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scheduling.md

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summarized in cheatbook and docs

most relevant schedules:

First

PreUpdate

StateTransition

Update

PostUpdate (parent-child transform propagation)

Last

notes:

First

PreUpdate
    anything that needs to read info as user saw
    anything that performs state transition
    any input processing

StateTransition

Update
    reaction to user input/events
    update position according to changed schematic
    prune set (prune, insert netid, connected graphs)

PostUpdate (parent-child transform propagation)

Last

Tools: PreUpdate(?) send out SchematicChanged event

SchematicSet::Direct any system directly tied to user input (spawn a device, etc.) SchematicSet::React any system which may have to react to a changed schematic (e.g. port follow parent device) SchematicSet::Post any system that need to operate on a world that is otherwise finished updating (pruning, netlisting)