ref: ab56f8d2ce035f9b6f165f6d63dc031f069d6b45
dir: /src/doom/am_map.c/
//
// Copyright(C) 1993-1996 Id Software, Inc.
// Copyright(C) 2005-2014 Simon Howard
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
//
// DESCRIPTION: the automap code
//
#include <stdio.h>
#include "deh_main.h"
#include "z_zone.h"
#include "doomkeys.h"
#include "doomdef.h"
#include "st_stuff.h"
#include "p_local.h"
#include "w_wad.h"
#include "m_cheat.h"
#include "m_controls.h"
#include "m_misc.h"
#include "i_system.h"
#include "i_timer.h"
#include "i_video.h"
// Needs access to LFB.
#include "v_video.h"
// State.
#include "doomstat.h"
#include "r_state.h"
// Data.
#include "dstrings.h"
#include "am_map.h"
// For use if I do walls with outsides/insides
#define REDS (256-5*16)
#define REDRANGE 16
#define BLUES (256-4*16+8)
#define BLUERANGE 8
#define GREENS (7*16)
#define GREENRANGE 16
#define GRAYS (6*16)
#define GRAYSRANGE 16
#define BROWNS (4*16)
#define BROWNRANGE 16
#define YELLOWS (256-32+7)
#define YELLOWRANGE 1
#define BLACK 0
#define WHITE (256-47)
// Automap colors
#define BACKGROUND BLACK
#define YOURCOLORS WHITE
#define YOURRANGE 0
#define WALLCOLORS REDS
#define WALLRANGE REDRANGE
#define TSWALLCOLORS GRAYS
#define TSWALLRANGE GRAYSRANGE
#define FDWALLCOLORS BROWNS
#define FDWALLRANGE BROWNRANGE
#define CDWALLCOLORS YELLOWS
#define CDWALLRANGE YELLOWRANGE
#define THINGCOLORS GREENS
#define THINGRANGE GREENRANGE
#define SECRETWALLCOLORS WALLCOLORS
#define SECRETWALLRANGE WALLRANGE
#define GRIDCOLORS (GRAYS + GRAYSRANGE/2)
#define GRIDRANGE 0
#define XHAIRCOLORS GRAYS
// drawing stuff
#define AM_NUMMARKPOINTS 10
// scale on entry
#define INITSCALEMTOF (.2*FRACUNIT)
// how much the automap moves window per tic in frame-buffer coordinates
// moves 140 pixels in 1 second
#define F_PANINC 4
// how much zoom-in per tic
// goes to 2x in 1 second
#define M_ZOOMIN ((int) (1.02*FRACUNIT))
// how much zoom-out per tic
// pulls out to 0.5x in 1 second
#define M_ZOOMOUT ((int) (FRACUNIT/1.02))
// translates between frame-buffer and map distances
#define FTOM(x) FixedMul(((x)<<FRACBITS),scale_ftom)
#define MTOF(x) (FixedMul((x),scale_mtof)>>FRACBITS)
// translates between frame-buffer and map coordinates
#define CXMTOF(x) (f_x + MTOF((x)-m_x))
#define CYMTOF(y) (f_y + (f_h - MTOF((y)-m_y)))
// the following is crap
#define LINE_NEVERSEE ML_DONTDRAW
typedef struct
{
int x, y;
} fpoint_t;
typedef struct
{
fpoint_t a, b;
} fline_t;
typedef struct
{
fixed_t x,y;
} mpoint_t;
typedef struct
{
mpoint_t a, b;
} mline_t;
typedef struct
{
fixed_t slp, islp;
} islope_t;
//
// The vector graphics for the automap.
// A line drawing of the player pointing right,
// starting from the middle.
