Extracted the Bang stats system into reusable land. Too late for Yohoho, but

Whirled will benefit.


git-svn-id: svn+ssh://src.earth.threerings.net/vilya/trunk@251 c613c5cb-e716-0410-b11b-feb51c14d237

src/java/com/threerings/stats/data/IntStat.java

@@ -0,0 +1,71 @@
+//
+// $Id$
+
+package com.threerings.stats.data;
+
+import java.io.IOException;
+
+import com.threerings.io.ObjectInputStream;
+import com.threerings.io.ObjectOutputStream;
+
+/**
+ * Used to track a single integer statistic.
+ */
+public class IntStat extends Stat
+{
+    /**
+     * Returns the value of this integer statistic.
+     */
+    public int getValue ()
+    {
+        return _value;
+    }
+
+    /**
+     * Sets this statistic's value to the specified value.
+     *
+     * @return true if the stat was modified, false if not.
+     */
+    public boolean setValue (int value)
+    {
+        if (value != _value) {
+            _value = value;
+            _modified = true;
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * Increments this statistic by the specified delta value.
+     *
+     * @return true if the stat was modified, false if not.
+     */
+    public boolean increment (int delta)
+    {
+        return setValue(_value + delta);
+    }
+
+    @Override // documentation inherited
+    public String valueToString ()
+    {
+        return String.valueOf(_value);
+    }
+
+    @Override // documentation inherited
+    public void persistTo (ObjectOutputStream out, AuxDataSource aux)
+        throws IOException
+    {
+        out.writeInt(_value);
+    }
+
+    @Override // documentation inherited
+    public void unpersistFrom (ObjectInputStream in, AuxDataSource aux)
+        throws IOException, ClassNotFoundException
+    {
+        _value = in.readInt();
+    }
+
+    /** Contains the integer value of this statistic. */
+    protected int _value;
+}