Package dev.twilite.game.simulation.rollout

Record Class RolloutSearch.EvaluateBuilder<S,A>

java.lang.Object

java.lang.Record

dev.twilite.game.simulation.rollout.RolloutSearch.EvaluateBuilder<S,A>

Type Parameters:

S - simulated state type

A - action type

Record Components:

options - search limits

actions - supplies legal actions for a state

transition - applies an action and returns the next branch state

evaluator - scores a branch node

terminal - returns whether a branch should stop expanding

Enclosing class:

RolloutSearch<S,A>

public static record RolloutSearch.EvaluateBuilder<S,A>(RolloutOptions options, Function<S,? extends Collection<A>> actions, BiFunction<S,A,S> transition, ToIntFunction<RolloutNode<S,A>> evaluator, Predicate<RolloutNode<S,A>> terminal)
extends Record

Final builder step for optional terminal configuration and construction.

Constructor Summary

Constructors

Constructor	Description
EvaluateBuilder(RolloutOptions options, Function<S,? extends Collection<A>> actions, BiFunction<S,A,S> transition, ToIntFunction<RolloutNode<S,A>> evaluator, Predicate<RolloutNode<S,A>> terminal)	Creates an instance of a EvaluateBuilder record class.

Method Summary

Modifier and Type	Method	Description
Function<S,? extends Collection<A>>	actions()	Returns the value of the actions record component.
RolloutSearch<S,A>	build()	Builds the rollout search.
final boolean	equals(Object o)	Indicates whether some other object is "equal to" this one.
ToIntFunction<RolloutNode<S,A>>	evaluator()	Returns the value of the evaluator record component.
final int	hashCode()	Returns a hash code value for this object.
RolloutOptions	options()	Returns the value of the options record component.
Predicate<RolloutNode<S,A>>	terminal()	Returns the value of the terminal record component.
RolloutSearch.EvaluateBuilder<S,A>	terminal(Predicate<RolloutNode<S,A>> terminal)	Sets the terminal predicate.
final String	toString()	Returns a string representation of this record class.
BiFunction<S,A,S>	transition()	Returns the value of the transition record component.

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Details

EvaluateBuilder

public EvaluateBuilder(RolloutOptions options,
 Function<S,? extends Collection<A>> actions,
 BiFunction<S,A,S> transition,
 ToIntFunction<RolloutNode<S,A>> evaluator,
 Predicate<RolloutNode<S,A>> terminal)

Creates an instance of a EvaluateBuilder record class.

Parameters:

options - the value for the options record component

actions - the value for the actions record component

transition - the value for the transition record component

evaluator - the value for the evaluator record component

terminal - the value for the terminal record component

Method Details

terminal

public RolloutSearch.EvaluateBuilder<S,A> terminal(Predicate<RolloutNode<S,A>> terminal)

Sets the terminal predicate.

Parameters:

terminal - returns whether a branch should stop expanding

build

public RolloutSearch<S,A> build()

Builds the rollout search.

toString

public final String toString()

Returns a string representation of this record class. The representation contains the name of the class, followed by the name and value of each of the record components.

Specified by:

toString in class Record

Returns:

a string representation of this object

hashCode

public final int hashCode()

Returns a hash code value for this object. The value is derived from the hash code of each of the record components.

Specified by:

hashCode in class Record

Returns:

a hash code value for this object

equals

public final boolean equals(Object o)

Indicates whether some other object is "equal to" this one. The objects are equal if the other object is of the same class and if all the record components are equal. All components in this record class are compared with Objects::equals(Object,Object).

Specified by:

equals in class Record

Parameters:

o - the object with which to compare

Returns:

true if this object is the same as the o argument; false otherwise.

options

public RolloutOptions options()

Returns the value of the options record component.

Returns:

the value of the options record component

actions

public Function<S,? extends Collection<A>> actions()

Returns the value of the actions record component.

Returns:

the value of the actions record component

transition

public BiFunction<S,A,S> transition()

Returns the value of the transition record component.

Returns:

the value of the transition record component

evaluator

public ToIntFunction<RolloutNode<S,A>> evaluator()

Returns the value of the evaluator record component.

Returns:

the value of the evaluator record component

terminal

public Predicate<RolloutNode<S,A>> terminal()

Returns the value of the terminal record component.

Returns:

the value of the terminal record component