Cavegen: Wider tunnels in mgflat, mgfractal, mgvalleys

As mgv7 is now the default mapgen i re-checked its tunnel width on request,
discovered they needed to be wider, and have made this change.
This commit widens the identical 3D noise tunnels in the other mapgens in
exactly the same way.

5 files changed, 9 insertions, 9 deletions

diff --git a/builtin/settingtypes.txt b/builtin/settingtypes.txt
index df4484750..ea0ca9992 100644
--- a/builtin/settingtypes.txt
+++ b/builtin/settingtypes.txt
@@ -1016,7 +1016,7 @@ mgflat_ground_level (Mapgen flat ground level) int 8
 mgflat_large_cave_depth (Mapgen flat large cave depth) int -33
 
 #    Controls width of tunnels, a smaller value creates wider tunnels.
-mgflat_cave_width (Mapgen flat cave width) float 0.2
+mgflat_cave_width (Mapgen flat cave width) float 0.09
 
 #    Terrain noise threshold for lakes.
 #    Controls proportion of world area covered by lakes.
@@ -1046,7 +1046,7 @@ mgflat_np_cave2 (Mapgen flat cave2 noise parameters) noise_params 0, 12, (67, 67
 [***Mapgen fractal]
 
 #    Controls width of tunnels, a smaller value creates wider tunnels.
-mgfractal_cave_width (Mapgen fractal cave width) float 0.2
+mgfractal_cave_width (Mapgen fractal cave width) float 0.09
 
 #    Choice of 18 fractals from 9 formulas.
 #    1 = 4D "Roundy" mandelbrot set.
@@ -1148,7 +1148,7 @@ mgvalleys_river_size (River Size) int 5
 mgvalleys_water_features (Water Features) int 0
 
 #    Controls width of tunnels, a smaller value creates wider tunnels.
-mgvalleys_cave_width (Cave width) float 0.2
+mgvalleys_cave_width (Cave width) float 0.09
 
 # Noise parameters
 [****Noises]
diff --git a/minetest.conf.example b/minetest.conf.example
index bdd28cda6..ff365466f 100644
--- a/minetest.conf.example
+++ b/minetest.conf.example
@@ -1316,7 +1316,7 @@
 
 #    Controls width of tunnels, a smaller value creates wider tunnels.
 #    type: float
-# mgflat_cave_width = 0.2
+# mgflat_cave_width = 0.09
 
 #    Terrain noise threshold for lakes.
 #    Controls proportion of world area covered by lakes.
@@ -1357,7 +1357,7 @@
 
 #    Controls width of tunnels, a smaller value creates wider tunnels.
 #    type: float
-# mgfractal_cave_width = 0.2
+# mgfractal_cave_width = 0.09
 
 #    Choice of 18 fractals from 9 formulas.
 #    1 = 4D "Roundy" mandelbrot set.
@@ -1482,7 +1482,7 @@
 
 #    Controls width of tunnels, a smaller value creates wider tunnels.
 #    type: float
-# mgvalleys_cave_width = 0.2
+# mgvalleys_cave_width = 0.09
 
 ##### Noises
 
diff --git a/src/mapgen_flat.cpp b/src/mapgen_flat.cpp
index 2c1715e61..cc120b580 100644
--- a/src/mapgen_flat.cpp
+++ b/src/mapgen_flat.cpp
@@ -82,7 +82,7 @@ MapgenFlatParams::MapgenFlatParams()
 	spflags          = 0;
 	ground_level     = 8;
 	large_cave_depth = -33;
-	cave_width       = 0.2;
+	cave_width       = 0.09;
 	lake_threshold   = -0.45;
 	lake_steepness   = 48.0;
 	hill_threshold   = 0.45;
diff --git a/src/mapgen_fractal.cpp b/src/mapgen_fractal.cpp
index 0951a0afa..a6ed18ae7 100644
--- a/src/mapgen_fractal.cpp
+++ b/src/mapgen_fractal.cpp
@@ -84,7 +84,7 @@ MapgenFractal::~MapgenFractal()
 MapgenFractalParams::MapgenFractalParams()
 {
 	spflags    = 0;
-	cave_width = 0.2;
+	cave_width = 0.09;
 	fractal    = 1;
 	iterations = 11;
 	scale      = v3f(4096.0, 1024.0, 4096.0);
diff --git a/src/mapgen_valleys.cpp b/src/mapgen_valleys.cpp
index 456e6aa1a..ce7a95329 100644
--- a/src/mapgen_valleys.cpp
+++ b/src/mapgen_valleys.cpp
@@ -143,7 +143,7 @@ MapgenValleysParams::MapgenValleysParams()
 	river_depth        = 4;  // How deep to carve river channels.
 	river_size         = 5;  // How wide to make rivers.
 	water_features     = 0;  // How often water will occur in caves.
-	cave_width         = 0.2;
+	cave_width         = 0.09;
 
 	np_cave1              = NoiseParams(0,     12,   v3f(61,   61,   61),   52534, 3, 0.5,   2.0);
 	np_cave2              = NoiseParams(0,     12,   v3f(67,   67,   67),   10325, 3, 0.5,   2.0);