init

Assets/Scripts/TextMovement.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using TMPro;
+
+[RequireComponent(typeof(TextMeshProUGUI))]
+public class TextMovement : MonoBehaviour
+{
+    enum movementType { ThreeSecondsCountdown };
+    [SerializeField] private movementType type;
+    [SerializeField] private float velocity;
+    [SerializeField] private float desiredValue;
+
+    private float originalFontSize;
+
+    private TextMeshProUGUI text;
+
+    private void Awake()
+    {
+        text = this.gameObject.GetComponent<TextMeshProUGUI>();
+        originalFontSize = text.fontSize;
+    }
+
+    private void OnEnable()
+    {
+        //text = this.gameObject.GetComponent<TextMeshProUGUI>();
+        text.fontSize = originalFontSize;
+        switch (type)
+        {
+            case movementType.ThreeSecondsCountdown:
+                StartCoroutine(ThreeSecondsCountDown(velocity, desiredValue));
+                break;
+            default:
+                break;
+        }
+    }
+
+    private IEnumerator ThreeSecondsCountDown(float velocity, float desiredValue)
+    {
+        float original = text.fontSize;
+        float limit = 1.5f;
+        for (int a = 3; a > 0; a--) {
+            text.fontSize = original;
+            text.text = a.ToString();
+            float i = 0;
+            bool increasing = true;
+            while (i < limit)
+            {
+                if (increasing)
+                {
+                    text.fontSize += velocity * Time.deltaTime;
+                    if (text.fontSize >= desiredValue)
+                    {
+                        text.fontSize = desiredValue;
+                        increasing = false;
+                    }
+                }
+                else
+                {
+                    text.fontSize -= velocity * Time.deltaTime;
+                    if (text.fontSize <= original)
+                    {
+                        text.fontSize = original;
+                        increasing = true;
+                    }
+                }
+                i+= Time.smoothDeltaTime;
+                yield return null;
+            }
+        }
+        text.fontSize = original;
+    }
+
+}