//
#define R ((8*PLAYERRADIUS)/7)
mline_t player_arrow[] = {
{ { -R+R/8, 0 }, { R, 0 } }, // -----
{ { R, 0 }, { R-R/2, R/4 } }, // ----->
{ { R, 0 }, { R-R/2, -R/4 } },
{ { -R+R/8, 0 }, { -R-R/8, R/4 } }, // >---->
{ { -R+R/8, 0 }, { -R-R/8, -R/4 } },
{ { -R+3*R/8, 0 }, { -R+R/8, R/4 } }, // >>--->
{ { -R+3*R/8, 0 }, { -R+R/8, -R/4 } }
};
#undef R
#define R ((8*PLAYERRADIUS)/7)
mline_t cheat_player_arrow[] = {
{ { -R+R/8, 0 }, { R, 0 } }, // -----
{ { R, 0 }, { R-R/2, R/6 } }, // ----->
{ { R, 0 }, { R-R/2, -R/6 } },
{ { -R+R/8, 0 }, { -R-R/8, R/6 } }, // >----->
{ { -R+R/8, 0 }, { -R-R/8, -R/6 } },
{ { -R+3*R/8, 0 }, { -R+R/8, R/6 } }, // >>----->
{ { -R+3*R/8, 0 }, { -R+R/8, -R/6 } },
{ { -R/2, 0 }, { -R/2, -R/6 } }, // >>-d--->
{ { -R/2, -R/6 }, { -R/2+R/6, -R/6 } },
{ { -R/2+R/6, -R/6 }, { -R/2+R/6, R/4 } },
{ { -R/6, 0 }, { -R/6, -R/6 } }, // >>-dd-->
{ { -R/6, -R/6 }, { 0, -R/6 } },
{ { 0, -R/6 }, { 0, R/4 } },
{ { R/6, R/4 }, { R/6, -R/7 } }, // >>-ddt->
{ { R/6, -R/7 }, { R/6+R/32, -R/7-R/32 } },
{ { R/6+R/32, -R/7-R/32 }, { R/6+R/10, -R/7 } }
};
#undef R
#define R (FRACUNIT)
mline_t triangle_guy[] = {
{ { (fixed_t)(-.867*R), (fixed_t)(-.5*R) }, { (fixed_t)(.867*R ), (fixed_t)(-.5*R) } },
{ { (fixed_t)(.867*R ), (fixed_t)(-.5*R) }, { (fixed_t)(0 ), (fixed_t)(R ) } },
{ { (fixed_t)(0 ), (fixed_t)(R ) }, { (fixed_t)(-.867*R), (fixed_t)(-.5*R) } }
};
#undef R
#define R (FRACUNIT)
mline_t thintriangle_guy[] = {
{ { (fixed_t)(-.5*R), (fixed_t)(-.7*R) }, { (fixed_t)(R ), (fixed_t)(0 ) } },
{ { (fixed_t)(R ), (fixed_t)(0 ) }, { (fixed_t)(-.5*R), (fixed_t)(.7*R ) } },
{ { (fixed_t)(-.5*R), (fixed_t)(.7*R ) }, { (fixed_t)(-.5*R), (fixed_t)(-.7*R) } }
};
#undef R
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 - ST_HEIGHT;
// location of window on screen
static int f_x;
static int f_y;
// size of window on screen
static int f_w;
static int f_h;
static int lightlev; // used for funky strobing effect
static pixel_t* 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;
static fixed_t m_h;
// based on level size
static fixed_t min_x;
static fixed_t min_y;
static fixed_t max_x;
static fixed_t max_y;
static fixed_t max_w; // max_x-min_x,
static fixed_t max_h; // max_y-min_y
// based on player size
static fixed_t min_w;
static fixed_t min_h;
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 = (fixed_t)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 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
cheatseq_t cheat_amap = CHEAT("iddt", 0);
static boolean stopped = true;
// 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.
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?-INT_MAX:INT_MAX);
else is->islp = FixedDiv(dx, dy);
if (!dx) is->slp = (dy<0?-INT_MAX:INT_MAX);
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;
}
//
// Determines bounding box of all vertices,
// sets global variables controlling zoom range.
//
void AM_findMinMaxBoundaries(void)
{
int i;
fixed_t a;
fixed_t b;
min_x = min_y = INT_MAX;
max_x = max_y = -INT_MAX;
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; // const? never changed?
