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/*
   client/joystick.cc
   This file is part of the Osirion project and is distributed under
   the terms and conditions of the GNU General Public License version 2
*/

#include "SDL/SDL.h"

#include "auxiliary/functions.h"
#include "client/joystick.h"
#include "core/cvar.h"
#include "sys/sys.h"

namespace client
{

core::Cvar *input_joystick = 0;

int current_joystick_number = 0;
SDL_Joystick *current_joystick = 0;

void Joystick::init()
{
	SDL_InitSubSystem(SDL_INIT_JOYSTICK);

	int nbjoysticks = SDL_NumJoysticks();
	if (nbjoysticks) {
		for (int i=0; i < nbjoysticks; i++) {
			SDL_Joystick *joystick = SDL_JoystickOpen(i);
			if (joystick) {
				con_print << "  joystick " << i+1 << ": " <<
					SDL_JoystickName(i) << " " <<
					SDL_JoystickNumAxes(joystick) << " axes " <<
					SDL_JoystickNumButtons(joystick) << " buttons " << std::endl;

				SDL_JoystickClose(joystick);
			}
		}
	}

	input_joystick = core::Cvar::get("input_joystick", 0.0f, core::Cvar::Archive);
	input_joystick->set_info("[int] set joystick number to use");

	current_joystick_number = 0;
	SDL_JoystickEventState(SDL_IGNORE);
}

void Joystick::shutdown()
{
	if (current_joystick) {
		SDL_JoystickEventState(SDL_IGNORE);
		SDL_JoystickClose(current_joystick);
		current_joystick = 0;
	}

	SDL_QuitSubSystem(SDL_INIT_JOYSTICK);
}

bool Joystick::is_enabled()
{
	return (current_joystick != 0);
}

void Joystick::frame()
{
	if (current_joystick_number != (int) input_joystick->value())
	{
		if (current_joystick) {
			SDL_JoystickEventState(SDL_IGNORE);
			SDL_JoystickClose(current_joystick);
			current_joystick = 0;
		}
		
		current_joystick_number = (int) input_joystick->value();

		if (current_joystick_number) {
			current_joystick = SDL_JoystickOpen(current_joystick_number -1);
		}

		if (current_joystick) {
			con_debug << "  using joystick " << SDL_JoystickName(current_joystick_number -1) << std::endl;
			SDL_JoystickEventState(SDL_ENABLE);
		}
	}
}

}