From 5b4368ba63e19e06841d04e96896db1ab3a65e63 Mon Sep 17 00:00:00 2001
From: Ben Scholar <bens@digitalman.com>
Date: Wed, 30 Jan 2019 17:49:08 -0800
Subject: [PATCH] Added Circular Buffers for Convenience  (#26)

* circular buffers

* fix

* Update build.gradle
---
 build.gradle                                  |  2 +-
 .../team5499/monkeyLib/util/CircularBuffer.kt | 29 +++++++++++++++++++
 .../monkeyLib/util/CircularDoubleBuffer.kt    | 18 ++++++++++++
 3 files changed, 48 insertions(+), 1 deletion(-)
 create mode 100644 src/main/kotlin/org/team5499/monkeyLib/util/CircularBuffer.kt
 create mode 100644 src/main/kotlin/org/team5499/monkeyLib/util/CircularDoubleBuffer.kt

diff --git a/build.gradle b/build.gradle
index 437124e..50b5f3d 100644
--- a/build.gradle
+++ b/build.gradle
@@ -32,7 +32,7 @@ dependencies {
 }
 
 group = 'org.team5499'
-version = '2.2.1'
+version = '2.3.0'
 
 task sourcesJar(type: Jar) {
     from sourceSets.main.allJava
diff --git a/src/main/kotlin/org/team5499/monkeyLib/util/CircularBuffer.kt b/src/main/kotlin/org/team5499/monkeyLib/util/CircularBuffer.kt
new file mode 100644
index 0000000..f4cd0d6
--- /dev/null
+++ b/src/main/kotlin/org/team5499/monkeyLib/util/CircularBuffer.kt
@@ -0,0 +1,29 @@
+package org.team5499.monkeyLib.util
+
+public open class CircularBuffer<T>(maxSize: Int) {
+
+    private val mMaxSize: Int
+
+    public val elements: MutableList<T>
+
+    init {
+        mMaxSize = maxSize
+        if (mMaxSize <= 0) {
+            throw IllegalArgumentException("maxSize must be a positive integer.")
+        }
+        elements = mutableListOf()
+    }
+
+    public fun add(element: T): T? {
+        elements.add(element)
+        if (elements.size > mMaxSize) {
+            val poppedValue = elements.removeAt(0)
+            return poppedValue
+        }
+        return null
+    }
+
+    public fun clear() {
+        elements.clear()
+    }
+}
diff --git a/src/main/kotlin/org/team5499/monkeyLib/util/CircularDoubleBuffer.kt b/src/main/kotlin/org/team5499/monkeyLib/util/CircularDoubleBuffer.kt
new file mode 100644
index 0000000..c5a244d
--- /dev/null
+++ b/src/main/kotlin/org/team5499/monkeyLib/util/CircularDoubleBuffer.kt
@@ -0,0 +1,18 @@
+package org.team5499.monkeyLib.util
+
+public class CircularDoubleBuffer(maxSize: Int) : CircularBuffer<Double>(maxSize) {
+
+    public val sum: Double
+        get() {
+            var total = 0.0
+            for (num in super.elements) {
+                total += num
+            }
+            return total
+        }
+
+    public val average: Double
+        get() {
+            return sum / super.elements.size.toDouble()
+        }
+}