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Implement glfwGetJoystickHats

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This moves the buttons-as-hats logic to shared code and adds the
GLFW_JOYSTICK_HAT_BUTTONS input mode as a way to disable this legacy
behavior.

Fixes #889.
This commit is contained in:
Camilla Löwy
2017-03-01 23:27:20 +01:00
parent 368dec7ac7
commit 798d7c6d68
13 changed files with 282 additions and 82 deletions
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src/cocoa_joystick.m
+19 -13
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@@ -204,7 +204,8 @@ static void matchCallback(void* context,
js = _glfwAllocJoystick(name,
CFArrayGetCount(axes),
CFArrayGetCount(buttons) + CFArrayGetCount(hats) * 4);
CFArrayGetCount(buttons),
CFArrayGetCount(hats));
js->ns.device = device;
js->ns.axes = axes;
@@ -358,33 +359,38 @@ int _glfwPlatformPollJoystick(int jid, int mode)
}
else if (mode == _GLFW_POLL_BUTTONS)
{
CFIndex i, bi = 0;
CFIndex i;
for (i = 0; i < CFArrayGetCount(js->ns.buttons); i++)
{
_GLFWjoyelementNS* button = (_GLFWjoyelementNS*)
CFArrayGetValueAtIndex(js->ns.buttons, i);
const char value = getElementValue(js, button) ? 1 : 0;
_glfwInputJoystickButton(jid, bi++, value);
_glfwInputJoystickButton(jid, i, value);
}
for (i = 0; i < CFArrayGetCount(js->ns.hats); i++)
{
const int states[9] =
{
GLFW_HAT_UP,
GLFW_HAT_RIGHT_UP,
GLFW_HAT_RIGHT,
GLFW_HAT_RIGHT_DOWN,
GLFW_HAT_DOWN,
GLFW_HAT_LEFT_DOWN,
GLFW_HAT_LEFT,
GLFW_HAT_LEFT_UP,
GLFW_HAT_CENTERED
};
_GLFWjoyelementNS* hat = (_GLFWjoyelementNS*)
CFArrayGetValueAtIndex(js->ns.hats, i);
// Bit fields of button presses for each direction, including nil
const int directions[9] = { 1, 3, 2, 6, 4, 12, 8, 9, 0 };
long j, state = getElementValue(js, hat);
long state = getElementValue(js, hat);
if (state < 0 || state > 8)
state = 8;
for (j = 0; j < 4; j++)
{
const char value = directions[state] & (1 << j) ? 1 : 0;
_glfwInputJoystickButton(jid, bi++, value);
}
_glfwInputJoystickHat(jid, i, states[state]);
}
}