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-rw-r--r--src/map.cpp4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/map.cpp b/src/map.cpp
index 6331055aa..f5c4a5e02 100644
--- a/src/map.cpp
+++ b/src/map.cpp
@@ -1708,11 +1708,11 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
}
}
- if (max_node_level != liquid_level) {
+ u8 viscosity = content_features(liquid_kind).liquid_viscosity;
+ if (viscosity > 1 && max_node_level != liquid_level) {
// amount to gain, limited by viscosity
// must be at least 1 in absolute value
s8 level_inc = max_node_level - liquid_level;
- u8 viscosity = content_features(liquid_kind).liquid_viscosity;
if (level_inc < -viscosity || level_inc > viscosity)
new_node_level = liquid_level + level_inc/viscosity;
else if (level_inc < 0)