/*      $OpenBSD: bdisp.c,v 1.13 2016/01/08 21:38:33 mestre Exp $       */
/*
 * Copyright (c) 1994
 *      The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Ralph Campbell.
 *
 * 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.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
 */

#include <curses.h>
#include <err.h>
#include <string.h>

#include "gomoku.h"

#define SCRNH           24              /* assume 24 lines for the moment */
#define SCRNW           80              /* assume 80 chars for the moment */

static  int     lastline;
static  char    pcolor[] = "*O.?";

/*
 * Initialize screen display.
 */
void
cursinit(void)
{
        initscr();
        if ((LINES < SCRNH) || (COLS < SCRNW)) {
                endwin();
                errx(1,"Screen too small (need %dx%d)",SCRNW,SCRNH);
        }
#ifdef KEY_MIN
        keypad(stdscr, TRUE);
#endif /* KEY_MIN */
        nonl();
        noecho();
        cbreak();

#ifdef NCURSES_MOUSE_VERSION
        mousemask(BUTTON1_CLICKED, (mmask_t *)NULL);
#endif /* NCURSES_MOUSE_VERSION*/
}

/*
 * Restore screen display.
 */
void
cursfini(void)
{
        move(BSZ4, 0);
        clrtoeol();
        refresh();
        echo();
        endwin();
}

/*
 * Initialize board display.
 */
void
bdisp_init(void)
{
        int i, j;

        /* top border */
        for (i = 1; i < BSZ1; i++) {
                move(0, 2 * i + 1);
                addch(letters[i]);
        }
        /* left and right edges */
        for (j = BSZ1; --j > 0; ) {
                move(20 - j, 0);
                printw("%2d ", j);
                move(20 - j, 2 * BSZ1 + 1);
                printw("%d ", j);
        }
        /* bottom border */
        for (i = 1; i < BSZ1; i++) {
                move(20, 2 * i + 1);
                addch(letters[i]);
        }
        bdwho(0);
        move(0, 47);
        addstr("#  black  white");
        lastline = 0;
        bdisp();
}

/*
 * Update who is playing whom.
 */
void
bdwho(int update)
{
        int i, j;
        extern char *plyr[];

        move(21, 0);
        printw("                                              ");
        i = strlen(plyr[BLACK]);
        j = strlen(plyr[WHITE]);
        if (i + j <= 20) {
                move(21, 10 - (i + j)/2);
                printw("BLACK/%s (*) vs. WHITE/%s (O)",
                    plyr[BLACK], plyr[WHITE]);
        } else {
                move(21, 0);
                if (i <= 10)
                        j = 20 - i;
                else if (j <= 10)
                        i = 20 - j;
                else
                        i = j = 10;
                printw("BLACK/%.*s (*) vs. WHITE/%.*s (O)",
                    i, plyr[BLACK], j, plyr[WHITE]);
        }
        if (update)
                refresh();
}

/*
 * Update the board display after a move.
 */
void
bdisp(void)
{
        int i, j, c;
        struct spotstr *sp;

        for (j = BSZ1; --j > 0; ) {
                for (i = 1; i < BSZ1; i++) {
                        move(BSZ1 - j, 2 * i + 1);
                        sp = &board[i + j * BSZ1];
                        if (debug > 1 && sp->s_occ == EMPTY) {
                                if (sp->s_flg & IFLAGALL)
                                        c = '+';
                                else if (sp->s_flg & CFLAGALL)
                                        c = '-';
                                else
                                        c = '.';
                        } else
                                c = pcolor[sp->s_occ];
                        addch(c);
                }
        }
        refresh();
}

#ifdef DEBUG
/*
 * Dump board display to a file.
 */
void bdump(FILE *fp)
{
        int i, j, c;
        struct spotstr *sp;

        /* top border */
        fprintf(fp, "   A B C D E F G H J K L M N O P Q R S T\n");

        for (j = BSZ1; --j > 0; ) {
                /* left edge */
                fprintf(fp, "%2d ", j);
                for (i = 1; i < BSZ1; i++) {
                        sp = &board[i + j * BSZ1];
                        if (debug > 1 && sp->s_occ == EMPTY) {
                                if (sp->s_flg & IFLAGALL)
                                        c = '+';
                                else if (sp->s_flg & CFLAGALL)
                                        c = '-';
                                else
                                        c = '.';
                        } else
                                c = pcolor[sp->s_occ];
                        putc(c, fp);
                        putc(' ', fp);
                }
                /* right edge */
                fprintf(fp, "%d\n", j);
        }

        /* bottom border */
        fprintf(fp, "   A B C D E F G H J K L M N O P Q R S T\n");
}
#endif /* DEBUG */

/*
 * Display a transcript entry
 */
void
dislog(char *str)
{

        if (++lastline >= SCRNH - 1) {
                /* move 'em up */
                lastline = 1;
        }
        if (strlen(str) >= SCRNW - (2 * BSZ4))
                str[SCRNW - (2 * BSZ4) - 1] = '\0';
        move(lastline, (2 * BSZ4));
        addstr(str);
        clrtoeol();
        move(lastline + 1, (2 * BSZ4));
        clrtoeol();
}

