/*	SCCS Id: @(#)mapglyph.c	3.4	2000/08/18	*/
/* Copyright (c) David Cohrs, 1991				  */
/* NetHack may be freely redistributed.  See license for details. */

#include "hack.h"
#if defined(TTY_GRAPHICS)
#include "wintty.h"	/* for prototype of has_color() only */
#endif
#include "color.h"

int explcolors[] = {
	CLR_BLACK,	/* dark    */
	CLR_GREEN,	/* noxious */
	CLR_BROWN,	/* muddy   */
	CLR_BLUE,	/* wet     */
	CLR_MAGENTA,	/* magical */
	CLR_ORANGE,	/* fiery   */
	CLR_WHITE,	/* frosty  */
};

#if !defined(TTY_GRAPHICS)
#define has_color(n)  TRUE
#endif

#ifdef TEXTCOLOR
#define zap_color(n)  color = iflags.use_color ? zapcolors[n] : NO_COLOR
#define cmap_color(n) color = iflags.use_color ? defsyms[n].color : NO_COLOR
#define obj_color(n)  color = iflags.use_color ? objects[n].oc_color : NO_COLOR
#define mon_color(n)  color = iflags.use_color ? mons[n].mcolor : NO_COLOR
#define invis_color(n) color = NO_COLOR
#define pet_color(n)  color = iflags.use_color ? mons[n].mcolor : NO_COLOR
#define warn_color(n) color = iflags.use_color ? def_warnsyms[n].color : NO_COLOR
#define explode_color(n) color = iflags.use_color ? explcolors[n] : NO_COLOR
# if defined(REINCARNATION) && defined(ASCIIGRAPH)
#  define ROGUE_COLOR
# endif

#else	/* no text color */

#define zap_color(n)
#define cmap_color(n)
#define obj_color(n)
#define mon_color(n)
#define invis_color(n)
#define pet_color(c)
#define warn_color(n)
#define explode_color(n)
#endif

#ifdef ROGUE_COLOR
# if defined(USE_TILES) && defined(MSDOS)
#define HAS_ROGUE_IBM_GRAPHICS (iflags.IBMgraphics && !iflags.grmode && \
	Is_rogue_level(&u.uz))
# else
#define HAS_ROGUE_IBM_GRAPHICS (iflags.IBMgraphics && Is_rogue_level(&u.uz))
# endif
#endif

/*ARGSUSED*/
void
mapglyph(glyph, ochar, ocolor, ospecial, x, y)
int glyph, *ocolor, x, y;
int *ochar;
unsigned *ospecial;
{
	register int offset;
	int color = NO_COLOR;
	uchar ch;
	unsigned special = 0;

