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AM_MAP.C
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// AM_map.c
#include "DoomDef.h"
#include "P_local.h"
#include "AM_map.h"
#include "AM_data.h"
#include <stdio.h>
vertex_t KeyPoints[NUMKEYS];
#define NUMALIAS 3 // Number of antialiased lines.
char *LevelNames[] =
{
// EPISODE 1 - THE CITY OF THE DAMNED
"E1M1: THE DOCKS",
"E1M2: THE DUNGEONS",
"E1M3: THE GATEHOUSE",
"E1M4: THE GUARD TOWER",
"E1M5: THE CITADEL",
"E1M6: THE CATHEDRAL",
"E1M7: THE CRYPTS",
"E1M8: HELL'S MAW",
"E1M9: THE GRAVEYARD",
// EPISODE 2 - HELL'S MAW
"E2M1: THE CRATER",
"E2M2: THE LAVA PITS",
"E2M3: THE RIVER OF FIRE",
"E2M4: THE ICE GROTTO",
"E2M5: THE CATACOMBS",
"E2M6: THE LABYRINTH",
"E2M7: THE GREAT HALL",
"E2M8: THE PORTALS OF CHAOS",
"E2M9: THE GLACIER",
// EPISODE 3 - THE DOME OF D'SPARIL
"E3M1: THE STOREHOUSE",
"E3M2: THE CESSPOOL",
"E3M3: THE CONFLUENCE",
"E3M4: THE AZURE FORTRESS",
"E3M5: THE OPHIDIAN LAIR",
"E3M6: THE HALLS OF FEAR",
"E3M7: THE CHASM",
"E3M8: D'SPARIL'S KEEP",
"E3M9: THE AQUIFER",
// EPISODE 4: THE OSSUARY
"E4M1: CATAFALQUE",
"E4M2: BLOCKHOUSE",
"E4M3: AMBULATORY",
"E4M4: SEPULCHER",
"E4M5: GREAT STAIR",
"E4M6: HALLS OF THE APOSTATE",
"E4M7: RAMPARTS OF PERDITION",
"E4M8: SHATTERED BRIDGE",
"E4M9: MAUSOLEUM",
// EPISODE 5: THE STAGNANT DEMESNE
"E5M1: OCHRE CLIFFS",
"E5M2: RAPIDS",
"E5M3: QUAY",
"E5M4: COURTYARD",
"E5M5: HYDRATYR",
"E5M6: COLONNADE",
"E5M7: FOETID MANSE",
"E5M8: FIELD OF JUDGEMENT",
"E5M9: SKEIN OF D'SPARIL"
};
static int cheating = 0;
static int grid = 0;
static int leveljuststarted = 1; // kluge until AM_LevelInit() is called
boolean automapactive = false;
static int finit_width = SCREENWIDTH;
static int finit_height = SCREENHEIGHT-42;
static int f_x, f_y; // location of window on screen
static int f_w, f_h; // size of window on screen
static int lightlev; // used for funky strobing effect
static byte *fb; // pseudo-frame buffer
static int amclock;
static mpoint_t m_paninc; // how far the window pans each tic (map coords)
static fixed_t mtof_zoommul; // how far the window zooms in each tic (map coords)
static fixed_t ftom_zoommul; // how far the window zooms in each tic (fb coords)
static fixed_t m_x, m_y; // LL x,y where the window is on the map (map coords)
static fixed_t m_x2, m_y2; // UR x,y where the window is on the map (map coords)
// width/height of window on map (map coords)
static fixed_t m_w, m_h;
static fixed_t min_x, min_y; // based on level size
static fixed_t max_x, max_y; // based on level size
static fixed_t max_w, max_h; // max_x-min_x, max_y-min_y
static fixed_t min_w, min_h; // based on player size
static fixed_t min_scale_mtof; // used to tell when to stop zooming out
static fixed_t max_scale_mtof; // used to tell when to stop zooming in
// old stuff for recovery later
static fixed_t old_m_w, old_m_h;
static fixed_t old_m_x, old_m_y;
// old location used by the Follower routine
static mpoint_t f_oldloc;
// used by MTOF to scale from map-to-frame-buffer coords
static fixed_t scale_mtof = INITSCALEMTOF;
// used by FTOM to scale from frame-buffer-to-map coords (=1/scale_mtof)
static fixed_t scale_ftom;
static player_t *plr; // the player represented by an arrow
static vertex_t oldplr;
//static patch_t *marknums[10]; // numbers used for marking by the automap
//static mpoint_t markpoints[AM_NUMMARKPOINTS]; // where the points are
//static int markpointnum = 0; // next point to be assigned
static int followplayer = 1; // specifies whether to follow the player around
static char cheat_amap[] = { 'r','a','v','m','a','p' };
static byte cheatcount=0;
extern boolean viewactive;
static byte antialias[NUMALIAS][8]=
{
{96, 97, 98, 99, 100, 101, 102, 103},
{110, 109, 108, 107, 106, 105, 104, 103},
{75, 76, 77, 78, 79, 80, 81, 103}
};
/*
static byte *aliasmax[NUMALIAS] = {
&antialias[0][7], &antialias[1][7], &antialias[2][7]
};*/
static byte *maplump; // pointer to the raw data for the automap background.
