#include "mapgen_v5.h"
#include "mapgen_v6.h"
#include "mapgen_v7.h"
-#include "mapgen_fractal.h"
#include "cavegen.h"
NoiseParams nparams_caveliquids(0, 1, v3f(150.0, 150.0, 150.0), 776, 3, 0.6, 2.0);
///////////////////////////////////////// Caves V5
-CaveV5::CaveV5(MapgenV5 *mg, PseudoRandom *ps)
+CaveV5::CaveV5(Mapgen *mg, PseudoRandom *ps)
{
this->mg = mg;
this->vm = mg->vm;
this->ndef = mg->ndef;
this->water_level = mg->water_level;
this->ps = ps;
- this->c_water_source = mg->c_water_source;
- this->c_lava_source = mg->c_lava_source;
- this->c_ice = mg->c_ice;
+ c_water_source = ndef->getId("mapgen_water_source");
+ c_lava_source = ndef->getId("mapgen_lava_source");
+ c_ice = ndef->getId("mapgen_ice");
this->np_caveliquids = &nparams_caveliquids;
+ this->ystride = mg->csize.X;
+
+ if (c_ice == CONTENT_IGNORE)
+ c_ice = CONTENT_AIR;
dswitchint = ps->range(1, 14);
flooded = ps->range(1, 2) == 2;
p = orpi + veci + of + rs / 2;
if (p.Z >= node_min.Z && p.Z <= node_max.Z &&
p.X >= node_min.X && p.X <= node_max.X) {
- u32 index = (p.Z - node_min.Z) * mg->ystride + (p.X - node_min.X);
+ u32 index = (p.Z - node_min.Z) * ystride + (p.X - node_min.X);
s16 h = mg->heightmap[index];
if (h < p.Y)
return;
p = orpi + of + rs / 2;
if (p.Z >= node_min.Z && p.Z <= node_max.Z &&
p.X >= node_min.X && p.X <= node_max.X) {
- u32 index = (p.Z - node_min.Z) * mg->ystride + (p.X - node_min.X);
+ u32 index = (p.Z - node_min.Z) * ystride + (p.X - node_min.X);
s16 h = mg->heightmap[index];
if (h < p.Y)
return;
float nval = NoisePerlin3D(np_caveliquids, startp.X,
startp.Y, startp.Z, mg->seed);
- MapNode liquidnode = nval < 0.40 ? lavanode : waternode;
+ MapNode liquidnode = (nval < 0.40 && node_max.Y < MGV5_LAVA_DEPTH) ?
+ lavanode : waternode;
v3f fp = orp + vec * f;
fp.X += 0.1 * ps->range(-10, 10);
}
}
}
-
-
-///////////////////////////////////////// Caves Fractal
-
-
-CaveFractal::CaveFractal(MapgenFractal *mg, PseudoRandom *ps)
-{
- this->mg = mg;
- this->vm = mg->vm;
- this->ndef = mg->ndef;
- this->water_level = mg->water_level;
- this->ps = ps;
- this->c_water_source = mg->c_water_source;
- this->c_lava_source = mg->c_lava_source;
- this->c_ice = mg->c_ice;
- this->np_caveliquids = &nparams_caveliquids;
-
- dswitchint = ps->range(1, 14);
- flooded = ps->range(1, 2) == 2;
-
- part_max_length_rs = ps->range(2, 4);
- tunnel_routepoints = ps->range(5, ps->range(15, 30));
- min_tunnel_diameter = 5;
- max_tunnel_diameter = ps->range(7, ps->range(8, 24));
-
- large_cave_is_flat = (ps->range(0, 1) == 0);
-}
-
-
-void CaveFractal::makeCave(v3s16 nmin, v3s16 nmax, int max_stone_height)
