lol/src/platform/sdl/sdlinput.cpp

//
// Lol Engine
//
// Copyright: (c) 2010-2011 Sam Hocevar <sam@hocevar.net>
//   This program is free software; you can redistribute it and/or
//   modify it under the terms of the Do What The Fuck You Want To
//   Public License, Version 2, as published by Sam Hocevar. See
//   http://sam.zoy.org/projects/COPYING.WTFPL for more details.
//

#if defined HAVE_CONFIG_H
#   include "config.h"
#endif

#if defined USE_SDL
#   include <SDL.h>
#endif

#include "core.h"
#include "sdlinput.h"

namespace lol
{

/*
 * SDL Input implementation class
 */

class SdlInputData
{
    friend class SdlInput;

private:
    static ivec2 GetMousePos();
};

/*
 * Public SdlInput class
 */

SdlInput::SdlInput()
  : data(new SdlInputData())
{
#if defined USE_SDL
    SDL_Init(SDL_INIT_TIMER);

    m_gamegroup = GAMEGROUP_BEFORE;
#endif
}

void SdlInput::TickGame(float deltams)
{
#if defined USE_SDL
    Entity::TickGame(deltams);

    /* Handle mouse input */
    ivec2 mouse = SdlInputData::GetMousePos();;
    Input::SetMousePos(mouse);

    /* Handle keyboard and WM events */
    SDL_Event event;
    while (SDL_PollEvent(&event))
    {
        switch (event.type)
        {
        case SDL_QUIT:
            Ticker::Shutdown();
            break;
#if 0
        case SDL_KEYDOWN:
            Input::KeyPressed(event.key.keysym.sym, deltams);
            break;
#endif
        case SDL_MOUSEBUTTONDOWN:
        case SDL_MOUSEBUTTONUP:
        {
            ivec2 newmouse = SdlInputData::GetMousePos();
            if (newmouse != mouse)
                Input::SetMousePos(mouse = newmouse);
            if (event.type == SDL_MOUSEBUTTONDOWN)
                Input::SetMouseButton(event.button.button - 1);
            else
                Input::UnsetMouseButton(event.button.button - 1);
            break;
        }
        }
    }

    /* Send the whole keyboard state to the input system */
#if 0
    Uint8 *keystate = SDL_GetKeyState(NULL);
    for (int i = 0; i < 256; i++)
        if (keystate[i])
            Input::KeyPressed(i, deltams);
#endif
#endif
}

SdlInput::~SdlInput()
{
    delete data;
}

ivec2 SdlInputData::GetMousePos()
{
    ivec2 ret(-1, -1);

#if defined USE_SDL
    if (SDL_GetAppState() & SDL_APPMOUSEFOCUS)
    {
        SDL_GetMouseState(&ret.x, &ret.y);
        ret.y = Video::GetSize().y - 1 - ret.y;
    }
#endif
    return ret;
}

} /* namespace lol */