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input_joystick.cpp

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/*
        $Id: input_joystick.cpp,v 1.1 2001/03/06 15:09:22 mbn Exp $

        ------------------------------------------------------------------------
        ClanLib, the platform independent game SDK.

        This library is distributed under the GNU LIBRARY GENERAL PUBLIC LICENSE
        version 2. See COPYING for details.

        For a total list of contributers see CREDITS.

        ------------------------------------------------------------------------
*/

#include "Core/precomp.h"

#include <iostream>
#include <windows.h>
#include "input_joystick.h"

/*****************************
                 CL_Joystick_Win32
*****************************/

CL_Joystick_Win32::CL_Joystick_Win32(int _joystick_id)
{
        joystick_id = _joystick_id;

        MMRESULT err=joyGetDevCaps(joystick_id, &joycaps, sizeof(joycaps));
        if (err != JOYERR_NOERROR)
        {
                std::cout << "ClanLib: Failed to initialize joystick #" << joystick_id+1 << std::endl;
                return;
        }
}

CL_Joystick_Win32::~CL_Joystick_Win32()
{
}

char *CL_Joystick_Win32::get_name() const
{
//      return joycaps.szOEMVxD;
        return (char *) joycaps.szPname;
}

int CL_Joystick_Win32::get_num_buttons() const
{
        return joycaps.wMaxButtons;
}

CL_InputButton *CL_Joystick_Win32::get_button(int button_num)
{
        return &buttons[button_num];
}

int CL_Joystick_Win32::get_num_axes() const
{
        return joycaps.wMaxAxes;
}

CL_InputAxis *CL_Joystick_Win32::get_axis(int axis_num)
{
        return &axes[axis_num];
}

int CL_Joystick_Win32::get_num_hats() const
{
        return 1;
}

CL_InputHat *CL_Joystick_Win32::get_hat(int /*hat_num*/)
{
        return &hat;
}

int CL_Joystick_Win32::get_num_cursors() const
{
        return 0;
}

CL_InputCursor *CL_Joystick_Win32::get_cursor(int /*cursor_num*/)
{
        return NULL;
}

void CL_Joystick_Win32::keep_alive()
{
        JOYINFOEX joyinfo;
        joyinfo.dwSize = sizeof(joyinfo);
        joyinfo.dwFlags = JOY_RETURNALL;

        MMRESULT err = joyGetPosEx(joystick_id, &joyinfo);
        if (err != JOYERR_NOERROR)
        {
                std::cout << "ClanLib: Joystick polling failed" << std::endl;
        }

        for (unsigned int button=0; button<joycaps.wMaxButtons; button++)
        {
                buttons[button].set_state(((joyinfo.dwButtons>>button)&1) ? true : false);
        }

        axes[0].set_pos(calc_pos(joyinfo.dwXpos, joycaps.wXmin, joycaps.wXmax));
        axes[1].set_pos(calc_pos(joyinfo.dwYpos, joycaps.wYmin, joycaps.wYmax));

        if (joycaps.wCaps&JOYCAPS_HASZ) axes[2].set_pos(calc_pos(joyinfo.dwZpos, joycaps.wZmin, joycaps.wZmax));
        if (joycaps.wCaps&JOYCAPS_HASR) axes[3].set_pos(calc_pos(joyinfo.dwRpos, joycaps.wRmin, joycaps.wRmax));
        if (joycaps.wCaps&JOYCAPS_HASU) axes[4].set_pos(calc_pos(joyinfo.dwUpos, joycaps.wUmin, joycaps.wUmax));
        if (joycaps.wCaps&JOYCAPS_HASV) axes[5].set_pos(calc_pos(joyinfo.dwVpos, joycaps.wVmin, joycaps.wVmax));

        if (joyinfo.dwPOV==JOY_POVCENTERED) hat.set_dir(-1);
        else hat.set_dir(float(joyinfo.dwPOV)/100);
}

float CL_Joystick_Win32::calc_pos(int pos, int min, int max)
{
        pos-=min;
        max-=min;

        int logical_pos=pos*13/max-6;

        if (logical_pos>0) logical_pos--;
        if (logical_pos<0) logical_pos++;

        if (logical_pos<-5) logical_pos=-5;
        if (logical_pos>5) logical_pos=5;

        return logical_pos/(float) 5;
}

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