-{
- node_min = nmin;
- node_max = nmax;
- main_direction = v3f(0, 0, 0);
-
- // Allowed route area size in nodes
- ar = node_max - node_min + v3s16(1, 1, 1);
- // Area starting point in nodes
- of = node_min;
-
- // Allow a bit more
- //(this should be more than the maximum radius of the tunnel)
- s16 insure = 10;
- s16 more = MYMAX(MAP_BLOCKSIZE - max_tunnel_diameter / 2 - insure, 1);
- ar += v3s16(1,0,1) * more * 2;
- of -= v3s16(1,0,1) * more;
-
- route_y_min = 0;
- // Allow half a diameter + 7 over stone surface
- route_y_max = -of.Y + max_stone_y + max_tunnel_diameter / 2 + 7;
-
- // Limit maximum to area
- route_y_max = rangelim(route_y_max, 0, ar.Y - 1);
-
- s16 min = 0;
- if (node_min.Y < water_level && node_max.Y > water_level) {
- min = water_level - max_tunnel_diameter/3 - of.Y;
- route_y_max = water_level + max_tunnel_diameter/3 - of.Y;
- }
- route_y_min = ps->range(min, min + max_tunnel_diameter);
- route_y_min = rangelim(route_y_min, 0, route_y_max);
-
- s16 route_start_y_min = route_y_min;
- s16 route_start_y_max = route_y_max;
-
- route_start_y_min = rangelim(route_start_y_min, 0, ar.Y - 1);
- route_start_y_max = rangelim(route_start_y_max, route_start_y_min, ar.Y - 1);
-
- // Randomize starting position
- orp = v3f(
- (float)(ps->next() % ar.X) + 0.5,
- (float)(ps->range(route_start_y_min, route_start_y_max)) + 0.5,
- (float)(ps->next() % ar.Z) + 0.5
- );
-
- // Add generation notify begin event
- v3s16 abs_pos(of.X + orp.X, of.Y + orp.Y, of.Z + orp.Z);
- GenNotifyType notifytype = GENNOTIFY_LARGECAVE_BEGIN;
- mg->gennotify.addEvent(notifytype, abs_pos);
-
- // Generate some tunnel starting from orp
- for (u16 j = 0; j < tunnel_routepoints; j++)
- makeTunnel(j % dswitchint == 0);
-
- // Add generation notify end event
- abs_pos = v3s16(of.X + orp.X, of.Y + orp.Y, of.Z + orp.Z);
- notifytype = GENNOTIFY_LARGECAVE_END;
- mg->gennotify.addEvent(notifytype, abs_pos);
-}
-
-
-void CaveFractal::makeTunnel(bool dirswitch)
-{
- // Randomize size
- s16 min_d = min_tunnel_diameter;
- s16 max_d = max_tunnel_diameter;
- rs = ps->range(min_d, max_d);
- s16 rs_part_max_length_rs = rs * part_max_length_rs;
-
- v3s16 maxlen;
- maxlen = v3s16(
- rs_part_max_length_rs,
- rs_part_max_length_rs / 2,
- rs_part_max_length_rs
- );
-
- v3f vec;
- // Jump downward sometimes
- vec = v3f(
- (float)(ps->next() % maxlen.X) - (float)maxlen.X / 2,
- (float)(ps->next() % maxlen.Y) - (float)maxlen.Y / 2,
- (float)(ps->next() % maxlen.Z) - (float)maxlen.Z / 2
- );
-
- // Do not make caves that are above ground.
- // It is only necessary to check the startpoint and endpoint.
