Passion & UI

Assets/Shift - Complete Sci-Fi UI/Scripts/Other/SpriteAnimator.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.UI;
+
+namespace Michsky.UI.Shift
+{
+    [DisallowMultipleComponent]
+    [RequireComponent(typeof(Image))]
+    public class SpriteAnimator : MonoBehaviour
+    {
+        [SerializeField] List<Sprite> sprites = new();
+        [SerializeField, Range(1, 120)] float frameRate = 24;
+
+        Image image;
+        Coroutine animCoroutine;
+        int currentFrame;
+        float frameTimer;
+
+        void Awake()
+        {
+            image = GetComponent<Image>();
+            if (sprites.Count > 0 && sprites[0] != null)
+                image.sprite = sprites[0];
+        }
+
+        void OnEnable() => Play();
+
+        void OnDisable() => Stop();
+
+        public void Play()
+        {
+            if (sprites.Count < 2)
+                return;
+
+            Stop();
+            animCoroutine = StartCoroutine(Animate());
+        }
+
+        public void Stop()
+        {
+            if (animCoroutine == null)
+                return;
+
+            StopCoroutine(animCoroutine);
+            animCoroutine = null;
+        }
+
+        IEnumerator Animate()
+        {
+            float frameDuration = 1f / Mathf.Max(frameRate, 0.01f);
+
+            while (true)
+            {
+                frameTimer += Time.deltaTime;
+
+                while (frameTimer >= frameDuration)
+                {
+                    frameTimer -= frameDuration;
+                    currentFrame = (currentFrame + 1) % sprites.Count;
+                }
+
+                if (sprites[currentFrame] != null)
+                    image.sprite = sprites[currentFrame];
+
+                yield return null;
+            }
+        }
+    }
+}