static short mapystart=0; // y-value for the start of the map bitmap...used in the paralax stuff.
static short mapxstart=0; //x-value for the bitmap.
//byte screens[][SCREENWIDTH*SCREENHEIGHT];
//void V_MarkRect (int x, int y, int width, int height);
// Functions
void DrawWuLine(int X0, int Y0, int X1, int Y1, byte *BaseColor,
int NumLevels, unsigned short IntensityBits);
// Calculates the slope and slope according to the x-axis of a line
// segment in map coordinates (with the upright y-axis n' all) so
// that it can be used with the brain-dead drawing stuff.
// Ripped out for Heretic
/*
void AM_getIslope(mline_t *ml, islope_t *is)
{
int dx, dy;
dy = ml->a.y - ml->b.y;
dx = ml->b.x - ml->a.x;
if (!dy) is->islp = (dx<0?-MAXINT:MAXINT);
else is->islp = FixedDiv(dx, dy);
if (!dx) is->slp = (dy<0?-MAXINT:MAXINT);
else is->slp = FixedDiv(dy, dx);
}
*/
void AM_activateNewScale(void)
{
m_x += m_w/2;
m_y += m_h/2;
m_w = FTOM(f_w);
m_h = FTOM(f_h);
m_x -= m_w/2;
m_y -= m_h/2;
m_x2 = m_x + m_w;
m_y2 = m_y + m_h;
}
void AM_saveScaleAndLoc(void)
{
old_m_x = m_x;
old_m_y = m_y;
old_m_w = m_w;
old_m_h = m_h;
}
void AM_restoreScaleAndLoc(void)
{
m_w = old_m_w;
m_h = old_m_h;
if (!followplayer)
{
m_x = old_m_x;
m_y = old_m_y;
} else {
m_x = plr->mo->x - m_w/2;
m_y = plr->mo->y - m_h/2;
}
m_x2 = m_x + m_w;
m_y2 = m_y + m_h;
// Change the scaling multipliers
scale_mtof = FixedDiv(f_w<<FRACBITS, m_w);
scale_ftom = FixedDiv(FRACUNIT, scale_mtof);
}
// adds a marker at the current location
/*
void AM_addMark(void)
{
markpoints[markpointnum].x = m_x + m_w/2;
markpoints[markpointnum].y = m_y + m_h/2;
markpointnum = (markpointnum + 1) % AM_NUMMARKPOINTS;
}
*/
void AM_findMinMaxBoundaries(void)
{
int i;
fixed_t a, b;
min_x = min_y = MAXINT;
max_x = max_y = -MAXINT;
for (i=0;i<numvertexes;i++)
{
if (vertexes[i].x < min_x) min_x = vertexes[i].x;
else if (vertexes[i].x > max_x) max_x = vertexes[i].x;
if (vertexes[i].y < min_y) min_y = vertexes[i].y;
else if (vertexes[i].y > max_y) max_y = vertexes[i].y;
}
max_w = max_x - min_x;
max_h = max_y - min_y;
min_w = 2*PLAYERRADIUS;
min_h = 2*PLAYERRADIUS;
a = FixedDiv(f_w<<FRACBITS, max_w);
b = FixedDiv(f_h<<FRACBITS, max_h);
min_scale_mtof = a < b ? a : b;
max_scale_mtof = FixedDiv(f_h<<FRACBITS, 2*PLAYERRADIUS);
}
void AM_changeWindowLoc(void)
{
if (m_paninc.x || m_paninc.y)
{
followplayer = 0;
f_oldloc.x = MAXINT;
}
m_x += m_paninc.x;
m_y += m_paninc.y;
if (m_x + m_w/2 > max_x)
{
m_x = max_x - m_w/2;
m_paninc.x=0;
}
else if (m_x + m_w/2 < min_x)
{
m_x = min_x - m_w/2;
m_paninc.x=0;
}
if (m_y + m_h/2 > max_y)
{
m_y = max_y - m_h/2;
m_paninc.y=0;
}
else if (m_y + m_h/2 < min_y)
{
m_y = min_y - m_h/2;
m_paninc.y=0;
}
/*
mapxstart += MTOF(m_paninc.x+FRACUNIT/2);
mapystart -= MTOF(m_paninc.y+FRACUNIT/2);
if(mapxstart >= finit_width)
