forked from FrenkelS/Doom8088
-
Notifications
You must be signed in to change notification settings - Fork 0
/
am_map.c
1179 lines (1030 loc) · 32.1 KB
/
am_map.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/* Emacs style mode select -*- C++ -*-
*-----------------------------------------------------------------------------
*
*
* PrBoom: a Doom port merged with LxDoom and LSDLDoom
* based on BOOM, a modified and improved DOOM engine
* Copyright (C) 1999 by
* id Software, Chi Hoang, Lee Killough, Jim Flynn, Rand Phares, Ty Halderman
* Copyright (C) 1999-2000 by
* Jess Haas, Nicolas Kalkhof, Colin Phipps, Florian Schulze
* Copyright 2005, 2006 by
* Florian Schulze, Colin Phipps, Neil Stevens, Andrey Budko
* Copyright 2023 by
* Frenkel Smeijers
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
* DESCRIPTION:
* the automap code
*
*-----------------------------------------------------------------------------
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdint.h>
#include "doomstat.h"
#include "r_defs.h"
#include "st_stuff.h"
#include "r_main.h"
#include "p_setup.h"
#include "p_maputl.h"
#include "w_wad.h"
#include "v_video.h"
#include "p_spec.h"
#include "am_map.h"
#include "d_englsh.h"
#include "g_game.h"
#include "globdata.h"
static const int32_t mapcolor_back = 247; // map background
static const int32_t mapcolor_wall = 23; // normal 1s wall color
static const int32_t mapcolor_fchg = 55; // line at floor height change color
static const int32_t mapcolor_cchg = 215; // line at ceiling height change color
static const int32_t mapcolor_clsd = 208; // line at sector with floor=ceiling color
static const int32_t mapcolor_rdor = 175; // red door color (diff from keys to allow option)
static const int32_t mapcolor_bdor = 204; // blue door color (of enabling one but not other )
static const int32_t mapcolor_ydor = 231; // yellow door color
static const int32_t mapcolor_tele = 119; // teleporter line color
static const int32_t mapcolor_secr = 252; // secret sector boundary color
static const int32_t mapcolor_exit = 0; // jff 4/23/98 add exit line color
static const int32_t mapcolor_unsn = 104; // computer map unseen line color
static const int32_t mapcolor_flat = 88; // line with no floor/ceiling changes
static const int32_t mapcolor_sngl = 208; // single player arrow color
static const int32_t map_secret_after = 0;
static const int32_t f_w = (SCREENWIDTH*2);
static const int32_t f_h = SCREENHEIGHT-ST_SCALED_HEIGHT;// to allow runtime setting of width/height
typedef struct
{
fixed_t x,y;
} mpoint_t;
static mpoint_t m_paninc; // how far the window pans each tic (map coords)
static fixed_t m_x, m_y; // LL x,y window location on the map (map coords)
static fixed_t m_x2, m_y2; // UR x,y window location 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
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 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 int32_t lastlevel = -1;
static int32_t lastepisode = -1;
static boolean stopped = true;
static fixed_t mtof_zoommul = FRACUNIT; // how far the window zooms each tic (map coords)
static fixed_t ftom_zoommul = FRACUNIT; // how far the window zooms each tic (fb coords)
// 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 ((int32_t) (1.02*FRACUNIT))
// how much zoom-out per tic
// pulls out to 0.5x in 1 second
#define M_ZOOMOUT ((int32_t) (FRACUNIT/1.02))
#define MAPBITS 12
#define FRACTOMAPBITS (FRACBITS-MAPBITS)
#define PLAYERRADIUS (16L*(1<<MAPBITS)) // e6y
// translates between frame-buffer and map distances
#define FTOM(x) FixedMul((((int32_t)x)<<16),scale_ftom)
#define MTOF(x) (FixedMul((x),scale_mtof)>>16)
// translates between frame-buffer and map coordinates
#define CXMTOF(x) (MTOF((x)- m_x))
#define CYMTOF(y) ((f_h - MTOF((y)- m_y)))
typedef struct
{
mpoint_t a, b;
} mline_t;
typedef struct
{
int32_t x, y;
} fpoint_t;
typedef struct
{
fpoint_t a, b;
} fline_t;
//
// The vector graphics for the automap.
// A line drawing of the player pointing right,
// starting from the middle.
