From ced3d03bdb3ce866d832e03fb212865140905a9a Mon Sep 17 00:00:00 2001
From: Thomas Leyh <leyh.thomas@web.de>
Date: Sun, 24 Jul 2016 08:14:18 +0200
Subject: Add project files.

---
 V3/Screens/IScreenManager.cs | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 V3/Screens/IScreenManager.cs

(limited to 'V3/Screens/IScreenManager.cs')

diff --git a/V3/Screens/IScreenManager.cs b/V3/Screens/IScreenManager.cs
new file mode 100644
index 0000000..e61c49c
--- /dev/null
+++ b/V3/Screens/IScreenManager.cs
@@ -0,0 +1,35 @@
+namespace V3.Screens
+{
+    /// <summary>
+    /// Handles screens using a screen stack.  You can add screens to the
+    /// foreground using the AddScreen method, remove screens from the
+    /// foreground using the RemoveScreen method and remove all screens using
+    /// the Clear method.  The top screen is always drawn and updated, and
+    /// it can decide whether lower screens should be drawn and/or updated
+    /// too.  The screens are updated from top to bottom, and drawn from
+    /// bottom to top.
+    /// </summary>
+    public interface IScreenManager : IDrawable, IUpdateable
+    {
+        /// <summary>
+        /// Adds a screen to the foreground.
+        /// </summary>
+        /// <param name="screen">the screen to add in the foreground</param>
+        void AddScreen(IScreen screen);
+
+        /// <summary>
+        /// Removes the given screen if it is on the top of the screen stack.
+        /// </summary>
+        /// <param name="screen">the screen to remove</param>
+        /// <returns>true if the screen was on top and has been removed,
+        /// false otherwise</returns>
+        void RemoveScreen(IScreen screen);
+
+        /// <summary>
+        /// Clears the screen stack.
+        /// </summary>
+        void Clear();
+
+        GameScreen GetGameScreen();
+    }
+}
-- 
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