Mgv7: Limit pseudorandom caves to surface mapchunk or below

To avoid bright caves at mapchunk borders when generating mapchunks upwards

diff --git a/src/mapgen_v7.cpp b/src/mapgen_v7.cpp
index 24867623cec11b551ce329d9f8016e89ded8a473..9e3e3f1a8699e60776e1106a1d223b3357fb9ea1 100644 (file)
--- a/src/mapgen_v7.cpp
+++ b/src/mapgen_v7.cpp
@@ -912,6 +912,9 @@ void MapgenV7::generateCaves(s16 max_stone_y)
                }
        }
 
+       if (node_min.Y >= water_level)
+               return;
+
        PseudoRandom ps(blockseed + 21343);
        u32 bruises_count = ps.range(0, 2);
        for (u32 i = 0; i < bruises_count; i++) {