diff --git a/src/com/annimon/everlastingsummer/transitions/Transition.java b/src/com/annimon/everlastingsummer/transitions/Transition.java
new file mode 100644
index 0000000..aa3588f
--- /dev/null
+++ b/src/com/annimon/everlastingsummer/transitions/Transition.java
@@ -0,0 +1,13 @@
+package com.annimon.everlastingsummer.transitions;
+
+/**
+ * Эффект перехода.
+ * @author aNNiMON
+ */
+public interface Transition {
+
+    public static final int TYPE_FADE = 0;
+    public static final int TYPE_DISSOLVE = 1;
+    
+    int type();
+}