1 files changed, 57 insertions, 0 deletions
diff --git a/V3/Screens/AbstractScreen.cs b/V3/Screens/AbstractScreen.cs
new file mode 100644
index 0000000..becd38d
--- /dev/null
+++ b/V3/Screens/AbstractScreen.cs
@@ -0,0 +1,57 @@
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Graphics;
+using V3.Input;
+
+namespace V3.Screens
+{
+    public abstract class AbstractScreen : IScreen
+    {
+        /// <summary>
+        /// Indicates whether screens below this one should be updated.
+        /// </summary>
+        public bool UpdateLower { get; }
+
+        /// <summary>
+        /// Indicates whether screens below this one should be drawn.
+        /// </summary>
+        public bool DrawLower { get; }
+
+        protected AbstractScreen(bool updateLower, bool drawLower)
+        {
+            UpdateLower = updateLower;
+            DrawLower = drawLower;
+        }
+
+        /// <summary>
+        /// Handles the given key event and returns whether it should be passed
+        /// to the screens below this one.
+        /// </summary>
+        /// <param name="keyEvent">the key event that occurred</param>
+        /// <returns>true if the event has been handeled by this screen and
+        /// should not be passed to the lower screens, false otherwise</returns>
+        public virtual bool HandleKeyEvent(IKeyEvent keyEvent)
+        {
+            return false;
+        }
+
+        /// <summary>
+        /// Handles the given mouse event and returns whether it should be passed
+        /// to the screens below this one.
+        /// </summary>
+        /// <param name="mouseEvent">the mouse event that occurred</param>
+        /// <returns>true if the event has been handeled by this screen and
+        /// should not be passed to the lower screens, false otherwise</returns>
+        public virtual bool HandleMouseEvent(IMouseEvent mouseEvent)
+        {
+            return true;
+        }
+
+        public virtual void Update(GameTime gameTime)
+        {
+        }
+
+        public virtual void Draw(GameTime gameTime, SpriteBatch spriteBatch)
+        {
+        }
+    }
+}