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 WPAD_Init() has change his behavior? 
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Joined: Sat Dec 28, 2013 2:42 pm
Posts: 35
I test some code in Dolphin (both 4 and 5).

I do not know when, but WPAD_Init() has change his behavior.
With last version of libogc, buttons are not detected without calling of WPAD_SetDataFormat().
You can try with "template.c" from examples/wii: it does not work.
To test it I add a line in the main loop. Press A have no effects.

Code:
   
        while(1) {

      // Call WPAD_ScanPads each loop, this reads the latest controller states
      WPAD_ScanPads();

      // WPAD_ButtonsDown tells us which buttons were pressed in this loop
      // this is a "one shot" state which will not fire again until the button has been released
      u32 pressed = WPAD_ButtonsDown(0);
      
      if ( pressed & WPAD_BUTTON_A ) printf("Hello again, World!\n"); // added

      // We return to the launcher application via exit
      if ( pressed & WPAD_BUTTON_HOME ) exit(0);

      // Wait for the next frame
      VIDEO_WaitVSync();
   }


Adding WPAD_SetDataFormat(0, WPAD_FMT_BTNS_ACC_IR); after WPAD_Init() do it works.
Code:
   // This function initialises the attached controllers
   WPAD_Init();
        WPAD_SetDataFormat(0, WPAD_FMT_BTNS_ACC_IR);


Tutorials around the WEB and examples does not use WPAD_SetDataFormat() if only check of buttons is required, but if the new behavior is correct I think that some examples (and the template) must be fixed.


Mon Dec 31, 2018 4:34 pm
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Joined: Tue Aug 09, 2005 3:21 am
Posts: 1314
Location: UK
I don't usually test with Dolphin much so I can't say if the behaviour has changed. The code works fine as is on hardware though.

It may be a matter of timing somewhere that we can mitigate but it's not really a bug if it doesn't happen on hardware.

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