mapxstart -= finit_width;
if(mapxstart < 0)
mapxstart += finit_width;
if(mapystart >= finit_height)
mapystart -= finit_height;
if(mapystart < 0)
mapystart += finit_height;
*/
m_x2 = m_x + m_w;
m_y2 = m_y + m_h;
}
void AM_initVariables(void)
{
int pnum;
thinker_t *think;
mobj_t *mo;
//static event_t st_notify = { ev_keyup, AM_MSGENTERED };
automapactive = true;
fb = screen;
f_oldloc.x = MAXINT;
amclock = 0;
lightlev = 0;
m_paninc.x = m_paninc.y = 0;
ftom_zoommul = FRACUNIT;
mtof_zoommul = FRACUNIT;
m_w = FTOM(f_w);
m_h = FTOM(f_h);
// find player to center on initially
if (!playeringame[pnum = consoleplayer])
for (pnum=0;pnum<MAXPLAYERS;pnum++) if (playeringame[pnum]) break;
plr = &players[pnum];
oldplr.x = plr->mo->x;
oldplr.y = plr->mo->y;
m_x = plr->mo->x - m_w/2;
m_y = plr->mo->y - m_h/2;
AM_changeWindowLoc();
// for saving & restoring
old_m_x = m_x;
old_m_y = m_y;
old_m_w = m_w;
old_m_h = m_h;
// load in the location of keys, if in baby mode
memset(KeyPoints, 0, sizeof(vertex_t)*3);
if(gameskill == sk_baby)
{
for(think = thinkercap.next; think != &thinkercap; think = think->next)
{
if(think->function != P_MobjThinker)
{ //not a mobj
continue;
}
mo = (mobj_t *)think;
if(mo->type == MT_CKEY)
{
KeyPoints[0].x = mo->x;
KeyPoints[0].y = mo->y;
}
else if(mo->type == MT_AKYY)
{
KeyPoints[1].x = mo->x;
KeyPoints[1].y = mo->y;
}
else if(mo->type == MT_BKYY)
{
KeyPoints[2].x = mo->x;
KeyPoints[2].y = mo->y;
}
}
}
// inform the status bar of the change
//c ST_Responder(&st_notify);
}
void AM_loadPics(void)
{
//int i;
//char namebuf[9];
/* for (i=0;i<10;i++)
{
sprintf(namebuf, "AMMNUM%d", i);
marknums[i] = W_CacheLumpName(namebuf, PU_STATIC);
}*/
maplump = W_CacheLumpName("AUTOPAGE", PU_STATIC);
}
/*void AM_unloadPics(void)
{
int i;
for (i=0;i<10;i++) Z_ChangeTag(marknums[i], PU_CACHE);
}*/
/*
void AM_clearMarks(void)
{
int i;
for (i=0;i<AM_NUMMARKPOINTS;i++) markpoints[i].x = -1; // means empty
markpointnum = 0;
}
*/
// should be called at the start of every level
// right now, i figure it out myself
void AM_LevelInit(void)
{
leveljuststarted = 0;
f_x = f_y = 0;
f_w = finit_width;
f_h = finit_height;
mapxstart = mapystart = 0;
// AM_clearMarks();
AM_findMinMaxBoundaries();
scale_mtof = FixedDiv(min_scale_mtof, (int) (0.7*FRACUNIT));
if (scale_mtof > max_scale_mtof) scale_mtof = min_scale_mtof;
scale_ftom = FixedDiv(FRACUNIT, scale_mtof);
}
static boolean stopped = true;
void AM_Stop (void)
{
//static event_t st_notify = { 0, ev_keyup, AM_MSGEXITED };
// AM_unloadPics();
automapactive = false;
// ST_Responder(&st_notify);
stopped = true;
BorderNeedRefresh = true;
}
void AM_Start (void)
{
static int lastlevel = -1, lastepisode = -1;
if (!stopped) AM_Stop();
stopped = false;
if(gamestate != GS_LEVEL)
{
return; // don't show automap if we aren't in a game!
