示例#1
0
/*
 * Get the number of buttons on a joystick
 */
int SDL_JoystickNumButtons(SDL_Joystick *joystick)
{
	if ( ! ValidJoystick(&joystick) ) {
		return(-1);
	}
	return(joystick->nbuttons);
}
示例#2
0
/*
 * Get the number of trackballs on a joystick
 */
int SDL_JoystickNumBalls(SDL_Joystick *joystick)
{
	if ( ! ValidJoystick(&joystick) ) {
		return(-1);
	}
	return(joystick->nballs);
}
示例#3
0
/*
 * Get the number of hats on a joystick
 */
int SDL_JoystickNumHats(SDL_Joystick *joystick)
{
	if ( ! ValidJoystick(&joystick) ) {
		return(-1);
	}
	return(joystick->nhats);
}
示例#4
0
/*
 * Get the number of multi-dimensional axis controls on a joystick
 */
int SDL_JoystickNumAxes(SDL_Joystick *joystick)
{
	if ( ! ValidJoystick(&joystick) ) {
		return(-1);
	}
	return(joystick->naxes);
}
示例#5
0
/*
 * Get the device index of an opened joystick.
 */
int SDL_JoystickIndex(SDL_Joystick *joystick)
{
	if ( ! ValidJoystick(&joystick) ) {
		return(-1);
	}
	return(joystick->index);
}
示例#6
0
/*
 * Get the current state of a button on a joystick
 */
Uint8 SDL_JoystickGetButton(SDL_Joystick *joystick, int button)
{
	Uint8 state;

	if ( ! ValidJoystick(&joystick) ) {
		return(0);
	}
	if ( button < joystick->nbuttons ) {
		state = joystick->buttons[button];
	} else {
		SDL_SetError("Joystick only has %d buttons",joystick->nbuttons);
		state = 0;
	}
	return(state);
}
示例#7
0
/*
 * Get the current state of a hat on a joystick
 */
Uint8 SDL_JoystickGetHat(SDL_Joystick *joystick, int hat)
{
	Uint8 state;

	if ( ! ValidJoystick(&joystick) ) {
		return(0);
	}
	if ( hat < joystick->nhats ) {
		state = joystick->hats[hat];
	} else {
		SDL_SetError("Joystick only has %d hats", joystick->nhats);
		state = 0;
	}
	return(state);
}
示例#8
0
/*
 * Get the current state of an axis control on a joystick
 */
Sint16 SDL_JoystickGetAxis(SDL_Joystick *joystick, int axis)
{
	Sint16 state;

	if ( ! ValidJoystick(&joystick) ) {
		return(0);
	}
	if ( axis < joystick->naxes ) {
		state = joystick->axes[axis];
	} else {
		SDL_SetError("Joystick only has %d axes", joystick->naxes);
		state = 0;
	}
	return(state);
}
示例#9
0
/*
 * Close a joystick previously opened with SDL_JoystickOpen()
 */
void SDL_JoystickClose(SDL_Joystick *joystick)
{
	int i;

	if ( ! ValidJoystick(&joystick) ) {
		return;
	}

	/* First decrement ref count */
	if ( --joystick->ref_count > 0 ) {
		return;
	}

	/* Lock the event queue - prevent joystick polling */
	SDL_Lock_EventThread();

	if ( joystick == default_joystick ) {
		default_joystick = NULL;
	}
	SDL_SYS_JoystickClose(joystick);

	/* Remove joystick from list */
	for ( i=0; SDL_joysticks[i]; ++i ) {
		if ( joystick == SDL_joysticks[i] ) {
			memcpy(&SDL_joysticks[i], &SDL_joysticks[i+1],
			       (SDL_numjoysticks-i)*sizeof(joystick));
			break;
		}
	}

	/* Let the event thread keep running */
	SDL_Unlock_EventThread();

	/* Free the data associated with this joystick */
	if ( joystick->axes ) {
		free(joystick->axes);
	}
	if ( joystick->hats ) {
		free(joystick->hats);
	}
	if ( joystick->balls ) {
		free(joystick->balls);
	}
	if ( joystick->buttons ) {
		free(joystick->buttons);
	}
	free(joystick);
}
示例#10
0
void SDL_JoystickClose(SDL_Joystick *joystick)
{
	int i;

	if ( ! ValidJoystick(&joystick) ) {
		return;
	}

	
	if ( --joystick->ref_count > 0 ) {
		return;
	}

	
	SDL_Lock_EventThread();

	SDL_SYS_JoystickClose(joystick);

	
	for ( i=0; SDL_joysticks[i]; ++i ) {
		if ( joystick == SDL_joysticks[i] ) {
			SDL_memmove(&SDL_joysticks[i], &SDL_joysticks[i+1],
			       (SDL_allocatedjoysticks-i)*sizeof(joystick));
			break;
		}
	}

	
	SDL_Unlock_EventThread();

	
	if ( joystick->axes ) {
		SDL_free(joystick->axes);
	}
	if ( joystick->hats ) {
		SDL_free(joystick->hats);
	}
	if ( joystick->balls ) {
		SDL_free(joystick->balls);
	}
	if ( joystick->buttons ) {
		SDL_free(joystick->buttons);
	}
	SDL_free(joystick);
}
示例#11
0
/*
 * Get the ball axis change since the last poll
 */
int SDL_JoystickGetBall(SDL_Joystick *joystick, int ball, int *dx, int *dy)
{
	int retval;

	if ( ! ValidJoystick(&joystick) ) {
		return(-1);
	}

	retval = 0;
	if ( ball < joystick->nballs ) {
		if ( dx ) {
			*dx = joystick->balls[ball].dx;
		}
		if ( dy ) {
			*dy = joystick->balls[ball].dy;
		}
		joystick->balls[ball].dx = 0;
		joystick->balls[ball].dy = 0;
	} else {
		SDL_SetError("Joystick only has %d balls", joystick->nballs);
		retval = -1;
	}
	return(retval);
}