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## Package sim.engine

Interface Summary
MakesSimState | An interface for classes capable of creating SimState subclasses.
Steppable | Something that can be stepped
Stoppable | Stoppable objects can be prevented from being stepped any further by calling their stop() method.

Class Summary
AsynchronousSteppable | Fires up a separate thread which runs until the simulation model requests it be halted.
MethodStep | A Steppable which calls an underlying method using Java's reflection system.
MultiStep | MultiStep takes an integer N, a boolean called countdown, and a steppable.
ParallelSequence | Spawns all the sequence elements in parallel on separate threads.
RandomSequence | RandomSequence is a Sequence which executes its Steppable objects in random order each time.
Repeat | Repeat is an abstract Steppable and Stoppable which generalizes the notion of repeated Steppables.
Schedule | Schedule defines a threadsafe scheduling queue in which events can be scheduled to occur at future time.
Schedule.Key | Timestamps stored as keys in the heap.
Sequence | Sequence is Steppable which holds an array of Steppables.
SimState | SimState represents the simulation proper.
TentativeStep | A Steppable wrapper which can be stopped.
WeakStep | WeakStep is a wrapper for steppable objects in the situation where we only want the schedule to tenuously hold onto the steppable object -- that is, if everyone else has forgotten about the object, the schedule should as well.

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