fix: animator not locking itself if changing percentage before ending

Assets/Scripts/FramedAnimator/Domain/AnimatorModel.cs

@@ -0,0 +1,51 @@
+using UnityEngine;
+
+namespace FramedAnimator.Domain {
+	public class AnimatorModel {
+		public int FrameCount { private set; get; }
+		public float FrameRate { private set; get; }
+
+		public int Limit { private set; get; }
+
+		public int RenderingFrame { private set; get; }
+		private float _currentFrame;
+
+		private bool _animationEnded;
+
+		public bool PlayToEnd { set; get; }
+
+		public AnimatorModel(float frameRate, int frameCount) {
+			_animationEnded = false;
+
+			Limit = RenderingFrame = 0;
+			_currentFrame = 0f;
+
+			FrameRate = frameRate;
+			FrameCount = frameCount;
+		}
+
+		public void PlayUntil(float fraction) {
+			Limit = Mathf.RoundToInt(FrameCount * Mathf.Clamp01(fraction));
+			Limit = Mathf.Clamp(Limit, 0, FrameCount - 1);
+		}
+
+		public void UpdateAnimationFrame(float deltaTime) {
+			if (RenderingFrame >= Limit && !PlayToEnd)
+				return;
+
+			_currentFrame += FrameRate * deltaTime;
+			RenderingFrame = Mathf.Clamp(Mathf.FloorToInt(_currentFrame), 0, PlayToEnd ? FrameCount - 1: Limit);
+		}
+
+		public bool AnimationEnded(float deltaTime) {
+			if (RenderingFrame < FrameCount - 1 || _animationEnded) return false;
+
+			_currentFrame += deltaTime * FrameRate;
+			RenderingFrame = Mathf.FloorToInt(_currentFrame);
+
+			if (RenderingFrame <= Limit) return false;
+			_animationEnded = true;
+			return true;
+		}
+	}
+}