3 Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; either version 2.1 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 #include "util/numeric.h"
23 #include "mapgen_v5.h"
24 #include "mapgen_v6.h"
25 #include "mapgen_v7.h"
28 NoiseParams nparams_caveliquids(0, 1, v3f(150.0, 150.0, 150.0), 776, 3, 0.6, 2.0);
31 ///////////////////////////////////////////////////////////////////////////////
34 CaveV6::CaveV6(MapgenV6 *mg, PseudoRandom *ps, PseudoRandom *ps2, bool is_large_cave) {
37 this->ndef = mg->ndef;
38 this->water_level = mg->water_level;
39 this->large_cave = is_large_cave;
42 this->c_water_source = mg->c_water_source;
43 this->c_lava_source = mg->c_lava_source;
45 min_tunnel_diameter = 2;
46 max_tunnel_diameter = ps->range(2, 6);
47 dswitchint = ps->range(1, 14);
51 part_max_length_rs = ps->range(2,4);
52 tunnel_routepoints = ps->range(5, ps->range(15,30));
53 min_tunnel_diameter = 5;
54 max_tunnel_diameter = ps->range(7, ps->range(8,24));
56 part_max_length_rs = ps->range(2,9);
57 tunnel_routepoints = ps->range(10, ps->range(15,30));
60 large_cave_is_flat = (ps->range(0,1) == 0);
64 void CaveV6::makeCave(v3s16 nmin, v3s16 nmax, int max_stone_height) {
67 max_stone_y = max_stone_height;
68 main_direction = v3f(0, 0, 0);
70 // Allowed route area size in nodes
71 ar = node_max - node_min + v3s16(1, 1, 1);
72 // Area starting point in nodes
76 //(this should be more than the maximum radius of the tunnel)
77 const s16 max_spread_amount = MAP_BLOCKSIZE;
79 s16 more = MYMAX(max_spread_amount - max_tunnel_diameter / 2 - insure, 1);
80 ar += v3s16(1,0,1) * more * 2;
81 of -= v3s16(1,0,1) * more;
84 // Allow half a diameter + 7 over stone surface
85 route_y_max = -of.Y + max_stone_y + max_tunnel_diameter / 2 + 7;
87 // Limit maximum to area
88 route_y_max = rangelim(route_y_max, 0, ar.Y - 1);
92 if (node_min.Y < water_level && node_max.Y > water_level) {
93 min = water_level - max_tunnel_diameter/3 - of.Y;
94 route_y_max = water_level + max_tunnel_diameter/3 - of.Y;
96 route_y_min = ps->range(min, min + max_tunnel_diameter);
97 route_y_min = rangelim(route_y_min, 0, route_y_max);
100 s16 route_start_y_min = route_y_min;
101 s16 route_start_y_max = route_y_max;
103 route_start_y_min = rangelim(route_start_y_min, 0, ar.Y-1);
104 route_start_y_max = rangelim(route_start_y_max, route_start_y_min, ar.Y-1);
106 // Randomize starting position
108 (float)(ps->next() % ar.X) + 0.5,
109 (float)(ps->range(route_start_y_min, route_start_y_max)) + 0.5,
110 (float)(ps->next() % ar.Z) + 0.5
113 // Add generation notify begin event
114 v3s16 abs_pos(of.X + orp.X, of.Y + orp.Y, of.Z + orp.Z);
115 GenNotifyType notifytype = large_cave ?
116 GENNOTIFY_LARGECAVE_BEGIN : GENNOTIFY_CAVE_BEGIN;
117 mg->gennotify.addEvent(notifytype, abs_pos);
119 // Generate some tunnel starting from orp
120 for (u16 j = 0; j < tunnel_routepoints; j++)
121 makeTunnel(j % dswitchint == 0);
123 // Add generation notify end event
124 abs_pos = v3s16(of.X + orp.X, of.Y + orp.Y, of.Z + orp.Z);
125 notifytype = large_cave ?