//
#define R ((8*PLAYERRADIUS)/7)
static const 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 NUMPLYRLINES (sizeof(player_arrow)/sizeof(mline_t))
//
// AM_activateNewScale()
//
// Changes the map scale after zooming or translating
//
// Passed nothing, returns nothing
//
static 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;
}
//
// AM_findMinMaxBoundaries()
//
// Determines bounding box of all vertices,
// sets global variables controlling zoom range.
//
// Passed nothing, returns nothing
//
static void AM_findMinMaxBoundaries(void)
{
int32_t i;
fixed_t a;
fixed_t b;
min_x = min_y = INT32_MAX;
max_x = max_y = -INT32_MAX;
for (i=0;i<_g->numvertexes;i++)
{
if (_g->vertexes[i].x < min_x)
min_x = _g->vertexes[i].x;
else if (_g->vertexes[i].x > max_x)
max_x = _g->vertexes[i].x;
if (_g->vertexes[i].y < min_y)
min_y = _g->vertexes[i].y;
else if (_g->vertexes[i].y > max_y)
max_y = _g->vertexes[i].y;
}
max_w = (max_x >>= FRACTOMAPBITS) - (min_x >>= FRACTOMAPBITS);//e6y
max_h = (max_y >>= FRACTOMAPBITS) - (min_y >>= FRACTOMAPBITS);//e6y
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);
}
//
// AM_changeWindowLoc()
//
// Moves the map window by the global variables m_paninc.x, m_paninc.y
//
// Passed nothing, returns nothing
//
static void AM_changeWindowLoc(void)
{
if (m_paninc.x || m_paninc.y)
{
_g->automapmode &= ~am_follow;
f_oldloc.x = INT32_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;
}
//
// AM_initVariables()
//
// Initialize the variables for the automap
//
// Affects the automap global variables
// Status bar is notified that the automap has been entered
// Passed nothing, returns nothing
//
static void AM_initVariables(void)
{
static const event_t st_notify = { ev_keyup, AM_MSGENTERED, 0, 0 };
_g->automapmode |= am_active;
f_oldloc.x = INT32_MAX;
m_paninc.x = m_paninc.y = 0;
m_w = FTOM(f_w);
m_h = FTOM(f_h);
m_x = (_g->player.mo->x >> FRACTOMAPBITS) - m_w/2;//e6y
m_y = (_g->player.mo->y >> FRACTOMAPBITS) - m_h/2;//e6y
AM_changeWindowLoc();
// inform the status bar of the change
ST_Responder(&st_notify);
}
//
// AM_LevelInit()
//
// Initialize the automap at the start of a new level
// should be called at the start of every level
//
// Passed nothing, returns nothing
// Affects automap's global variables
//
// CPhipps - get status bar height from status bar code
static void AM_LevelInit(void)
{
AM_findMinMaxBoundaries();
scale_mtof = FixedDiv(min_scale_mtof, (int32_t) (0.7*FRACUNIT));
if (scale_mtof > max_scale_mtof)
scale_mtof = min_scale_mtof;
scale_ftom = FixedDiv(FRACUNIT, scale_mtof);
}
//
// AM_Stop()
//
// Cease automap operations, unload patches, notify status bar
//
// Passed nothing, returns nothing
//
void AM_Stop (void)
{
static const event_t st_notify = { 0, ev_keyup, AM_MSGEXITED, 0 };
_g->automapmode = 0;
ST_Responder(&st_notify);
stopped = true;
}
//
// AM_Start()
//
// Start up automap operations,
// if a new level, or game start, (re)initialize level variables
// init map variables
// load mark patches
//
// Passed nothing, returns nothing
//
static void AM_Start(void)
{
if (!stopped)
AM_Stop();
stopped = false;
if (lastlevel != _g->gamemap || lastepisode != 1)
{
AM_LevelInit();
lastlevel = _g->gamemap;
lastepisode = 1;
}
AM_initVariables();
}
//
// AM_minOutWindowScale()
//
// Set the window scale to the maximum size
//
// Passed nothing, returns nothing
//
static void AM_minOutWindowScale(void)
{
scale_mtof = min_scale_mtof;
scale_ftom = FixedDiv(FRACUNIT, scale_mtof);
AM_activateNewScale();
}
//
// AM_maxOutWindowScale(void)
//
// Set the window scale to the minimum size
//
// Passed nothing, returns nothing
//
static void AM_maxOutWindowScale(void)
{
scale_mtof = max_scale_mtof;
scale_ftom = FixedDiv(FRACUNIT, scale_mtof);
