Multiplayer

[BenLeadbetter]

Allow several players to play a single level at the same time in multiplayer mode.

Acceptance Critera

• There is an option on launch to allow for a multiplayer game.
• This shouldn't complicate single player mode at all.
• Single player mode should remain the default.
• The is a dedicated screen for configuring the two player game. e.g. waiting for additional players to join the session.
• In multiplayer mode, there is an additional spacecraft for each additional player.
• Additional spacecrafts are controlled identically for each player from their respective remote systems.
• This should not have a visible impact on the game's snappy feel.

Design Suggestion

• use bevy_ggrs