126 GENNOTIFY_LARGECAVE_END : GENNOTIFY_CAVE_END;
127 mg->gennotify.addEvent(notifytype, abs_pos);
131 void CaveV6::makeTunnel(bool dirswitch) {
132 if (dirswitch && !large_cave) {
133 main_direction = v3f(
134 ((float)(ps->next() % 20) - (float)10) / 10,
135 ((float)(ps->next() % 20) - (float)10) / 30,
136 ((float)(ps->next() % 20) - (float)10) / 10
138 main_direction *= (float)ps->range(0, 10) / 10;
142 s16 min_d = min_tunnel_diameter;
143 s16 max_d = max_tunnel_diameter;
144 rs = ps->range(min_d, max_d);
149 rs * part_max_length_rs,
150 rs * part_max_length_rs / 2,
151 rs * part_max_length_rs
155 rs * part_max_length_rs,
156 ps->range(1, rs * part_max_length_rs),
157 rs * part_max_length_rs
162 (float)(ps->next() % (maxlen.X * 1)) - (float)maxlen.X / 2,
163 (float)(ps->next() % (maxlen.Y * 1)) - (float)maxlen.Y / 2,
164 (float)(ps->next() % (maxlen.Z * 1)) - (float)maxlen.Z / 2
167 // Jump downward sometimes
168 if (!large_cave && ps->range(0, 12) == 0) {
170 (float)(ps->next() % (maxlen.X * 1)) - (float)maxlen.X / 2,
171 (float)(ps->next() % (maxlen.Y * 2)) - (float)maxlen.Y,
172 (float)(ps->next() % (maxlen.Z * 1)) - (float)maxlen.Z / 2
176 vec += main_direction;
181 else if (rp.X >= ar.X)
184 if (rp.Y < route_y_min)
186 else if (rp.Y >= route_y_max)
187 rp.Y = route_y_max - 1;
191 else if (rp.Z >= ar.Z)
196 float veclen = vec.getLength();
197 // As odd as it sounds, veclen is *exactly* 0.0 sometimes, causing a FPE
201 // Every second section is rough
202 bool randomize_xz = (ps2->range(1, 2) == 1);
205 for (float f = 0; f < 1.0; f += 1.0 / veclen)
206 carveRoute(vec, f, randomize_xz);
212 void CaveV6::carveRoute(v3f vec, float f, bool randomize_xz) {
213 MapNode airnode(CONTENT_AIR);
214 MapNode waternode(c_water_source);
215 MapNode lavanode(c_lava_source);
217 v3s16 startp(orp.X, orp.Y, orp.Z);
220 v3f fp = orp + vec * f;
221 fp.X += 0.1 * ps->range(-10, 10);
222 fp.Z += 0.1 * ps->range(-10, 10);
223 v3s16 cp(fp.X, fp.Y, fp.Z);
228 d0 += ps->range(-1, 1);
229 d1 += ps->range(-1, 1);
232 for (s16 z0 = d0; z0 <= d1; z0++) {
233 s16 si = rs / 2 - MYMAX(0, abs(z0) - rs / 7 - 1);
234 for (s16 x0 = -si - ps->range(0,1); x0 <= si - 1 + ps->range(0,1); x0++) {
235 s16 maxabsxz = MYMAX(abs(x0), abs(z0));
236 s16 si2 = rs / 2 - MYMAX(0, maxabsxz - rs / 7 - 1);
237 for (s16 y0 = -si2; y0 <= si2; y0++) {
238 if (large_cave_is_flat) {
239 // Make large caves not so tall
240 if (rs > 7 && abs(y0) >= rs / 3)
244 v3s16 p(cp.X + x0, cp.Y + y0, cp.Z + z0);
247 if (vm->m_area.contains(p) == false)
250 u32 i = vm->m_area.index(p);
251 content_t c = vm->m_data[i].getContent();
252 if (!ndef->get(c).is_ground_content)
256 int full_ymin = node_min.Y - MAP_BLOCKSIZE;
257 int full_ymax = node_max.Y + MAP_BLOCKSIZE;
259 if (flooded && full_ymin < water_level && full_ymax > water_level) {
260 vm->m_data[i] = (p.Y <= water_level) ? waternode : airnode;
261 } else if (flooded && full_ymax < water_level) {
262 vm->m_data[i] = (p.Y < startp.Y - 2) ? lavanode : airnode;