AM_activateNewScale();
}
//
// AM_Responder()
//
// Handle events (user inputs) in automap mode
//
// Passed an input event, returns true if its handled
//
boolean AM_Responder
( event_t* ev )
{
int32_t rc;
int32_t ch; // phares
rc = false;
if (!(_g->automapmode & am_active))
{
if (ev->type == ev_keydown && ev->data1 == key_map) // phares
{
AM_Start ();
rc = true;
}
}
else if (ev->type == ev_keydown)
{
rc = true;
ch = ev->data1; // phares
if (ch == key_map_right) // |
if (!(_g->automapmode & am_follow)) // V
m_paninc.x = FTOM(F_PANINC);
else
rc = false;
else if (ch == key_map_left)
if (!(_g->automapmode & am_follow))
m_paninc.x = -FTOM(F_PANINC);
else
rc = false;
else if (ch == key_map_up)
if (!(_g->automapmode & am_follow))
m_paninc.y = FTOM(F_PANINC);
else
rc = false;
else if (ch == key_map_down)
if (!(_g->automapmode & am_follow))
m_paninc.y = -FTOM(F_PANINC);
else
rc = false;
else if (ch == key_map)
{
if(_g->automapmode & am_overlay)
AM_Stop ();
else
_g->automapmode |= (am_overlay | am_rotate | am_follow);
}
else if (ch == key_map_follow && _g->gamekeydown[key_use])
{
_g->automapmode ^= am_follow; // CPhipps - put all automap mode stuff into one enum
f_oldloc.x = INT32_MAX;
// Ty 03/27/98 - externalized
_g->player.message = (_g->automapmode & am_follow) ? AMSTR_FOLLOWON : AMSTR_FOLLOWOFF;
} // |
else if (ch == key_map_zoomout)
{
mtof_zoommul = M_ZOOMOUT;
ftom_zoommul = M_ZOOMIN;
}
else if (ch == key_map_zoomin)
{
mtof_zoommul = M_ZOOMIN;
ftom_zoommul = M_ZOOMOUT;
}
else // phares
{
rc = false;
}
}
else if (ev->type == ev_keyup)
{
rc = false;
ch = ev->data1;
if (ch == key_map_right)
{
if (!(_g->automapmode & am_follow))
m_paninc.x = 0;
}
else if (ch == key_map_left)
{
if (!(_g->automapmode & am_follow))
m_paninc.x = 0;
}
else if (ch == key_map_up)
{
if (!(_g->automapmode & am_follow))
m_paninc.y = 0;
}
else if (ch == key_map_down)
{
if (!(_g->automapmode & am_follow))
m_paninc.y = 0;
}
else if ((ch == key_map_zoomout) || (ch == key_map_zoomin))
{
mtof_zoommul = FRACUNIT;
ftom_zoommul = FRACUNIT;
}
}
return rc;
}
//
// AM_rotate()
//
// Rotation in 2D.
// Used to rotate player arrow line character.
//
// Passed the coordinates of a point, and an angle
// Returns the coordinates rotated by the angle
//
// CPhipps - made static & enhanced for automap rotation
static void AM_rotate(fixed_t* x, fixed_t* y, angle_t a, fixed_t xorig, fixed_t yorig)
{
fixed_t tmpx;
//e6y
xorig>>=FRACTOMAPBITS;
yorig>>=FRACTOMAPBITS;
tmpx =
FixedMul(*x - xorig,finecosine(a>>ANGLETOFINESHIFT)) -
FixedMul(*y - yorig,finesine( a>>ANGLETOFINESHIFT));
*y = yorig +
FixedMul(*x - xorig,finesine( a>>ANGLETOFINESHIFT)) +
FixedMul(*y - yorig,finecosine(a>>ANGLETOFINESHIFT));
*x = tmpx + xorig;
}
//
// AM_changeWindowScale()
//
// Automap zooming
//
// Passed nothing, returns nothing
//
static 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();
}
//
// AM_doFollowPlayer()
//
// Turn on follow mode - the map scrolls opposite to player motion
//
// Passed nothing, returns nothing
//
static void AM_doFollowPlayer(void)
{
if (f_oldloc.x != _g->player.mo->x || f_oldloc.y != _g->player.mo->y)
{
m_x = FTOM(MTOF(_g->player.mo->x >> FRACTOMAPBITS)) - m_w/2;//e6y
m_y = FTOM(MTOF(_g->player.mo->y >> FRACTOMAPBITS)) - m_h/2;//e6y
m_x2 = m_x + m_w;
m_y2 = m_y + m_h;
f_oldloc.x = _g->player.mo->x;
f_oldloc.y = _g->player.mo->y;
}
}
//
// AM_Ticker()
//
// Updates on gametic - enter follow mode, zoom, or change map location
//
// Passed nothing, returns nothing
//
void AM_Ticker (void)
{
if (!(_g->automapmode & am_active))
return;
if (_g->automapmode & am_follow)
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();
}
//
// AM_clipMline()
//
// 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.
