Changed some default parameters

Map centered by default
Base noise higher and less wide horizontally

noises.lua

@@ -3,10 +3,10 @@ local def_setting = mapgen_rivers.define_setting
 mapgen_rivers.noise_params = {
 	base = def_setting('np_base', 'noise', {
 		offset = 0,
-		scale = 200,
+		scale = 300,
 		seed = 2469,
 		octaves = 8,
-		spread = {x=4000, y=4000, z=4000},
+		spread = {x=2048, y=2048, z=2048},
 		persist = 0.6,
 		lacunarity = 2,
 	}),

settings.lua

@@ -41,7 +41,7 @@ end
 local def_setting = mapgen_rivers.define_setting
 
 mapgen_rivers.settings = {
-	center = def_setting('center', 'bool', false),
+	center = def_setting('center', 'bool', true),
 	blocksize = def_setting('blocksize', 'number', 12),
 	sea_level = tonumber(minetest.get_mapgen_setting('water_level')),
 	min_catchment = def_setting('min_catchment', 'number', 25),

settingtypes.txt

@@ -1,7 +1,7 @@
 # File containing all settings for 'mapgen_rivers' mod.
 
 #    Whether the map should be centered at x=0, z=0.
-mapgen_rivers_center (Center map) bool false
+mapgen_rivers_center (Center map) bool true
 
 #    Represents horizontal map scale. Every cell of the grid will be upscaled to
 #    a square of this size.
@@ -84,7 +84,7 @@ mapgen_rivers_tectonic_speed (Tectonic speed) float 70 0 10000
 #    Y level of terrain at a very large scale. Only used during pre-generation.
 #    X and Z axes correspond to map's X and Z directions, and Y axis is time.
 #    Successive XZ slices of this noise represent successive tectonic states.
-mapgen_rivers_np_base (Terrain base noise) noise_params_3d 0, 200, (4000, 4000, 4000), 2469, 8, 0.6, 2.0
+mapgen_rivers_np_base (Terrain base noise) noise_params_3d 0, 300, (2048, 2048, 2048), 2469, 8, 0.6, 2.0
 
 #    This noise will shear the terrain on the X axis,
 #    to break the regularity of the river grid.