v3s16 random_turn(PseudoRandom &random, v3s16 olddir)
{
int turn = random.range(0, 2);
v3s16 dir;
if (turn == 0)
// Go straight
dir = olddir;
else if (turn == 1)
// Turn right
dir = turn_xz(olddir, 0);
else
// Turn left
dir = turn_xz(olddir, 1);
return dir;
}
void DungeonGen::makeCorridor(v3s16 doorplace,
v3s16 doordir, v3s16 &result_place, v3s16 &result_dir)
{
makeHole(doorplace);
v3s16 p0 = doorplace;
v3s16 dir = doordir;
u32 length;
/*if (random.next() % 2)
length = random.range(1, 13);
else
length = random.range(1, 6);*/
length = random.range(1, 13);
u32 partlength = random.range(1, 13);
u32 partcount = 0;
s16 make_stairs = 0;
if (random.next() % 2 == 0 && partlength >= 3)
make_stairs = random.next() % 2 ? 1 : -1;
for (u32 i = 0; i < length; i++) {
v3s16 p = p0 + dir;
if (partcount != 0)
p.Y += make_stairs;
if (vmanip->m_area.contains(p) == true &&
vmanip->m_area.contains(p + v3s16(0, 1, 0)) == true) {
if (make_stairs) {
makeFill(p + v3s16(-1, -1, -1), v3s16(3, 5, 3),
VMANIP_FLAG_DUNGEON_UNTOUCHABLE, MapNode(cid_cobble), 0);
makeHole(p);
makeHole(p - dir);
// TODO: fix stairs code so it works 100% (quite difficult)
// exclude stairs from the bottom step
if (((make_stairs == 1) && i != 0) ||
((make_stairs == -1) && i != length - 1)) {
// rotate face 180 deg if making stairs backwards
int facedir = dir_to_facedir(dir * make_stairs);
u32 vi = vmanip->m_area.index(p.X - dir.X, p.Y - 1, p.Z - dir.Z);
if (vmanip->m_data[vi].getContent() == cid_cobble)
vmanip->m_data[vi] = MapNode(cid_cobblestair, 0, facedir);
vi = vmanip->m_area.index(p.X, p.Y, p.Z);
if (vmanip->m_data[vi].getContent() == cid_cobble)
vmanip->m_data[vi] = MapNode(cid_cobblestair, 0, facedir);
}
} else {
makeFill(p + v3s16(-1, -1, -1), v3s16(3, 4, 3),
VMANIP_FLAG_DUNGEON_UNTOUCHABLE, MapNode(cid_cobble), 0);
makeHole(p);
}
p0 = p;
} else {
// Can't go here, turn away
dir = turn_xz(dir, random.range(0, 1));
make_stairs = -make_stairs;
partcount = 0;
partlength = random.range(1, length);
continue;
}
partcount++;
if (partcount >= partlength) {
partcount = 0;
dir = random_turn(random, dir);
partlength = random.range(1,length);
make_stairs = 0;
if (random.next() % 2 == 0 && partlength >= 3)
make_stairs = random.next() % 2 ? 1 : -1;
}
}
result_place = p0;
result_dir = dir;
}