//
// Passed the line's coordinates on map and in the frame buffer performs
// clipping on them in the lines frame coordinates.
// Returns true if any part of line was not clipped
//
static boolean AM_clipMline(mline_t* ml, fline_t* fl)
{
enum
{
LEFT =1,
RIGHT =2,
BOTTOM =4,
TOP =8
};
register int32_t outcode1 = 0;
register int32_t outcode2 = 0;
register int32_t outside;
fpoint_t tmp;
int32_t dx;
int32_t 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
static void V_PlotPixel(int32_t x, int32_t y, int32_t color)
{
byte* fb = (byte*)_g->screen;
byte* dest = &fb[(ScreenYToOffset(y) << 1) + x];
//The GBA must write in 16bits.
if((uint32_t)dest & 1)
{
//Odd addreses, we combine existing pixel with new one.
uint16_t* dest16 = (uint16_t*)(dest - 1);
uint16_t old = *dest16;
*dest16 = (old & 0xff) | (color << 8);
}
else
{
uint16_t* dest16 = (uint16_t*)dest;
uint16_t old = *dest16;
*dest16 = ((color & 0xff) | (old & 0xff00));
}
}
//
// WRAP_V_DrawLine()
//
// Draw a line in the frame buffer.
// Classic Bresenham w/ whatever optimizations needed for speed
//
// Passed the frame coordinates of line, and the color to be drawn
// Returns nothing
//
static void V_DrawLine(fline_t* fl, int32_t color)
{
int32_t x0 = fl->a.x;
int32_t x1 = fl->b.x;
int32_t y0 = fl->a.y;
int32_t y1 = fl->b.y;
int32_t dx = D_abs(x1-x0);
int32_t sx = x0<x1 ? 1 : -1;
int32_t dy = -D_abs(y1-y0);
int32_t sy = y0<y1 ? 1 : -1;
int32_t err = dx + dy;
while(true)
{
V_PlotPixel(x0, y0, color);
if (x0==x1 && y0==y1)
break;
int32_t e2 = 2*err;
if (e2 >= dy)
{
err += dy;
x0 += sx;
}
if (e2 <= dx)
{
err += dx;
y0 += sy;
}
}
}
//
// AM_drawMline()
//
// Clip lines, draw visible parts of lines.
//
// Passed the map coordinates of the line, and the color to draw it
// Color -1 is special and prevents drawing. Color 247 is special and
// is translated to black, allowing Color 0 to represent feature disable
// in the defaults file.
// Returns nothing.
//
static void AM_drawMline(mline_t* ml,int32_t color)
{
fline_t fl;
if (color==-1) // jff 4/3/98 allow not drawing any sort of line
return; // by setting its color to -1
if (color==247) // jff 4/3/98 if color is 247 (xparent), use black
color=0;
if (AM_clipMline(ml, &fl))
V_DrawLine(&fl, color); // draws it on frame buffer using fb coords
}
//
// AM_DoorColor()
//
// Returns the 'color' or key needed for a door linedef type
//
// Passed the type of linedef, returns:
// -1 if not a keyed door
// 0 if a red key required
// 1 if a blue key required
// 2 if a yellow key required
// 3 if a multiple keys required
//
// jff 4/3/98 add routine to get color of generalized keyed door
//
static int32_t AM_DoorColor(int32_t type)
{
if (GenLockedBase <= type && type< GenDoorBase)
{
type -= GenLockedBase;
type = (type & LockedKey) >> LockedKeyShift;
if (!type || type==7)
return 3; //any or all keys
else return (type-1)%3;
}
switch (type) // closed keyed door
{
case 26: case 32: case 99: case 133:
/*bluekey*/
return 1;
case 27: case 34: case 136: case 137:
/*yellowkey*/
return 2;
case 28: case 33: case 134: case 135:
/*redkey*/
return 0;
default:
return -1; //not a keyed door
}
}
//
// Determines visible lines, draws them.
