/*      $NetBSD: pl_7.c,v 1.42 2011/08/26 06:18:18 dholland Exp $       */

/*
 * Copyright (c) 1983, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * 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 <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)pl_7.c      8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: pl_7.c,v 1.42 2011/08/26 06:18:18 dholland Exp $");
#endif
#endif /* not lint */

#include <curses.h>
#include <err.h>
#include <errno.h>
#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "array.h"
#include "extern.h"
#include "player.h"
#include "display.h"

/*
 * Use values above KEY_MAX for custom keycodes. (blymn@ says this is ok)
 */
#define KEY_ESC(ch) (KEY_MAX+10+ch)


/*
 * Display interface
 */

static void draw_view(void);
static void draw_turn(void);
static void draw_stat(void);
static void draw_slot(void);
static void draw_board(void);

static struct stringarray *sc_lines;
static unsigned sc_scrollup;
static bool sc_hasprompt;
static bool sc_hideprompt;
static const char *sc_prompt;
static const char *sc_buf;

static WINDOW *view_w;
static WINDOW *turn_w;
static WINDOW *stat_w;
static WINDOW *slot_w;
static WINDOW *scroll_w;

static bool obp[3];
static bool dbp[3];

int done_curses;
static bool ingame;
int loaded, fired, changed, repaired;
int dont_adjust;
static int viewrow, viewcol;
char movebuf[sizeof SHIP(0)->file->movebuf];
int player;
struct ship *ms;                /* memorial structure, &cc->ship[player] */
struct File *mf;                /* ms->file */
struct shipspecs *mc;           /* ms->specs */

////////////////////////////////////////////////////////////
// overall initialization

static
void
define_esc_key(int ch)
{
        char seq[3] = { '\x1b', ch, 0 };

        define_key(seq, KEY_ESC(ch));
}

void
initscreen(void)
{
        int ch;

        sc_lines = stringarray_create();
        if (sc_lines == NULL) {
                err(1, "malloc");
        }

        if (signal(SIGTSTP, SIG_DFL) == SIG_ERR) {
                err(1, "signal(SIGTSTP)");
        }

        if (initscr() == NULL) {
                errx(1, "Can't sail on this terminal.");
        }
        if (STAT_R >= COLS || SCROLL_Y <= 0) {
                errx(1, "Window/terminal not large enough.");
        }

        view_w = newwin(VIEW_Y, VIEW_X, VIEW_T, VIEW_L);
        slot_w = newwin(SLOT_Y, SLOT_X, SLOT_T, SLOT_L);
        scroll_w = newwin(SCROLL_Y, SCROLL_X, SCROLL_T, SCROLL_L);
        stat_w = newwin(STAT_Y, STAT_X, STAT_T, STAT_L);
        turn_w = newwin(TURN_Y, TURN_X, TURN_T, TURN_L);

        if (view_w == NULL ||
            slot_w == NULL ||
            scroll_w == NULL ||
            stat_w == NULL ||
            turn_w == NULL) {
                endwin();
                errx(1, "Curses initialization failed.");
        }

        leaveok(view_w, 1);
        leaveok(slot_w, 1);
        leaveok(stat_w, 1);
        leaveok(turn_w, 1);
        noecho();
        cbreak();

        /*
         * Define esc-x keys
         */
#if 0
        for (ch = 0; ch < 127; ch++) {
                if (ch != '[' && ch != 'O') {
                        define_esc_key(ch);
                }
        }
#else
        (void)ch;
        (void)define_esc_key;
#endif

        keypad(stdscr, 1);
        keypad(view_w, 1);
        keypad(slot_w, 1);
        keypad(scroll_w, 1);
        keypad(stat_w, 1);
        keypad(turn_w, 1);

        done_curses++;
}

void
cleanupscreen(void)
{
        /* alarm already turned off */
        if (done_curses) {
                if (ingame) {
                        wmove(scroll_w, SCROLL_Y - 1, 0);
                        wclrtoeol(scroll_w);
                        display_redraw();
                } else {
                        move(LINES-1, 0);
                        clrtoeol();
                }
                endwin();
        }
}

////////////////////////////////////////////////////////////
// curses utility functions

/*
 * fill to eol with spaces
 * (useful with A_REVERSE since cleartoeol() does not clear to reversed)
 */
static void
filltoeol(void)
{
        int x;

        for (x = getcurx(stdscr); x < COLS; x++) {
                addch(' ');
        }
}

/*
 * Add a maybe-selected string.
 *
 * Place strings starting at (Y0, X0); this is string ITEM; CURITEM
 * is the selected one; WIDTH is the total width. STR is the string.
 */
static void
mvaddselstr(int y, int x0, int item, int curitem,
            size_t width, const char *str)
{
        size_t i, len;

        len = strlen(str);

        move(y, x0);
        if (curitem == item) {
                attron(A_REVERSE);
        }
        addstr(str);
        if (curitem == item) {
                for (i=len; i<width; i++) {
                        addch(' ');
                }
                attroff(A_REVERSE);
        }
}

