Better support for secondary stick in DirectInput driver #1463
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connorjclark
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SiegeLord
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Feb 11, 2024
| // ...it may be that using `Z` really is common for some input devices. | ||
| // | ||
| // Solution came from https://www.gamedev.net/forums/topic/613913-directinput-identifying-second-thumbstick/ | ||
| if (j) |
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Now that we have a backwards compatibility mechanism, we can merge a version of this. Could you add check like this https://github.com/liballeg/allegro5/blob/8575e373ab79c7bc25f8425990fc6780e75e69c8/src/macosx/hidjoy.m#L192C4-L192C76 here, so this behavior can be configured?
Also, could j be called something more informative, like... offset_override maybe?
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As referenced here: #1462 (comment)
This patch fixes detection of the secondary thumbstick. I tested on two devices: a PS4 Dualshock, and a Stadia controller.
The code assumed that Rx, Ry, Rz will always be what maps to the secondary stick. However, that apparently was too hard for controller manufacturers to do. For example, my above mentioned controllers use Z and Rz for the second stick. Short of including a database of controller mappings, this patch introduces a heuristic to guess how to map to a secondary stick.
The idea for the solution came from https://www.gamedev.net/forums/topic/613913-directinput-identifying-second-thumbstick/