264 vm->m_data[i] = airnode;
267 // Don't replace air or water or lava or ignore
268 if (c == CONTENT_IGNORE || c == CONTENT_AIR ||
269 c == c_water_source || c == c_lava_source)
272 vm->m_data[i] = airnode;
273 vm->m_flags[i] |= VMANIP_FLAG_CAVE;
281 ///////////////////////////////////////// Caves V7
284 CaveV7::CaveV7(MapgenV7 *mg, PseudoRandom *ps, bool is_large_cave) {
287 this->ndef = mg->ndef;
288 this->water_level = mg->water_level;
289 this->large_cave = is_large_cave;
291 this->c_water_source = mg->c_water_source;
292 this->c_lava_source = mg->c_lava_source;
293 this->c_ice = mg->c_ice;
294 this->np_caveliquids = &nparams_caveliquids;
296 dswitchint = ps->range(1, 14);
297 flooded = ps->range(1, 2) == 2;
300 part_max_length_rs = ps->range(2, 4);
301 tunnel_routepoints = ps->range(5, ps->range(15, 30));
302 min_tunnel_diameter = 5;
303 max_tunnel_diameter = ps->range(7, ps->range(8, 24));
305 part_max_length_rs = ps->range(2, 9);
306 tunnel_routepoints = ps->range(10, ps->range(15, 30));
307 min_tunnel_diameter = 2;
308 max_tunnel_diameter = ps->range(2, 6);
311 large_cave_is_flat = (ps->range(0, 1) == 0);
315 void CaveV7::makeCave(v3s16 nmin, v3s16 nmax, int max_stone_height) {
318 max_stone_y = max_stone_height;
319 main_direction = v3f(0, 0, 0);
321 // Allowed route area size in nodes
322 ar = node_max - node_min + v3s16(1, 1, 1);
323 // Area starting point in nodes
327 //(this should be more than the maximum radius of the tunnel)
329 s16 more = MYMAX(MAP_BLOCKSIZE - max_tunnel_diameter / 2 - insure, 1);
330 ar += v3s16(1,0,1) * more * 2;
331 of -= v3s16(1,0,1) * more;
334 // Allow half a diameter + 7 over stone surface
335 route_y_max = -of.Y + max_stone_y + max_tunnel_diameter / 2 + 7;
337 // Limit maximum to area
338 route_y_max = rangelim(route_y_max, 0, ar.Y - 1);
342 if (node_min.Y < water_level && node_max.Y > water_level) {
343 min = water_level - max_tunnel_diameter/3 - of.Y;
344 route_y_max = water_level + max_tunnel_diameter/3 - of.Y;
346 route_y_min = ps->range(min, min + max_tunnel_diameter);
347 route_y_min = rangelim(route_y_min, 0, route_y_max);
350 s16 route_start_y_min = route_y_min;
351 s16 route_start_y_max = route_y_max;
353 route_start_y_min = rangelim(route_start_y_min, 0, ar.Y - 1);
354 route_start_y_max = rangelim(route_start_y_max, route_start_y_min, ar.Y - 1);
356 // Randomize starting position
358 (float)(ps->next() % ar.X) + 0.5,
359 (float)(ps->range(route_start_y_min, route_start_y_max)) + 0.5,
360 (float)(ps->next() % ar.Z) + 0.5
363 // Add generation notify begin event
364 v3s16 abs_pos(of.X + orp.X, of.Y + orp.Y, of.Z + orp.Z);
365 GenNotifyType notifytype = large_cave ?
366 GENNOTIFY_LARGECAVE_BEGIN : GENNOTIFY_CAVE_BEGIN;
367 mg->gennotify.addEvent(notifytype, abs_pos);
369 // Generate some tunnel starting from orp
370 for (u16 j = 0; j < tunnel_routepoints; j++)
371 makeTunnel(j % dswitchint == 0);
373 // Add generation notify end event
374 abs_pos = v3s16(of.X + orp.X, of.Y + orp.Y, of.Z + orp.Z);
375 notifytype = large_cave ?
