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#include "StdAfx.h"
char useGetHat[] = "hatPosition = JOYSTICK(joystickNumber,'GetHat',hatNumber)";
char synopsisGetHat[] = "Given a joystick number and a hat number, return the immediate "
"position of the specified hat on the specified joystick. The returned value hatPostion is an "
"integer (1-9) representing the current position of the hat. You can use named constants such "
"as HatCentered and HatUp to associate the return values with hat postions. See help for "
"'PsychJoystick' for list of these constants. \n"
"Use 'GetNumJoysticks' and 'GetNumAxes' to determine maximum legal values for joystickNumber and "
"hatNumber arguments to 'GetAxis'. The first joystick and the first hat are numbered 1. "
"It is an error to call 'GetHat' if the specified joystick has no hats.";
void JOYSTICKGetHat(int nlhs, mxArray *plhs[], int nrhs, CONSTmxArray *prhs[])
{
ProjectTable *joystickTable=GetProjectTable();
int numSticks, numHats, fetchedHat;
CONSTmxArray *numArg;
double stickNum;
SDL_Joystick *pStick;
Uint8 hatVal;
if(joystickTable->giveHelp){GiveHelp(useGetHat,synopsisGetHat);return;}
numArg = joystickTable->joystickNumberArgument;
if(numArg == NULL || nlhs > 1 || nrhs > 1 || nrhs < 1 || !mxIsDouble(numArg) || (mxGetM(numArg) * mxGetN(numArg) != 1 ||
!mxIsDouble(prhs[0]) || (mxGetM(prhs[0]) * mxGetN(prhs[0])) != 1)){
GiveUsageExit(useGetHat);
}
numSticks = SDL_NumJoysticks();
stickNum = mxGetPr(numArg)[0];
if(stickNum > numSticks)
PrintfExit("The joystick number %d passed to JOYSTICK 'GetHat' exceeds the number of joysticks, %d",stickNum,numSticks);
if(stickNum < 1)
PrintfExit("The joystick number passed to JOYSTICK 'GetHat' must be greater than 0");
pStick = GetJoystickObjFromNum((int)stickNum-1);
if(pStick == NULL)
PrintfExit("JOYSTICK 'GetHat' can not open joystick number %d",stickNum);
numHats = SDL_JoystickNumHats(pStick);
fetchedHat = (int)mxGetPr(prhs[0])[0];
if(fetchedHat > numHats || fetchedHat < 0)
PrintfExit("The axis number %d passed to JOYSTICK 'GetHat' is oustide the allowable range",fetchedHat);
SDL_JoystickUpdate();
hatVal = SDL_JoystickGetHat(pStick, fetchedHat-1);
plhs[0] = mxCreateDoubleMatrix(1,1,mxREAL);
switch(hatVal){
case SDL_HAT_CENTERED: mxGetPr(plhs[0])[0] = 0; break;
case SDL_HAT_UP: mxGetPr(plhs[0])[0] = 1; break;
case SDL_HAT_RIGHT: mxGetPr(plhs[0])[0] = 2; break;
case SDL_HAT_DOWN: mxGetPr(plhs[0])[0] = 3; break;
case SDL_HAT_LEFT: mxGetPr(plhs[0])[0] = 4; break;
case SDL_HAT_RIGHTUP: mxGetPr(plhs[0])[0] = 5; break;
case SDL_HAT_RIGHTDOWN: mxGetPr(plhs[0])[0] = 6; break;
case SDL_HAT_LEFTUP: mxGetPr(plhs[0])[0] = 7; break;
case SDL_HAT_LEFTDOWN: mxGetPr(plhs[0])[0] = 8; break;
}
}
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