check
Check the state of the D-pad. The index is a value [0, 7] that corresponds to the combinations on the D-pad. 0 represents just 'UP' being pressed, 1 is 'UP-RIGHT', 2 is just 'RIGHT', 3 is 'RIGHT-DOWN', and so on.
This method can be used to see if a specific button on the D-pad is pressed.
Return
If the specified combination is pressed.
Parameters
index
The value to correspond to a D-pad combination.