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 CavesV6::makeCave(MMVManip *vm, v3s16 nmin, v3s16 nmax,
PseudoRandom *ps, PseudoRandom *ps2,
bool is_large_cave, int max_stone_height, s16 *heightmap)
{
assert(vm);
assert(ps);
assert(ps2);
this->vm = vm;
this->ps = ps;
this->ps2 = ps2;
this->node_min = nmin;
this->node_max = nmax;
this->heightmap = heightmap;
this->large_cave = is_large_cave;
this->ystride = nmax.X - nmin.X + 1;
// Set initial parameters from randomness
min_tunnel_diameter = 2;
max_tunnel_diameter = ps->range(2, 6);
int dswitchint = ps->range(1, 14);
if (large_cave) {
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));
} else {
part_max_length_rs = ps->range(2, 9);
tunnel_routepoints = ps->range(10, ps->range(15, 30));
}
large_cave_is_flat = (ps->range(0, 1) == 0);
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)
const s16 max_spread_amount = MAP_BLOCKSIZE;
const s16 insure = 10;
s16 more = MYMAX(max_spread_amount - 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_height + max_tunnel_diameter / 2 + 7;
// Limit maximum to area
route_y_max = rangelim(route_y_max, 0, ar.Y - 1);
if (large_cave) {
s16 minpos = 0;
if (node_min.Y < water_level && node_max.Y > water_level) {
minpos = water_level - max_tunnel_diameter / 3 - of.Y;
route_y_max = water_level + max_tunnel_diameter / 3 - of.Y;
}
route_y_min = ps->range(minpos, minpos + 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.Z = (float)(ps->next() % ar.Z) + 0.5f;
orp.Y = (float)(ps->range(route_start_y_min, route_start_y_max)) + 0.5f;
orp.X = (float)(ps->next() % ar.X) + 0.5f;
// Add generation notify begin event
if (gennotify != NULL) {
v3s16 abs_pos(of.X + orp.X, of.Y + orp.Y, of.Z + orp.Z);
GenNotifyType notifytype = large_cave ?
GENNOTIFY_LARGECAVE_BEGIN : GENNOTIFY_CAVE_BEGIN;
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
if (gennotify != NULL) {
v3s16 abs_pos(of.X + orp.X, of.Y + orp.Y, of.Z + orp.Z);
GenNotifyType notifytype = large_cave ?
GENNOTIFY_LARGECAVE_END : GENNOTIFY_CAVE_END;
gennotify->addEvent(notifytype, abs_pos);
}
}
