forked from MTSR/techage_modpack
72 lines
1.3 KiB
Lua
72 lines
1.3 KiB
Lua
--[[
|
|
|
|
Signs Bot
|
|
=========
|
|
|
|
Copyright (C) 2019 Joachim Stolberg
|
|
|
|
GPL v3
|
|
See LICENSE.txt for more information
|
|
|
|
Signs Bot: Random Series
|
|
|
|
]]--
|
|
|
|
-- generate a table of unique pseudo random numbers
|
|
local function gen_serie(inv_size)
|
|
local tbl = {}
|
|
local offs = inv_size/2
|
|
if offs % 2 == 1 then
|
|
offs = offs + 1
|
|
end
|
|
local index = 1
|
|
|
|
for n = 1, (inv_size*2) do
|
|
tbl[#tbl + 1] = index
|
|
index = ((index + offs) % inv_size) + 1
|
|
end
|
|
return tbl
|
|
end
|
|
|
|
-- Pseudo numbers series to iterate "randomly" through inventories
|
|
local InvRandomSeries = {}
|
|
|
|
local function get_serie(inv_size)
|
|
if not InvRandomSeries[inv_size] then
|
|
InvRandomSeries[inv_size] = gen_serie(inv_size)
|
|
end
|
|
return InvRandomSeries[inv_size]
|
|
end
|
|
|
|
local function random(inv_size)
|
|
local t = get_serie(inv_size)
|
|
local i = 0
|
|
local n = #t/2
|
|
local offs = math.random(n)
|
|
return function ()
|
|
i = i + 1
|
|
if i <= n then return t[i+offs] end
|
|
end
|
|
end
|
|
|
|
|
|
--
|
|
-- API
|
|
--
|
|
-- func signs_bot.random(inv_size)
|
|
-- random iterator providing 'inv_size' possible bot inventory stack numbers
|
|
-- inv_size must be even and between 4 and 64
|
|
signs_bot.random = random
|
|
|
|
|
|
--
|
|
-- Test
|
|
--
|
|
|
|
--for size = 4,64,2 do
|
|
-- local tbl = {}
|
|
-- for idx in random(size) do
|
|
-- tbl[#tbl + 1] = idx
|
|
-- end
|
|
-- print(table.concat(tbl, ", "))
|
|
--end |