/*
 * Likewise but a printf.
 */
static void __printflike(6, 7)
mvselprintw(int y, int x0, int item, int curitem,
            size_t width, const char *fmt, ...)
{
        va_list ap;
        size_t x;

        move(y, x0);
        if (curitem == item) {
                attron(A_REVERSE);
        }
        va_start(ap, fmt);
        vwprintw(stdscr, fmt, ap);
        va_end(ap);
        if (curitem == item) {
                for (x = getcurx(stdscr); x < x0 + width; x++) {
                        addch(' ');
                }
                attroff(A_REVERSE);
        }
}

/*
 * Move up by 1, scrolling if needed.
 */
static void
up(int *posp, int *scrollp)
{
        if (*posp > 0) {
                (*posp)--;
        }
        if (scrollp != NULL) {
                if (*posp < *scrollp) {
                        *scrollp = *posp;
                }
        }
}

/*
 * Move down by 1, scrolling if needed. MAX is the total number of
 * items; VISIBLE is the number that can be visible at once.
 */
static void
down(int *posp, int *scrollp, int max, int visible)
{
        if (max > 0 && *posp < max - 1) {
                (*posp)++;
        }
        if (scrollp != NULL) {
                if (*posp > *scrollp + visible - 1) {
                        *scrollp = *posp - visible + 1;
                }
        }
}

/*
 * Complain briefly.
 */
static void __printflike(3, 4)
oops(int y, int x, const char *fmt, ...)
{
        int oy, ox;
        va_list ap;

        oy = getcury(stdscr);
        ox = getcurx(stdscr);
        move(y, x);
        va_start(ap, fmt);
        vwprintw(stdscr, fmt, ap);
        va_end(ap);
        move(oy, ox);
        wrefresh(stdscr);
        sleep(1);
}

////////////////////////////////////////////////////////////
// scrolling message area

static void
scrollarea_add(const char *text)
{
        char *copy;
        int errsave;

        copy = strdup(text);
        if (copy == NULL) {
                goto nomem;
        }
        if (stringarray_add(sc_lines, copy, NULL)) {
                goto nomem;
        }
        return;

nomem:
        /*
         * XXX this should use leave(), but that won't
         * currently work right.
         */
        errsave = errno;
#if 0
        leave(LEAVE_MALLOC);
#else
        cleanupscreen();
        sync_close(!hasdriver);
        errno = errsave;
        err(1, "malloc");
#endif
}

static void
draw_scroll(void)
{
        unsigned total_lines;
        unsigned visible_lines;
        unsigned index_of_top;
        unsigned index_of_y;
        unsigned y;
        unsigned cursorx;

        werase(scroll_w);

        /* XXX: SCROLL_Y and whatnot should be unsigned too */
        visible_lines = SCROLL_Y - 1;

        total_lines = stringarray_num(sc_lines);
        if (total_lines > visible_lines) {
                index_of_top = total_lines - visible_lines;
        } else {
                index_of_top = 0;
        }
        if (index_of_top < sc_scrollup) {
                index_of_top = 0;
        } else {
                index_of_top -= sc_scrollup;
        }

        for (y = 0; y < visible_lines; y++) {
                index_of_y = index_of_top + y;
                if (index_of_y >= total_lines) {
                        break;
                }
                wmove(scroll_w, y, 0);
                waddstr(scroll_w, stringarray_get(sc_lines, index_of_y));
        }
        if (sc_hasprompt && !sc_hideprompt) {
                wmove(scroll_w, SCROLL_Y-1, 0);
                waddstr(scroll_w, sc_prompt);
                waddstr(scroll_w, sc_buf);
                cursorx = strlen(sc_prompt) + strlen(sc_buf);
                wmove(scroll_w, SCROLL_Y-1, cursorx);
        }
        else {
                wmove(scroll_w, SCROLL_Y-1, 0);
        }
}

/*VARARGS2*/
void
Signal(const char *fmt, struct ship *ship, ...)
{
        va_list ap;
        char format[BUFSIZ];
        char buf[BUFSIZ];

        if (!done_curses)
                return;
        va_start(ap, ship);
        if (*fmt == '\a') {
                beep();
                fmt++;
        }
        fmtship(format, sizeof(format), fmt, ship);
        vsnprintf(buf, sizeof(buf), format, ap);
        va_end(ap);
        scrollarea_add(buf);
}

/*VARARGS2*/
void
Msg(const char *fmt, ...)
{
        va_list ap;
        char buf[BUFSIZ];

        if (!done_curses)
                return;
        va_start(ap, fmt);
        if (*fmt == '\a') {
                beep();
                fmt++;
        }
        vsnprintf(buf, sizeof(buf), fmt, ap);
        va_end(ap);
        scrollarea_add(buf);
}

static void
prompt(const char *p, struct ship *ship)
{
        static char buf[BUFSIZ];

        fmtship(buf, sizeof(buf), p, ship);
        sc_prompt = buf;
        sc_buf = "";
        sc_hasprompt = true;
}

static void
endprompt(void)
{
        sc_prompt = NULL;
        sc_buf = NULL;
        sc_hasprompt = false;
}