    /*
     *  Map the glyph back to a character and color.
     *
     *  Warning:  For speed, this makes an assumption on the order of
     *		  offsets.  The order is set in display.h.
     */
    if ((offset = (glyph - GLYPH_WARNING_OFF)) >= 0) {	/* a warning flash */
    	ch = warnsyms[offset];
# ifdef ROGUE_COLOR
	if (HAS_ROGUE_IBM_GRAPHICS)
	    color = NO_COLOR;
	else
# endif
	    warn_color(offset);
    } else if ((offset = (glyph - GLYPH_SWALLOW_OFF)) >= 0) {	/* swallow */
	/* see swallow_to_glyph() in display.c */
	ch = (uchar) showsyms[S_sw_tl + (offset & 0x7)];
#ifdef ROGUE_COLOR
	if (HAS_ROGUE_IBM_GRAPHICS && iflags.use_color)
	    color = NO_COLOR;
	else
#endif
	    mon_color(offset >> 3);
    } else if ((offset = (glyph - GLYPH_ZAP_OFF)) >= 0) {	/* zap beam */
	/* see zapdir_to_glyph() in display.c */
	ch = showsyms[S_vbeam + (offset & 0x3)];
#ifdef ROGUE_COLOR
	if (HAS_ROGUE_IBM_GRAPHICS && iflags.use_color)
	    color = NO_COLOR;
	else
#endif
	    zap_color((offset >> 2));
    } else if ((offset = (glyph - GLYPH_EXPLODE_OFF)) >= 0) {	/* explosion */
	ch = showsyms[(offset % MAXEXPCHARS) + S_explode1];
	explode_color(offset / MAXEXPCHARS);
    } else if ((offset = (glyph - GLYPH_CMAP_OFF)) >= 0) {	/* cmap */
	ch = showsyms[offset];
#ifdef ROGUE_COLOR
	if (HAS_ROGUE_IBM_GRAPHICS && iflags.use_color) {
	    if (offset >= S_vwall && offset <= S_hcdoor)
		color = CLR_BROWN;
	    else if (offset >= S_arrow_trap && offset <= S_polymorph_trap)
		color = CLR_MAGENTA;
	    else if (offset == S_corr || offset == S_litcorr)
		color = CLR_GRAY;
	    else if (offset >= S_room && offset <= S_water)
		color = CLR_GREEN;
	    else
		color = NO_COLOR;
	} else
#endif
	    cmap_color(offset);
    } else if ((offset = (glyph - GLYPH_OBJ_OFF)) >= 0) {	/* object */
	if (offset == BOULDER && iflags.bouldersym) ch = iflags.bouldersym;
	else ch = oc_syms[(int)objects[offset].oc_class];
#ifdef ROGUE_COLOR
	if (HAS_ROGUE_IBM_GRAPHICS && iflags.use_color) {
	    switch(objects[offset].oc_class) {
		case GOLD_CLASS: color = CLR_YELLOW; break;
		case FOOD_CLASS: color = CLR_RED; break;
		default: color = CLR_BRIGHT_BLUE; break;
	    }
	} else
#endif
	    obj_color(offset);
    } else if ((offset = (glyph - GLYPH_RIDDEN_OFF)) >= 0) {	/* mon ridden */
	ch = monsyms[(int)mons[offset].mlet];
#ifdef ROGUE_COLOR
	if (HAS_ROGUE_IBM_GRAPHICS)
	    /* This currently implies that the hero is here -- monsters */
	    /* don't ride (yet...).  Should we set it to yellow like in */
	    /* the monster case below?  There is no equivalent in rogue. */
	    color = NO_COLOR;	/* no need to check iflags.use_color */
	else
#endif
	    mon_color(offset);
	    special |= MG_RIDDEN;
    } else if ((offset = (glyph - GLYPH_BODY_OFF)) >= 0) {	/* a corpse */
	ch = oc_syms[(int)objects[CORPSE].oc_class];
#ifdef ROGUE_COLOR
	if (HAS_ROGUE_IBM_GRAPHICS && iflags.use_color)
	    color = CLR_RED;
	else
#endif
	    mon_color(offset);
	    special |= MG_CORPSE;
    } else if ((offset = (glyph - GLYPH_DETECT_OFF)) >= 0) {	/* mon detect */
	ch = monsyms[(int)mons[offset].mlet];
#ifdef ROGUE_COLOR
	if (HAS_ROGUE_IBM_GRAPHICS)
	    color = NO_COLOR;	/* no need to check iflags.use_color */
	else
#endif
	    mon_color(offset);
	/* Disabled for now; anyone want to get reverse video to work? */
	/* is_reverse = TRUE; */
	    special |= MG_DETECT;
    } else if ((offset = (glyph - GLYPH_INVIS_OFF)) >= 0) {	/* invisible */
	ch = DEF_INVISIBLE;
#ifdef ROGUE_COLOR
	if (HAS_ROGUE_IBM_GRAPHICS)
	    color = NO_COLOR;	/* no need to check iflags.use_color */
	else
#endif
	    invis_color(offset);
	    special |= MG_INVIS;
    } else if ((offset = (glyph - GLYPH_PET_OFF)) >= 0) {	/* a pet */
	ch = monsyms[(int)mons[offset].mlet];
#ifdef ROGUE_COLOR
	if (HAS_ROGUE_IBM_GRAPHICS)
	    color = NO_COLOR;	/* no need to check iflags.use_color */
	else
#endif
	    pet_color(offset);
	    special |= MG_PET;
    } else {							/* a monster */
	ch = monsyms[(int)mons[glyph].mlet];
#ifdef ROGUE_COLOR
	if (HAS_ROGUE_IBM_GRAPHICS && iflags.use_color) {
	    if (x == u.ux && y == u.uy)
		/* actually player should be yellow-on-gray if in a corridor */
		color = CLR_YELLOW;
	    else
		color = NO_COLOR;
	} else
#endif
	    mon_color(glyph);
    }

#ifdef TEXTCOLOR
    /* Turn off color if no color defined, or rogue level w/o PC graphics. */
# ifdef REINCARNATION
#  ifdef ASCIIGRAPH
    if (!has_color(color) || (Is_rogue_level(&u.uz) && !HAS_ROGUE_IBM_GRAPHICS))
#  else
    if (!has_color(color) || Is_rogue_level(&u.uz))
#  endif
# else
    if (!has_color(color))
# endif
	color = NO_COLOR;
#endif
    if (ochar)
	*ochar = (int)ch;
    else
    	impossible("glyphmap(): Invalid output character buffer.");

    if (ospecial)
	*ospecial = special;
    else
    	impossible("glyphmap(): Invalid special feature return buffer.");

#ifdef TEXTCOLOR
    if (ocolor)
	*ocolor = color;
    else
    	impossible("glyphmap(): Invalid color  buffer.");
#endif
    return;
}

/*mapglyph.c*/
