Mapgen: Use decoration sidelen 16 for jungletrees and junglegrass

Currently jungletrees and junglegrass use sidelen 80 for simplicity,
but this results in a more uneven distribution of decorations. A more
even distribution helps keep rainforest darker with a more unbroken
canopy.
This is also more consistent. 80 is based on the default mapchunk
size, all other decorations use sidelen 16 or smaller to divide into
any mapchunk size.

diff --git a/mods/default/mapgen.lua b/mods/default/mapgen.lua
index d526b767a165b2038b0002956a3074cf7e7a8632..0fabb2ed09b32a70c1bc6ba4e538fa856dcfdde7 100644 (file)
--- a/mods/default/mapgen.lua
+++ b/mods/default/mapgen.lua
@@ -1324,7 +1324,7 @@ function default.register_decorations()
        minetest.register_decoration({
                deco_type = "schematic",
                place_on = {"default:dirt_with_rainforest_litter", "default:dirt"},
-               sidelen = 80,
+               sidelen = 16,
                fill_ratio = 0.1,
                biomes = {"rainforest", "rainforest_swamp"},
                y_min = -1,
@@ -1337,7 +1337,7 @@ function default.register_decorations()
        minetest.register_decoration({
                deco_type = "schematic",
                place_on = {"default:dirt_with_rainforest_litter", "default:dirt"},
-               sidelen = 80,
+               sidelen = 16,
                fill_ratio = 0.005,
                biomes = {"rainforest", "rainforest_swamp"},
                y_min = 1,
@@ -1598,7 +1598,7 @@ function default.register_decorations()
        minetest.register_decoration({
                deco_type = "simple",
                place_on = {"default:dirt_with_rainforest_litter"},
-               sidelen = 80,
+               sidelen = 16,
                fill_ratio = 0.1,
                biomes = {"rainforest"},
                y_min = 1,