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package bjc.dicelang;
import java.util.Random;
/**
* A single polyhedral dice
*
* @author ben
*
*/
public class Die implements IDiceExpression {
/**
* Random # gen to use for dice
*/
private static Random rng = new Random();
/**
* Number of sides this die has
*/
private int nSides;
/**
* Create a die with the specified number of sides
*
* @param nSides
* The number of sides this dice has
*/
public Die(int nSides) {
if (nSides < 1) {
throw new UnsupportedOperationException(
"Dice with less than 1 side are not supported");
}
this.nSides = nSides;
}
@Override
public boolean canOptimize() {
return nSides == 1;
}
@Override
public int optimize() {
if (nSides != 1) {
throw new UnsupportedOperationException(
"Can't optimize " + nSides + "-sided dice");
}
return 1;
}
/*
* (non-Javadoc)
*
* @see bjc.utils.dice.IDiceExpression#roll()
*/
@Override
public int roll() {
return rng.nextInt(nSides) + 1;
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
return "d" + nSides;
}
}
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