/*
 * Next two functions called from newturn() to poke display. Shouldn't
 * exist... XXX
 */

void
display_hide_prompt(void)
{
        sc_hideprompt = true;
        draw_scroll();
        wrefresh(scroll_w);
}

void
display_reshow_prompt(void)
{
        sc_hideprompt = false;
        draw_scroll();
        wrefresh(scroll_w);
}


int
sgetch(const char *p, struct ship *ship, int flag)
{
        int c;
        char input[2];

        prompt(p, ship);
        input[0] = '\0';
        input[1] = '\0';
        sc_buf = input;
        blockalarm();
        draw_scroll();
        wrefresh(scroll_w);
        fflush(stdout);
        unblockalarm();
        while ((c = wgetch(scroll_w)) == EOF)
                ;
        if (flag && c >= ' ' && c < 0x7f) {
                blockalarm();
                input[0] = c;
                draw_scroll();
                wrefresh(scroll_w);
                fflush(stdout);
                unblockalarm();
        }
        endprompt();
        return c;
}

void
sgetstr(const char *pr, char *buf, int n)
{
        int c;
        char *p = buf;

        prompt(pr, (struct ship *)0);
        sc_buf = buf;
        for (;;) {
                *p = 0;
                blockalarm();
                draw_scroll();
                wrefresh(scroll_w);
                fflush(stdout);
                unblockalarm();
                while ((c = wgetch(scroll_w)) == EOF)
                        ;
                switch (c) {
                case '\n':
                case '\r':
                        endprompt();
                        return;
                case '\b':
                        if (p > buf) {
                                /*waddstr(scroll_w, "\b \b");*/
                                p--;
                        }
                        break;
                default:
                        if (c >= ' ' && c < 0x7f && p < buf + n - 1) {
                                *p++ = c;
                                /*waddch(scroll_w, c);*/
                        } else
                                beep();
                }
        }
}

////////////////////////////////////////////////////////////
// drawing of other panes

void
display_force_full_redraw(void)
{
        clear();
}

void
display_redraw(void)
{
        draw_board();
        draw_view();
        draw_turn();
        draw_stat();
        draw_slot();
        draw_scroll();
        /* move the cursor */
        wrefresh(scroll_w);
        /* paranoia */
        fflush(stdout);
}

static void
draw_view(void)
{
        struct ship *sp;

        werase(view_w);
        foreachship(sp) {
                if (sp->file->dir
                    && sp->file->row > viewrow
                    && sp->file->row < viewrow + VIEW_Y
                    && sp->file->col > viewcol
                    && sp->file->col < viewcol + VIEW_X) {
                        wmove(view_w, sp->file->row - viewrow,
                                sp->file->col - viewcol);
                        waddch(view_w, colours(sp));
                        wmove(view_w,
                                sternrow(sp) - viewrow,
                                sterncol(sp) - viewcol);
                        waddch(view_w, sterncolour(sp));
                }
        }
        wrefresh(view_w);
}

static void
draw_turn(void)
{
        wmove(turn_w, 0, 0);
        wprintw(turn_w, "%cTurn %d", dont_adjust?'*':'-', turn);
        wrefresh(turn_w);
}

static void
draw_stat(void)
{
        wmove(stat_w, STAT_1, 0);
        wprintw(stat_w, "Points  %3d\n", mf->points);
        wprintw(stat_w, "Fouls    %2d\n", fouled(ms));
        wprintw(stat_w, "Grapples %2d\n", grappled(ms));

        wmove(stat_w, STAT_2, 0);
        wprintw(stat_w, "    0 %c(%c)\n",
                maxmove(ms, winddir + 3, -1) + '0',
                maxmove(ms, winddir + 3, 1) + '0');
        waddstr(stat_w, "   \\|/\n");
        wprintw(stat_w, "   -^-%c(%c)\n",
                maxmove(ms, winddir + 2, -1) + '0',
                maxmove(ms, winddir + 2, 1) + '0');
        waddstr(stat_w, "   /|\\\n");
        wprintw(stat_w, "    | %c(%c)\n",
                maxmove(ms, winddir + 1, -1) + '0',
                maxmove(ms, winddir + 1, 1) + '0');
        wprintw(stat_w, "   %c(%c)\n",
                maxmove(ms, winddir, -1) + '0',
                maxmove(ms, winddir, 1) + '0');

        wmove(stat_w, STAT_3, 0);
        wprintw(stat_w, "Load  %c%c %c%c\n",
                loadname[mf->loadL], readyname(mf->readyL),
                loadname[mf->loadR], readyname(mf->readyR));
        wprintw(stat_w, "Hull %2d\n", mc->hull);
        wprintw(stat_w, "Crew %2d %2d %2d\n",
                mc->crew1, mc->crew2, mc->crew3);
        wprintw(stat_w, "Guns %2d %2d\n", mc->gunL, mc->gunR);
        wprintw(stat_w, "Carr %2d %2d\n", mc->carL, mc->carR);
        wprintw(stat_w, "Rigg %d %d %d ", mc->rig1, mc->rig2, mc->rig3);
        if (mc->rig4 < 0)
                waddch(stat_w, '-');
        else
                wprintw(stat_w, "%d", mc->rig4);
        wrefresh(stat_w);
}

