Correct TextAdapter RevealedChars in newer TMPro

FIx #862
In Unity 2020.1 TMpro is auto updated to 3.0.x and there is a slight behaviour change from TMPro 2.x that requires us to be more thorough is our use of maxVisibleCharacters.
Add TheExperiement_TMPro

Assets/Fungus/Scripts/Utils/TextAdapter.cs

@@ -238,9 +238,12 @@ namespace Fungus
             get
             {
 #if UNITY_2018_1_OR_NEWER
-                if(tmpro != null)
+                if (tmpro != null && tmpro.textInfo != null && tmpro.textInfo.characterInfo != null)
                 {
-                    return tmpro.textInfo.characterInfo[tmpro.maxVisibleCharacters].character;
+                    if (tmpro.maxVisibleCharacters < tmpro.textInfo.characterInfo.Length && tmpro.maxVisibleCharacters > 0)
+                    {
+                        return tmpro.textInfo.characterInfo[tmpro.maxVisibleCharacters - 1].character;
+                    }
                 }
 #endif
                 return (char)0;

Assets/FungusExamples/TextMeshPro/TheExperiment_TMPro.unity.meta

@@ -0,0 +1,4 @@
+fileFormatVersion: 2
+guid: b217a13e3a0ce564cb2a2b400d8021db
+DefaultImporter:
+  userData: 

Assets/Tests/WritingSpeedTest.unity

@@ -689,7 +689,7 @@ MonoBehaviour:
   selectedBlocks:
   - {fileID: 911349658}
   selectedCommands:
-  - {fileID: 911349666}
+  - {fileID: 911349661}
   variables: []
   description: 
   stepPause: 0
@@ -715,10 +715,9 @@ MonoBehaviour:
   m_EditorClassIdentifier: 
   itemId: 1
   indentLevel: 0
-  storyText: '{s=10}asd .fas dfas, dfas {s=30}asd.fasd   fa,sdfa .sdfa s{s=60}.asdf
-    asdfa .s, asd f{s=120}dfas dfasd fasd fa,sdf as dfas dfas dfasd fa{s=600}df a
-    sd f a s ,dfasdfas dfasdfasdfasd.f asd fasd,fa sd fa sd fasd fa sdfa sd fa .s
-    d fa sd fasdfasd fas dfasd,fa sdfas dfas.dfa'
+  storyText: '{s=10}10 asd . dfas {s=30} 30 asd.fasd   fa,sdfa s{s=60}60 asdf asdfa
+    .s, asd f{s=120}120 dfas fa,sdf as dfas {s=600} 600 df dfas.dfa {s=0} 0 dfasdfasdfasd.f
+    asd fasd'
   description: 
   character: {fileID: 0}
   portrait: {fileID: 0}
@@ -808,10 +807,9 @@ MonoBehaviour:
   m_EditorClassIdentifier: 
   itemId: 4
   indentLevel: 0
-  storyText: '{s=10}asd .fas dfas, dfas {s=30}asd.fasd   fa,sdfa .sdfa s{s=60}.asdf
-    asdfa .s, asd f{s=120}dfas dfasd fasd fa,sdf as dfas dfas dfasd fa{s=600}df a
-    sd f a s ,dfasdfas dfasdfasdfasd.f asd fasd,fa sd fa sd fasd fa sdfa sd fa .s
-    d fa sd fasdfasd fas dfasd,fa sdfas dfas.dfa'
+  storyText: '{s=10}10 asd . dfas {s=30} 30 asd.fasd   fa,sdfa s{s=60}60 asdf asdfa
+    .s, asd f{s=120}120 dfas fa,sdf as dfas {s=600} 600 df dfas.dfa {s=0} 0 dfasdfasdfasd.f
+    asd fasd'
   description: 
   character: {fileID: 0}
   portrait: {fileID: 0}
@@ -940,7 +938,7 @@ MonoBehaviour:
   setSayDialog: {fileID: 0}
 --- !u!114 &911349667
 MonoBehaviour:
-  m_ObjectHideFlags: 0
+  m_ObjectHideFlags: 2
   m_CorrespondingSourceObject: {fileID: 0}
   m_PrefabInstance: {fileID: 0}
   m_PrefabAsset: {fileID: 0}
@@ -1694,6 +1692,7 @@ MonoBehaviour:
   writeWholeWords: 0
   forceRichText: 1
   instantComplete: 1
+  doReadAheadText: 1
 --- !u!114 &1470136057
 MonoBehaviour:
   m_ObjectHideFlags: 0
@@ -2409,6 +2408,7 @@ MonoBehaviour:
   writeWholeWords: 0
   forceRichText: 1
   instantComplete: 1
+  doReadAheadText: 1
 --- !u!114 &1802548009
 MonoBehaviour:
   m_ObjectHideFlags: 0

ProjectSettings/ProjectVersion.txt

@@ -1,2 +1,2 @@
-m_EditorVersion: 2019.4.8f1
-m_EditorVersionWithRevision: 2019.4.8f1 (60781d942082)
+m_EditorVersion: 2019.4.9f1
+m_EditorVersionWithRevision: 2019.4.9f1 (50fe8a171dd9)