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init version from Asteroid Dodge
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Paul Liverman III
commit
133613add8
50
ReadMe.md
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ReadMe.md
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# itchy
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A super simple version checker for use with [LÖVE](https://love2d.org) games
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published on [itch.io](https://itch.io/).
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## Installation
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Just copy `check.lua` to where you want in your source.
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## Usage
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Start it in its own thread, and send a table on the "send-itchy" channel with
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information on what you're looking for.
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```lua
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-- initialize
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versionCheck = love.thread.newThread("lib/itchy/check.lua")
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versionCheckSend = thread.getChannel("send-itchy")
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versionCheck:start()
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versionCheckSend:push({
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target = "guard13007/asteroid-dodge"
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-- other options are available!!
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})
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-- receive info
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versionCheckReceive = thread.getChannel("receive-itchy")
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if versionCheckReceive:getCount() > 0 then
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-- this could be a version or an error message!
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latest_version = versionCheckReceive:demand()
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end
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```
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### Options
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* `url` (string) If you have a different URL to check for the latest version
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from, you can specify it here.
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* `target` REQUIRED (string) The target string of your game on itch.io
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(username/game-slug)
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* `channel` (string) If you do not specify the channel name to look for on
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itch.io, it will use `osx` for Mac OS / OS X, `win32` for Windows, `linux` for
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Linux, `android` for Android, `ios` for iOS, and if any other OS is returned
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by `love.system.getOS()` it will use that string as-is.
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* `version` (any) Version of the game running right now.
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* `proxy` (string) This library uses an [HTTP proxy](https://github.com/Guard13007/insecure-proxy)
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for the HTTPS call to itch.io's API. By default it uses `https://104.236.139.220:16343`
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which is a DigitalOcean VPS I own. If you'd rather use a different proxy
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server, you can specify it here.
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* `interval` (number) If specified, a check for the latest version will happen
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again every `interval` seconds.
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* `send_interval_errors` DEFAULT false (boolean) Whether or not checks happening
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on an interval will report errors.
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77
check.lua
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check.lua
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require("love.timer")
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local thread, timer
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do
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local _obj_0 = love
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thread, timer = _obj_0.thread, _obj_0.timer
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end
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local http = require("socket.http")
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local receive = thread.getChannel("send-itchy")
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local send = thread.getChannel("receive-itchy")
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local check
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check = function(data, send_errors)
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if send_errors == nil then
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send_errors = true
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end
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local exponential_backoff = 1
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while true do
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local body, status
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if data.url then
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body, status = http.request(data.url)
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elseif data.proxy then
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body, status = http.request(tostring(data.proxy) .. "/get/https://itch.io/api/1/x/wharf/latest?target=" .. tostring(data.target) .. "&channel_name=" .. tostring(data.channel))
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end
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if status == 200 then
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local latest = body:match('%s*{%s*"latest"%s*:%s*"(.+)"%s*}%s*')
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send:push(latest)
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return true
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else
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if send_errors then
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send:push("unknown, error getting latest version: HTTP " .. tostring(status) .. ", trying again in " .. tostring(exponential_backoff) .. " seconds")
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end
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timer.sleep(exponential_backoff)
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exponential_backoff = exponential_backoff * 2
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end
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end
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end
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local start
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start = function()
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local data = receive:demand()
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if not (data.target) then
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error("Target undefined. Cannot search for latest version of unknown target!")
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end
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if not (data.version) then
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data.version = "0"
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end
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if not (data.proxy or data.url) then
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data.proxy = "http://104.236.139.220:16343"
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end
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if not (data.channel) then
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require("love.system")
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local os = love.system.getOS()
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local _exp_0 = os
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if "OS X" == _exp_0 then
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data.channel = "osx"
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elseif "Windows" == _exp_0 then
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data.channel = "win32"
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elseif "Linux" == _exp_0 then
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data.channel = "linux"
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elseif "Android" == _exp_0 then
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data.channel = "android"
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elseif "iOS" == _exp_0 then
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data.channel = "ios"
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else
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data.channel = os
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end
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end
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check(data)
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if data.interval then
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while true do
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timer.sleep(data.interval)
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if receive:getCount() > 0 then
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return start()
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end
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check(data, data.send_interval_errors)
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end
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end
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end
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return start()
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check.moon
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check.moon
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require "love.timer"
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import thread, timer from love
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http = require "socket.http"
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receive = thread.getChannel "send-itchy"
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send = thread.getChannel "receive-itchy"
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check = (data, send_errors=true) ->
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exponential_backoff = 1
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while true
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local body, status
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if data.url
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body, status = http.request data.url
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elseif data.proxy
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body, status = http.request "#{data.proxy}/get/https://itch.io/api/1/x/wharf/latest?target=#{data.target}&channel_name=#{data.channel}"
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if status == 200
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latest = body\match '%s*{%s*"latest"%s*:%s*"(.+)"%s*}%s*'
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send\push latest
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return true
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else
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if send_errors
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send\push "unknown, error getting latest version: HTTP #{status}, trying again in #{exponential_backoff} seconds"
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timer.sleep exponential_backoff
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exponential_backoff = exponential_backoff * 2
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start = ->
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-- data should be a table of information
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data = receive\demand!
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unless data.target
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error "Target undefined. Cannot search for latest version of unknown target!"
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data.version = "0" unless data.version
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data.proxy = "http://104.236.139.220:16343" unless data.proxy or data.url
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-- channel can be autodetected if not specified
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unless data.channel
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require "love.system"
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os = love.system.getOS!
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switch os
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when "OS X"
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data.channel = "osx"
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when "Windows"
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data.channel = "win32"
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when "Linux"
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data.channel = "linux"
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when "Android"
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data.channel = "android"
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when "iOS"
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data.channel = "ios"
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else
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data.channel = os
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check data
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-- if we should check again every x seconds, wait, and do so
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if data.interval
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while true
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timer.sleep data.interval
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-- if we are sent new data, start over entirely
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if receive\getCount! > 0
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return start!
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check data, data.send_interval_errors
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start!
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