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package bjc.dicelang;
/**
* Implements a "compound dice"
*
* To explain, a compound dice is something like a d100 composed from two
* d10s instead of a hundred sided die.
*
* @author ben
*
*/
public class CompoundDice implements IDiceExpression {
/**
* The left die of the expression
*/
private IDiceExpression leftDice;
/**
* The right die of the expression
*/
private IDiceExpression rightDice;
/**
* Create a new compound dice using the specified dice
*
* @param left
* The die to use on the left
* @param right
* The die to use on the right
*/
public CompoundDice(IDiceExpression left, IDiceExpression right) {
this.leftDice = left;
this.rightDice = right;
}
/**
* Create a new compound dice from two dice strings
*
* @param leftExp
* The left side dice as a string
* @param rightExp
* The right side dice as a string
*/
public CompoundDice(String leftExp, String rightExp) {
this(ComplexDice.fromString(leftExp),
ComplexDice.fromString(rightExp));
}
/**
* Create a new compound dice from an array of dice strings
*
* @param exps
* An array of two dice strings
*/
public CompoundDice(String[] exps) {
this(exps[0], exps[1]);
}
@Override
public boolean canOptimize() {
return leftDice.canOptimize() && rightDice.canOptimize();
}
@Override
public int optimize() {
if (!canOptimize()) {
throw new UnsupportedOperationException(
"Cannot optimize this compound dice. "
+ "Both component dice must be optimizable"
+ " to optimize a compound dice");
}
return Integer
.parseInt(leftDice.optimize() + "" + rightDice.optimize());
}
/*
* (non-Javadoc)
*
* @see bjc.utils.dice.IDiceExpression#roll()
*/
@Override
public int roll() {
/*
* Make the combination of the two dice
*/
return Integer.parseInt(leftDice.roll() + "" + rightDice.roll());
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
return "compound[l=" + leftDice.toString() + ", r="
+ rightDice.toString() + "]";
}
}
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