rcmagic

Readme: In the following pseudo code, [] indicates a subroutine.
Sometimes I choose to write the subroutine inline under the [] in order to maintain context. 
One important fact about the way rollbacks are handled here is that we are storing state for every frame. 
In any real implementation you only need to store one game state at a time. Storing a game 
state for every frame allows us to only rollback to the first frame where the predicted inputs don't match the true ones.


==Constants==
MAX_ROLLBACK_FRAMES     := Any Positive Integer         # Specifies the maximum number of frames that can be resimulated
FRAME_ADVANTAGE_LIMIT   := Any Positive Integer         # Specifies the number of frames the local client can progress ahead of the remote client before time synchronizing. 

joshuabradley012

class State {
  constructor(display, actors) {
    this.display = display;
    this.actors = actors;
  }

  update(time) {

    /**
     * provide an update ID to let actors update other actors only once

charlesroper

How to setup a practically free CDN using Backblaze B2 and Cloudflare

⚠️ Note 2023-01-21
Some things have changed since I originally wrote this in 2016. I have updated a few minor details, and the advice is still broadly the same, but there are some new Cloudflare features you can (and should) take advantage of. In particular, pay attention to Trevor Stevens' comment here from 22 January 2022, and Matt Stenson's useful caching advice. In addition, Backblaze, with whom Cloudflare are a Bandwidth Alliance partner, have published their own guide detailing how to use Cloudflare's Web Workers to cache content from B2 private buckets. That is worth reading,

mathieugerard

Get Local Wifi IP address on iOS and Android

This Gist provide the function to retrieve the local IP address of the device when connected to the wifi.

iOS

No permission is required from the user to access the information. It uses the getifaddrs method that is not directly part of the public iOS API but it's still perfectly fine to use it and allowed by Apple.

Sources

joar

# Add field
echo '{"hello": "world"}' | jq --arg foo bar '. + {foo: $foo}'
# {
#   "hello": "world",
#   "foo": "bar"
# }

# Override field value
echo '{"hello": "world"}' | jq --arg foo bar '. + {hello: $foo}'
{

cdown

urlencode() {
    # urlencode <string>

    old_lc_collate=$LC_COLLATE
    LC_COLLATE=C

    local length="${#1}"
    for (( i = 0; i < length; i++ )); do
        local c="${1:$i:1}"
        case $c in