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 = INT_MAX;
}
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;
else if (m_x + m_w/2 < min_x)
m_x = min_x - m_w/2;
if (m_y + m_h/2 > max_y)
m_y = max_y - m_h/2;
else if (m_y + m_h/2 < min_y)
m_y = min_y - m_h/2;
m_x2 = m_x + m_w;
m_y2 = m_y + m_h;
}
//
//
//
void AM_initVariables(void)
{
int pnum;
static event_t st_notify = { ev_keyup, AM_MSGENTERED, 0, 0 };
automapactive = true;
fb = I_VideoBuffer;
f_oldloc.x = INT_MAX;
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[consoleplayer])
{
plr = &players[consoleplayer];
}
else
{
plr = &players[0];
for (pnum=0;pnum<MAXPLAYERS;pnum++)
{
if (playeringame[pnum])
{
plr = &players[pnum];
break;
}
}
}
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;
// inform the status bar of the change
ST_Responder(&st_notify);
}
//
//
//
void AM_loadPics(void)
{
int i;
char namebuf[9];
for (i=0;i<10;i++)
{
DEH_snprintf(namebuf, 9, "AMMNUM%d", i);
marknums[i] = W_CacheLumpName(namebuf, PU_STATIC);
}
}
void AM_unloadPics(void)
{
int i;
char namebuf[9];
for (i=0;i<10;i++)
{
DEH_snprintf(namebuf, 9, "AMMNUM%d", i);
W_ReleaseLumpName(namebuf);
}
}
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;
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);
}
//
//
//
void AM_Stop (void)
{
static event_t st_notify = { 0, ev_keyup, AM_MSGEXITED, 0 };
AM_unloadPics();
automapactive = false;
ST_Responder(&st_notify);
stopped = true;
}
//
//
//
void AM_Start (void)
{
static int lastlevel = -1, lastepisode = -1;
if (!stopped) AM_Stop();
stopped = false;
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();
}
//
// Handle events (user inputs) in automap mode
//
boolean
AM_Responder
( event_t* ev )
{
int rc;
static int bigstate=0;
static char buffer[20];
int key;
rc = false;
if (ev->type == ev_joystick && joybautomap >= 0
&& (ev->data1 & (1 << joybautomap)) != 0)
{
joywait = I_GetTime() + 5;
if (!automapactive)
{
AM_Start ();
viewactive = false;
}
else
{
bigstate = 0;
viewactive = true;
AM_Stop ();
}
return true;
}
if (!automapactive)
{
if (ev->type == ev_keydown && ev->data1 == key_map_toggle)
{
AM_Start ();
viewactive = false;
rc = true;
}
}
else if (ev->type == ev_keydown)
{
rc = true;
key = ev->data1;
if (key == key_map_east) // pan right
{
if (!followplayer) m_paninc.x = FTOM(F_PANINC);
else rc = false;
}
else if (key == key_map_west) // pan left
{
if (!followplayer) m_paninc.x = -FTOM(F_PANINC);
else rc = false;
}
else if (key == key_map_north) // pan up
{
if (!followplayer) m_paninc.y = FTOM(F_PANINC);
else rc = false;
}
else if (key == key_map_south) // pan down
{
if (!followplayer) m_paninc.y = -FTOM(F_PANINC);
else rc = false;
}
else if (key == key_map_zoomout) // zoom out
{
mtof_zoommul = M_ZOOMOUT;
ftom_zoommul = M_ZOOMIN;
}
else if (key == key_map_zoomin) // zoom in
{
mtof_zoommul = M_ZOOMIN;
ftom_zoommul = M_ZOOMOUT;
}
else if (key == key_map_toggle)
{
bigstate = 0;
viewactive = true;
AM_Stop ();
}
else if (key == key_map_maxzoom)
{
bigstate = !bigstate;
if (bigstate)
{
AM_saveScaleAndLoc();
AM_minOutWindowScale();
}
else AM_restoreScaleAndLoc();
}
else if (key == key_map_follow)
{
followplayer = !followplayer;
f_oldloc.x = INT_MAX;
if (followplayer)
plr->message = DEH_String(AMSTR_FOLLOWON);
else
plr->message = DEH_String(AMSTR_FOLLOWOFF);
}
else if (key == key_map_grid)
{
grid = !grid;
if (grid)
plr->message = DEH_String(AMSTR_GRIDON);
else
plr->message = DEH_String(AMSTR_GRIDOFF);
}
else if (key == key_map_mark)
{
M_snprintf(buffer, sizeof(buffer), "%s %d",
DEH_String(AMSTR_MARKEDSPOT), markpointnum);
plr->message = buffer;
AM_addMark();
}
else if (key == key_map_clearmark)
{
AM_clearMarks();
plr->message = DEH_String(AMSTR_MARKSCLEARED);
}
else
{
rc = false;
}
if ((!deathmatch || gameversion <= exe_doom_1_8)
&& cht_CheckCheat(&cheat_amap, ev->data2))
{
rc = false;
cheating = (cheating + 1) % 3;
}
}
else if (ev->type == ev_keyup)
{
rc = false;
key = ev->data1;
if (key == key_map_east)
{
if (!followplayer) m_paninc.x = 0;
}
else if (key == key_map_west)
{
if (!followplayer) m_paninc.x = 0;
}
else if (key == key_map_north)
{
if (!followplayer) m_paninc.y = 0;
}
else if (key == key_map_south)
{
if (!followplayer) m_paninc.y = 0;
}
else if (key == key_map_zoomout || key == key_map_zoomin)
{
mtof_zoommul = FRACUNIT;
ftom_zoommul = FRACUNIT;
}
}
return rc;
}
//
// Zooming
//
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_x2 = m_x + m_w;
m_y2 = m_y + m_h;
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;
}
}
//
//
//
void AM_updateLightLev(void)
{
static int 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 == arrlen(litelevels)) litelevelscnt = 0;
nexttic = amclock + 6 - (amclock % 6);
}
}
//
// Updates on Game Tick
//
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();
}
//
// Clear automap frame buffer.