// This is LineDef based, not LineSeg based.
//
// jff 1/5/98 many changes in this routine
// backward compatibility not needed, so just changes, no ifs
// addition of clauses for:
// doors opening, keyed door id, secret sectors,
// teleports, exit lines, key things
// ability to suppress any of added features or lines with no height changes
//
// support for gamma correction in automap abandoned
//
// jff 4/3/98 changed mapcolor_xxxx=0 as control to disable feature
// jff 4/3/98 changed mapcolor_xxxx=-1 to disable drawing line completely
//
static void AM_drawWalls(void)
{
int32_t i;
mline_t l;
// draw the unclipped visible portions of all lines
for (i=0;i<_g->numlines;i++)
{
l.a.x = _g->lines[i].v1.x >> FRACTOMAPBITS;//e6y
l.a.y = _g->lines[i].v1.y >> FRACTOMAPBITS;//e6y
l.b.x = _g->lines[i].v2.x >> FRACTOMAPBITS;//e6y
l.b.y = _g->lines[i].v2.y >> FRACTOMAPBITS;//e6y
const sector_t* backsector = LN_BACKSECTOR(&_g->lines[i]);
const sector_t* frontsector = LN_FRONTSECTOR(&_g->lines[i]);
const uint32_t line_special = LN_SPECIAL(&_g->lines[i]);
if (_g->automapmode & am_rotate)
{
AM_rotate(&l.a.x, &l.a.y, ANG90-_g->player.mo->angle, _g->player.mo->x, _g->player.mo->y);
AM_rotate(&l.b.x, &l.b.y, ANG90-_g->player.mo->angle, _g->player.mo->x, _g->player.mo->y);
}
// if line has been seen or IDDT has been used
if (_g->linedata[i].r_flags & ML_MAPPED)
{
if (_g->lines[i].flags & ML_DONTDRAW)
continue;
{
/* cph - show keyed doors and lines */
int32_t amd;
if (!(_g->lines[i].flags & ML_SECRET) && (amd = AM_DoorColor(line_special)) != -1)
{
{
switch (amd) /* closed keyed door */
{
case 1:
/*bluekey*/
AM_drawMline(&l,mapcolor_bdor);
continue;
case 2:
/*yellowkey*/
AM_drawMline(&l,mapcolor_ydor);
continue;
case 0:
/*redkey*/
AM_drawMline(&l,mapcolor_rdor);
continue;
case 3:
/*any or all*/
AM_drawMline(&l, mapcolor_clsd);
continue;
}
}
}
}
if /* jff 4/23/98 add exit lines to automap */
(
mapcolor_exit &&
(
line_special==11 ||
line_special==52 ||
line_special==197 ||
line_special==51 ||
line_special==124 ||
line_special==198
)
) {
AM_drawMline(&l, mapcolor_exit); /* exit line */
continue;
}
if(!backsector)
{
// jff 1/10/98 add new color for 1S secret sector boundary
if (mapcolor_secr && //jff 4/3/98 0 is disable
(
(
map_secret_after &&
P_WasSecret(frontsector) &&
!P_IsSecret(frontsector)
)
||
(
!map_secret_after &&
P_WasSecret(frontsector)
)
)
)
AM_drawMline(&l, mapcolor_secr); // line bounding secret sector
else //jff 2/16/98 fixed bug
AM_drawMline(&l, mapcolor_wall); // special was cleared
}
else /* now for 2S lines */
{
// jff 1/10/98 add color change for all teleporter types
if
(
mapcolor_tele && !(_g->lines[i].flags & ML_SECRET) &&
(line_special == 39 || line_special == 97 ||
line_special == 125 || line_special == 126)
)
{ // teleporters
AM_drawMline(&l, mapcolor_tele);
}
else if (_g->lines[i].flags & ML_SECRET) // secret door