/* NetHack 3.6	tile2bin.c	$NHDT-Date: 1457207041 2016/03/05 19:44:01 $  $NHDT-Branch: chasonr $:$NHDT-Revision: 1.9 $ */
/*   Copyright (c) NetHack PC Development Team 1993, 1994, 1995     */
/*   NetHack may be freely redistributed.  See license for details. */

/*
 * Edit History:
 *
 *	Initial Creation			M.Allison	93/10/21
 *	ifndef MONITOR_HEAP for heaputil.c	P.Winner	94/03/12
 *      added Borland C _stklen variable	Y.Sapir		94/05/01
 *	fixed to use text tiles from win/share	M.Allison	95/01/31
 *
 */

#include "hack.h"
#include "pcvideo.h"
#include "tile.h"
#include "pctiles.h"

#include <dos.h>
#ifndef MONITOR_HEAP
#include <stdlib.h>
#endif
#include <time.h>

#ifdef __GO32__
#include <unistd.h>
#endif

#if defined(_MSC_VER) && _MSC_VER >= 700
#pragma warning(disable : 4309) /* initializing */
#pragma warning(disable : 4018) /* signed/unsigned mismatch */
#pragma warning(disable : 4131) /* old style declarator */
#pragma warning(disable : 4127) /* conditional express. is constant */
#endif

#ifdef __BORLANDC__
extern unsigned _stklen = STKSIZ;
#endif

/* Produce only a planar file if building the overview file; with packed
   files, we can make overview-size tiles on the fly */
#if defined(OVERVIEW_FILE) && defined(PACKED_FILE)
#undef PACKED_FILE
#endif

extern char *FDECL(tilename, (int, int));

#ifdef PLANAR_FILE
char masktable[8] = { 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 };
char charcolors[MAXCOLORMAPSIZE];
#ifdef OVERVIEW_FILE
struct overview_planar_cell_struct planetile;
#else
struct planar_cell_struct planetile;
#endif
FILE *tibfile1;
#endif

#ifdef PACKED_FILE
char packtile[TILE_Y][TILE_X];
FILE *tibfile2;
#endif

int num_colors;
pixel pixels[TILE_Y][TILE_X];
struct tibhdr_struct tibheader;

static void FDECL(write_tibtile, (int));
static void FDECL(write_tibheader, (FILE *, struct tibhdr_struct *));
static void FDECL(build_tibtile, (pixel(*) [TILE_X], BOOLEAN_P));
static void NDECL(remap_colors);

#ifndef OVERVIEW_FILE
char *tilefiles[] = { "../win/share/monsters.txt", "../win/share/objects.txt",
                      "../win/share/other.txt" };
#else
char *tilefiles[] = { "../win/share/monthin.txt", "../win/share/objthin.txt",
                      "../win/share/oththin.txt" };
#endif

int tilecount;
int filenum;
int paletteflag;

int
main(argc, argv)
int argc;
char *argv[];
{
    int i;
    struct tm *newtime;
    time_t aclock;
    char *paletteptr;
    unsigned num_monsters = 0;

    if (argc != 1) {
        Fprintf(stderr, "usage: tile2bin (from the util directory)\n");
        exit(EXIT_FAILURE);
    }

#ifdef PLANAR_FILE
#ifndef OVERVIEW_FILE
    tibfile1 = fopen(NETHACK_PLANAR_TILEFILE, WRBMODE);
#else
    tibfile1 = fopen(NETHACK_OVERVIEW_TILEFILE, WRBMODE);
#endif
    if (tibfile1 == (FILE *) 0) {
        Fprintf(stderr, "Unable to open output file %s\n",
#ifndef OVERVIEW_FILE
                NETHACK_PLANAR_TILEFILE);
#else
                NETHACK_OVERVIEW_TILEFILE);
#endif
        exit(EXIT_FAILURE);
    }
#endif

