Allow using the Gamepad's touch screen as a RETRO_DEVICE_POINTER.
Methodology could use some work, had to add an extra axis to
joypad in order to get the data transferred into the input driver.
Feel free to change this.
Needs to emulate RETRO_DEVICE_LIGHTGUN to really be useful.
Potential for Wiimote IR in future.
Partially addresses libretro/RetroArch#5294
* the remote control presents itself as ID_INPUT_KEY, not
ID_INPUT_KEYBOARD. However, ID_INPUT_KEYBOARD is a subset of
ID_INPUT_KEY.
* the remote control lacks the backspace and enter keys, which are hard
coded in RetroArch. It has "back" and "ok" instead, so map those to
RETROK_BACKSPACE and RETROK_ENTER as well.
Remote controls also have no ESC key, but that one is customizable
and I used the Power key of the remote (which already has a mapping
to RETROK_POWER).
The functionality provided is really the bare minimum, but it is enough
to teach a kid "press the power button here to watch TV"; compared to
pressing L1+R1+START+SELECT and navigating to the RetroArch's "quit"
menu item, that hopefully has more chances of success.
* the remote control presents itself as ID_INPUT_KEY, not
ID_INPUT_KEYBOARD. However, ID_INPUT_KEYBOARD is a subset of
ID_INPUT_KEY.
* the remote control lacks the backspace and enter keys, which are hard
coded in RetroArch. It has "back" and "ok" instead, so map those to
RETROK_BACKSPACE and RETROK_ENTER as well.
Remote controls also have no ESC key, but that one is customizable
and I used the Power key of the remote (which already has a mapping
to RETROK_POWER).
The functionality provided is really the bare minimum, but it is enough
to teach a kid "press the power button here to watch TV"; compared to
pressing L1+R1+START+SELECT and navigating to the RetroArch's "quit"
menu item, that hopefully has more chances of success.
