1 files changed, 54 insertions, 0 deletions
diff --git a/Plugins/MonoGame.Extended/source/MonoGame.Extended.Entities/BitArrayExtensions.cs b/Plugins/MonoGame.Extended/source/MonoGame.Extended.Entities/BitArrayExtensions.cs
new file mode 100644
index 0000000..2ca0737
--- /dev/null
+++ b/Plugins/MonoGame.Extended/source/MonoGame.Extended.Entities/BitArrayExtensions.cs
@@ -0,0 +1,54 @@
+using System;
+using System.Collections;
+
+namespace MonoGame.Extended.Entities
+{
+    public static class BitArrayExtensions
+    {
+        public static bool IsEmpty(this BitArray bitArray)
+        {
+            for (var i = 0; i < bitArray.Length; i++)
+            {
+                if (bitArray[i])
+                    return false;
+            }
+
+            return true;
+        }
+
+        public static bool ContainsAll(this BitArray bitArray, BitArray other)
+        {
+            var otherBitsLength = other.Length;
+            var bitsLength = bitArray.Length;
+
+            for (var i = bitsLength; i < otherBitsLength; i++)
+            {
+                if (other[i])
+                    return false;
+            }
+
+            var s = Math.Min(bitsLength, otherBitsLength);
+
+            for (var i = 0; s > i; i++)
+            {
+                if ((bitArray[i] & other[i]) != other[i])
+                    return false;
+            }
+
+            return true;
+        }
+
+        public static bool Intersects(this BitArray bitArray, BitArray other)
+        {
+            var s = Math.Min(bitArray.Length, other.Length);
+
+            for (var i = 0; s > i; i++)
+            {
+                if (bitArray[i] & other[i])
+                    return true;
+            }
+
+            return false;
+        }
+    }
+}
+\ No newline at end of file