Added WriterGlyph signal

Assets/Fungus/Scripts/Components/Writer.cs

@@ -736,6 +736,8 @@ namespace Fungus
 
         protected virtual void NotifyGlyph()
         {
+            WriterSignals.DoWriterGlyph(this); 
+
             foreach (IWriterListener writerListener in writerListeners)
             {
                 writerListener.OnGlyph();

Assets/Fungus/Scripts/Signals/WriterSignals.cs

@@ -32,6 +32,13 @@ namespace Fungus
         public static event WriterInputHandler OnWriterInput;
         public static void DoWriterInput(Writer writer) { if (OnWriterInput != null) OnWriterInput(writer); }
 
+        /// <summary>
+        /// WriterGlyph signal. Sent when the writer writes out a glyph.
+        /// </summary>
+        public delegate void WriterGlyphHandler(Writer writer);
+        public static event WriterGlyphHandler OnWriterGlyph;
+        public static void DoWriterGlyph(Writer writer) { if (OnWriterGlyph != null) OnWriterGlyph(writer); }
+
         #endregion
     }
 }

Assets/Tests/Signals/WriterSignalsTester.cs

@@ -11,12 +11,14 @@ namespace Fungus
     {
         int correctTagCount = 0;
         bool receivedInput = false;
+        int glyphCount = 0;
 
         void OnEnable() 
         {
             WriterSignals.OnTextTagToken += OnTextTagToken;
             WriterSignals.OnWriterState += OnWriterState;
             WriterSignals.OnWriterInput += OnWriterInput;
+            WriterSignals.OnWriterGlyph += OnWriterGlyph;
     	}
     	
         void OnDisable()
@@ -24,6 +26,7 @@ namespace Fungus
             WriterSignals.OnTextTagToken -= OnTextTagToken;
             WriterSignals.OnWriterState -= OnWriterState;
             WriterSignals.OnWriterInput -= OnWriterInput;
+            WriterSignals.OnWriterGlyph -= OnWriterGlyph;
         }
 
         void OnTextTagToken(Writer writer, TextTagToken token, int index, int maxIndex)
@@ -72,6 +75,11 @@ namespace Fungus
                     IntegrationTest.Fail();
                 }
 
+                if (glyphCount != 6)
+                {
+                    IntegrationTest.Fail();
+                }
+
                 IntegrationTest.Pass();
             }
         }
@@ -80,5 +88,10 @@ namespace Fungus
         {
             receivedInput = true;
         }
+
+        void OnWriterGlyph(Writer writer)
+        {
+            glyphCount++;
+        }
     }
 }