376 GENNOTIFY_LARGECAVE_END : GENNOTIFY_CAVE_END;
377 mg->gennotify.addEvent(notifytype, abs_pos);
381 void CaveV7::makeTunnel(bool dirswitch) {
382 if (dirswitch && !large_cave) {
383 main_direction = v3f(
384 ((float)(ps->next() % 20) - (float)10) / 10,
385 ((float)(ps->next() % 20) - (float)10) / 30,
386 ((float)(ps->next() % 20) - (float)10) / 10
388 main_direction *= (float)ps->range(0, 10) / 10;
392 s16 min_d = min_tunnel_diameter;
393 s16 max_d = max_tunnel_diameter;
394 rs = ps->range(min_d, max_d);
399 rs * part_max_length_rs,
400 rs * part_max_length_rs / 2,
401 rs * part_max_length_rs
405 rs * part_max_length_rs,
406 ps->range(1, rs * part_max_length_rs),
407 rs * part_max_length_rs
412 // Jump downward sometimes
413 if (!large_cave && ps->range(0, 12) == 0) {
415 (float)(ps->next() % (maxlen.X * 1)) - (float)maxlen.X / 2,
416 (float)(ps->next() % (maxlen.Y * 2)) - (float)maxlen.Y,
417 (float)(ps->next() % (maxlen.Z * 1)) - (float)maxlen.Z / 2
421 (float)(ps->next() % (maxlen.X * 1)) - (float)maxlen.X / 2,
422 (float)(ps->next() % (maxlen.Y * 1)) - (float)maxlen.Y / 2,
423 (float)(ps->next() % (maxlen.Z * 1)) - (float)maxlen.Z / 2
427 // Do not make large caves that are above ground.
428 // It is only necessary to check the startpoint and endpoint.
430 v3s16 orpi(orp.X, orp.Y, orp.Z);
431 v3s16 veci(vec.X, vec.Y, vec.Z);
434 p = orpi + veci + of + rs / 2;
435 if (p.Z >= node_min.Z && p.Z <= node_max.Z &&
436 p.X >= node_min.X && p.X <= node_max.X) {
437 u32 index = (p.Z - node_min.Z) * mg->ystride + (p.X - node_min.X);
438 s16 h = mg->ridge_heightmap[index];
441 } else if (p.Y > water_level) {
442 return; // If it's not in our heightmap, use a simple heuristic
445 p = orpi + of + rs / 2;
446 if (p.Z >= node_min.Z && p.Z <= node_max.Z &&
447 p.X >= node_min.X && p.X <= node_max.X) {
448 u32 index = (p.Z - node_min.Z) * mg->ystride + (p.X - node_min.X);
449 s16 h = mg->ridge_heightmap[index];
452 } else if (p.Y > water_level) {
457 vec += main_direction;
462 else if (rp.X >= ar.X)
465 if (rp.Y < route_y_min)
467 else if (rp.Y >= route_y_max)
468 rp.Y = route_y_max - 1;
472 else if (rp.Z >= ar.Z)
477 float veclen = vec.getLength();
481 // Every second section is rough
482 bool randomize_xz = (ps->range(1, 2) == 1);
484 // Make a ravine every once in a while if it's long enough
485 //float xylen = vec.X * vec.X + vec.Z * vec.Z;
486 //disable ravines for now
487 bool is_ravine = false; //(xylen > 500.0) && !large_cave && (ps->range(1, 8) == 1);
490 for (float f = 0; f < 1.0; f += 1.0 / veclen)
491 carveRoute(vec, f, randomize_xz, is_ravine);
497 void CaveV7::carveRoute(v3f vec, float f, bool randomize_xz, bool is_ravine) {
