Marram grass: Fix noise flags to make 2D noise 'eased' (#2493)

Increase noise resolution from 4 to 2 nodes for a higher quality
distribution.
Retune noise parameters to compensate for using eased noise.

diff --git a/mods/default/mapgen.lua b/mods/default/mapgen.lua
index 6d68afcf0f773c9cfba1a8cc05222d71f196bd94..a361f894ecda4f2f54bf3410e76b7de4c6ea1ce0 100644 (file)
--- a/mods/default/mapgen.lua
+++ b/mods/default/mapgen.lua
@@ -2348,13 +2348,13 @@ function default.register_decorations()
                place_on = {"default:sand"},
                sidelen = 4,
                noise_params = {
-                       offset = -0.4,
-                       scale = 3.0,
+                       offset = -0.7,
+                       scale = 4.0,
                        spread = {x = 16, y = 16, z = 16},
                        seed = 513337,
                        octaves = 1,
-                       persist = 0.5,
-                       flags = "absvalue"
+                       persist = 0.0,
+                       flags = "absvalue, eased"
                },
                biomes = {"coniferous_forest_dunes", "grassland_dunes"},
                y_max = 6,