}
if (lastlevel != gamemap || lastepisode != gameepisode)
{
AM_LevelInit();
lastlevel = gamemap;
lastepisode = gameepisode;
}
AM_initVariables();
AM_loadPics();
}
// set the window scale to the maximum size
void AM_minOutWindowScale(void)
{
scale_mtof = min_scale_mtof;
scale_ftom = FixedDiv(FRACUNIT, scale_mtof);
AM_activateNewScale();
}
// set the window scale to the minimum size
void AM_maxOutWindowScale(void)
{
scale_mtof = max_scale_mtof;
scale_ftom = FixedDiv(FRACUNIT, scale_mtof);
AM_activateNewScale();
}
boolean AM_Responder (event_t *ev)
{
int rc;
static int cheatstate=0;
static int bigstate=0;
rc = false;
if (!automapactive)
{
if (ev->type == ev_keydown && ev->data1 == AM_STARTKEY
&& gamestate == GS_LEVEL)
{
AM_Start ();
viewactive = false;
// viewactive = true;
rc = true;
}
}
else if (ev->type == ev_keydown)
{
rc = true;
switch(ev->data1)
{
case AM_PANRIGHTKEY: // pan right
if (!followplayer) m_paninc.x = FTOM(F_PANINC);
else rc = false;
break;
case AM_PANLEFTKEY: // pan left
if (!followplayer) m_paninc.x = -FTOM(F_PANINC);
else rc = false;
break;
case AM_PANUPKEY: // pan up
if (!followplayer) m_paninc.y = FTOM(F_PANINC);
else rc = false;
break;
case AM_PANDOWNKEY: // pan down
if (!followplayer) m_paninc.y = -FTOM(F_PANINC);
else rc = false;
break;
case AM_ZOOMOUTKEY: // zoom out
mtof_zoommul = M_ZOOMOUT;
ftom_zoommul = M_ZOOMIN;
break;
case AM_ZOOMINKEY: // zoom in
mtof_zoommul = M_ZOOMIN;
ftom_zoommul = M_ZOOMOUT;
break;
case AM_ENDKEY:
bigstate = 0;
viewactive = true;
AM_Stop ();
break;
case AM_GOBIGKEY:
bigstate = !bigstate;
if (bigstate)
{
AM_saveScaleAndLoc();
AM_minOutWindowScale();
}
else AM_restoreScaleAndLoc();
break;
case AM_FOLLOWKEY:
followplayer = !followplayer;
f_oldloc.x = MAXINT;
P_SetMessage(plr, followplayer ? AMSTR_FOLLOWON : AMSTR_FOLLOWOFF, true);
break;
/*
case AM_GRIDKEY:
grid = !grid;
plr->message = grid ? AMSTR_GRIDON : AMSTR_GRIDOFF;
break;
case AM_MARKKEY:
sprintf(buffer, "%s %d", AMSTR_MARKEDSPOT, markpointnum);
plr->message = buffer;
AM_addMark();
break;
case AM_CLEARMARKKEY:
AM_clearMarks();
plr->message = AMSTR_MARKSCLEARED;
break;
*/
default:
cheatstate=0;
rc = false;
}
if(cheat_amap[cheatcount]==ev->data1 && !netgame)
cheatcount++;
else
cheatcount=0;
if(cheatcount==6)
{
cheatcount=0;
rc = false;
cheating = (cheating+1) % 3;
}
}
else if (ev->type == ev_keyup)
{
rc = false;
switch (ev->data1)
{
case AM_PANRIGHTKEY:
if (!followplayer) m_paninc.x = 0;
break;
case AM_PANLEFTKEY:
if (!followplayer) m_paninc.x = 0;
break;
case AM_PANUPKEY:
if (!followplayer) m_paninc.y = 0;
break;
case AM_PANDOWNKEY:
if (!followplayer) m_paninc.y = 0;
break;
case AM_ZOOMOUTKEY:
case AM_ZOOMINKEY:
mtof_zoommul = FRACUNIT;
ftom_zoommul = FRACUNIT;
break;
}
}
return rc;
}
void AM_changeWindowScale(void)
{
// Change the scaling multipliers
scale_mtof = FixedMul(scale_mtof, mtof_zoommul);
scale_ftom = FixedDiv(FRACUNIT, scale_mtof);
if (scale_mtof < min_scale_mtof) AM_minOutWindowScale();
else if (scale_mtof > max_scale_mtof) AM_maxOutWindowScale();
else AM_activateNewScale();
}
void AM_doFollowPlayer(void)
{
if (f_oldloc.x != plr->mo->x || f_oldloc.y != plr->mo->y)
{
// m_x = FTOM(MTOF(plr->mo->x - m_w/2));
// m_y = FTOM(MTOF(plr->mo->y - m_h/2));
// m_x = plr->mo->x - m_w/2;
// m_y = plr->mo->y - m_h/2;
m_x = FTOM(MTOF(plr->mo->x)) - m_w/2;
m_y = FTOM(MTOF(plr->mo->y)) - m_h/2;
m_x2 = m_x + m_w;
m_y2 = m_y + m_h;
// do the parallax parchment scrolling.
