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changed perlin settings for humidity layer to match deserts

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Thanks to paramat for spotting this!
This commit is contained in:
Vanessa Ezekowitz 2013-02-03 03:01:44 -05:00
parent 1554d8fcf4
commit a86c52cfa8
2 changed files with 24 additions and 16 deletions
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32
API.txt
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@ -534,21 +534,29 @@ Humidity Mapping
Last but not least is a moisture/humidity map. Like the temperature map Last but not least is a moisture/humidity map. Like the temperature map
above, Perlin values can be tested to determine the approximate humidity of above, Perlin values can be tested to determine the approximate humidity of
the *air* in the area. the *air* in the area. This humidity map is basically the perlin layer used
for deserts.
A value of -1 equates to 100% humidity (basically, it would be a thick fog A value of -1.0 is very moist (basically a thick fog, if it could be seen), a
if it could be seen), a value of 0 is 50%, and a value of +1 is 0% (dry as a value of +0.4 represents the edge of a desert as usually seen in the game, and
bone). a value of +1.0 is as dry as a bone.
This does not check for nearby water or desert area, just general air This does not check for nearby water, just general air humidity, and that
humidity, and that being the case, nearby ground does not affect the being the case, nearby ground does not affect the reported humidity of a
reported humidity of a region (because this isn't yet possible to calculate region (because this isn't yet possible to calculate yet). Use the near_nodes
yet). and avoid_nodes parameters and their related options to check for water and
such.
The Perlin values use for this layer are: The Perlin values use for this layer are:
humidity_seeddiff = 1234 humidity_seeddiff = 9130
humidity_octaves = 1 humidity_octaves = 3
humidity_persistence = 0.5 humidity_persistence = 0.5
humidity_scale = 150 humidity_scale = 250
And this particular one is mapped slightly differently from the others:
noise3 = perlin3:get2d({x=p_top.x+150, y=p_top.z+50})
(Note the +150 and +50 offsets)

8
plants_lib/init.lua
View File

@ -24,10 +24,10 @@ local temperature_octaves = 3
local temperature_persistence = 0.5 local temperature_persistence = 0.5
local temperature_scale = 150 local temperature_scale = 150
local humidity_seeddiff = 1234 local humidity_seeddiff = 9130
local humidity_octaves = 1 local humidity_octaves = 3
local humidity_persistence = 0.5 local humidity_persistence = 0.5
local humidity_scale = 150 local humidity_scale = 250
-- Local functions -- Local functions
@ -89,7 +89,7 @@ function plantslib:search_for_surfaces(minp, maxp, biomedef, node_or_function_or
local perlin3 = minetest.env:get_perlin(humidity_seeddiff, humidity_octaves, humidity_persistence, humidity_scale) local perlin3 = minetest.env:get_perlin(humidity_seeddiff, humidity_octaves, humidity_persistence, humidity_scale)
local noise1 = perlin1:get2d({x=p_top.x, y=p_top.z}) local noise1 = perlin1:get2d({x=p_top.x, y=p_top.z})
local noise2 = perlin2:get2d({x=p_top.x, y=p_top.z}) local noise2 = perlin2:get2d({x=p_top.x, y=p_top.z})
local noise3 = perlin3:get2d({x=p_top.x, y=p_top.z}) local noise3 = perlin3:get2d({x=p_top.x+150, y=p_top.z+50})
if (biome.depth == nil or minetest.env:get_node({ x = pos.x, y = pos.y-biome.depth-1, z = pos.z }).name ~= biome.surface) if (biome.depth == nil or minetest.env:get_node({ x = pos.x, y = pos.y-biome.depth-1, z = pos.z }).name ~= biome.surface)
and minetest.env:get_node(p_top).name == "air" and minetest.env:get_node(p_top).name == "air"
and pos.y >= biome.min_elevation and pos.y >= biome.min_elevation