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package bjc.utils.dice;
public class ScalarDiceExpression implements DiceExpression {
private DiceExpressionType det;
private DiceExpression exp;
private int scalar;
public ScalarDiceExpression(DiceExpression dex, int scalr,
DiceExpressionType dt) {
exp = dex;
scalar = scalr;
det = dt;
}
@Override
public int roll() {
switch (det) {
case ADD:
return exp.roll() + scalar;
case SUBTRACT:
return exp.roll() - scalar;
case MULTIPLY:
return exp.roll() * scalar;
case DIVIDE:
return Math.round(exp.roll() / scalar);
default:
throw new IllegalStateException(
"Got passed a invalid ScalarExpressionType "
+ det);
}
}
}
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