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Caverns: Remove unnecessary liquid excavation

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Also disable CavesRandomWalk at a safer distance from caverns.

Excavating liquids in cavern code is unnecessary as in practice we are already
successfully disabling the generation of liquid caves that could intersect
with caverns and cause excessive amounts of spreading liquids in caverns.

However to be safer this commit now disables liquid caves at a larger distance
from caverns, to compensate for liquid caves being able to generate up to a
mapblock beyond a mapchunk border.

Not excavating liquids in cavern code also allows a feature i am working on in
experimental new core mapgens, but also allows for more flexibility in future.
This commit is contained in:
paramat 2017-05-11 03:39:43 +01:00
parent 582ee15d8e
commit fd32005b0f
3 changed files with 20 additions and 18 deletions
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6
src/mapgen_v7.cpp
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@ -292,12 +292,12 @@ void MapgenV7::makeChunk(BlockMakeData *data)
// Generate caverns, tunnels and classic caves
if (flags & MG_CAVES) {
bool has_cavern = false;
bool near_cavern = false;
// Generate caverns
if (spflags & MGV7_CAVERNS)
has_cavern = generateCaverns(stone_surface_max_y);
near_cavern = generateCaverns(stone_surface_max_y);
// Generate tunnels and classic caves
if (has_cavern)
if (near_cavern)
// Disable classic caves in this mapchunk by setting
// 'large cave depth' to world base. Avoids excessive liquid in
// large caverns and floating blobs of overgenerated liquid.