/*
dmapx = (MTOF(plr->mo->x)-MTOF(f_oldloc.x)); //fixed point
dmapy = (MTOF(f_oldloc.y)-MTOF(plr->mo->y));
if(f_oldloc.x == MAXINT) //to eliminate an error when the user first
dmapx=0; //goes into the automap.
mapxstart += dmapx;
mapystart += dmapy;
while(mapxstart >= finit_width)
mapxstart -= finit_width;
while(mapxstart < 0)
mapxstart += finit_width;
while(mapystart >= finit_height)
mapystart -= finit_height;
while(mapystart < 0)
mapystart += finit_height;
*/
f_oldloc.x = plr->mo->x;
f_oldloc.y = plr->mo->y;
}
}
// Ripped out for Heretic
/*
void AM_updateLightLev(void)
{
static nexttic = 0;
//static int litelevels[] = { 0, 3, 5, 6, 6, 7, 7, 7 };
static int litelevels[] = { 0, 4, 7, 10, 12, 14, 15, 15 };
static int litelevelscnt = 0;
// Change light level
if (amclock>nexttic)
{
lightlev = litelevels[litelevelscnt++];
if (litelevelscnt == sizeof(litelevels)/sizeof(int)) litelevelscnt = 0;
nexttic = amclock + 6 - (amclock % 6);
}
}
*/
void AM_Ticker (void)
{
if (!automapactive) return;
amclock++;
if (followplayer) AM_doFollowPlayer();
// Change the zoom if necessary
if (ftom_zoommul != FRACUNIT) AM_changeWindowScale();
// Change x,y location
if (m_paninc.x || m_paninc.y) AM_changeWindowLoc();
// Update light level
// AM_updateLightLev();
}
void AM_clearFB(int color)
{
int i, j;
int dmapx;
int dmapy;
if(followplayer)
{
dmapx = (MTOF(plr->mo->x)-MTOF(oldplr.x)); //fixed point
dmapy = (MTOF(oldplr.y)-MTOF(plr->mo->y));
oldplr.x = plr->mo->x;
oldplr.y = plr->mo->y;
// if(f_oldloc.x == MAXINT) //to eliminate an error when the user first
// dmapx=0; //goes into the automap.
mapxstart += dmapx>>1;
mapystart += dmapy>>1;
while(mapxstart >= finit_width)
mapxstart -= finit_width;
while(mapxstart < 0)
mapxstart += finit_width;
while(mapystart >= finit_height)
mapystart -= finit_height;
while(mapystart < 0)
mapystart += finit_height;
}
else
{
mapxstart += (MTOF(m_paninc.x)>>1);
mapystart -= (MTOF(m_paninc.y)>>1);
if(mapxstart >= finit_width)
mapxstart -= finit_width;
if(mapxstart < 0)
mapxstart += finit_width;
if(mapystart >= finit_height)
mapystart -= finit_height;
if(mapystart < 0)
mapystart += finit_height;
}
//blit the automap background to the screen.
