diff --git a/src/com/uwsoft/editor/renderer/physics/Contacts.java b/src/com/uwsoft/editor/renderer/physics/Contacts.java
new file mode 100644
index 00000000..3b702b79
--- /dev/null
+++ b/src/com/uwsoft/editor/renderer/physics/Contacts.java
@@ -0,0 +1,10 @@
+package com.uwsoft.editor.renderer.physics;
+
+import com.badlogic.ashley.core.Entity;
+
+public interface Contacts {
+
+public void beginContact(Entity contact);
+
+	public void endContact(Entity contact);
+}