Temp Set-up | shell.nix

for now make sure to run cargo w/ 'nix-shell --run "cargo run"'

will add to flake.nix later as a mkShell / devShell

5/5 Bevy 0.12 Tutorial Series | https://www.youtube.com/playlist?list=PL2wAo2qwCxGDp9fzBOTy_kpUTSwM1iWWd

All Schedules in Main

Once on Start-up:

• [PreStartup]
• [Startup]
• [PostStartup] /// Run Every Frame:
• ['First']
• ['PreUpdate']
• ['StateTransition']
• ['RunFixedUpdateLoop'] ///
• ['FixedUpdate'] 0 - infinite times; dependent on time elapsed | runs after fixed period of time | like for physics ///
• ['Update']
• ['PostUpdate']
• ['Last']

Should only really StartUp/PostStartup & FixedUpdate/Update Schedules ; For Basic Use | Like my Use Case ;

• if adding; use SystemSets +

can explicity order systems using .before() & .after()

specify dependencies

.chain() can allow ordering multiple systems in sequence [sequential execution via order defined; like in a tuple]

flush points are moments in execution where Bevy applies all pending changes entity creation / component insertion / despawning entities these happen between schedules:

First || Flush || PreUpdate || Flush || Update || Flush || PostUpdate || Flush

most relevant / important one for most part is the flush between Update & PostUpdate [could be less confusing over time; flushpoints may be applied automatically in future]

apply_deferred systems can be included as a built-in

can insert a flushpoint into key areas

SystemSets allow us to group systems into sets and define their order relative to each other

more scalable for groupings of systems