498 MapNode airnode(CONTENT_AIR);
499 MapNode waternode(c_water_source);
500 MapNode lavanode(c_lava_source);
502 v3s16 startp(orp.X, orp.Y, orp.Z);
505 float nval = NoisePerlin3D(np_caveliquids, startp.X,
506 startp.Y, startp.Z, mg->seed);
507 MapNode liquidnode = nval < 0.40 ? lavanode : waternode;
509 v3f fp = orp + vec * f;
510 fp.X += 0.1 * ps->range(-10, 10);
511 fp.Z += 0.1 * ps->range(-10, 10);
512 v3s16 cp(fp.X, fp.Y, fp.Z);
517 d0 += ps->range(-1, 1);
518 d1 += ps->range(-1, 1);
521 bool flat_cave_floor = !large_cave && ps->range(0, 2) == 2;
522 bool should_make_cave_hole = ps->range(1, 10) == 1;
524 for (s16 z0 = d0; z0 <= d1; z0++) {
525 s16 si = rs / 2 - MYMAX(0, abs(z0) - rs / 7 - 1);
526 for (s16 x0 = -si - ps->range(0,1); x0 <= si - 1 + ps->range(0,1); x0++) {
527 s16 maxabsxz = MYMAX(abs(x0), abs(z0));
529 s16 si2 = is_ravine ? MYMIN(ps->range(25, 26), ar.Y) :
530 rs / 2 - MYMAX(0, maxabsxz - rs / 7 - 1);
532 for (s16 y0 = -si2; y0 <= si2; y0++) {
533 // Make better floors in small caves
534 if(flat_cave_floor && y0 <= -rs/2 && rs<=7)
537 if (large_cave_is_flat) {
538 // Make large caves not so tall
539 if (rs > 7 && abs(y0) >= rs / 3)
543 v3s16 p(cp.X + x0, cp.Y + y0, cp.Z + z0);
546 if (!is_ravine && mg->heightmap && should_make_cave_hole &&
547 p.X <= node_max.X && p.Z <= node_max.Z) {
548 int maplen = node_max.X - node_min.X + 1;
549 int idx = (p.Z - node_min.Z) * maplen + (p.X - node_min.X);
550 if (p.Y >= mg->heightmap[idx] - 2)
554 if (vm->m_area.contains(p) == false)
557 u32 i = vm->m_area.index(p);
559 // Don't replace air, water, lava, or ice
560 content_t c = vm->m_data[i].getContent();
561 if (!ndef->get(c).is_ground_content || c == CONTENT_AIR ||
562 c == c_water_source || c == c_lava_source || c == c_ice)
566 int full_ymin = node_min.Y - MAP_BLOCKSIZE;
567 int full_ymax = node_max.Y + MAP_BLOCKSIZE;
569 if (flooded && full_ymin < water_level && full_ymax > water_level)
570 vm->m_data[i] = (p.Y <= water_level) ? waternode : airnode;
571 else if (flooded && full_ymax < water_level)
572 vm->m_data[i] = (p.Y < startp.Y - 4) ? liquidnode : airnode;
574 vm->m_data[i] = airnode;
576 if (c == CONTENT_IGNORE)
579 vm->m_data[i] = airnode;
580 vm->m_flags[i] |= VMANIP_FLAG_CAVE;
588 ///////////////////////////////////////// Caves V5
591 CaveV5::CaveV5(MapgenV5 *mg, PseudoRandom *ps) {
594 this->ndef = mg->ndef;
595 this->water_level = mg->water_level;
597 this->c_water_source = mg->c_water_source;
598 this->c_lava_source = mg->c_lava_source;
599 this->c_ice = mg->c_ice;
600 this->np_caveliquids = &nparams_caveliquids;
602 dswitchint = ps->range(1, 14);
603 flooded = ps->range(1, 2) == 2;
605 part_max_length_rs = ps->range(2, 4);
