Add bindings for game controller input.

* sdl2.scm (%default-init-flags): Add 'joystick' to default flags.
(sdl-init): Translate to 'joystick' to SDL2 init bit flag.
* sdl2/bindings.scm (SDL_INIT_JOYSTICK, SDL_JOYSTICK_POWER_UNKNOWN,
SDL_JOYSTICK_POWER_EMPTY, SDL_JOYSTICK_POWER_LOW,
SDL_JOYSTICK_POWER_MEDIUM, SDL_JOYSTICK_POWER_FULL,
SDL_JOYSTICK_POWER_WIRED, SDL_JOYSTICK_POWER_MAX,
SDL_CONTROLLER_AXIS_INVALID, SDL_CONTROLLER_AXIS_LEFTX,
SDL_CONTROLLER_AXIS_LEFTY, SDL_CONTROLLER_AXIS_RIGHTX,
SDL_CONTROLLER_AXIS_RIGHTY, SDL_CONTROLLER_AXIS_TRIGGERLEFT,
SDL_CONTROLLER_AXIS_TRIGGERRIGHT, SDL_CONTROLLER_AXIS_MAX,
SDL_CONTROLLER_BUTTON_INVALID, SDL_CONTROLLER_BUTTON_A,
SDL_CONTROLLER_BUTTON_B, SDL_CONTROLLER_BUTTON_X,
SDL_CONTROLLER_BUTTON_Y, SDL_CONTROLLER_BUTTON_BACK,
SDL_CONTROLLER_BUTTON_GUIDE, SDL_CONTROLLER_BUTTON_START,
SDL_CONTROLLER_BUTTON_LEFTSTICK, SDL_CONTROLLER_BUTTON_RIGHTSTICK,
SDL_CONTROLLER_BUTTON_LEFTSHOULDER, SDL_CONTROLLER_BUTTON_RIGHTSHOULDER,
SDL_CONTROLLER_BUTTON_DPAD_UP, SDL_CONTROLLER_BUTTON_DPAD_DOWN,
SDL_CONTROLLER_BUTTON_DPAD_LEFT, SDL_CONTROLLER_BUTTON_DPAD_RIGHT,
SDL_CONTROLLER_BUTTON_MAX): New variables.
(sdl-joystick-open, sdl-joystick-close,
sdl-joystick-current-power-level, sdl-joystick-event-state,
sdl-joystick-from-instance-id, sdl-joystick-get-attached,
sdl-joystick-get-axis, sdl-joystick-get-ball, sdl-joystick-get-button,
sdl-joystick-get-device-guid, sdl-joystick-get-guide,
sdl-joystick-get-guid-from-string, sdl-joystick-get-guid-string,
sdl-joystick-get-hat, sdl-joystick-instance-id, sdl-joystick-name,
sdl-joystick-name-for-index, sdl-joystick-num-axes,
sdl-joystick-num-balls, sdl-joystick-num-buttons, sdl-joystick-num-hats,
sdl-num-joysticks, sdl-joystick-update, sdl-game-controller-add-mapping,
sdl-game-controller-open, sdl-game-controller-close,
sdl-game-controller-event-state, sdl-game-controller-from-instance-id,
sdl-game-controller-get-attached, sdl-game-controller-get-axis,
sdl-game-controller-get-axis-from-string,
sdl-game-controller-get-string-from-axis,
sdl-game-controller-get-string-for-axis, sdl-game-controller-get-button,
sdl-game-controller-get-button-from-string,
sdl-game-controller-get-string-from-button,
sdl-game-controller-get-joystick, sdl-game-controller-mapping,
sdl-game-controller-mapping-for-guid, sdl-game-controller-name,
sdl-game-controller-name-for-index, sdl-game-controller-update,
sdl-is-game-controller): New procedures.
* sdl2/events.scm (make-joystick-ball-event, joystick-ball-event?,
joystick-ball-event-timestamp, joystick-ball-event-which,
joystick-ball-event-ball, joystick-ball-event-x-rel,
joystick-ball-event-y-rel, make-joystick-hat-event, joystick-hat-event?,
joystick-hat-event-timestamp, joystick-hat-event-which,
joystick-hat-event-hat, joystick-hat-event-value,
make-joystick-device-event, joystick-device-event?,
joystick-device-event-timestamp, joystick-device-event-which,
joystick-device-event-action, make-controller-axis-event,
controller-axis-event?, controller-axis-event-timestamp,
controller-axis-event-which, controller-axis-event-axis,
controller-axis-event-value, make-controller-button-event,
controller-button-event?, controller-button-down-event?,
controller-button-up-event?, controller-button-event-timestamp,
controller-button-event-which, controller-button-event-button,
controller-button-event-pressed?, make-controller-device-event,
controller-device-event?, controller-device-event-timestamp,
controller-device-event-which, controller-device-event-action,
parse-joystick-ball-event, parse-joystick-hat-event,
parse-joystick-device-event, parse-controller-axis-event,
parse-controller-button-event, parse-controller-device-event): New
procedures.
(poll-event): Parse joystick/controller events.
* sdl2/input/joystick.scm: New file.
* sdl2/input/game-controller.scm: New file.
* Makefile.am (SOURCES): Add them

1 files changed, 2 insertions, 0 deletions

diff --git a/Makefile.am b/Makefile.am
index 9bddc71..4412978 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -48,6 +48,8 @@ SOURCES =					\
   sdl2/render.scm				\
   sdl2/video.scm				\
   sdl2/events.scm				\
+  sdl2/input/joystick.scm			\
+  sdl2/input/game-controller.scm		\
   sdl2/input/text.scm
 
 if WITH_LIBSDL2_IMAGE