void
draw_slot(void)
{
        int i;

        if (!boarding(ms, 0)) {
                mvwaddstr(slot_w, 0, 0, "   ");
                mvwaddstr(slot_w, 1, 0, "   ");
        } else {
                wmove(slot_w, 0, 0);
                for (i = 0; i < 3; i++) {
                        waddch(slot_w, obp[i] ? '1'+i : ' ');
                }
                mvwaddstr(slot_w, 1, 0, "OBP");
        }
        if (!boarding(ms, 1)) {
                mvwaddstr(slot_w, 2, 0, "   ");
                mvwaddstr(slot_w, 3, 0, "   ");
        } else {
                wmove(slot_w, 2, 0);
                for (i = 0; i < 3; i++) {
                        waddch(slot_w, dbp[i] ? '1'+i : ' ');
                }
                mvwaddstr(slot_w, 3, 0, "DBP");
        }

        wmove(slot_w, SLOT_Y-4, 0);
        if (mf->RH)
                wprintw(slot_w, "%dRH", mf->RH);
        else
                waddstr(slot_w, "   ");
        wmove(slot_w, SLOT_Y-3, 0);
        if (mf->RG)
                wprintw(slot_w, "%dRG", mf->RG);
        else
                waddstr(slot_w, "   ");
        wmove(slot_w, SLOT_Y-2, 0);
        if (mf->RR)
                wprintw(slot_w, "%dRR", mf->RR);
        else
                waddstr(slot_w, "   ");

#define Y       (SLOT_Y/2)
        wmove(slot_w, 7, 1);
        wprintw(slot_w,"%d", windspeed);
        mvwaddch(slot_w, Y, 0, ' ');
        mvwaddch(slot_w, Y, 2, ' ');
        mvwaddch(slot_w, Y-1, 0, ' ');
        mvwaddch(slot_w, Y-1, 1, ' ');
        mvwaddch(slot_w, Y-1, 2, ' ');
        mvwaddch(slot_w, Y+1, 0, ' ');
        mvwaddch(slot_w, Y+1, 1, ' ');
        mvwaddch(slot_w, Y+1, 2, ' ');
        wmove(slot_w, Y - dr[winddir], 1 - dc[winddir]);
        switch (winddir) {
        case 1:
        case 5:
                waddch(slot_w, '|');
                break;
        case 2:
        case 6:
                waddch(slot_w, '/');
                break;
        case 3:
        case 7:
                waddch(slot_w, '-');
                break;
        case 4:
        case 8:
                waddch(slot_w, '\\');
                break;
        }
        mvwaddch(slot_w, Y + dr[winddir], 1 + dc[winddir], '+');
        wrefresh(slot_w);
}

void
draw_board(void)
{
        int n;

        erase();
        werase(view_w);
        werase(slot_w);
        werase(scroll_w);
        werase(stat_w);
        werase(turn_w);

        move(BOX_T, BOX_L);
        for (n = 0; n < BOX_X; n++)
                addch('-');
        move(BOX_B, BOX_L);
        for (n = 0; n < BOX_X; n++)
                addch('-');
        for (n = BOX_T+1; n < BOX_B; n++) {
                mvaddch(n, BOX_L, '|');
                mvaddch(n, BOX_R, '|');
        }
        mvaddch(BOX_T, BOX_L, '+');
        mvaddch(BOX_T, BOX_R, '+');
        mvaddch(BOX_B, BOX_L, '+');
        mvaddch(BOX_B, BOX_R, '+');
        refresh();

#if 0
#define WSaIM "Wooden Ships & Iron Men"
        wmove(view_w, 2, (VIEW_X - sizeof WSaIM - 1) / 2);
        waddstr(view_w, WSaIM);
        wmove(view_w, 4, (VIEW_X - strlen(cc->name)) / 2);
        waddstr(view_w, cc->name);
        wrefresh(view_w);
#endif

        move(LINE_T, LINE_L);
        printw("Class %d %s (%d guns) '%s' (%c%c)",
                mc->class,
                classname[mc->class],
                mc->guns,
                ms->shipname,
                colours(ms),
                sterncolour(ms));
        refresh();
}

void
display_set_obp(int which, bool show)
{
        obp[which] = show;
}

void
display_set_dbp(int which, bool show)
{
        dbp[which] = show;
}

////////////////////////////////////////////////////////////
// external actions on the display

void
display_scroll_pageup(void)
{
        unsigned total_lines, visible_lines, limit;
        unsigned pagesize = SCROLL_Y - 2;

        total_lines = stringarray_num(sc_lines);
        visible_lines = SCROLL_Y - 1;
        limit = total_lines - visible_lines;

        sc_scrollup += pagesize;
        if (sc_scrollup > limit) {
                sc_scrollup = limit;
        }
}

void
display_scroll_pagedown(void)
{
        unsigned pagesize = SCROLL_Y - 2;

        if (sc_scrollup < pagesize) {
                sc_scrollup = 0;
        } else {
                sc_scrollup -= pagesize;
        }
}