606 tunnel_routepoints = ps->range(5, ps->range(15, 30));
607 min_tunnel_diameter = 5;
608 max_tunnel_diameter = ps->range(7, ps->range(8, 24));
610 large_cave_is_flat = (ps->range(0, 1) == 0);
614 void CaveV5::makeCave(v3s16 nmin, v3s16 nmax, int max_stone_height) {
617 main_direction = v3f(0, 0, 0);
619 // Allowed route area size in nodes
620 ar = node_max - node_min + v3s16(1, 1, 1);
621 // Area starting point in nodes
625 //(this should be more than the maximum radius of the tunnel)
627 s16 more = MYMAX(MAP_BLOCKSIZE - max_tunnel_diameter / 2 - insure, 1);
628 ar += v3s16(1,0,1) * more * 2;
629 of -= v3s16(1,0,1) * more;
632 // Allow half a diameter + 7 over stone surface
633 route_y_max = -of.Y + max_stone_y + max_tunnel_diameter / 2 + 7;
635 // Limit maximum to area
636 route_y_max = rangelim(route_y_max, 0, ar.Y - 1);
639 if (node_min.Y < water_level && node_max.Y > water_level) {
640 min = water_level - max_tunnel_diameter/3 - of.Y;
641 route_y_max = water_level + max_tunnel_diameter/3 - of.Y;
643 route_y_min = ps->range(min, min + max_tunnel_diameter);
644 route_y_min = rangelim(route_y_min, 0, route_y_max);
646 s16 route_start_y_min = route_y_min;
647 s16 route_start_y_max = route_y_max;
649 route_start_y_min = rangelim(route_start_y_min, 0, ar.Y - 1);
650 route_start_y_max = rangelim(route_start_y_max, route_start_y_min, ar.Y - 1);
652 // Randomize starting position
654 (float)(ps->next() % ar.X) + 0.5,
655 (float)(ps->range(route_start_y_min, route_start_y_max)) + 0.5,
656 (float)(ps->next() % ar.Z) + 0.5
659 // Add generation notify begin event
660 v3s16 abs_pos(of.X + orp.X, of.Y + orp.Y, of.Z + orp.Z);
661 GenNotifyType notifytype = GENNOTIFY_LARGECAVE_BEGIN;
662 mg->gennotify.addEvent(notifytype, abs_pos);
664 // Generate some tunnel starting from orp
665 for (u16 j = 0; j < tunnel_routepoints; j++)
666 makeTunnel(j % dswitchint == 0);
668 // Add generation notify end event
669 abs_pos = v3s16(of.X + orp.X, of.Y + orp.Y, of.Z + orp.Z);
670 notifytype = GENNOTIFY_LARGECAVE_END;
671 mg->gennotify.addEvent(notifytype, abs_pos);
675 void CaveV5::makeTunnel(bool dirswitch) {
678 s16 min_d = min_tunnel_diameter;
679 s16 max_d = max_tunnel_diameter;
680 rs = ps->range(min_d, max_d);
684 rs * part_max_length_rs,
685 rs * part_max_length_rs / 2,
686 rs * part_max_length_rs
690 // Jump downward sometimes
692 (float)(ps->next() % (maxlen.X * 1)) - (float)maxlen.X / 2,
693 (float)(ps->next() % (maxlen.Y * 1)) - (float)maxlen.Y / 2,
694 (float)(ps->next() % (maxlen.Z * 1)) - (float)maxlen.Z / 2
697 // Do not make large caves that are above ground.
698 // It is only necessary to check the startpoint and endpoint.
