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| + | -- [[Category:Net modules]] |
| + | |
| local p = {} | | local p = {} |
| + | |
| + | local bit32 = require( 'bit32' ) |
| | | |
| -- Module for random library functions for lua because lua sucks. Written by | | -- Module for random library functions for lua because lua sucks. Written by |
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| -- I fucking hate lua. | | -- I fucking hate lua. |
| | | |
| + | -- Takes a table. Returns a bool of whether it's empty or not. |
| + | function table.empty (self) |
| + | for _, _ in pairs(self) do |
| + | return false |
| + | end |
| + | return true |
| + | end |
| + | |
| + | function table.getKeys(self) |
| + | local keys = {} |
| + | for k,_ in pairs(self) do |
| + | table.insert(keys,k) |
| + | end |
| + | return keys |
| + | end |
| + | |
| + | function table.getVals(self) |
| + | local vals = {} |
| + | for _,v in pairs(self) do |
| + | table.insert(vals,v) |
| + | end |
| + | return vals |
| + | end |
| | | |
| -- takes a string and returns string with first letter capitalized | | -- takes a string and returns string with first letter capitalized |
| function p.capitalize(str) | | function p.capitalize(str) |
| return (str:gsub("^%l", string.upper)) | | return (str:gsub("^%l", string.upper)) |
| + | end |
| + | |
| + | function p.hashString(str) |
| + | local hash = 0 |
| + | if str == nil or str == "" then |
| + | return 0 |
| + | end |
| + | if type(str) == "string" and str ~= "" then |
| + | for i = 1, #str do |
| + | local letter = str:sub(i,i) |
| + | hash = bit32.lshift(hash,3) |
| + | hash = hash+str.byte(letter) % (2^31-1) |
| + | end |
| + | end |
| + | return hash |
| + | end |
| + | |
| + | |
| + | -- Hashes a seed if given, if not just returns a hash based on current time. |
| + | function p.timeHash(seed) |
| + | -- lmfao this function wasn't a hash at all because it would never |
| + | -- return the same thing twice. |
| + | math.randomseed(p.hashString("Amatsukaze-chan is best")) |
| + | |
| + | local randomizer = 0 |
| + | |
| + | if seed == nil then |
| + | randomizer = math.random(0,9999999) |
| + | elseif type(seed) == "table" then |
| + | if table.empty(seed) then |
| + | randomizer = math.random(0,9999999) |
| + | else |
| + | for k,v in pairs(seed) do |
| + | if type(k) == "number" then |
| + | randomizer = randomizer + k |
| + | elseif type(k) == "string" then |
| + | randomizer = randomizer + p.hashString(k) |
| + | end |
| + | if type(v) == "string" then |
| + | randomizer = randomizer + p.hashString(v) |
| + | elseif type(v) == "number" then |
| + | randomizer = randomizer + v |
| + | elseif type(v) == "table" then |
| + | local tableString = p.dictConcat(v) |
| + | randomizer = randomizer + p.hashString(v) |
| + | end |
| + | end |
| + | end |
| + | elseif type(seed) == "string" then |
| + | randomizer = p.hashString(seed) |
| + | elseif type(seed) == "number" then |
| + | randomizer = seed |
| + | end |
| + | local time = os.time() |
| + | local rand = math.random() |
| + | local rtnHash = (math.floor(time*5501*rand)-math.floor(randomizer*time) + math.floor(math.random()*5501*randomizer)) % 2^32 |
| + | return rtnHash |
| end | | end |
| | | |