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Merge pull request #2 from fatty/joystick-hats

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Implemented POV hat support for OS X and Win32.
This commit is contained in:
Camilla Berglund 2012-04-03 09:27:32 -07:00
commit c996b861ba
2 changed files with 54 additions and 13 deletions
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39
src/cocoa_joystick.m
View File

@ -311,6 +311,13 @@ static void pollJoystickEvents(void)
(_glfwJoystickElement*) CFArrayGetValueAtIndex(joystick->axes, j);
axes->value = getElementValue(joystick, axes);
}
for (j = 0; j < joystick->numHats; j++)
{
_glfwJoystickElement* hat =
(_glfwJoystickElement*) CFArrayGetValueAtIndex(joystick->hats, j);
hat->value = getElementValue(joystick, hat);
}
}
}
}
@ -502,7 +509,7 @@ int _glfwPlatformGetJoystickParam(int joy, int param)
return (int) CFArrayGetCount(_glfwJoysticks[joy].axes);
case GLFW_BUTTONS:
return (int) CFArrayGetCount(_glfwJoysticks[joy].buttons);
return (int) CFArrayGetCount(_glfwJoysticks[joy].buttons) + ((int) CFArrayGetCount(_glfwJoysticks[joy].hats)) * 4;
default:
break;
@ -565,7 +572,7 @@ int _glfwPlatformGetJoystickPos(int joy, float* pos, int numaxes)
int _glfwPlatformGetJoystickButtons(int joy, unsigned char* buttons,
int numbuttons)
{
int i;
int button;
if (joy < GLFW_JOYSTICK_1 || joy > GLFW_JOYSTICK_LAST)
return 0;
@ -578,17 +585,31 @@ int _glfwPlatformGetJoystickButtons(int joy, unsigned char* buttons,
return 0;
}
numbuttons = numbuttons < joystick.numButtons ? numbuttons : joystick.numButtons;
// Update joystick state
pollJoystickEvents();
for (i = 0; i < numbuttons; i++)
for (button = 0; button < numbuttons && button < joystick.numButtons; button++)
{
_glfwJoystickElement* button = (_glfwJoystickElement*) CFArrayGetValueAtIndex(joystick.buttons, i);
buttons[i] = button->value ? GLFW_PRESS : GLFW_RELEASE;
_glfwJoystickElement* element = (_glfwJoystickElement*) CFArrayGetValueAtIndex(joystick.buttons, button);
buttons[button] = element->value ? GLFW_PRESS : GLFW_RELEASE;
}
return numbuttons;
}
// Virtual buttons - Inject data from hats
// Each hat is exposed as 4 buttons which exposes 8 directions with concurrent button presses
const int directions[9] = { 1, 3, 2, 6, 4, 12, 8, 9, 0 }; // Bit fields of button presses for each direction, including nil
for (int i = 0; i < joystick.numHats; i++)
{
_glfwJoystickElement* hat = (_glfwJoystickElement*) CFArrayGetValueAtIndex(joystick.hats, i);
int value = hat->value;
if (value < 0 || value > 8) value = 8;
for (int j = 0; j < 4 && button < numbuttons; j++)
{
buttons[button++] = directions[value] & (1 << j) ? GLFW_PRESS : GLFW_RELEASE;
}
}
return button;
}

28
src/win32_joystick.c
View File

@ -91,6 +91,8 @@ int _glfwPlatformGetJoystickParam(int joy, int param)
// Get joystick capabilities
_glfw_joyGetDevCaps(joy - GLFW_JOYSTICK_1, &jc, sizeof(JOYCAPS));
const int hats = (jc.wCaps & JOYCAPS_HASPOV) && (jc.wCaps & JOYCAPS_POV4DIR) ? 1 : 0;
switch (param)
{
case GLFW_AXES:
@ -98,8 +100,8 @@ int _glfwPlatformGetJoystickParam(int joy, int param)
return jc.wNumAxes;
case GLFW_BUTTONS:
// Return number of joystick axes
return jc.wNumButtons;
// Return number of joystick buttons
return jc.wNumButtons + hats * 4;
default:
break;
@ -174,7 +176,7 @@ int _glfwPlatformGetJoystickButtons(int joy, unsigned char* buttons,
// Get joystick state
ji.dwSize = sizeof(JOYINFOEX);
ji.dwFlags = JOY_RETURNBUTTONS;
ji.dwFlags = JOY_RETURNBUTTONS | JOY_RETURNPOV;
_glfw_joyGetPosEx(joy - GLFW_JOYSTICK_1, &ji);
// Get states of all requested buttons
@ -184,6 +186,24 @@ int _glfwPlatformGetJoystickButtons(int joy, unsigned char* buttons,
(ji.dwButtons & (1UL << button) ? GLFW_PRESS : GLFW_RELEASE);
}
// Virtual buttons - Inject data from hats
// Each hat is exposed as 4 buttons which exposes 8 directions with concurrent button presses
// (Note: This API only exposes one hat)
const int hats = (jc.wCaps & JOYCAPS_HASPOV) && (jc.wCaps & JOYCAPS_POV4DIR) ? 1 : 0;
const int directions[9] = { 1, 3, 2, 6, 4, 12, 8, 9, 0 }; // Bit fields of button presses for each direction, including nil
if (hats > 0)
{
int j;
int value = ji.dwPOV / 100 / 45;
if (value < 0 || value > 8) value = 8;
for (j = 0; j < 4 && button < numbuttons; j++)
{
buttons[button++] = directions[value] & (1 << j) ? GLFW_PRESS : GLFW_RELEASE;
}
}
return button;
}