j=mapystart*finit_width;
for(i=0;i<finit_height;i++)
{
memcpy(screen+i*finit_width, maplump+j+mapxstart, finit_width-mapxstart);
memcpy(screen+i*finit_width+finit_width-mapxstart, maplump+j, mapxstart);
j += finit_width;
if(j >= finit_height*finit_width)
j=0;
}
// memcpy(screen, maplump, finit_width*finit_height);
// memset(fb, color, f_w*f_h);
}
// Based on Cohen-Sutherland clipping algorithm but with a slightly
// faster reject and precalculated slopes. If I need the speed, will
// hash algorithm to the common cases.
boolean AM_clipMline(mline_t *ml, fline_t *fl)
{
enum { LEFT=1, RIGHT=2, BOTTOM=4, TOP=8 };
register outcode1 = 0, outcode2 = 0, outside;
fpoint_t tmp;
int dx, dy;
#define DOOUTCODE(oc, mx, my) \
(oc) = 0; \
if ((my) < 0) (oc) |= TOP; \
else if ((my) >= f_h) (oc) |= BOTTOM; \
if ((mx) < 0) (oc) |= LEFT; \
else if ((mx) >= f_w) (oc) |= RIGHT
// do trivial rejects and outcodes
if (ml->a.y > m_y2) outcode1 = TOP;
else if (ml->a.y < m_y) outcode1 = BOTTOM;
if (ml->b.y > m_y2) outcode2 = TOP;
else if (ml->b.y < m_y) outcode2 = BOTTOM;
if (outcode1 & outcode2) return false; // trivially outside
if (ml->a.x < m_x) outcode1 |= LEFT;
else if (ml->a.x > m_x2) outcode1 |= RIGHT;
if (ml->b.x < m_x) outcode2 |= LEFT;
else if (ml->b.x > m_x2) outcode2 |= RIGHT;
if (outcode1 & outcode2) return false; // trivially outside
// transform to frame-buffer coordinates.
fl->a.x = CXMTOF(ml->a.x);
fl->a.y = CYMTOF(ml->a.y);
fl->b.x = CXMTOF(ml->b.x);
fl->b.y = CYMTOF(ml->b.y);
DOOUTCODE(outcode1, fl->a.x, fl->a.y);
DOOUTCODE(outcode2, fl->b.x, fl->b.y);
if (outcode1 & outcode2) return false;
while (outcode1 | outcode2)
{
// may be partially inside box
// find an outside point
if (outcode1) outside = outcode1;
else outside = outcode2;
// clip to each side
if (outside & TOP)
{
dy = fl->a.y - fl->b.y;
dx = fl->b.x - fl->a.x;
tmp.x = fl->a.x + (dx*(fl->a.y))/dy;
tmp.y = 0;
}
else if (outside & BOTTOM)
{
dy = fl->a.y - fl->b.y;
dx = fl->b.x - fl->a.x;
tmp.x = fl->a.x + (dx*(fl->a.y-f_h))/dy;
tmp.y = f_h-1;
}
else if (outside & RIGHT)
{
dy = fl->b.y - fl->a.y;
dx = fl->b.x - fl->a.x;
tmp.y = fl->a.y + (dy*(f_w-1 - fl->a.x))/dx;
tmp.x = f_w-1;
}
else if (outside & LEFT)
{
dy = fl->b.y - fl->a.y;
dx = fl->b.x - fl->a.x;
tmp.y = fl->a.y + (dy*(-fl->a.x))/dx;
tmp.x = 0;
}
if (outside == outcode1)
{
fl->a = tmp;
DOOUTCODE(outcode1, fl->a.x, fl->a.y);
} else {
fl->b = tmp;
DOOUTCODE(outcode2, fl->b.x, fl->b.y);
}
if (outcode1 & outcode2) return false; // trivially outside
}
return true;
}
#undef DOOUTCODE
// Classic Bresenham w/ whatever optimizations I need for speed
void AM_drawFline(fline_t *fl, int color)
{
register int x, y, dx, dy, sx, sy, ax, ay, d;
static fuck = 0;
switch(color)
{
case WALLCOLORS:
DrawWuLine(fl->a.x, fl->a.y, fl->b.x, fl->b.y, &antialias[0][0], 8, 3);
break;
case FDWALLCOLORS:
DrawWuLine(fl->a.x, fl->a.y, fl->b.x, fl->b.y, &antialias[1][0], 8, 3);
break;
case CDWALLCOLORS:
DrawWuLine(fl->a.x, fl->a.y, fl->b.x, fl->b.y, &antialias[2][0], 8, 3);
break;
default:
{
// For debugging only
if ( fl->a.x < 0 || fl->a.x >= f_w
|| fl->a.y < 0 || fl->a.y >= f_h
|| fl->b.x < 0 || fl->b.x >= f_w
|| fl->b.y < 0 || fl->b.y >= f_h)
{
fprintf(stderr, "fuck %d \r", fuck++);
return;
}
#define DOT(xx,yy,cc) fb[(yy)*f_w+(xx)]=(cc) //the MACRO!