/*
 * Display a question.
 */
void
ask(char *str)
{
        int len = strlen(str);

        move(BSZ4, 0);
        addstr(str);
        clrtoeol();
        move(BSZ4, len);
        refresh();
}

int
get_line(char *buf, int size)
{
        char *cp, *end;
        int c = EOF;
        extern int interactive;

        cp = buf;
        end = buf + size - 1;   /* save room for the '\0' */
        while (cp < end && (c = getchar()) != EOF && c != '\n' && c != '\r') {
                *cp++ = c;
                if (interactive) {
                        switch (c) {
                        case 0x0c: /* ^L */
                                wrefresh(curscr);
                                cp--;
                                continue;
                        case 0x15: /* ^U */
                        case 0x18: /* ^X */
                                while (cp > buf) {
                                        cp--;
                                        addch('\b');
                                }
                                clrtoeol();
                                break;
                        case '\b':
                        case 0x7f: /* DEL */
                                if (cp == buf + 1) {
                                        cp--;
                                        continue;
                                }
                                cp -= 2;
                                addch('\b');
                                c = ' ';
                                /* FALLTHROUGH */
                        default:
                                addch(c);
                        }
                        refresh();
                }
        }
        *cp = '\0';
        return(c != EOF);
}


/* Decent (n)curses interface for the game, based on Eric S. Raymond's
 * modifications to the battleship (bs) user interface.
 */
int getcoord(void)
{
        static int curx = BSZ / 2;
        static int cury = BSZ / 2;
        int ny, nx, c;

        BGOTO(cury,curx);
        refresh();
        nx = curx; ny = cury;
        for (;;) {
                mvprintw(BSZ3, (BSZ -6)/2, "(%c %d)", 
                                'A'+ ((curx > 7) ? (curx+1) : curx), cury + 1);
                BGOTO(cury, curx);

                switch(c = getch()) {
                case 'k': case '8':
#ifdef KEY_MIN
                case KEY_UP:
#endif /* KEY_MIN */
                        ny = cury + 1;       nx = curx;
                        break;
                case 'j': case '2':
#ifdef KEY_MIN
                case KEY_DOWN:
#endif /* KEY_MIN */
                        ny = BSZ + cury - 1; nx = curx;
                        break;
                case 'h': case '4':
#ifdef KEY_MIN
                case KEY_LEFT:
#endif /* KEY_MIN */
                        ny = cury;          nx = BSZ + curx - 1;
                        break;
                case 'l': case '6':
#ifdef KEY_MIN
                case KEY_RIGHT:
#endif /* KEY_MIN */
                        ny = cury;          nx = curx + 1;
                        break;
                case 'y': case '7':
#ifdef KEY_MIN
                case KEY_A1:
#endif /* KEY_MIN */
                        ny = cury + 1;        nx = BSZ + curx - 1;
                        break;
                case 'b': case '1':
#ifdef KEY_MIN
                case KEY_C1:
#endif /* KEY_MIN */
                        ny = BSZ + cury - 1; nx = BSZ + curx - 1;
                        break;
                case 'u': case '9':
#ifdef KEY_MIN
                case KEY_A3:
#endif /* KEY_MIN */
                        ny = cury + 1;        nx = curx + 1;
                        break;
                case 'n': case '3':
#ifdef KEY_MIN
                case KEY_C3:
#endif /* KEY_MIN */
                        ny = BSZ + cury - 1; nx = curx + 1;
                        break;
                case 'K':
                        ny = cury + 5;       nx = curx;
                        break;
                case 'J':
                        ny = BSZ + cury - 5; nx = curx;
                        break;
                case 'H':
                        ny = cury;          nx = BSZ + curx - 5;
                        break;
                case 'L':
                        ny = cury;          nx = curx + 5;
                        break;
                case 'Y':
                        ny = cury + 5;        nx = BSZ + curx - 5;
                        break;
                case 'B':
                        ny = BSZ + cury - 5; nx = BSZ + curx - 5;
                        break;
                case 'U':
                        ny = cury + 5;        nx = curx + 5;
                        break;
                case 'N':
                        ny = BSZ + cury - 5; nx = curx + 5;
                        break;
                case FF:
                        nx = curx; ny = cury;
                        (void)clearok(stdscr, TRUE);
                        (void)refresh();
                        break;
#ifdef NCURSES_MOUSE_VERSION
                case KEY_MOUSE:
                {
                        MEVENT  myevent;

                        getmouse(&myevent);
                        if (myevent.y >= 1 && myevent.y <= BSZ1
                                && myevent.x >= 3 && myevent.x <= (2 * BSZ + 1))
                        {
                                curx = (myevent.x - 3) / 2;
                                cury = BSZ - myevent.y;
                                return(PT(curx,cury));
                        }
                        else
                                beep();
                }
                break;
#endif /* NCURSES_MOUSE_VERSION */
                case 'Q':
                        return(RESIGN);
                        break;
                case 'S':
                        return(SAVE);
                        break;
                case ' ':
                case '\015':  /* return */
                        (void) mvaddstr(BSZ3, (BSZ -6)/2, "      ");
                        return(PT(curx+1,cury+1));
                        break;
        }

        curx = nx % BSZ;
        cury = ny % BSZ;
    }
}