void
centerview(void)
{
        viewrow = mf->row - VIEW_Y / 2;
        viewcol = mf->col - VIEW_X / 2;
}

void
upview(void)
{
        viewrow -= VIEW_Y / 3;
}

void
downview(void)
{
        viewrow += VIEW_Y / 3;
}

void
leftview(void)
{
        viewcol -= VIEW_X / 5;
}

void
rightview(void)
{
        viewcol += VIEW_X / 5;
}

/* Called from newturn()... rename? */
void
display_adjust_view(void)
{
        if (dont_adjust)
                return;
        if (mf->row < viewrow + VIEW_Y/4)
                viewrow = mf->row - (VIEW_Y - VIEW_Y/4);
        else if (mf->row > viewrow + (VIEW_Y - VIEW_Y/4))
                viewrow = mf->row - VIEW_Y/4;
        if (mf->col < viewcol + VIEW_X/8)
                viewcol = mf->col - (VIEW_X - VIEW_X/8);
        else if (mf->col > viewcol + (VIEW_X - VIEW_X/8))
                viewcol = mf->col - VIEW_X/8;
}

////////////////////////////////////////////////////////////
// starting game

static bool shipselected;
static int loadpos;

static int
nextload(int load)
{
        switch (load) {
            case L_ROUND: return L_GRAPE;
            case L_GRAPE: return L_CHAIN;
            case L_CHAIN: return L_DOUBLE;
            case L_DOUBLE: return L_ROUND;
        }
        return L_ROUND;
}

static int
loadbychar(int ch)
{
        switch (ch) {
            case 'r': return L_ROUND;
            case 'g': return L_GRAPE;
            case 'c': return L_CHAIN;
            case 'd': return L_DOUBLE;
        }
        return L_ROUND;
}

static const char *
loadstr(int load)
{
        switch (load) {
            case L_ROUND: return "round";
            case L_GRAPE: return "grape";
            case L_CHAIN: return "chain";
            case L_DOUBLE: return "double";
        }
        return "???";
}

static void
displayshiplist(void)
{
        struct ship *sp;
        int which;

        erase();

        attron(A_BOLD);
        mvaddstr(1, 4, cc->name);
        attroff(A_BOLD);

        which = 0;
        foreachship(sp) {
                mvselprintw(which + 3, 4, which, player, 60,
                            "  %2d:  %-10s %-15s  (%-2d pts)   %s",
                            sp->file->index,
                            countryname[sp->nationality],
                            sp->shipname,
                            sp->specs->pts,
                            saywhat(sp, 1));
                which++;
        }

        if (!shipselected) {
                mvaddstr(15, 4, "Choose your ship");
                move(player + 3, 63);
        } else {
                mvselprintw(15, 4, 0, loadpos, 32,
                            "Initial left broadside: %s", loadstr(mf->loadL));
                mvselprintw(16, 4, 1, loadpos, 32,
                            "Initial right broadside: %s", loadstr(mf->loadR));
                mvselprintw(17, 4, 2, loadpos, 32, "Set sail");
                move(loadpos+15, 35);
        }

        wrefresh(stdscr);
}

static int
pickship(void)
{
        struct File *fp;
        struct ship *sp;
        bool done;
        int ch;

        for (;;) {
                foreachship(sp)
                        if (sp->file->captain[0] == 0 && !sp->file->struck
                            && sp->file->captured == 0)
                                break;
                if (sp >= ls) {
                        return -1;
                }
                player = sp - SHIP(0);
                if (randomize) {
                        /* nothing */
                } else {
                        done = false;
                        while (!done) {
                                displayshiplist();

                                ch = getch();
                                switch (ch) {
                                    case 12 /*^L*/:
                                        clear();
                                        break;
                                    case '\r':
                                    case '\n':
                                        done = true;
                                        break;
                                    case 7 /*^G*/:
                                    case 8 /*^H*/:
                                    case 27 /*ESC*/:
                                    case 127 /*^?*/:
                                        beep();
                                        break;
                                    case 16 /*^P*/:
                                    case KEY_UP:
                                        up(&player, NULL);
                                        break;
                                    case 14 /*^N*/:
                                    case KEY_DOWN:
                                        down(&player, NULL, cc->vessels,
                                             cc->vessels);
                                        break;
                                    default:
                                        beep();
                                        break;
                                }
                        }
                }
                if (player < 0)
                        continue;
                if (Sync() < 0)
                        leave(LEAVE_SYNC);
                fp = SHIP(player)->file;
                if (fp->captain[0] || fp->struck || fp->captured != 0)
                        oops(16, 4, "That ship is taken.");
                else
                        break;
        }
        return 0;
}

static void
pickload(void)
{
        bool done;
        int ch;

        mf->loadL = L_ROUND;
        mf->loadR = L_ROUND;

        loadpos = 0;
        done = false;
        while (!done) {
                displayshiplist();