#ifdef PACKED_FILE
    tibfile2 = fopen(NETHACK_PACKED_TILEFILE, WRBMODE);
    if (tibfile2 == (FILE *) 0) {
        Fprintf(stderr, "Unable to open output file %s\n",
                NETHACK_PACKED_TILEFILE);
        exit(EXIT_FAILURE);
    }
#endif
    time(&aclock);
    newtime = localtime(&aclock);

    tilecount = 0;
    paletteflag = 0;
    filenum = 0;
    while (filenum < 3) {
        if (!fopen_text_file(tilefiles[filenum], RDTMODE)) {
            Fprintf(stderr,
                    "usage: tile2bin (from the util or src directory)\n");
            exit(EXIT_FAILURE);
        }
        num_colors = colorsinmap;
        if (num_colors > 62) {
            Fprintf(stderr, "too many colors (%d)\n", num_colors);
            exit(EXIT_FAILURE);
        }

        if (!paletteflag) {
            remap_colors();
            paletteptr = tibheader.palette;
            for (i = 0; i < num_colors; i++) {
                *paletteptr++ = ColorMap[CM_RED][i],
                *paletteptr++ = ColorMap[CM_GREEN][i],
                *paletteptr++ = ColorMap[CM_BLUE][i];
            }
            paletteflag++;
        }

        while (read_text_tile(pixels)) {
            build_tibtile(pixels, FALSE);
            write_tibtile(tilecount);
            tilecount++;
        }

        (void) fclose_text_file();
        if (filenum == 0) {
            num_monsters = tilecount;
        }
        ++filenum;
    }

    /* Build the statue glyphs */
    if (!fopen_text_file(tilefiles[0], RDTMODE)) {
        Fprintf(stderr,
                "usage: tile2bin (from the util or src directory)\n");
        exit(EXIT_FAILURE);
    }

    while (read_text_tile(pixels)) {
        build_tibtile(pixels, TRUE);
        write_tibtile(tilecount);
        tilecount++;
    }

    (void) fclose_text_file();

#if defined(_MSC_VER)
    tibheader.compiler = MSC_COMP;
#elif defined(__BORLANDC__)
    tibheader.compiler = BC_COMP;
#elif defined(__GO32__)
    tibheader.compiler = DJGPP_COMP;
#else
    tibheader.compiler = OTHER_COMP;
#endif

    strncpy(tibheader.ident, "NetHack 3.6 MSDOS Port binary tile file", 80);
    strncpy(tibheader.timestamp, asctime(newtime), 24);
    tibheader.timestamp[25] = '\0';
    tibheader.tilecount = tilecount;
    tibheader.numcolors = num_colors;
#ifdef PLANAR_FILE
    tibheader.tilestyle = PLANAR_STYLE;
    write_tibheader(tibfile1, &tibheader);
    (void) fclose(tibfile1);
#ifndef OVERVIEW_FILE
    Fprintf(stderr, "Total of %d planar tiles written to %s.\n", tilecount,
            NETHACK_PLANAR_TILEFILE);
#else
    Fprintf(stderr, "Total of %d planar tiles written to %s.\n", tilecount,
            NETHACK_OVERVIEW_TILEFILE);
#endif
#endif

#ifdef PACKED_FILE
    tibheader.tilestyle = PACKED_STYLE;
    write_tibheader(tibfile2, &tibheader);
    Fprintf(stderr, "Total of %d packed tiles written to %s.\n", tilecount,
            NETHACK_PACKED_TILEFILE);
    (void) fclose(tibfile2);
#endif

    exit(EXIT_SUCCESS);
    /*NOTREACHED*/
    return 0;
}

static void
write_tibheader(fileptr, tibhdr)
FILE *fileptr;
struct tibhdr_struct *tibhdr;
{
    if (fseek(fileptr, 0L, SEEK_SET)) {
        Fprintf(stderr, "Error writing header to tile file\n");
    }
    fwrite(tibhdr, sizeof(struct tibhdr_struct), 1, fileptr);
}

static void
build_tibtile(pixels, statues)
pixel (*pixels)[TILE_X];
boolean statues;
{
    static int graymappings[] = {
        /* .  A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  */
        0, 1, 17, 18, 19, 20, 27, 22, 23, 24, 25, 26, 21, 15, 13, 14, 14
    };
    int i, j, k, co_off;
    unsigned char co_mask, tmp;

