initial import of 386bsd-0.1 sources

1 files changed, 434 insertions, 0 deletions

diff --git a/larn/display.c b/larn/display.c
new file mode 100644
index 00000000..b49de50c
--- /dev/null
+++ b/larn/display.c
@@ -0,0 +1,434 @@
+/*	display.c		Larn is copyrighted 1986 by Noah Morgan. */
+#include "header.h"
+#define makecode(_a,_b,_c) (((_a)<<16) + ((_b)<<8) + (_c))
+
+static int minx,maxx,miny,maxy,k,m;
+static char bot1f=0,bot2f=0,bot3f=0;
+char always=0;
+/*
+	bottomline()
+
+	now for the bottom line of the display
+ */
+bottomline()
+	{	recalc();	bot1f=1;	}
+bottomhp()
+	{	bot2f=1;	}
+bottomspell()
+	{	bot3f=1;	}
+bottomdo()
+	{
+	if (bot1f) { bot3f=bot1f=bot2f=0; bot_linex(); return; }
+	if (bot2f) { bot2f=0; bot_hpx(); }
+	if (bot3f) { bot3f=0; bot_spellx(); }
+	}
+
+static void botsub();
+
+bot_linex()
+	{
+	register int i;
+	if (cbak[SPELLS] <= -50 || (always))
+		{
+		cursor( 1,18);
+		if (c[SPELLMAX]>99)  lprintf("Spells:%3d(%3d)",(long)c[SPELLS],(long)c[SPELLMAX]);
+						else lprintf("Spells:%3d(%2d) ",(long)c[SPELLS],(long)c[SPELLMAX]);
+		lprintf(" AC: %-3d  WC: %-3d  Level",(long)c[AC],(long)c[WCLASS]);
+		if (c[LEVEL]>99) lprintf("%3d",(long)c[LEVEL]);
+					else lprintf(" %-2d",(long)c[LEVEL]);
+		lprintf(" Exp: %-9d %s\n",(long)c[EXPERIENCE],class[c[LEVEL]-1]);
+		lprintf("HP: %3d(%3d) STR=%-2d INT=%-2d ",
+			(long)c[HP],(long)c[HPMAX],(long)(c[STRENGTH]+c[STREXTRA]),(long)c[INTELLIGENCE]);
+		lprintf("WIS=%-2d CON=%-2d DEX=%-2d CHA=%-2d LV:",
+			(long)c[WISDOM],(long)c[CONSTITUTION],(long)c[DEXTERITY],(long)c[CHARISMA]);
+
+		if ((level==0) || (wizard))  c[TELEFLAG]=0;
+		if (c[TELEFLAG])  lprcat(" ?");  else  lprcat(levelname[level]);
+		lprintf("  Gold: %-6d",(long)c[GOLD]);
+		always=1;  botside();
+		c[TMP] = c[STRENGTH]+c[STREXTRA];
+		for (i=0; i<100; i++) cbak[i]=c[i];
+		return;
+		}
+
+	botsub(makecode(SPELLS,8,18),"%3d");
+	if (c[SPELLMAX]>99)  botsub(makecode(SPELLMAX,12,18),"%3d)");
+					else botsub(makecode(SPELLMAX,12,18),"%2d) ");
+	botsub(makecode(HP,5,19),"%3d");
+	botsub(makecode(HPMAX,9,19),"%3d");
+	botsub(makecode(AC,21,18),"%-3d");
+	botsub(makecode(WCLASS,30,18),"%-3d");
+	botsub(makecode(EXPERIENCE,49,18),"%-9d");
+	if (c[LEVEL] != cbak[LEVEL])
+		{ cursor(59,18);	lprcat(class[c[LEVEL]-1]);  }
+	if (c[LEVEL]>99) botsub(makecode(LEVEL,40,18),"%3d");
+				else botsub(makecode(LEVEL,40,18)," %-2d");
+	c[TMP] = c[STRENGTH]+c[STREXTRA];	botsub(makecode(TMP,18,19),"%-2d");
+	botsub(makecode(INTELLIGENCE,25,19),"%-2d");
+	botsub(makecode(WISDOM,32,19),"%-2d");
+	botsub(makecode(CONSTITUTION,39,19),"%-2d");
+	botsub(makecode(DEXTERITY,46,19),"%-2d");
+	botsub(makecode(CHARISMA,53,19),"%-2d");
+	if ((level != cbak[CAVELEVEL]) || (c[TELEFLAG] != cbak[TELEFLAG]))
+		{
+		if ((level==0) || (wizard))  c[TELEFLAG]=0;
+		cbak[TELEFLAG] = c[TELEFLAG];
+		cbak[CAVELEVEL] = level;	cursor(59,19);
+		if (c[TELEFLAG])  lprcat(" ?");  else  lprcat(levelname[level]);
+		}
+	botsub(makecode(GOLD,69,19),"%-6d");
+	botside();
+	}
+
+/*
+	special subroutine to update only the gold number on the bottomlines
+	called from ogold()
+ */
+bottomgold()
+	{
+	botsub(makecode(GOLD,69,19),"%-6d");
