feature: Messages are now animated

Assets/Scripts/Messaging/Message.cs

@@ -1,19 +1,32 @@
 using System;
 using TMPro;
 using UnityEngine;
+using Utilities;
 
 namespace Messaging {
-	public class Message : MonoBehaviour{
+	public class Message : MonoBehaviour {
 		public RectTransform RectTransform { private set; get; }
 		public string Text => messageText.text;
 
 		[SerializeField] private TMP_Text messageText;
 
+		private TextTyper _textTyper;
+		private Coroutine _typingCoroutine;
+
 		private void Awake() {
 			RectTransform = GetComponent<RectTransform>();
+			_textTyper = new TextTyper(messageText);
 		}
 
-		public void SetMessageText(string text) {
+		public void SetMessageText(string text, bool animate) {
+			if (_textTyper.IsMessageAnimating()) {
+				_textTyper.SkipToEndOfCurrentMessage();
+			}
+			this.EnsureCoroutineStopped(ref _typingCoroutine);
+
+			if (animate)
+				_typingCoroutine = StartCoroutine(_textTyper.AnimateTextIn(text, null));
+			else
 				messageText.text = text;
 		}
 	}

Assets/Scripts/Messaging/MessageManager.cs

@@ -1,3 +1,5 @@
+using System;
+using System.Threading.Tasks;
 using UnityEngine;
 
 namespace Messaging {
@@ -10,16 +12,34 @@ namespace Messaging {
 			_messages = messageStructureGenerator.GenerateMessages();
 		}
 
+		private async void Start() {
+			await Task.Delay(2000);
+			CreateMessage("asl;dkrhjufioe qvnfioeqlcnnmcuq");
+			await Task.Delay(2000);
+			CreateMessage("asl;dkrhjufioe qvnfioeqlcnnmcuq");
+			await Task.Delay(2000);
+			CreateMessage("asl;dkrhjufioe qvnfioeqlcnnmcuq");
+			await Task.Delay(2000);
+			CreateMessage("asl;dkrhjufioe qvnfioeqlcnnmcuq");
+			await Task.Delay(2000);
+			CreateMessage("asl;dkrhjufioe qvnfioeqlcnnmcuq");
+		}
+
 		public void CreateMessage(string message) {
 			ModifyMessageText(message, _messages.Length - 1);
 		}
 
 		private void ModifyMessageText(string message, int index) {
+			ModifyPreviousMessageText(_messages[index].Text, index - 1);
+			_messages[index].SetMessageText(message, true);
+		}
+
+		private void ModifyPreviousMessageText(string message, int index) {
 			if(index < 0) return;
 			
-			ModifyMessageText(_messages[index].Text, index - 1);
+			ModifyPreviousMessageText(_messages[index].Text, index - 1);
 			
-			_messages[index].SetMessageText(message);
+			_messages[index].SetMessageText(message, false);
 		}
 	}
 }

Assets/Scripts/Messaging/TextTyper.cs

@@ -10,13 +10,16 @@ namespace Messaging {
 
 		private readonly TMP_Text _textBox;
 		
+		static readonly Color32 Clear = new(0, 0, 0, 0);
+		private const float SecondsPerCharacter = 1f / 60f;
+
 		public TextTyper(TMP_Text textBox) {
 			_textBox = textBox;
 		}
 
 		public IEnumerator AnimateTextIn(string processedMessage, Action onFinish) {
 			_textAnimating = true;
-			float secondsPerCharacter = 1f / 150f;
+			_stopAnimating = false;
 			float timeOfLastCharacter = 0;
 
 			TMP_TextInfo textInfo = _textBox.textInfo;
@@ -50,10 +53,10 @@ namespace Messaging {
 					visibleCharacterIndex = charCount;
 					FinishAnimating(onFinish);
 				}
-				if (ShouldShowNextCharacter(secondsPerCharacter, timeOfLastCharacter)) {
+				if (ShouldShowNextCharacter(SecondsPerCharacter, timeOfLastCharacter)) {
 					if (visibleCharacterIndex <= charCount) {
 						if (visibleCharacterIndex < charCount &&
-						    ShouldShowNextCharacter(secondsPerCharacter, timeOfLastCharacter)) {
+						    ShouldShowNextCharacter(SecondsPerCharacter, timeOfLastCharacter)) {
 							charAnimStartTimes[visibleCharacterIndex] = Time.unscaledTime;
 							visibleCharacterIndex++;
 							timeOfLastCharacter = Time.unscaledTime;
@@ -64,6 +67,20 @@ namespace Messaging {
 					}
 				}
 				
+				for (int j = 0; j < charCount; j++) {
+					TMP_CharacterInfo charInfo = textInfo.characterInfo[j];
+					if (!charInfo.isVisible) continue;
+					
+					int vertexIndex = charInfo.vertexIndex;
+					int materialIndex = charInfo.materialReferenceIndex;
+					Color32[] destinationColors = textInfo.meshInfo[materialIndex].colors32;
+					Color32 theColor = j < visibleCharacterIndex ? originalColors[materialIndex][vertexIndex] : Clear;
+					destinationColors[vertexIndex + 0] = theColor;
+					destinationColors[vertexIndex + 1] = theColor;
+					destinationColors[vertexIndex + 2] = theColor;
+					destinationColors[vertexIndex + 3] = theColor;
+				}
+				
 				_textBox.UpdateVertexData(TMP_VertexDataUpdateFlags.Colors32);
 				for (int i = 0; i < textInfo.meshInfo.Length; i++) {
 					TMP_MeshInfo theInfo = textInfo.meshInfo[i];

Assets/Scripts/Utilities.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 1edc85165243485db8a6f414074b8f6c
+timeCreated: 1706301321

Assets/Scripts/Utilities/MonoBehaviourExtensions.cs

@@ -0,0 +1,11 @@
+using UnityEngine;
+
+namespace Utilities {
+	public static class MonoBehaviourExtensions {
+		public static void EnsureCoroutineStopped(this MonoBehaviour value, ref Coroutine routine) {
+			if (routine == null) return;
+			value.StopCoroutine(routine);
+			routine = null;
+		}
+	}
+}

Assets/Scripts/Utilities/MonoBehaviourExtensions.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 6950117e9f384976acc9489f6f1ae482
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: