Minetest-WorldEditAdditions/worldeditadditions/lib/noise/engines/red.lua
2021-07-13 00:15:23 +01:00

40 lines
909 B
Lua

local wea = worldeditadditions
local White = dofile(wea.modpath.."/lib/noise/engines/white.lua")
local Red = {}
Red.__index = Red
function Red.new(seed)
local result = {
seed = seed or math.random(),
white = White.new(seed)
}
setmetatable(result, Red)
return result
end
function Red:noise( x, y, z )
local values = {
self.white:noise(x, y, z),
self.white:noise(x + 1, y, z),
self.white:noise(x, y + 1, z),
self.white:noise(x, y, z + 1),
self.white:noise(x - 1, y, z),
self.white:noise(x, y - 1, z),
self.white:noise(x, y, z - 1),
self.white:noise(x, y - 1, z - 1),
self.white:noise(x - 1, y, z - 1),
self.white:noise(x - 1, y - 1, z),
self.white:noise(x - 1, y - 1, z - 1),
self.white:noise(x, y + 1, z + 1),
self.white:noise(x + 1, y, z + 1),
self.white:noise(x + 1, y + 1, z),
self.white:noise(x + 1, y + 1, z + 1),
}
return wea.average(values)
end
return Red