+/*	botsub(GOLD,"%-6d",69,19); */
+	}
+
+/*
+	special routine to update hp and level fields on bottom lines
+	called in monster.c hitplayer() and spattack()
+ */
+bot_hpx()
+	{
+	if (c[EXPERIENCE] != cbak[EXPERIENCE])
+		{
+		recalc();	 bot_linex();
+		}
+	else botsub(makecode(HP,5,19),"%3d");	
+	}
+
+/*
+	special routine to update number of spells called from regen()
+ */
+bot_spellx()
+	{
+	botsub(makecode(SPELLS,9,18),"%2d");
+	}
+
+/*
+	common subroutine for a more economical bottomline()
+ */
+static struct bot_side_def
+	{
+	int typ;
+	char *string;
+	}
+	bot_data[] =
+	{
+	STEALTH,"stealth",		UNDEADPRO,"undead pro",		SPIRITPRO,"spirit pro",
+	CHARMCOUNT,"Charm",		TIMESTOP,"Time Stop",		HOLDMONST,"Hold Monst",
+	GIANTSTR,"Giant Str",	FIRERESISTANCE,"Fire Resit", DEXCOUNT,"Dexterity",
+	STRCOUNT,"Strength",	SCAREMONST,"Scare",			HASTESELF,"Haste Self",
+	CANCELLATION,"Cancel",	INVISIBILITY,"Invisible",	ALTPRO,"Protect 3",
+	PROTECTIONTIME,"Protect 2", WTW,"Wall-Walk"
+	};
+
+botside()
+	{
+	register int i,idx;
+	for (i=0; i<17; i++)
+		{
+		idx = bot_data[i].typ;
+		if ((always) || (c[idx] != cbak[idx]))
+		   {
+		   if ((always) || (cbak[idx] == 0))
+				{ if (c[idx]) { cursor(70,i+1); lprcat(bot_data[i].string); } }  else
+		   if (c[idx]==0)     { cursor(70,i+1); lprcat("          "); }
+		   cbak[idx]=c[idx];
+		   }
+		}
+	always=0;
+	}
+
+static void
+botsub(idx,str)
+	register int idx;
+	char *str;
+	{
+	register int x,y;
+	y = idx & 0xff;		x = (idx>>8) & 0xff;	  idx >>= 16;
+	if (c[idx] != cbak[idx])
+		{ cbak[idx]=c[idx];  cursor(x,y);  lprintf(str,(long)c[idx]); }
+	}
+
+/*
+ *	subroutine to draw only a section of the screen
+ *	only the top section of the screen is updated.  If entire lines are being
+ *	drawn, then they will be cleared first.
+ */
+int d_xmin=0,d_xmax=MAXX,d_ymin=0,d_ymax=MAXY;	/* for limited screen drawing */
+draws(xmin,xmax,ymin,ymax)
+	int xmin,xmax,ymin,ymax;
+	{
+	register int i,idx;
+	if (xmin==0 && xmax==MAXX) /* clear section of screen as needed */
+		{
+		if (ymin==0) cl_up(79,ymax);
+		else for (i=ymin; i<ymin; i++)  cl_line(1,i+1);
+		xmin = -1;
+		}
+	d_xmin=xmin;	d_xmax=xmax;	d_ymin=ymin;	d_ymax=ymax;	/* for limited screen drawing */
+	drawscreen();
+	if (xmin<=0 && xmax==MAXX) /* draw stuff on right side of screen as needed*/
+		{
+		for (i=ymin; i<ymax; i++)
+			{
+			idx = bot_data[i].typ;
+			if (c[idx])
+				{
+				cursor(70,i+1); lprcat(bot_data[i].string);
+				}
+			cbak[idx]=c[idx];
+			}
+		}
+	}
+
+/*
+	drawscreen()
+
+	subroutine to redraw the whole screen as the player knows it
+ */
+char screen[MAXX][MAXY],d_flag;	/* template for the screen */
+drawscreen()
+	{
+	register int i,j,k;
+	int lastx,lasty;  /* variables used to optimize the object printing */
+	if (d_xmin==0 && d_xmax==MAXX && d_ymin==0 && d_ymax==MAXY)
+		{
+		d_flag=1;  clear(); /* clear the screen */
+		}
+	else 
+		{
+		d_flag=0;  cursor(1,1);
+		}
+	if (d_xmin<0)
+		d_xmin=0; /* d_xmin=-1 means display all without bottomline */
+
+	for (i=d_ymin; i<d_ymax; i++)
+	  for (j=d_xmin; j<d_xmax; j++)
+		if (know[j][i]==0)  screen[j][i] = ' ';  else
