bool JoystickInfo::PollButtons(u32 &pkey)
{
// MAKE sure to look for changes in the state!!
for (int i = 0; i < GetNumButtons(); ++i)
{
int but = SDL_JoystickGetButton(GetJoy(), i);
if (but != GetButtonState(i))
{
// Pressure sensitive button are detected as both button (digital) and axes (analog). So better
// drop the button to emulate the pressure sensiblity of the ds2 :)
// Trick: detect the release of the button. It avoid all races condition between axes and buttons :)
// If the button support pressure it will be detected as an axis when it is pressed.
if (but) {
SetButtonState(i, but);
return false;
}
pkey = button_to_key(i);
return true;
}
}
return false;
}
bool JoystickInfo::PollButtons(u32 &pkey)
{
// MAKE sure to look for changes in the state!!
for (int i = 0; i < GetNumButtons(); ++i)
{
int but = SDL_JoystickGetButton(GetJoy(), i);
if (but != GetButtonState(i))
{
if (!but) // released, we don't really want this
{
continue;
}
// Pressure sensitive button are detected as both button (digital) and axes (analog). So better
// drop the button to emulate the pressure sensiblity of the ds2 :) -- Gregory
u32 pkey_dummy;
if (PollAxes(pkey_dummy))
return false;
pkey = button_to_key(i);
return true;
}
}
return false;
}
bool JoystickInfo::PollAxes(u32 &pkey)
{
for (int i = 0; i < GetNumAxes(); ++i)
{
// Sixaxis, dualshock3 hack
u32 found_hack = devname.find(string("PLAYSTATION(R)3"));
if (found_hack != string::npos) {
// The analog mode of the hat button is quite erratic. Values can be in half- axis
// or full axis... So better keep them as button for the moment -- gregory
if (i >= 8 && i <= 11 && (conf->pad_options[pad].sixaxis_usb))
continue;
// Disable accelerometer
if ((i >= 4 && i <= 6))
continue;
}
s32 value = SDL_JoystickGetAxis(GetJoy(), i);
s32 old_value = GetAxisState(i);
if (abs(value - old_value) < 0x1000)
continue;
if (value != old_value)
{
PAD_LOG("Change in joystick %d: %d.\n", i, value);
// There are several kinds of axes
// Half+: 0 (release) -> 32768
// Half-: 0 (release) -> -32768
// Full (like dualshock 3): -32768 (release) ->32768
const s32 full_axis_ceil = -0x6FFF;
const s32 half_axis_ceil = 0x1FFF;
// Normally, old_value contains the release state so it can be used to detect the types of axis.
bool is_full_axis = (old_value < full_axis_ceil) ? true : false;
if ((!is_full_axis && abs(value) <= half_axis_ceil)
|| (is_full_axis && value <= full_axis_ceil)) // we don't want this
{
continue;
}
if ((!is_full_axis && abs(value) > half_axis_ceil)
|| (is_full_axis && value > full_axis_ceil))
{
bool sign = (value < 0);
pkey = axis_to_key(is_full_axis, sign, i);
return true;
}
}
}
return false;
}
bool JoystickInfo::PollHats(u32 &pkey)
{
for (int i = 0; i < GetNumHats(); ++i)
{
int value = SDL_JoystickGetHat(GetJoy(), i);
if ((value != GetHatState(i)) && (value != SDL_HAT_CENTERED))
{
switch (value)
{
case SDL_HAT_UP:
case SDL_HAT_RIGHT:
case SDL_HAT_DOWN:
case SDL_HAT_LEFT:
pkey = hat_to_key(value, i);
PAD_LOG("Hat Pressed!");
return true;
default:
break;
}
}
}
return false;
}
int JoystickInfo::GetAxisFromKey(int pad, int index)
{
return SDL_JoystickGetAxis(GetJoy(), key_to_axis(pad, index));
}
int JoystickInfo::GetButton(int key_to_button)
{
return SDL_JoystickGetButton(GetJoy(),key_to_button);
}
int JoystickInfo::GetHat(int key_to_axis)
{
return SDL_JoystickGetHat(GetJoy(),key_to_axis);
}
u32 systemReadJoypad(int which)
{
if(which == -1) which = 0; // default joypad
return GetJoy(which);
}
// main interface to FCE Ultra
void FCEUD_Update(uint8 *XBuf, int32 *Buffer, int32 Count)
{
PlaySound(Buffer, Count); // play sound
RenderFrame(XBuf); // output video frame
GetJoy(); // check controller input
}