                ch = getch();
                switch (ch) {
                    case 12 /*^L*/:
                        clear();
                        break;
                    case 'r':
                    case 'g':
                    case 'c':
                    case 'd':
                        switch (loadpos) {
                            case 0: mf->loadL = loadbychar(ch); break;
                            case 1: mf->loadR = loadbychar(ch); break;
                            case 2: beep(); break;
                        }
                        break;
                    case '\r':
                    case '\n':
                        switch (loadpos) {
                            case 0: mf->loadL = nextload(mf->loadL); break;
                            case 1: mf->loadR = nextload(mf->loadR); break;
                            case 2: done = true; break;
                        }
                        break;
                    case 7 /*^G*/:
                    case 8 /*^H*/:
                    case 27 /*ESC*/:
                    case 127 /*^?*/:
                        beep();
                        break;
                    case 16 /*^P*/:
                    case KEY_UP:
                        up(&loadpos, NULL);
                        break;
                    case 14 /*^N*/:
                    case KEY_DOWN:
                        down(&loadpos, NULL, 3, 3);
                        break;
                    default:
                        beep();
                        break;
                }
        }
        mf->readyR = R_LOADED|R_INITIAL;
        mf->readyL = R_LOADED|R_INITIAL;
}

static void
startgame(void)
{

        ingame = true;
        shipselected = false;

        pl_main_init();

        hasdriver = sync_exists(game);
        if (sync_open() < 0) {
                oops(21, 10, "syncfile: %s", strerror(errno));
                pl_main_uninit();
                ingame = false;
                return;
        }

        if (hasdriver) {
                mvaddstr(21, 10, "Synchronizing with the other players...");
                wrefresh(stdscr);
                fflush(stdout);
                if (Sync() < 0)
                        leave(LEAVE_SYNC);
        } else {
                mvaddstr(21, 10, "Starting driver...");
                wrefresh(stdscr);
                fflush(stdout);
                startdriver();
        }

        if (pickship() < 0) {
                oops(21, 10, "All ships taken in that scenario.");
                sync_close(0);
                people = 0;
                pl_main_uninit();
                ingame = false;
                return;
        }
        shipselected = true;

        ms = SHIP(player);
        mf = ms->file;
        mc = ms->specs;

        pickload();

        pl_main();
        ingame = false;
}

////////////////////////////////////////////////////////////
// scenario picker

static int pickerpos;
static int pickerscroll;

static const char *
absdirectionname(int dir)
{
        switch (dir) {
            case 1: return "South";
            case 2: return "Southwest";
            case 3: return "West";
            case 4: return "Northwest";
            case 5: return "North";
            case 6: return "Northeast";
            case 7: return "East";
            case 8: return "Southeast";
        }
        return "?";
}

static const char *
windname(int wind)
{
        switch (wind) {
            case 0: return "calm";
            case 1: return "light breeze";
            case 2: return "moderate breeze";
            case 3: return "fresh breeze";
            case 4: return "strong breeze";
            case 5: return "gale";
            case 6: return "full gale";
            case 7: return "hurricane";
        }
        return "???";
}

static const char *
nationalityname(int nationality)
{
        switch (nationality) {
            case N_A: return "a";
            case N_B: return "b";
            case N_S: return "s";
            case N_F: return "f";
            case N_J: return "j";
            case N_D: return "d";
            case N_K: return "k";
            case N_O: return "o";
        }
        return "?";
}

static void
drawpicker(void)
{
        int y, sc, i;
        struct ship *ship;

        erase();

        mvaddstr(0, 0, "## SHIPS  TITLE");
        for (y=1; y<LINES-11; y++) {
                sc = (y-1) + pickerscroll;
                if (sc < NSCENE) {
                        mvselprintw(y, 0, sc, pickerpos, 56,
                                    "%-2d %-5d  %s",
                                    sc, scene[sc].vessels, scene[sc].name);
                }
        }

        mvprintw(2, 60 + 2, "%s wind",
                 absdirectionname(scene[pickerpos].winddir));
        mvprintw(3, 60 + 2, "(%s)",
                 windname(scene[pickerpos].windspeed));

        for (i=0; i<scene[pickerpos].vessels; i++) {
                ship = &scene[pickerpos].ship[i];
                mvprintw(LINES-10 + i, 0,
                         "(%s) %-16s %3d gun %s (%s crew) (%d pts)",
                         nationalityname(ship->nationality),
                         ship->shipname,
                         ship->specs->guns,
                         shortclassname[ship->specs->class],
                         qualname[ship->specs->qual],
                         ship->specs->pts);
        }

        move(1 + pickerpos - pickerscroll, 55);
        wrefresh(stdscr);
}

static int
pickscenario(int initpos)
{
        int ch;

        pickerpos = initpos;
        if (pickerpos < 0) {
                pickerpos = 0;
        }

        while (1) {
                drawpicker();
                ch = getch();
                switch (ch) {
                    case 12 /*^L*/:
                        clear();
                        break;
                    case '\r':
                    case '\n':
                        return pickerpos;
                    case 7 /*^G*/:
                    case 8 /*^H*/:
                    case 27 /*ESC*/:
                    case 127 /*^?*/:
                        return initpos;
                    case 16 /*^P*/:
                    case KEY_UP:
                        up(&pickerpos, &pickerscroll);
                        break;
                    case 14 /*^N*/:
                    case KEY_DOWN:
                        down(&pickerpos, &pickerscroll, NSCENE, LINES-12);
                        break;
                    default:
                        beep();
                        break;
                }
        }
        return pickerpos;
}