+		if (k=mitem[j][i])  screen[j][i] = monstnamelist[k];  else
+		if ((k=item[j][i])==OWALL) screen[j][i] = '#';
+		else screen[j][i] = ' ';
+
+	for (i=d_ymin; i<d_ymax; i++)
+		{
+		j=d_xmin;  while ((screen[j][i]==' ') && (j<d_xmax)) j++;
+		/* was m=0 */
+		if (j >= d_xmax)  m=d_xmin; /* don't search backwards if blank line */
+		else
+			{	/* search backwards for end of line */
+			m=d_xmax-1;  while ((screen[m][i]==' ') && (m>d_xmin)) --m;
+			if (j<=m)  cursor(j+1,i+1);  else continue;
+			}
+		while (j <= m)
+			{
+			if (j <= m-3) 
+				{
+				for (k=j; k<=j+3; k++) if (screen[k][i] != ' ') k=1000;
+				if (k < 1000)
+					{ while(screen[j][i]==' ' && j<=m) j++;  cursor(j+1,i+1); }
+				}
+			lprc(screen[j++][i]);
+			}
+		}
+	setbold();		/* print out only bold objects now */
+
+	for (lastx=lasty=127, i=d_ymin; i<d_ymax; i++)
+		for (j=d_xmin; j<d_xmax; j++)
+			{
+			if (k=item[j][i])
+				if (k != OWALL)
+					if ((know[j][i]) && (mitem[j][i]==0))
+						if (objnamelist[k]!=' ')
+							{
+							if (lasty!=i+1 || lastx!=j)
+								cursor(lastx=j+1,lasty=i+1); else lastx++;
+							lprc(objnamelist[k]);
+							}
+			}
+
+	resetbold();  if (d_flag)  { always=1; botside(); always=1; bot_linex(); }
+	oldx=99;
+	d_xmin = 0 , d_xmax = MAXX , d_ymin = 0 , d_ymax = MAXY; /* for limited screen drawing */
+	}
+
+/*
+	showcell(x,y)
+
+	subroutine to display a cell location on the screen
+ */
+showcell(x,y)
+	int x,y;
+	{
+	register int i,j,k,m;
+	if (c[BLINDCOUNT])  return;	/* see nothing if blind		*/
+	if (c[AWARENESS]) { minx = x-3;	maxx = x+3;	miny = y-3;	maxy = y+3; }
+			else	  { minx = x-1;	maxx = x+1;	miny = y-1;	maxy = y+1; }
+
+	if (minx < 0) minx=0;		if (maxx > MAXX-1) maxx = MAXX-1;
+	if (miny < 0) miny=0;		if (maxy > MAXY-1) maxy = MAXY-1;
+
+	for (j=miny; j<=maxy; j++)
+	  for (m=minx; m<=maxx; m++)
+		if (know[m][j]==0)
+			{
+			cursor(m+1,j+1);
+			x=maxx;  while (know[x][j]) --x;
+			for (i=m; i<=x; i++)
+				{
+				if ((k=mitem[i][j]) != 0)  lprc(monstnamelist[k]);
+				else switch(k=item[i][j])
+					{
+					case OWALL:  case 0: case OIVTELETRAP:  case OTRAPARROWIV:
+					case OIVDARTRAP: case OIVTRAPDOOR:	
+						lprc(objnamelist[k]);	break;
+
+					default: setbold(); lprc(objnamelist[k]); resetbold();
+					};
+				know[i][j]=1;
+				}
+			m = maxx;
+			}
+	}
+
+/*
+	this routine shows only the spot that is given it.  the spaces around
+	these coordinated are not shown
+	used in godirect() in monster.c for missile weapons display
+ */
+show1cell(x,y)
+	int x,y;
+	{
+	if (c[BLINDCOUNT])  return;	/* see nothing if blind		*/
+	cursor(x+1,y+1);
+	if ((k=mitem[x][y]) != 0)  lprc(monstnamelist[k]);
+		else switch(k=item[x][y])
+			{
+			case OWALL:  case 0:  case OIVTELETRAP:  case OTRAPARROWIV: 
+			case OIVDARTRAP: case OIVTRAPDOOR:	
+				lprc(objnamelist[k]);	break;
+
+			default: setbold(); lprc(objnamelist[k]); resetbold();
+			};
+	know[x][y]|=1;	/* we end up knowing about it */
+	}
+
+/*
+	showplayer()
+
+	subroutine to show where the player is on the screen
+	cursor values start from 1 up
+ */
+showplayer()
+	{
+	cursor(playerx+1,playery+1);
+	oldx=playerx;  oldy=playery;
+	}
+
+/*
+	moveplayer(dir)
+
