I am making a game that uses a gamepad for input so I'd like to get an idea of what button number in Allegro (e.g., 0, 1, 2, etc.) maps to what physical button (e.g., A, B, X, triangle, etc.) on various gamepads. So, I would appreciate it if anyone who uses a gamepad with Allegro wouldn't mind posting what button maps to what physical button on your gamepad.

For example, something like "on my Super NES controller that I somehow managed to plug into my PC button 0 is B, button 1 is Y, button 2 is X ..." and so on.

My PS1 controller with a USB adapter uses the scheme
Button 0 = Triangle
Button 1 = Circle
Button 2 = X
Button 3 = Square
Button 4 = L2
Button 5 = R2
Button 6 = L1
Button 7 = R1
Button 8 = Select
Button 9 = Start
Button 10 = Left Stick Button
Button 11 = Right Stick Button

I find this scheme to be a little strange because I'd usually think of X (or A on an xbox controller) to be the "first" button, but this could just be my impression clashing with how things work internally... hence my curiosity about how the numbers work for other people's devices.

If your controller is not (or doesn't resemble) something used on a popular console, a link to a picture would also be appreciated.

Thank you.

Wow I edit too much

Logitech F510 Rumble(Supports 2 different input modes)
(Using DirectInput)
And is made for use with PCs
Resembles a Xbox360 controller
Except the left joystick and control pad are placed exactly like on a PS controller
Actually, it looks like A PS controller except the buttons have the XBox labels on them

Button 0 = X (Square on PS controller)
Button 1 = A (X on on PS controller)
Button 2 = B (Circle on PS controller)
Button 3 = Y (Triangle on PS controller)
Button 4 = LB (L1)
Button 5 = RB (R1)
Button 6 = LT (L2)
Button 7 = RT (R2)
Button 8 = Back (Select)
Button 9 = Start
Button 10 = Left stick button (L3)
Button 11 = Right stick button (R3)

I've quickly tested this with the Allegro ex_joystick_events example, I think those little squares are in an ascending sequence.
On all the older gamepads that I've used, the Square (Like on PS) was the first button
I've put where the buttons would be located on a PS controller layout between brackets.

I'll put what happens when I use XInput later, still have stuff to do.
But I do know the buttons are mapped differently.

This is informative, particularly the part about other gamepads also corresponding to this pattern. Perhaps I'm right that my gamepad's layout is rather odd, but wrong that A is the "first" button, and what you have here is more of a "standard" arrangement, at least when using DirectInput.

I don't use XInput at all, so no need to post information on that for my sake, if you're busy.

Thank you for the response!

I have to wait until I get home to verify this, but the 360 controller might have A as button 0.

I do know, however, that with DirectInput, what would be l2 and r2 are on a single axis (so holding both down at once is the same as not holding them down)

With Rumble Gamepad F510 working in XInput mode (should be the same as an XBOX360 controller):

Button 0 = A
Button 1 = B
Button 2 = X
Button 3 = Y
Button 4 = LB
Button 5 = RB
Button 6 = Back
Button 7 = Start
Button 8 = Left Stick Button
Button 9 = Right Stick Button

LT and RT are mapped to an axis.

That Xbox layout is closer to what I expected. Thanks.

Oscar, if you were using XInput mode, LT and RT would each be on their own axis, not shared. Just an FYI.

Allegro 5 uses DirectInput for joystick handling on Windows. In ex_joystick_events, I get two separate axes for LT and RT or I'm a monkey's uncle. I didn't try it right now, but I will on a $50+ bet.

According to MSDN, DirectInput puts LT and RT on a shared axis.

(From http://msdn.microsoft.com/en-us/library/ee417014%28v=vs.85%29.aspx )

I don't know if Allegro 5 does something to the input, though.

For me, it's on the same axis. Allegro5 was my first exposure to this behavior actually.

Well then thanks for not taking that bet because I'm probably wrong .

Wii Classic controller connected with MayFlash adapter:

Button 0 = a
Button 1 = b
Button 2 = x
Button 3 = y
Button 4 = l
Button 5 = r
Button 6 = zl
Button 7 = zr
Button 8 = -
Button 9 = +
Button 10 = home
Button 11 = up
Button 12 = left
Button 13 = down
Button 14 = right

Gamecube controller via USB adapter:

0 - A
1 - B
2 - X
3 - Y
4 - L trigger click
5 - R trigger click
6 - Z
7 - Start