////////////////////////////////////////////////////////////
// setup menus

#define MAINITEMS_NUM 5
#define STARTITEMS_NUM 4
#define OPTIONSITEMS_NUM 5

static int mainpos;
static bool connected;

static bool joinactive;
static int joinpos;
static int joinscroll;
static int joinable[NSCENE];
static int numjoinable;

static bool startactive;
static int startpos;
static int startscenario;

static bool optionsactive;
static int optionspos;
static char o_myname[MAXNAMESIZE];
static bool o_randomize;
static bool o_longfmt;
static bool o_nobells;


/*
 * this and sgetstr() should share code
 */
static void
startup_getstr(int y, int x, char *buf, size_t max)
{
        size_t pos = 0;
        int ch;

        for (;;) {
                buf[pos] = 0;
                move(y, x);
                addstr(buf);
                clrtoeol();
                wrefresh(stdscr);
                fflush(stdout);

                ch = getch();
                switch (ch) {
                case '\n':
                case '\r':
                        return;
                case '\b':
                        if (pos > 0) {
                                /*waddstr(scroll_w, "\b \b");*/
                                pos--;
                        }
                        break;
                default:
                        if (ch >= ' ' && ch < 0x7f && pos < max - 1) {
                                buf[pos++] = ch;
                        } else {
                                beep();
                        }
                }
        }
}

static void
changename(void)
{
        mvaddstr(LINES-2, COLS/2, "Enter your name:");
        startup_getstr(LINES-1, COLS/2, o_myname, sizeof(o_myname));
}

static void
checkforgames(void)
{
        int i;
        int prev;

        if (numjoinable > 0) {
                prev = joinable[joinpos];
        } else {
                prev = 0;
        }

        numjoinable = 0;
        for (i = 0; i < NSCENE; i++) {
                if (!sync_exists(i)) {
                        continue;
                }
                if (i < prev) {
                        joinpos = numjoinable;
                }
                joinable[numjoinable++] = i;
        }
        if (joinpos > numjoinable) {
                joinpos = (numjoinable > 0) ? numjoinable - 1 : 0;
        }
        if (joinscroll > joinpos) {
                joinscroll = (joinpos > 0) ? joinpos - 1 : 0;
        }
}

static void
drawstartmenus(void)
{
        const int mainy0 = 8;
        const int mainx0 = 12;

        erase();

        mvaddstr(5, 10, "Wooden Ships & Iron Men");

        mvaddselstr(mainy0+0, mainx0, 0, mainpos, 17, "Join a game");
        mvaddselstr(mainy0+1, mainx0, 1, mainpos, 17, "Start a game");
        mvaddselstr(mainy0+2, mainx0, 2, mainpos, 17, "Options");
        mvaddselstr(mainy0+3, mainx0, 3, mainpos, 17, "Show high scores");
        mvaddselstr(mainy0+4, mainx0, 4, mainpos, 17, "Quit");

        mvprintw(15, 10, "Captain %s", myname);
        if (connected) {
                mvaddstr(16, 10, "Connected via scratch files.");
        } else {
                mvaddstr(16, 10, "Not connected.");
        }

        if (joinactive) {
                int y0, leavey = 0, i, sc;

                mvaddstr(0, COLS/2, "## SHIPS  TITLE");
                y0 = 1;
                for (i = 0; i < numjoinable; i++) {
                        if (i >= joinscroll && i < joinscroll + LINES-1) {
                                move(y0 + i - joinscroll, COLS/2);
                                if (i == joinpos) {
                                        attron(A_REVERSE);
                                }
                                sc = joinable[i];
                                printw("%-2d %-5d  %s",
                                       sc, scene[sc].vessels, scene[sc].name);
                                if (i == joinpos) {
                                        filltoeol();
                                        attroff(A_REVERSE);
                                        leavey = y0 + i - joinscroll;
                                }
                        }
                }
                mvaddstr(19, 10, "(Esc to abort)");
                if (numjoinable > 0) {
                        mvaddstr(18, 10, "Choose a game to join.");
                        move(leavey, COLS-1);
                } else {
                        mvaddstr(2, COLS/2, "No games.");
                        mvaddstr(18, 10, "Press return to refresh.");
                }

        } else if (startactive) {
                const char *name;

                mvaddstr(18, 10, "Start a new game");
                mvaddstr(19, 10, "(Esc to abort)");
                mvaddstr(2, COLS/2, "New game");

                name = (startscenario < 0) ?
                        "not selected" : scene[startscenario].name;

                mvselprintw(4, COLS/2, 0, startpos, COLS/2 - 1,
                            "Scenario: %s", name);
                mvaddselstr(5, COLS/2, 1, startpos, COLS/2 - 1,
                            "Visibility: local");
                mvaddselstr(6, COLS/2, 2, startpos, COLS/2 - 1,
                            "Password: unset");
                mvaddselstr(7, COLS/2, 3, startpos, COLS/2 - 1,
                            "Start game");
                move(4+startpos, COLS - 2);