dx = fl->b.x - fl->a.x;
ax = 2 * (dx<0 ? -dx : dx);
sx = dx<0 ? -1 : 1;
dy = fl->b.y - fl->a.y;
ay = 2 * (dy<0 ? -dy : dy);
sy = dy<0 ? -1 : 1;
x = fl->a.x;
y = fl->a.y;
if (ax > ay)
{
d = ay - ax/2;
while (1)
{
DOT(x,y,color);
if (x == fl->b.x) return;
if (d>=0)
{
y += sy;
d -= ax;
}
x += sx;
d += ay;
}
} else {
d = ax - ay/2;
while (1)
{
DOT(x, y, color);
if (y == fl->b.y) return;
if (d >= 0)
{
x += sx;
d -= ay;
}
y += sy;
d += ax;
}
}
}
}
}
/* Wu antialiased line drawer.
* (X0,Y0),(X1,Y1) = line to draw
* BaseColor = color # of first color in block used for antialiasing, the
* 100% intensity version of the drawing color
* NumLevels = size of color block, with BaseColor+NumLevels-1 being the
* 0% intensity version of the drawing color
* IntensityBits = log base 2 of NumLevels; the # of bits used to describe
* the intensity of the drawing color. 2**IntensityBits==NumLevels
*/
void PUTDOT(short xx,short yy,byte *cc, byte *cm)
{
static int oldyy;
static int oldyyshifted;
byte *oldcc=cc;
if(xx < 32)
cc += 7-(xx>>2);
else if(xx > (finit_width - 32))
cc += 7-((finit_width-xx) >> 2);
// if(cc==oldcc) //make sure that we don't double fade the corners.
// {
if(yy < 32)
cc += 7-(yy>>2);
else if(yy > (finit_height - 32))
cc += 7-((finit_height-yy) >> 2);
// }
if(cc > cm && cm != NULL)
{
cc = cm;
}
else if(cc > oldcc+6) // don't let the color escape from the fade table...
{
cc=oldcc+6;
}
if(yy == oldyy+1)
{
oldyy++;
oldyyshifted += 320;
}
else if(yy == oldyy-1)
{
oldyy--;
oldyyshifted -= 320;
}
else if(yy != oldyy)
{
oldyy = yy;
oldyyshifted = yy*320;
}
fb[oldyyshifted+xx] = *(cc);
// fb[(yy)*f_w+(xx)]=*(cc);
}
void DrawWuLine(int X0, int Y0, int X1, int Y1, byte *BaseColor,
int NumLevels, unsigned short IntensityBits)
{
unsigned short IntensityShift, ErrorAdj, ErrorAcc;
unsigned short ErrorAccTemp, Weighting, WeightingComplementMask;
short DeltaX, DeltaY, Temp, XDir;
/* Make sure the line runs top to bottom */
if (Y0 > Y1) {
Temp = Y0; Y0 = Y1; Y1 = Temp;
Temp = X0; X0 = X1; X1 = Temp;
}
/* Draw the initial pixel, which is always exactly intersected by
the line and so needs no weighting */
PUTDOT(X0, Y0, &BaseColor[0], NULL);
if ((DeltaX = X1 - X0) >= 0) {
XDir = 1;
} else {
XDir = -1;
DeltaX = -DeltaX; /* make DeltaX positive */
}
/* Special-case horizontal, vertical, and diagonal lines, which
require no weighting because they go right through the center of
every pixel */
if ((DeltaY = Y1 - Y0) == 0) {
/* Horizontal line */
while (DeltaX-- != 0) {
X0 += XDir;
PUTDOT(X0, Y0, &BaseColor[0], NULL);
}
return;
}
if (DeltaX == 0) {
/* Vertical line */
do {
Y0++;
PUTDOT(X0, Y0, &BaseColor[0], NULL);
} while (--DeltaY != 0);
return;
}
//diagonal line.
if (DeltaX == DeltaY) {
do {
X0 += XDir;