Learn about fundamental latency compensation methods that provide clients with a smooth, real-time experience.

The goal is to have a demo program that draws a basic shape on the screen that can be moved by the player via keyboard input. In the background there will be a client-server application utilizing latency compensation.

• Basic application handling keyboard input and sending real network messages between a client and server (dumb client)
• Graphics for player 1 client view of a circle
• Add intentional server delay and/or tick rate to make differences more noticeable
• Client-side prediction
• Server reconciliation
• Entity interpolation
• Graphics for server view
• Networking for player 2 client, which only receives the position of player 1
• Graphics for player 2 view
• Toggleable GUI for each technique and latency/tick rate
• Add graphics to enhance demonstration
• Add variable timestep and velocity-based position calculation to all programs
• Add gifs to repo front page
• Handle any number of entities
• Add references

• cross-platform (eventually, linux preferred right now)
• client-side prediction
• entity interpolation

• refactor and clean up code to be more reusable
• wrap SDL in idiomatic C
  • utilize some sort of Result<T, E> type to wrap the C layer
    • boost::outcome
    • https://github.com/bitwizeshift/result
    • std::expected

Heavily influenced by https://www.gabrielgambetta.com/client-server-game-architecture.html

• SDL2
• C 20
• make
• CMake

Don't actually need all of these for this program, but it's what their docs recommend.

sudo apt-get install \
  build-essential \
  git \
  make \
  pkg-config \
  cmake \
  ninja-build \
  gnome-desktop-testing \
  libasound2-dev \
  libpulse-dev \
  libaudio-dev \
  libjack-dev \
  libsndio-dev \
  libx11-dev \
  libxext-dev \
  libxrandr-dev \
  libxcursor-dev \
  libxfixes-dev \
  libxi-dev \
  libxss-dev \
  libxkbcommon-dev \
  libdrm-dev \
  libgbm-dev \
  libgl1-mesa-dev \
  libgles2-mesa-dev \
  libegl1-mesa-dev \
  libdbus-1-dev \
  libibus-1.0-dev \
  libudev-dev \
  fcitx-libs-dev \
  libpipewire-0.3-dev \
  libwayland-dev \
  libdecor-0-dev