colobot/src/common/key.h

// * This file is part of the COLOBOT source code
// * Copyright (C) 2012, Polish Portal of Colobot (PPC)
// *
// * 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/.

/**
 * \file common/key.h
 * \brief Key-related macros and enums
 */

#pragma once


#include <SDL_keysym.h>

/* Key definitions are specially defined here so that it is clear in other parts of the code
  that these are used. It is to avoid having SDL-related enum values or #defines lying around
  unchecked. With this approach it will be easier to maintain the code later on. */

// Key symbol defined as concatenation to SDLK_...
// If need arises, it can be changed to custom function or anything else
#define KEY(x) SDLK_ ## x


// Key modifier defined as concatenation to KMOD_...
// If need arises, it can be changed to custom function or anything else
#define KEY_MOD(x) KMOD_ ## x

/**
 * \enum VirtualKmod
 * \brief Virtual key codes generated on kmod presses
 *
 * These are provided here because left and right pair of keys generate different codes.
 */
enum VirtualKmod
{
    VIRTUAL_KMOD_CTRL  = SDLK_LAST + 100, //! < control (left or right)
    VIRTUAL_KMOD_SHIFT = SDLK_LAST + 101, //! < shift (left or right)
    VIRTUAL_KMOD_ALT   = SDLK_LAST + 102, //! < alt (left or right)
    VIRTUAL_KMOD_META  = SDLK_LAST + 103  //! < win key (left or right)
};

// Just syntax sugar
// So it is the same as other macros
#define VIRTUAL_KMOD(x) VIRTUAL_KMOD_ ## x

// Virtual key code generated on joystick button presses
// num is number of joystick button
#define VIRTUAL_JOY(num) (SDLK_LAST + 200 + num)

//! Special value for invalid key bindings
const unsigned int KEY_INVALID = SDLK_LAST + 1000;