DInput

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2 total messages Started by Michele Santucci Tue, 28 Jun 2005 08:47

#63

Author: Michele Santucci
Date: Tue, 28 Jun 2005 08:47

78 lines
3193 bytes

Hello NG,

I have some problem using DInput... I wrote this code following the example 
from
Directx 9 SDK (December 2004/April 2005).

The problem is how to check the button status i.e. in this piece of code:

        for( int i = 0; i < LAST_BTN; i++ )
        {
                if( js.rgbButtons[GEARUP_BTN] & 0x80 )
                        Gear++;
                else if( js.rgbButtons[GEARDOWN_BTN] & 0x80 )
                        Gear--;
                else if( js.rgbButtons[CHANGECAMERA_BTN] & 0x80 )
                        SWITCH_CAMERA( Camera );
                else if( js.rgbButtons[ARM_BTN] & 0x80 )
                        SWITCH_ARM( ArmStatus );
        }

after the first time I push one of the checked buttons the if statement is 
executed correctly
but after that each other check of the same button returns true even if the 
button have been
released. Why? How can I fix this?

// Full code

HRESULT TfrmJoyState::UpdateInputState()
{
        HRESULT     hr;
        DIJOYSTATE2 js;

        if( NULL == g_pJoystick )
                return S_OK;

        hr = g_pJoystick->Poll();
        if( FAILED(hr) )
        {
                hr = g_pJoystick->Acquire();
                while( hr == DIERR_INPUTLOST )
                        hr = g_pJoystick->Acquire();

                return S_OK;
        }

        if( FAILED( hr = g_pJoystick->GetDeviceState( sizeof(DIJOYSTATE), 
&js ) ) )
                return hr;

        FSteering    = js.lX;
        FTrust         = js.lY;

        for( int i = 0; i < LAST_BTN; i++ )
        {
                if( js.rgbButtons[GEARUP_BTN] & 0x80 )
                        Gear++;
                else if( js.rgbButtons[GEARDOWN_BTN] & 0x80 )
                        Gear--;
                else if( js.rgbButtons[CHANGECAMERA_BTN] & 0x80 )
                        SWITCH_CAMERA( Camera );
                else if( js.rgbButtons[ARM_BTN] & 0x80 )
                        SWITCH_ARM( ArmStatus );
        }

        return S_OK;
}

-- 
Michele Santucci
===================
Celin Avio S.r.l.
Software Dev. Manager
--------------------------------------
tel. +390187564080
Via Fontevivo 21/M
19126 La Spezia
===================

Re: DInput

#94

Author: DILIP K
Date: Fri, 04 Nov 2005 19:18

12 lines
1724 bytes


hello michelle,
            b4 beginning let me say i am not used to writing directx files..
       still from the code let me give a suggestion.
        once that pressing take place try to break/stop the code.
      'believe one press is much much very much slower compared to cpu proceesing speed.a single press from user ,however fast, is enough to complete the increment/decrement beyond the max. limit.
        so each press should be detected single by single..and for that u have to break inbetween that is for each increment/decrement/jump statements , hav 2 use some sort of toggle variables to stop further changes unless another press is given withth peripheral device.

       now u might have got some way....if i am wrong with my approach i appologize.

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