1 files changed, 55 insertions, 0 deletions
diff --git a/V3/UpdatesPerSecond.cs b/V3/UpdatesPerSecond.cs
new file mode 100644
index 0000000..e180be1
--- /dev/null
+++ b/V3/UpdatesPerSecond.cs
@@ -0,0 +1,55 @@
+using Microsoft.Xna.Framework;
+
+namespace V3
+{
+    /// <summary>
+    /// A class for telling when to do an update for events with a constant frequency.
+    /// </summary>
+    public sealed class UpdatesPerSecond
+    {
+        private double mTimeBetweenUpdates;
+        private double mTimeSinceLastUpdate;
+
+        /// <summary>
+        /// Initializes class.
+        /// </summary>
+        /// <param name="frequency">How many updates should be done per second.</param>
+        public UpdatesPerSecond(double frequency)
+        {
+            ChangeFrequency(frequency);
+        }
+
+        /// <summary>
+        /// Change update frequency.
+        /// </summary>
+        /// <param name="frequency">How many updates should be done per second.</param>
+        private void ChangeFrequency(double frequency)
+        {
+            mTimeBetweenUpdates = 1d / frequency;
+        }
+
+        /// <summary>
+        /// Tells if it is time to do an update.
+        /// </summary>
+        /// <param name="gameTime">Current game time.</param>
+        /// <returns></returns>
+        public bool IsItTime(GameTime gameTime)
+        {
+            mTimeSinceLastUpdate += gameTime.ElapsedGameTime.TotalSeconds;
+            if (mTimeSinceLastUpdate >= mTimeBetweenUpdates)
+            {
+                Reset();
+                return true;
+            }
+            return false;
+        }
+
+        /// <summary>
+        /// Reset internal timer for checking if update should be done.
+        /// </summary>
+        private void Reset()
+        {
+            mTimeSinceLastUpdate = 0;
+        }
+    }
+}
+\ No newline at end of file