#ifdef PLANAR_FILE
#ifndef OVERVIEW_FILE
    memset((void *) &planetile, 0, sizeof(struct planar_cell_struct));
#else
    memset((void *) &planetile, 0,
           sizeof(struct overview_planar_cell_struct));
#endif
#endif
    for (j = 0; j < TILE_Y; j++) {
        for (i = 0; i < TILE_X; i++) {
            for (k = 0; k < num_colors; k++) {
                if (ColorMap[CM_RED][k] == pixels[j][i].r
                    && ColorMap[CM_GREEN][k] == pixels[j][i].g
                    && ColorMap[CM_BLUE][k] == pixels[j][i].b)
                    break;
            }
            if (k >= num_colors)
                Fprintf(stderr, "color not in colormap!\n");
            if (statues) {
                k = graymappings[k];
            } else {
                if (k == 16) {
                    k = 13;
                } else if (k == 13) {
                    k = 16;
                }
            }
#ifdef PACKED_FILE
            packtile[j][i] = k;
#endif

#ifdef PLANAR_FILE
            if (i > 7) {
                co_off = 1;
                co_mask = masktable[i - 8];
            } else {
                co_off = 0;
                co_mask = masktable[i];
            }

            if (!statues) {
                if (k == 28) {
                    k = 0;
                }
                if (k >= 16) {
                    fprintf(stderr, "Warning: pixel value %d in 16 color bitmap\n", k);
                }
            }
            tmp = planetile.plane[0].image[j][co_off];
            planetile.plane[0].image[j][co_off] =
                (k & 0x0008) ? (tmp | co_mask) : (tmp & ~co_mask);

            tmp = planetile.plane[1].image[j][co_off];
            planetile.plane[1].image[j][co_off] =
                (k & 0x0004) ? (tmp | co_mask) : (tmp & ~co_mask);

            tmp = planetile.plane[2].image[j][co_off];
            planetile.plane[2].image[j][co_off] =
                (k & 0x0002) ? (tmp | co_mask) : (tmp & ~co_mask);

            tmp = planetile.plane[3].image[j][co_off];
            planetile.plane[3].image[j][co_off] =
                (k & 0x0001) ? (tmp | co_mask) : (tmp & ~co_mask);
#endif /* PLANAR_FILE */
        }
    }
}

static void
write_tibtile(recnum)
int recnum;
{
    long fpos;

#ifdef PLANAR_FILE
#ifndef OVERVIEW_FILE
    fpos = ((long) (recnum) * (long) sizeof(struct planar_cell_struct))
           + (long) TIBHEADER_SIZE;
#else
    fpos =
        ((long) (recnum) * (long) sizeof(struct overview_planar_cell_struct))
        + (long) TIBHEADER_SIZE;
#endif
    if (fseek(tibfile1, fpos, SEEK_SET)) {
        Fprintf(stderr, "Error seeking before planar tile write %d\n",
                recnum);
    }
#ifndef OVERVIEW_FILE
    fwrite(&planetile, sizeof(struct planar_cell_struct), 1, tibfile1);
#else
    fwrite(&planetile, sizeof(struct overview_planar_cell_struct), 1,
           tibfile1);
#endif
#endif

#ifdef PACKED_FILE
    fpos =
        ((long) (recnum) * (long) sizeof(packtile)) + (long) TIBHEADER_SIZE;
    if (fseek(tibfile2, fpos, SEEK_SET)) {
        Fprintf(stderr, "Error seeking before packed tile write %d\n",
                recnum);
    }
    fwrite(&packtile, sizeof(packtile), 1, tibfile2);
#endif
}

static void
remap_colors()
{
    char swap;

    swap = ColorMap[CM_RED][13];
    ColorMap[CM_RED][13] = ColorMap[CM_RED][16];
    ColorMap[CM_RED][16] = swap;
    swap = ColorMap[CM_GREEN][13];
    ColorMap[CM_GREEN][13] = ColorMap[CM_GREEN][16];
    ColorMap[CM_GREEN][16] = swap;
    swap = ColorMap[CM_BLUE][13];
    ColorMap[CM_BLUE][13] = ColorMap[CM_BLUE][16];
    ColorMap[CM_BLUE][16] = swap;
}