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Bug 3020 - SDL_HapticRumbleInit() FAILS
Summary: SDL_HapticRumbleInit() FAILS
Status: ASSIGNED
Alias: None
Product: SDL
Classification: Unclassified
Component: haptic (show other bugs)
Version: HG 2.1
Hardware: x86_64 Windows 7
: P2 normal
Assignee: Ryan C. Gordon
QA Contact: Sam Lantinga
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2015-06-16 03:57 UTC by Joe Thompson
Modified: 2016-10-08 00:54 UTC (History)
1 user (show)

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Description Joe Thompson 2015-06-16 03:57:11 UTC 
With Direct Input device (MOMO Steering Wheel w/FF)
SDL_HapticRumbleInit() FAILS with error:
Haptic error Unable to create effect
Comment 1 Joe Thompson 2015-06-16 03:58:48 UTC 
This effects 2.0.4 rc1
Comment 2 Ryan C. Gordon 2015-06-16 05:03:51 UTC 
Assigning Edgar's bugs to me.

--ryan.
Comment 3 Joe Thompson 2016-05-28 15:41:54 UTC 
The MOMO Steering wheel only seems to support SDL_HAPTIC_CARTESIAN coordinates for downloaded effects. The SDL built-in Rumble effect does not set the efx->periodic.direction.type. So SDL_HAPTIC_POLAR is used.

In SDL_haptic.c (at line 767) adding 

efx->periodic.direction.type = SDL_HAPTIC_CARTESIAN;
efx->periodic.direction.dir[0] = 0;

allows SDL_HapticRumbleInit() to succeed. 

I have no other dinput devices, so I do not know if this would break existing Rumble devices.

Joe