+	subroutine to move the player from one room to another
+	returns 0 if can't move in that direction or hit a monster or on an object
+	else returns 1
+	nomove is set to 1 to stop the next move (inadvertent monsters hitting
+	players when walking into walls) if player walks off screen or into wall
+ */
+short diroffx[] = { 0,  0, 1,  0, -1,  1, -1, 1, -1 };
+short diroffy[] = { 0,  1, 0, -1,  0, -1, -1, 1,  1 };
+moveplayer(dir)
+	int dir;			/*	from = present room #  direction = [1-north]
+							[2-east] [3-south] [4-west] [5-northeast]
+							[6-northwest] [7-southeast] [8-southwest]
+						if direction=0, don't move--just show where he is */
+	{
+	register int k,m,i,j;
+	if (c[CONFUSE]) if (c[LEVEL]<rnd(30)) dir=rund(9); /*if confused any dir*/
+	k = playerx + diroffx[dir];		m = playery + diroffy[dir];
+	if (k<0 || k>=MAXX || m<0 || m>=MAXY) { nomove=1; return(yrepcount = 0); }
+	i = item[k][m];			j = mitem[k][m];
+	if (i==OWALL && c[WTW]==0) { nomove=1;  return(yrepcount = 0); }		/*	hit a wall	*/
+	if (k==33 && m==MAXY-1 && level==1)
+		{
+		newcavelevel(0); for (k=0; k<MAXX; k++) for (m=0; m<MAXY; m++)
+		if (item[k][m]==OENTRANCE)
+		  { playerx=k; playery=m; positionplayer();  drawscreen(); return(0); }
+		}
+	if (j>0)     { hitmonster(k,m);	return(yrepcount = 0); } /* hit a monster*/
+	lastpx = playerx;			lastpy = playery;
+	playerx = k;		playery = m;
+	if (i && i!=OTRAPARROWIV && i!=OIVTELETRAP && i!=OIVDARTRAP && i!=OIVTRAPDOOR) return(yrepcount = 0);  else return(1);
+	}
+
+/*
+ *	function to show what magic items have been discovered thus far
+ *	enter with -1 for just spells, anything else will give scrolls & potions
+ */
+static int lincount,count;
+seemagic(arg)
+	int arg;
+	{
+	register int i,number;
+	count = lincount = 0;  nosignal=1;
+
+	if (arg== -1) /* if display spells while casting one */
+		{
+		for (number=i=0; i<SPNUM; i++) if (spelknow[i]) number++;
+		number = (number+2)/3 + 4;	/* # lines needed to display */
+		cl_up(79,number);  cursor(1,1);
+		}
+	else
+		{
+		resetscroll();  clear();
+		}
+
+	lprcat("The magic spells you have discovered thus far:\n\n");
+	for (i=0; i<SPNUM; i++)
+		if (spelknow[i])
+			{ lprintf("%s %-20s ",spelcode[i],spelname[i]);  seepage(); }
+
+	if (arg== -1)
+		{
+		seepage();  more();	 nosignal=0;
+		draws(0,MAXX,0,number);  return;
+		}
+
+	lincount += 3;  if (count!=0) { count=2;  seepage(); }
+
+	lprcat("\nThe magic scrolls you have found to date are:\n\n");
+	count=0;
+	for (i=0; i<MAXSCROLL; i++)
+		if (scrollname[i][0])
+		  if (scrollname[i][1]!=' ')
+			{ lprintf("%-26s",&scrollname[i][1]);  seepage(); }
+
+	lincount += 3;  if (count!=0) { count=2;  seepage(); }
+
+	lprcat("\nThe magic potions you have found to date are:\n\n");
+	count=0;
+	for (i=0; i<MAXPOTION; i++)
+		if (potionname[i][0])
+		  if (potionname[i][1]!=' ')
+			{ lprintf("%-26s",&potionname[i][1]);  seepage(); }
+
+	if (lincount!=0) more();	nosignal=0;  setscroll();	drawscreen();
+	}
+
+/*
+ *	subroutine to paginate the seemagic function
+ */
+seepage()
+	{
+	if (++count==3)
+		{
+		lincount++;	count=0;	lprc('\n');
+		if (lincount>17) {	lincount=0;  more();  clear();	}
+		}
+	}