Mgvalleys: Make river depth variation and humidity drop optional (#7532)

[oweals/minetest.git] / src / mapgen / mg_biome.cpp

diff --git a/src/mapgen/mg_biome.cpp b/src/mapgen/mg_biome.cpp
index 42f762709a156314ae201c469d5234e37f8a60e6..7f717011c307a2fdf8fc1f5694a797581ef611e8 100644 (file)
--- a/src/mapgen/mg_biome.cpp
+++ b/src/mapgen/mg_biome.cpp
@@ -192,7 +192,12 @@ BiomeGenOriginal::BiomeGenOriginal(BiomeManager *biomemgr,
 
        heatmap  = noise_heat->result;
        humidmap = noise_humidity->result;
+
        biomemap = new biome_t[m_csize.X * m_csize.Z];
+       // Initialise with the ID of 'BIOME_NONE' so that cavegen can get the
+       // fallback biome when biome generation (which calculates the biomemap IDs)
+       // is disabled.
+       memset(biomemap, 0, sizeof(biome_t) * m_csize.X * m_csize.Z);
 }
 
 BiomeGenOriginal::~BiomeGenOriginal()