Crate mddem_scheduler 

Dependency-injection scheduler with Res/ResMut resource access and ordered system execution.

Systems are plain functions whose parameters implement SystemParam. The scheduler resolves resource indices at startup and executes systems in ScheduleSet order each timestep.

Modules

prelude

Structs

CondMarker

ConditionalSystem

Wraps a system with a run condition. The system only runs when the condition returns true.

CurrentState

The currently active simulation state.

DescMarker

FnMarker

FunctionCondition

FunctionSystem

Local

Per-system local state. Persists across invocations of the same system instance. Initialized with T::default() on first access.

NextState

The next state to transition to at the end of the step. Set via NextState::set().

Res

Shared immutable reference to resource T, injected into systems.

ResMut

Exclusive mutable reference to resource T, injected into systems.

Scheduler

Manages system registration, resource storage, ordering, and per-step execution.

SchedulerManager

Tracks the current run stage index and scheduler state (Setup/Run/End).

StoredSystemEntry

SystemDescriptor

Wraps a system with ordering metadata (label, before/after constraints).

Enums

ScheduleSet

Execution phase within each timestep (run loop).

ScheduleSetupSet

Execution phase during one-time setup (before the run loop).

SchedulerState

Traits

Condition

A DI-injected function that returns bool, used with .run_if().

IntoCondition

IntoScheduledSystem

Converts into a StoredSystemEntry (boxed system + optional ordering metadata).

IntoSystem

System

A runnable unit of work that receives resources via dependency injection.

SystemExt

Extension trait giving any IntoSystem implementor the .run_if(), .label(), .before(), and .after() fluent configuration methods.

SystemParam

Types that can be injected as parameters into system functions.

Functions

apply_state_transitions

System that applies pending state transitions at end of step. Register via StatesPlugin<S> or manually at PostFinalIntegration.

in_state

Run condition: returns true when the current state equals target.

set_to_value

setup_set_to_value