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Biome API / cavegen: Add definable cave liquid for a biome (#7192)

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Add 'node_cave_liquid' as a new field in biome registration.
If field is absent cave liquids fall back to classic behaviour.
This commit is contained in:
Paramat 2018-04-05 17:21:41 +01:00 • committed by GitHub
parent 077f231111
commit 32d456bd2d
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8 changed files with 40 additions and 12 deletions
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24
src/mapgen/cavegen.cpp
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@ -279,7 +279,8 @@ CavesRandomWalk::CavesRandomWalk(
int water_level,
content_t water_source,
content_t lava_source,
int lava_depth)
int lava_depth,
BiomeGen *biomegen)
{
assert(ndef);
@ -289,6 +290,7 @@ CavesRandomWalk::CavesRandomWalk(
this->water_level = water_level;
this->np_caveliquids = &nparams_caveliquids;
this->lava_depth = lava_depth;
this->bmgn = biomegen;
c_water_source = water_source;
if (c_water_source == CONTENT_IGNORE)
@ -495,10 +497,22 @@ void CavesRandomWalk::carveRoute(v3f vec, float f, bool randomize_xz)
v3s16 startp(orp.X, orp.Y, orp.Z);
startp += of;
float nval = NoisePerlin3D(np_caveliquids, startp.X,
startp.Y, startp.Z, seed);
MapNode liquidnode = (nval < 0.40f && node_max.Y < lava_depth) ?
lavanode : waternode;
// Get biome at 'startp', use 'node_cave_liquid' if stated, otherwise
// fallback to classic behaviour.
MapNode liquidnode = CONTENT_IGNORE;
if (bmgn) {
Biome *biome = (Biome *)bmgn->calcBiomeAtPoint(startp);
if (biome->c_cave_liquid != CONTENT_IGNORE)
liquidnode = biome->c_cave_liquid;
}
if (liquidnode == CONTENT_IGNORE) {
float nval = NoisePerlin3D(np_caveliquids, startp.X,
startp.Y, startp.Z, seed);
liquidnode = (nval < 0.40f && node_max.Y < lava_depth) ?
lavanode : waternode;
}
v3f fp = orp + vec * f;
fp.X += 0.1f * ps->range(-10, 10);