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Example code for SDL_GameControllerAddMapping()

joy.c (text/x-csrc), 4.50 KB, created by Bob Ombo on 2019-02-15 18:35:39 UTC

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Description:

Filename:

MIME Type:

Creator: Bob Ombo

Created: 2019-02-15 18:35:39 UTC

Size: 4.50 KB

patch

obsolete

>#include "SDL.h"
>
>int main(int argc, char** argv) {
>   int quit=0;
>   SDL_Event event;
>   
>   if(SDL_Init(SDL_INIT_TIMER|SDL_INIT_VIDEO|SDL_INIT_AUDIO|SDL_INIT_JOYSTICK|SDL_INIT_HAPTIC|SDL_INIT_GAMECONTROLLER) == -1) {
>      SDL_Log("[ERROR] SDL_Init: %s", SDL_GetError());
>      SDL_Quit();
>      return(1);
>   }
>   
>   SDL_Window *pWindow=NULL;
>   pWindow=SDL_CreateWindow("joy", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 640, 480, SDL_WINDOW_RESIZABLE);
>   if(pWindow==NULL) {
>      SDL_Log("[ERROR] SDL_CreateWindow: %s", SDL_GetError());
>      SDL_Quit();
>      return(1);
>   }
>   
>   SDL_Renderer *pRenderer=NULL;
>   pRenderer=SDL_CreateRenderer(pWindow, -1, SDL_RENDERER_SOFTWARE);
>   if(pRenderer==NULL) {
>      SDL_Log("[ERROR] SDL_CreateRenderer: %s", SDL_GetError());
>      SDL_Quit();
>      return(1);
>   }
>
>   SDL_GameController *controller=NULL;
>   SDL_JoystickGUID guid;
>   char pszGUID[1024];
>   const char *mappingString=NULL;
>   int amr=0;
>   
>   SDL_Joystick *joy = SDL_JoystickOpen(0);
>   guid=SDL_JoystickGetGUID(joy);
>   SDL_JoystickGetGUIDString(guid, pszGUID, sizeof(pszGUID));
>   SDL_Log("\e[0;32mJoystickGUID[%s]\e[0;0m", pszGUID);
>   SDL_JoystickClose(joy);
>   
>   if(SDL_IsGameController(0)) {
>      controller=SDL_GameControllerOpen(0);
>      SDL_Log("SDL_IsGameController \e[1;34m[%s]\e[0;0m", SDL_GameControllerNameForIndex(0));
>
>      mappingString = SDL_GameControllerMapping(controller);
>      SDL_Log("CURRENT MAPPING for Controller 0 [%s]", mappingString);
>      
>      mappingString="030000005e0400008e02000000010000,XBOX360 Compatible,a:b0,b:b1,x:b2,y:b3,leftshoulder:b9,rightshoulder:b10,lefttrigger:a5,righttrigger:a4,back:b4,guide:b5,start:b6,leftstick:b7,rightstick:b8,dpup:b11,dpdown:b12,dpleft:b13,dpright:b14,leftx:a0,lefty:a1,rightx:a2,righty:a3,platform:Linux";
>	
>      // first add my map
>      // (it is NULL, according to SDL_GameControllerMapping(controller))
>      amr=SDL_GameControllerAddMapping(mappingString);
>      if(amr==1) SDL_Log("New mapping is added");
>      if(amr==0) SDL_Log("An existing mapping is updated");
>      if(amr==-1) SDL_Log("Error[%s]",SDL_GetError());
>
>      // "New mapping is added" everything works as expected!
>      
>      // just do it a second time
>      amr=SDL_GameControllerAddMapping(mappingString);
>      if(amr==1) SDL_Log("New mapping is added");
>      if(amr==0) SDL_Log("An existing mapping is updated");
>      if(amr==-1) SDL_Log("Error[%s]",SDL_GetError());
>      
>      // "An existing mapping is updated" now some axis and buttons are wrong
>      
>      mappingString = SDL_GameControllerMapping(controller);
>      SDL_Log("CURRENT MAPPING for Controller 0 [%s]", mappingString); // does show the correct mappingString
>   }
>   
>   while(!quit) {
>      while(SDL_PollEvent(&event)) {
>	 switch (event.type) {
>	  case SDL_CONTROLLERBUTTONDOWN:
>	    SDL_Log("Controller Button[%s](%d) DOWN", SDL_GameControllerGetStringForButton(event.cbutton.button), event.cbutton.button);
>	    break;
>	  case SDL_CONTROLLERBUTTONUP:
>	    SDL_Log("Controller Button[%s](%d) UP", SDL_GameControllerGetStringForButton(event.cbutton.button), event.cbutton.button);
>	    break;
>    
>	  case SDL_CONTROLLERAXISMOTION:
>	    SDL_Log("Controller Axis[%s](%d) MOTION", SDL_GameControllerGetStringForAxis(event.caxis.axis), event.caxis.value);
>	    break;
>	  case SDL_CONTROLLERDEVICEREMOVED:
>	    // event.cdevice.which == instance id
>	    SDL_Log("\e[1;31mController (%d) REMOVED!\e[0;0m", event.cdevice.which);
>	    break;
>	  case SDL_CONTROLLERDEVICEADDED:
>	    // event.cdevice.which == joystick device index
>	    SDL_Log("\e[1;32mController (%d)[%s] ADDED!\e[0;0m", event.cdevice.which, SDL_GameControllerNameForIndex(event.cdevice.which));
>	    break;
>	  case SDL_JOYDEVICEREMOVED:
>	    // event.jdevice.which == instance id
>	    SDL_Log("\e[1;31mJoystick (%d) REMOVED!\e[0;0m", event.jdevice.which);
>	    break;
>	  case SDL_JOYDEVICEADDED:
>	    // event.jdevice.which == joystick device index
>	    SDL_Log("\e[1;32mJoystick (%d)[%s] ADDED!\e[0;0m", event.jdevice.which, SDL_JoystickNameForIndex(event.jdevice.which));
>	    break;
>	  
>	  case SDL_KEYDOWN:
>	    switch (event.key.keysym.sym) {
>	     case SDLK_q:
>	     case SDLK_ESCAPE:
>	       quit=1;
>	       continue;
>	    }
>	    break;
>	  case SDL_QUIT:
>	    quit=1;
>	    continue;
>	 }
>      }
>
>      SDL_SetRenderDrawColor(pRenderer, 0, 0, 0, 255);
>      SDL_RenderClear(pRenderer);
>      
>      SDL_RenderPresent(pRenderer);
>      SDL_Delay(10);
>   }
>   
>   SDL_DestroyRenderer(pRenderer);
>   SDL_DestroyWindow(pWindow);
>   
>   SDL_Quit();
>   return(0);        
>}

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Attachments on bug 4505: 3625

We are currently migrating Bugzilla to GitHub issues.Any changes made to the bug tracker now will be lost, so please do not post new bugs or make changes to them.When we're done, all bug URLs will redirect to their equivalent location on the new bug tracker.

We are currently migrating Bugzilla to GitHub issues.
Any changes made to the bug tracker now will be lost, so please do not post new bugs or make changes to them.
When we're done, all bug URLs will redirect to their equivalent location on the new bug tracker.