        } else if (optionsactive) {
                mvaddstr(18, 10, "Adjust options");
                mvaddstr(19, 10, "(Esc to abort)");
                mvaddstr(2, COLS/2, "Adjust options");

                mvselprintw(4, COLS/2, 0, optionspos, COLS/2-1,
                            "Your name: %s", o_myname);
                mvselprintw(5, COLS/2, 1, optionspos, COLS/2-1,
                            "Auto-pick ships: %s", o_randomize ? "ON" : "off");
                mvselprintw(6, COLS/2, 2, optionspos, COLS/2-1,
                            "Usernames in scores: %s",
                            o_longfmt ? "ON" : "off");
                mvselprintw(7, COLS/2, 3, optionspos, COLS/2-1,
                            "Beeping: %s", o_nobells ? "OFF" : "on");
                mvselprintw(8, COLS/2, 4, optionspos, COLS/2-1,
                            "Apply changes");
                move(4+optionspos, COLS - 2);

        } else {
                move(mainy0 + mainpos, mainx0 + 16);
        }

        wrefresh(stdscr);
        fflush(stdout);
}

void
startup(void)
{
        int ch;

        connected = false;
        mainpos = 0;

        joinactive = false;
        joinpos = 0;
        joinscroll = 0;
        numjoinable = 0;

        startactive = false;
        startpos = 0;
        startscenario = -1;

        optionsactive = false;
        optionspos = 0;

        while (1) {
                if (joinactive) {
                        checkforgames();
                }
                drawstartmenus();
                ch = getch();
                switch (ch) {
                    case 12 /*^L*/:
                        clear();
                        break;
                    case '\r':
                    case '\n':
                        if (joinactive && numjoinable > 0) {
                                game = joinable[joinpos];
                                startgame();
                                joinactive = false;
                        } else if (startactive) {
                                switch (startpos) {
                                    case 0:
                                        startscenario = pickscenario(startscenario);
                                        startpos = 3;
                                        break;
                                    case 1:
                                    case 2:
                                        oops(21, 10, "That doesn't work yet.");
                                        break;
                                    case 3:
                                        if (startscenario >= 0) {
                                                game = startscenario;
                                                /* can't do this here yet */
                                                /*startdriver();*/
                                                startgame();
                                                startactive = false;
                                                startscenario = -1;
                                        } else {
                                                oops(21, 10,
                                                     "Pick a scenario.");
                                        }
                                        break;
                                }
                        } else if (optionsactive) {
                                switch (optionspos) {
                                    case 0: changename(); break;
                                    case 1: o_randomize = !o_randomize; break;
                                    case 2: o_longfmt = !o_longfmt; break;
                                    case 3: o_nobells = !o_nobells; break;
                                    case 4:
                                        strlcpy(myname, o_myname,
                                                sizeof(myname));
                                        randomize = o_randomize;
                                        longfmt = o_longfmt;
                                        nobells = o_nobells;
                                        optionsactive = false;
                                        break;
                                }
                        } else {
                                switch (mainpos) {
                                    case 0: joinactive = true; break;
                                    case 1: startactive = true; break;
                                    case 2:
                                        strlcpy(o_myname, myname,
                                                sizeof(o_myname));
                                        o_randomize = randomize;
                                        o_longfmt = longfmt;
                                        o_nobells = nobells;
                                        optionsactive = true;
                                        break;
                                    case 3: lo_curses(); break;
                                    case 4: return;
                                }
                        }
                        break;
                    case 7 /*^G*/:
                    case 8 /*^H*/:
                    case 27 /*ESC*/:
                    case 127 /*^?*/:
                        if (joinactive) {
                                joinactive = false;
                        } else if (startactive) {
                                startactive = false;
                        } else if (optionsactive) {
                                optionsactive = false;
                        } else {
                                /* nothing */
                        }
                        break;
                    case 16 /*^P*/:
                    case KEY_UP:
                        if (joinactive) {
                                up(&joinpos, &joinscroll);
                        } else if (startactive) {
                                up(&startpos, NULL);
                        } else if (optionsactive) {
                                up(&optionspos, NULL);
                        } else {
                                up(&mainpos, NULL);
                        }
                        break;
                    case 14 /*^N*/:
                    case KEY_DOWN:
                        if (joinactive) {
                                down(&joinpos, &joinscroll,
                                     numjoinable, LINES-1);
                        } else if (startactive) {
                                down(&startpos, NULL,
                                     STARTITEMS_NUM, STARTITEMS_NUM);
                        } else if (optionsactive) {
                                down(&optionspos, NULL,
                                     OPTIONSITEMS_NUM, OPTIONSITEMS_NUM);
                        } else {
                                down(&mainpos, NULL,
                                     MAINITEMS_NUM, MAINITEMS_NUM);
                        }
                        break;
                    default:
                        beep();
                        break;
                }
        }
}