699 v3s16 orpi(orp.X, orp.Y, orp.Z);
700 v3s16 veci(vec.X, vec.Y, vec.Z);
703 p = orpi + veci + of + rs / 2;
704 if (p.Z >= node_min.Z && p.Z <= node_max.Z &&
705 p.X >= node_min.X && p.X <= node_max.X) {
706 u32 index = (p.Z - node_min.Z) * mg->ystride + (p.X - node_min.X);
707 s16 h = mg->heightmap[index];
710 } else if (p.Y > water_level) {
711 return; // If it's not in our heightmap, use a simple heuristic
714 p = orpi + of + rs / 2;
715 if (p.Z >= node_min.Z && p.Z <= node_max.Z &&
716 p.X >= node_min.X && p.X <= node_max.X) {
717 u32 index = (p.Z - node_min.Z) * mg->ystride + (p.X - node_min.X);
718 s16 h = mg->heightmap[index];
721 } else if (p.Y > water_level) {
725 vec += main_direction;
730 else if (rp.X >= ar.X)
733 if (rp.Y < route_y_min)
735 else if (rp.Y >= route_y_max)
736 rp.Y = route_y_max - 1;
740 else if (rp.Z >= ar.Z)
745 float veclen = vec.getLength();
749 // Every second section is rough
750 bool randomize_xz = (ps->range(1, 2) == 1);
752 // Make a ravine every once in a while if it's long enough
753 //float xylen = vec.X * vec.X + vec.Z * vec.Z;
754 //disable ravines for now
755 bool is_ravine = false; //(xylen > 500.0) && !large_cave && (ps->range(1, 8) == 1);
758 for (float f = 0; f < 1.0; f += 1.0 / veclen)
759 carveRoute(vec, f, randomize_xz, is_ravine);
765 void CaveV5::carveRoute(v3f vec, float f, bool randomize_xz, bool is_ravine) {
766 MapNode airnode(CONTENT_AIR);
767 MapNode waternode(c_water_source);
768 MapNode lavanode(c_lava_source);
770 v3s16 startp(orp.X, orp.Y, orp.Z);
773 float nval = NoisePerlin3D(np_caveliquids, startp.X,
774 startp.Y, startp.Z, mg->seed);
775 MapNode liquidnode = nval < 0.40 ? lavanode : waternode;
777 v3f fp = orp + vec * f;
778 fp.X += 0.1 * ps->range(-10, 10);
779 fp.Z += 0.1 * ps->range(-10, 10);
780 v3s16 cp(fp.X, fp.Y, fp.Z);
785 d0 += ps->range(-1, 1);
786 d1 += ps->range(-1, 1);
789 bool should_make_cave_hole = ps->range(1, 10) == 1;
791 for (s16 z0 = d0; z0 <= d1; z0++) {
792 s16 si = rs / 2 - MYMAX(0, abs(z0) - rs / 7 - 1);
793 for (s16 x0 = -si - ps->range(0,1); x0 <= si - 1 + ps->range(0,1); x0++) {
794 s16 maxabsxz = MYMAX(abs(x0), abs(z0));
796 s16 si2 = is_ravine ? MYMIN(ps->range(25, 26), ar.Y) :
797 rs / 2 - MYMAX(0, maxabsxz - rs / 7 - 1);
799 for (s16 y0 = -si2; y0 <= si2; y0++) {
800 if (large_cave_is_flat) {
801 // Make large caves not so tall
802 if (rs > 7 && abs(y0) >= rs / 3)
806 v3s16 p(cp.X + x0, cp.Y + y0, cp.Z + z0);
809 if (!is_ravine && mg->heightmap && should_make_cave_hole &&
810 p.X <= node_max.X && p.Z <= node_max.Z) {
811 int maplen = node_max.X - node_min.X + 1;
812 int idx = (p.Z - node_min.Z) * maplen + (p.X - node_min.X);
813 if (p.Y >= mg->heightmap[idx] - 2)
817 if (vm->m_area.contains(p) == false)
820 u32 i = vm->m_area.index(p);
822 // Don't replace air, water, lava, or ice
823 content_t c = vm->m_data[i].getContent();
824 if (!ndef->get(c).is_ground_content || c == CONTENT_AIR ||
825 c == c_water_source || c == c_lava_source || c == c_ice)
828 int full_ymin = node_min.Y - MAP_BLOCKSIZE;
829 int full_ymax = node_max.Y + MAP_BLOCKSIZE;
831 if (flooded && full_ymin < water_level && full_ymax > water_level)
832 vm->m_data[i] = (p.Y <= water_level) ? waternode : airnode;
833 else if (flooded && full_ymax < water_level)
834 vm->m_data[i] = (p.Y < startp.Y - 4) ? liquidnode : airnode;
836 vm->m_data[i] = airnode;