//
void AM_clearFB(int color)
{
memset(fb, color, f_w*f_h*sizeof(*fb));
}
//
// Automap clipping of lines.
//
// Based on Cohen-Sutherland clipping algorithm but with a slightly
// faster reject and precalculated slopes. If the speed is needed,
// use a hash algorithm to handle the common cases.
//
boolean
AM_clipMline
( mline_t* ml,
fline_t* fl )
{
enum
{
LEFT =1,
RIGHT =2,
BOTTOM =4,
TOP =8
};
register int outcode1 = 0;
register int outcode2 = 0;
register int outside;
fpoint_t tmp;
int dx;
int 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;
}
else
{
tmp.x = 0;
tmp.y = 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 needed for speed
//
void
AM_drawFline
( fline_t* fl,
int color )
{
register int x;
register int y;
register int dx;
register int dy;
register int sx;
register int sy;
register int ax;
register int ay;
register int d;
static int fuck = 0;
// 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)
{
DEH_fprintf(stderr, "fuck %d \r", fuck++);
return;
}
#define PUTDOT(xx,yy,cc) fb[(yy)*f_w+(xx)]=(cc)
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)
{
PUTDOT(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)
{
PUTDOT(x, y, color);
if (y == fl->b.y) return;
if (d >= 0)
{
x += sx;
d -= ay;
}
y += sy;
d += ax;
}
}
}
//
// Clip lines, draw visible part sof lines.
//
void
AM_drawMline
( mline_t* ml,
int color )
{
static fline_t fl;
if (AM_clipMline(ml, &fl))
AM_drawFline(&fl, color); // draws it on frame buffer using fb coords
}
//
// Draws flat (floor/ceiling tile) aligned grid lines.
//
void AM_drawGrid(int color)
{
fixed_t x, y;
fixed_t start, end;
mline_t ml;
// Figure out start of vertical gridlines
start = m_x;
if ((start-bmaporgx)%(MAPBLOCKUNITS<<FRACBITS))
start += (MAPBLOCKUNITS<<FRACBITS)
- ((start-bmaporgx)%(MAPBLOCKUNITS<<FRACBITS));
end = m_x + m_w;
// draw vertical gridlines
ml.a.y = m_y;
ml.b.y = m_y+m_h;
for (x=start; x<end; x+=(MAPBLOCKUNITS<<FRACBITS))
{
ml.a.x = x;
ml.b.x = x;
AM_drawMline(&ml, color);
}
// Figure out start of horizontal gridlines
start = m_y;
if ((start-bmaporgy)%(MAPBLOCKUNITS<<FRACBITS))
start += (MAPBLOCKUNITS<<FRACBITS)
- ((start-bmaporgy)%(MAPBLOCKUNITS<<FRACBITS));
end = m_y + m_h;
// draw horizontal gridlines
ml.a.x = m_x;
ml.b.x = m_x + m_w;
for (y=start; y<end; y+=(MAPBLOCKUNITS<<FRACBITS))
{
ml.a.y = y;
ml.b.y = y;
AM_drawMline(&ml, color);
}
}
//
// Determines visible lines, draws them.
// This is LineDef based, not LineSeg based.
//
void AM_drawWalls(void)
{
int i;
static mline_t l;
for (i=0;i<numlines;i++)
{
l.a.x = lines[i].v1->x;
l.a.y = lines[i].v1->y;
l.b.x = lines[i].v2->x;
l.b.y = lines[i].v2->y;
if (cheating || (lines[i].flags & ML_MAPPED))
{
if ((lines[i].flags & LINE_NEVERSEE) && !cheating)
continue;
if (!lines[i].backsector)
{
AM_drawMline(&l, WALLCOLORS+lightlev);
}
else
{
if (lines[i].special == 39)
{ // teleporters
AM_drawMline(&l, WALLCOLORS+WALLRANGE/2);
}
else if (lines[i].flags & ML_SECRET) // secret door
{
if (cheating) AM_drawMline(&l, SECRETWALLCOLORS + lightlev);
else AM_drawMline(&l, WALLCOLORS+lightlev);
}
else if (lines[i].backsector->floorheight
!= lines[i].frontsector->floorheight) {
AM_drawMline(&l, FDWALLCOLORS + lightlev); // floor level change
}
else if (lines[i].backsector->ceilingheight
!= lines[i].frontsector->ceilingheight) {
AM_drawMline(&l, CDWALLCOLORS+lightlev); // ceiling level change
}
else if (cheating) {
AM_drawMline(&l, TSWALLCOLORS+lightlev);
}
}
}
else if (plr->powers[pw_allmap])
{
if (!(lines[i].flags & LINE_NEVERSEE)) AM_drawMline(&l, GRAYS+3);
}
}
}
//
// Rotation in 2D.
