/*      $NetBSD: human.cc,v 1.4 2021/12/05 09:22:45 rillig Exp $        */

/*-
* Copyright (c) 2003 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/

/*
* Human interface for dots, using rogue-like keys.
*/

#include "defs.h"
RCSID("$NetBSD: human.cc,v 1.4 2021/12/05 09:22:45 rillig Exp $")

#include "human.h"
#include "board.h"
#include "box.h"
#include "ttyscrn.h"

#define CONTROL(a) ((a) & 037)

extern GAMESCREEN *sc;

HUMAN::HUMAN(const char c) :
   PLAYER(c),
   _curx(0),
   _cury(1)
{
}

void HUMAN::play(const BOARD& b, size_t& y, size_t& x, int& dir)
{
   int mv;
   b.setpos(_cury, _curx);

   for (;;) {
       switch (mv = b.getmove()) {
       case 'h': case 'H':
           _curx -= 2;
           break;

       case 'l': case 'L':
           _curx += 2;
           break;

       case 'k': case 'K':
           _cury -= 2;
           break;

       case 'j': case 'J':
           _cury += 2;
           break;

       case 'u': case 'U':
           _curx += 1;
           _cury -= 1;
           break;

       case 'y': case 'Y':
           _curx -= 1;
           _cury -= 1;
           break;

       case 'b': case 'B':
           _curx -= 1;
           _cury += 1;
           break;

       case 'n': case 'N':
           _curx += 1;
           _cury += 1;
           break;

       case 'q': case 'Q':
           // Cleanup
           delete sc;
           exit(0);

       case CONTROL('L'): case CONTROL('R'):
           b.clean();
           b.paint();
           break;

       case ' ':
           {
               x = _curx / 2;
               y = _cury / 2;

               if (_cury & 1) {
                   if (_curx == 0)
                       dir = BOX::left;
                   else {
                       x--;
                       dir = BOX::right;
                   }
               }

               if (_curx & 1) {
                   if (_cury == 0)
                       dir = BOX::top;
                   else {
                       y--;
                       dir = BOX::bottom;
                   }
               }
           }
           return;

       default:
           break;
       }

       // We add 2 before the comparison to avoid underflow
       if ((2 + _curx) - (_curx & 1) < 2)
           _curx = (b.nx() * 2) + (_curx & 1);
       if (_curx >= (b.nx() * 2) + 1)
           _curx = (_curx & 1);

       if ((2 + _cury) - (_cury & 1) < 2)
           _cury = (b.ny() * 2) + (_cury & 1);
       if (_cury >= (b.ny() * 2) + 1)
           _cury = (_cury & 1);

       b.setpos(_cury, _curx);
   }
}