP4,
        KEY_NUMPAD5     = Common::KEYCODE_KP5,
        KEY_NUMPAD6     = Common::KEYCODE_KP6,
        KEY_NUMPAD7     = Common::KEYCODE_KP7,
        KEY_NUMPAD8     = Common::KEYCODE_KP8,
        KEY_NUMPAD9     = Common::KEYCODE_KP9,
        KEY_MULTIPLY    = Common::KEYCODE_KP_MULTIPLY,
        KEY_ADD         = Common::KEYCODE_KP_PLUS,
        KEY_SEPARATOR   = Common::KEYCODE_EQUALS,   // FIXME: This mapping is just a wild guess!!
        KEY_SUBTRACT    = Common::KEYCODE_KP_MINUS,
        KEY_DECIMAL     = Common::KEYCODE_KP_PERIOD,
        KEY_DIVIDE      = Common::KEYCODE_KP_DIVIDE,
        KEY_F1          = Common::KEYCODE_F1,
        KEY_F2          = Common::KEYCODE_F2,
        KEY_F3          = Common::KEYCODE_F3,
        KEY_F4          = Common::KEYCODE_F4,
        KEY_F5          = Common::KEYCODE_F5,
        KEY_F6          = Common::KEYCODE_F6,
        KEY_F7          = Common::KEYCODE_F7,
        KEY_F8          = Common::KEYCODE_F8,
        KEY_F9          = Common::KEYCODE_F9,
        KEY_F10         = Common::KEYCODE_F10,
        KEY_F11         = Common::KEYCODE_F11,
        KEY_F12         = Common::KEYCODE_F12,
        KEY_NUMLOCK     = Common::KEYCODE_NUMLOCK,
        KEY_SCROLL      = Common::KEYCODE_SCROLLOCK,
        KEY_LSHIFT      = Common::KEYCODE_LSHIFT,
        KEY_RSHIFT      = Common::KEYCODE_RSHIFT,
        KEY_LCONTROL    = Common::KEYCODE_LCTRL,
        KEY_RCONTROL    = Common::KEYCODE_RCTRL
    };

    // NOTE: These codes are registered in inputengine_script.cpp
    // If you add or remove entries of this enum, you must also adjust
    // the above file.
    enum KEY_COMMANDS {
        KEY_COMMAND_ENTER = 1,
        KEY_COMMAND_LEFT = 2,
        KEY_COMMAND_RIGHT = 3,
        KEY_COMMAND_HOME = 4,
        KEY_COMMAND_END = 5,
        KEY_COMMAND_BACKSPACE = 6,
        KEY_COMMAND_TAB = 7,
        KEY_COMMAND_INSERT = 8,
        KEY_COMMAND_DELETE = 9
    };


    bool init();

    void update();

    bool isLeftMouseDown();

    bool isRightMouseDown();

    bool wasLeftMouseDown();

    bool wasRightMouseDown();

    bool isLeftDoubleClick();

    int getMouseX();

    int getMouseY();

    bool isKeyDown(uint keyCode);

    bool wasKeyDown(uint keyCode);

    typedef void (*CharacterCallback)(int command);

    void setCharacterCallback(CharacterCallback callback);

    typedef void (*CommandCallback)(int command);

    void setCommandCallback(CommandCallback callback);

    void reportCharacter(byte character);
    void reportCommand(KEY_COMMANDS command);

    bool persist(OutputPersistenceBlock &writer) override;
    bool unpersist(InputPersistenceBlock &reader) override;

private:
    bool registerScriptBindings();
    void unregisterScriptBindings();

private:
    void testForLeftDoubleClick();
    void alterKeyboardState(int keycode, byte newState);

    byte _keyboardState[2][512];
    bool _leftMouseState[2];
    bool _rightMouseState[2];
    uint _currentState;
    int _mouseX;
    int _mouseY;
    bool _leftMouseDown;
    bool _rightMouseDown;
    bool _leftDoubleClick;
    uint _doubleClickTime;
    int _doubleClickRectWidth;
    int _doubleClickRectHeight;
    uint _lastLeftClickTime;
    int _lastLeftClickMouseX;
    int _lastLeftClickMouseY;
    CommandCallback _commandCallback;
    CharacterCallback _characterCallback;
};

} // End of namespace Sword25

#endif