From 775394cf6b4a3c6a7e7345affeb45bb34f6e4517 Mon Sep 17 00:00:00 2001
From: "Benjamin J. Culkin" <bjculkin@mix.wvu.edu>
Date: Sat, 2 Jun 2018 17:32:24 -0300
Subject: Finish die rewrite

This adds all of the remaining missing die modifiers, as well as a few
base die types that were missing.
---
 .../java/bjc/dicelang/dicev2/ReduceDieMod.java     | 53 ++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 dice/src/main/java/bjc/dicelang/dicev2/ReduceDieMod.java

(limited to 'dice/src/main/java/bjc/dicelang/dicev2/ReduceDieMod.java')

diff --git a/dice/src/main/java/bjc/dicelang/dicev2/ReduceDieMod.java b/dice/src/main/java/bjc/dicelang/dicev2/ReduceDieMod.java
new file mode 100644
index 0000000..266e270
--- /dev/null
+++ b/dice/src/main/java/bjc/dicelang/dicev2/ReduceDieMod.java
@@ -0,0 +1,53 @@
+package bjc.dicelang.dicev2;
+
+import java.util.function.LongBinaryOperator;
+
+public class ReduceDieMod extends Die {
+	public final Die[] dice;
+
+	public final LongBinaryOperator fold;
+	public final long initial;
+
+	public ReduceDieMod(LongBinaryOperator fold, long initial, Die... dice) {
+		super();
+
+		this.dice = dice;
+
+		this.fold    = fold;
+		this.initial = initial;
+	}
+
+	public long[] roll() {
+		return new long[] { rollSingle() };
+	}
+
+	public long rollSingle() {
+		long res = initial;
+
+		for(Die die : dice) {
+			for(long val : die.roll()) {
+				res = fold.applyAsLong(res, val);
+			}
+		}
+
+		return res;
+	}
+
+	public boolean canOptimize() {
+		for(Die die : dice) {
+			if(!die.canOptimize()) return false;
+		}
+
+		return true;
+	}
+
+	public long optimize() {
+		long res = 0;
+
+		for(Die die : dice) {
+			res = fold.applyAsLong(res, die.optimize());
+		}
+
+		return res;
+	}
+}
-- 
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