/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.

 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

/*
 * This code is based on the original source code of Lord Avalot d'Argent version 1.3.
 * Copyright (c) 1994-1995 Mike, Mark and Thomas Thurman.
 */

/* Avalot joystick setup routines. To be incorporated
                         into Setup2 whenever I get a chance. */
/*#include "Joystick.h"*/
/*#include "Crt.h"*/

namespace Avalanche {

struct joysetup {
	word xmid, ymid, xmin, ymin, xmax, ymax;
	byte centre; /* Size of centre in tenths */
};

joysetup js;
file<joysetup> jf;

boolean detect() {
	word x, y, xo, yo;
	byte count;
	boolean detect_result;
	count = 0;
	if (joystickpresent) {
		detect_result = true;
		return detect_result;
	}
	readjoya(xo, yo);
	do {
		if (count < 7)  count += 1; /* Take advantage of "flutter" */
		if (count == 6) {
			output << "The Bios says you don't have a joystick. However, it's often wrong" << NL;
			output << "about such matters. So, do you? If you do, move joystick A to" << NL;
			output << "continue. If you don't, press any key to cancel." << NL;
		}
		readjoya(x, y);
	} while (!((keypressed()) | (x != xo) || (y != yo)));
	detect_result = ~ keypressed();
	return detect_result;
}

void display() {
	{
		gotoxy(20, 10);
		output << "X min: " << js.xmin << "  ";
		gotoxy(20, 11);
		output << "X max: " << js.xmax << "  ";
		gotoxy(20, 12);
		output << "Y min: " << js.ymin << "  ";
		gotoxy(20, 13);
		output << "Y max: " << js.ymax << "  ";
	}
}

void getmaxmin() {
	word x, y;
	output << "Rotate the joystick around in a circle, as far from the centre as it" << NL;
	output << "can get. Then click a button." << NL;
	{
		js.xmax = 0;
		js.xmin = maxint;
		js.ymax = 0;
		js.ymin = maxint;
	}
	do {
		readjoya(x, y);
		{
			if (x < js.xmin)  js.xmin = x;
			if (y < js.ymin)  js.ymin = y;
			if (x > js.xmax)  js.xmax = x;
			if (y > js.ymax)  js.ymax = y;
			display();
		}
	} while (!(buttona1 | buttona2));
	do {
	} while (!(~(buttona1 | buttona2)));
	output << NL;
	output << "Thank you. Now please centre your joystick and hit a button." << NL;
	do {
	} while (!(buttona1 | buttona2));
	readjoya(js.xmid, js.ymid);
}

int main(int argc, const char *argv[]) {
	pio_initialize(argc, argv);
	textattr = 2;
	clrscr;
	output << "Avalot joystick setup routine- by TT. Thanks go to David B. Howorth." << NL;
	output << NL;
	if (detect())  output << "You've got a joystick!" << NL;
	else return 0;
	getmaxmin();
	do {
		output << "Centring factor\? (3-9)";
		input >> js.centre >> NL;
	} while (!(set::of(range(1, 9), eos).has(js.centre)));
	assign(jf, "v:joytmp.dat");
	rewrite(jf);
	jf << js;
	close(jf);     /* write it all out to disk. */
	return EXIT_SUCCESS;
}

} // End of namespace Avalanche.