// Used to rotate player arrow line character.
//
void
AM_rotate
( fixed_t* x,
fixed_t* y,
angle_t a )
{
fixed_t tmpx;
tmpx =
FixedMul(*x,finecosine[a>>ANGLETOFINESHIFT])
- FixedMul(*y,finesine[a>>ANGLETOFINESHIFT]);
*y =
FixedMul(*x,finesine[a>>ANGLETOFINESHIFT])
+ FixedMul(*y,finecosine[a>>ANGLETOFINESHIFT]);
*x = tmpx;
}
void
AM_drawLineCharacter
( mline_t* lineguy,
int lineguylines,
fixed_t scale,
angle_t angle,
int color,
fixed_t x,
fixed_t y )
{
int i;
mline_t l;
for (i=0;i<lineguylines;i++)
{
l.a.x = lineguy[i].a.x;
l.a.y = lineguy[i].a.y;
if (scale)
{
l.a.x = FixedMul(scale, l.a.x);
l.a.y = FixedMul(scale, l.a.y);
}
if (angle)
AM_rotate(&l.a.x, &l.a.y, angle);
l.a.x += x;
l.a.y += y;
l.b.x = lineguy[i].b.x;
l.b.y = lineguy[i].b.y;
if (scale)
{
l.b.x = FixedMul(scale, l.b.x);
l.b.y = FixedMul(scale, l.b.y);
}
if (angle)
AM_rotate(&l.b.x, &l.b.y, angle);
l.b.x += x;
l.b.y += y;
AM_drawMline(&l, color);
}
}
void AM_drawPlayers(void)
{
int i;
player_t* p;
static int their_colors[] = { GREENS, GRAYS, BROWNS, REDS };
int their_color = -1;
int color;
if (!netgame)
{
if (cheating)
AM_drawLineCharacter
(cheat_player_arrow, arrlen(cheat_player_arrow), 0,
plr->mo->angle, WHITE, plr->mo->x, plr->mo->y);
else
AM_drawLineCharacter
(player_arrow, arrlen(player_arrow), 0, plr->mo->angle,
WHITE, plr->mo->x, plr->mo->y);
return;
}
for (i=0;i<MAXPLAYERS;i++)
{
their_color++;
p = &players[i];
if ( (deathmatch && !singledemo) && p != plr)
continue;
if (!playeringame[i])
continue;
if (p->powers[pw_invisibility])
color = 246; // *close* to black
else
color = their_colors[their_color];
AM_drawLineCharacter
(player_arrow, arrlen(player_arrow), 0, p->mo->angle,
color, p->mo->x, p->mo->y);
}
}
void
AM_drawThings
( int colors,
int colorrange)
{
int i;
mobj_t* t;
for (i=0;i<numsectors;i++)
{
t = sectors[i].thinglist;
while (t)
{
AM_drawLineCharacter
(thintriangle_guy, arrlen(thintriangle_guy),
16<<FRACBITS, t->angle, colors+lightlev, t->x, t->y);
t = t->snext;
}
}
}
void AM_drawMarks(void)
{
int i, fx, fy, w, h;
for (i=0;i<AM_NUMMARKPOINTS;i++)
{
if (markpoints[i].x != -1)
{
// w = SHORT(marknums[i]->width);
// h = SHORT(marknums[i]->height);
w = 5; // because something's wrong with the wad, i guess
h = 6; // because something's wrong with the wad, i guess
fx = CXMTOF(markpoints[i].x);
fy = CYMTOF(markpoints[i].y);
if (fx >= f_x && fx <= f_w - w && fy >= f_y && fy <= f_h - h)
V_DrawPatch(fx, fy, marknums[i]);
}
}
}
void AM_drawCrosshair(int color)
{
fb[(f_w*(f_h+1))/2] = color; // single point for now
}
void AM_Drawer (void)
{
if (!automapactive) return;
AM_clearFB(BACKGROUND);
if (grid)
AM_drawGrid(GRIDCOLORS);
AM_drawWalls();
AM_drawPlayers();
if (cheating==2)
AM_drawThings(THINGCOLORS, THINGRANGE);
AM_drawCrosshair(XHAIRCOLORS);
AM_drawMarks();
V_MarkRect(f_x, f_y, f_w, f_h);
}