- v3s16 orpi(orp.X, orp.Y, orp.Z);
- v3s16 veci(vec.X, vec.Y, vec.Z);
- v3s16 p;
-
- p = orpi + veci + of + rs / 2;
- if (p.Z >= node_min.Z && p.Z <= node_max.Z &&
- p.X >= node_min.X && p.X <= node_max.X) {
- u32 index = (p.Z - node_min.Z) * mg->ystride + (p.X - node_min.X);
- s16 h = mg->heightmap[index];
- if (h < p.Y)
- return;
- } else if (p.Y > water_level) {
- return; // If it's not in our heightmap, use a simple heuristic
- }
-
- p = orpi + of + rs / 2;
- if (p.Z >= node_min.Z && p.Z <= node_max.Z &&
- p.X >= node_min.X && p.X <= node_max.X) {
- u32 index = (p.Z - node_min.Z) * mg->ystride + (p.X - node_min.X);
- s16 h = mg->heightmap[index];
- if (h < p.Y)
- return;
- } else if (p.Y > water_level) {
- return;
- }
-
- vec += main_direction;
-
- v3f rp = orp + vec;
- if (rp.X < 0)
- rp.X = 0;
- else if (rp.X >= ar.X)
- rp.X = ar.X - 1;
-
- if (rp.Y < route_y_min)
- rp.Y = route_y_min;
- else if (rp.Y >= route_y_max)
- rp.Y = route_y_max - 1;
-
- if (rp.Z < 0)
- rp.Z = 0;
- else if (rp.Z >= ar.Z)
- rp.Z = ar.Z - 1;
-
- vec = rp - orp;
-
- float veclen = vec.getLength();
- if (veclen < 0.05)
- veclen = 1.0;
-
- // Every second section is rough
- bool randomize_xz = (ps->range(1, 2) == 1);
-
- // Carve routes
- for (float f = 0; f < 1.0; f += 1.0 / veclen)
- carveRoute(vec, f, randomize_xz);
-
- orp = rp;
-}
-
-
-void CaveFractal::carveRoute(v3f vec, float f, bool randomize_xz)
-{
- MapNode airnode(CONTENT_AIR);
- MapNode waternode(c_water_source);
- MapNode lavanode(c_lava_source);
-
- v3s16 startp(orp.X, orp.Y, orp.Z);
- startp += of;
-
- float nval = NoisePerlin3D(np_caveliquids, startp.X,
- startp.Y, startp.Z, mg->seed);
- MapNode liquidnode = (nval < 0.40 && node_max.Y < MGFRACTAL_LAVA_DEPTH) ?
- lavanode : waternode;
-
- v3f fp = orp + vec * f;
- fp.X += 0.1 * ps->range(-10, 10);
- fp.Z += 0.1 * ps->range(-10, 10);
- v3s16 cp(fp.X, fp.Y, fp.Z);
-
- s16 d0 = -rs/2;
- s16 d1 = d0 + rs;
- if (randomize_xz) {
- d0 += ps->range(-1, 1);
- d1 += ps->range(-1, 1);
- }
-
- for (s16 z0 = d0; z0 <= d1; z0++) {
- s16 si = rs / 2 - MYMAX(0, abs(z0) - rs / 7 - 1);
- for (s16 x0 = -si - ps->range(0,1); x0 <= si - 1 + ps->range(0,1); x0++) {
- s16 maxabsxz = MYMAX(abs(x0), abs(z0));
-
- s16 si2 = rs / 2 - MYMAX(0, maxabsxz - rs / 7 - 1);
-
- for (s16 y0 = -si2; y0 <= si2; y0++) {
- if (large_cave_is_flat) {
- // Make large caves not so tall
- if (rs > 7 && abs(y0) >= rs / 3)
- continue;
- }
-
- v3s16 p(cp.X + x0, cp.Y + y0, cp.Z + z0);
- p += of;
-
- if (vm->m_area.contains(p) == false)
- continue;
-
- u32 i = vm->m_area.index(p);
- content_t c = vm->m_data[i].getContent();
- if (!ndef->get(c).is_ground_content)
- continue;
-
- int full_ymin = node_min.Y - MAP_BLOCKSIZE;
- int full_ymax = node_max.Y + MAP_BLOCKSIZE;
-
- if (flooded && full_ymin < water_level &&
- full_ymax > water_level)
- vm->m_data[i] = (p.Y <= water_level) ?
- waternode : airnode;
- else if (flooded && full_ymax < water_level)
- vm->m_data[i] = (p.Y < startp.Y - 4) ?
- liquidnode : airnode;
- else
- vm->m_data[i] = airnode;
- }
- }
- }
-}
projects / minetest.git / blobdiff