aima.core.environment.map

Class MapStepCostFunction

java.lang.Object

aima.core.environment.map.MapStepCostFunction

All Implemented Interfaces:

StepCostFunction

public class MapStepCostFunction
extends java.lang.Object
implements StepCostFunction

Implementation of StepCostFunction interface that uses the distance between locations to calculate the cost in addition to a constant cost, so that it may be used in conjunction with a Uniform-cost search.

Author:

Ciaran O'Reilly

Constructor Summary

Constructors

Constructor and Description
MapStepCostFunction(Map map)

Method Summary

Modifier and Type	Method and Description
double	c(java.lang.Object fromCurrentState, Action action, java.lang.Object toNextState) Calculate the step cost of taking action a in state s to reach state s'.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MapStepCostFunction

public MapStepCostFunction(Map map)

Method Detail

c

public double c(java.lang.Object fromCurrentState,
                Action action,
                java.lang.Object toNextState)

Description copied from interface: StepCostFunction

Calculate the step cost of taking action a in state s to reach state s'.

Specified by:

c in interface StepCostFunction

Parameters:

fromCurrentState - the state from which action a is to be performed.

action - the action to be taken.

toNextState - the state reached by taking the action.

Returns:

the cost of taking action a in state s to reach state s'.