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Bug 4962

Summary: Hats get confused if they're not all used
Product: SDL Reporter: Sjoerd Simons <sjoerd.simons>
Component: joystickAssignee: Sam Lantinga <slouken>
Status: RESOLVED FIXED QA Contact: Sam Lantinga <slouken>
Severity: normal    
Priority: P2    
Version: HG 2.1   
Hardware: x86_64   
OS: Linux   
Attachments: Proposed fix

Description Sjoerd Simons 2020-01-28 13:03:46 UTC 
Created attachment 4178 [details]
Proposed fix

If only e.g. EV_HAT0X  and EV_HAT2X are used the hat handling code got confused and events for both hats seem to come from hat 0.

A reason for "joysticks" not to have all HATs is because implement the standard linux gamepad event codes (https://www.kernel.org/doc/Documentation/input/gamepad.rst) which defines EV_HAT0 to be for an analog d-pad, EV_HAT1 to the top two shoulder buttons (if analog triggers rather digital) and EV_HAT2 for the bottom two shoulder buttons).
Comment 1 Sam Lantinga 2020-02-04 15:24:12 UTC 
Looks good, thanks!
https://hg.libsdl.org/SDL/rev/26fa8708d147