Base Scene

Assets/Scripts/UI/ProgressBar/ProgressBar.cs

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+using Exsersewo.Nydaliv.Extensions;
+using System.Collections;
+using UnityEngine;
+
+namespace Exsersewo.UI.ProgressBar
+{
+    public class ProgressBar : MonoBehaviour
+    {
+        [SerializeField]
+        RectTransform ValueSlider;
+        public ProgressBarType FillType;
+
+        [Tooltip("X=Left Y=Right")]
+        public Vector2 Padding;
+
+        [SerializeField]
+        ProgressTransitionType Transition;
+
+        [SerializeField]
+        float TransitionTime = .5f;
+
+        [SerializeField]
+        float previousValue;
+
+        RectTransform RectTransform;
+
+        void Start()
+        {
+            RectTransform = GetComponent<RectTransform>();
+            previousValue = ValueSlider.rect.width;
+        }
+
+        IEnumerator SetWidth(ulong value, ulong maxValue)
+        {
+            float hori = RectTransform.rect.width;
+
+            var width = ((float)value).Remap(0, maxValue, 0, hori-(Padding.x+Padding.y));
+
+            switch (Transition)
+            {
+                case ProgressTransitionType.Lerp:
+                case ProgressTransitionType.SmoothStep:
+                    {
+                        float TimeLerped = 0f;
+
+                        while (TimeLerped <= TransitionTime)
+                        {
+                            float lerpVal = 0;
+
+                            switch (Transition)
+                            {
+                                case ProgressTransitionType.SmoothStep:
+                                    lerpVal = Mathf.SmoothStep(previousValue, width, TimeLerped / TransitionTime);
+                                    break;
+                                case ProgressTransitionType.Lerp:
+                                    lerpVal = Mathf.Lerp(previousValue, width, TimeLerped / TransitionTime);
+                                    break;
+                            }
+
+                            SetSliderPosition(lerpVal);
+
+                            TimeLerped += Time.deltaTime;
+
+                            yield return null;
+                        }
+                    }
+                    break;
+                case ProgressTransitionType.Instant:
+                default:
+                    {
+                        SetSliderPosition(width);
+                    }
+                    break;
+            }
+
+            previousValue = width;
+        }
+
+        void SetSliderPosition(float val)
+        {
+            switch (FillType)
+            {
+                case ProgressBarType.FillFromCenter:
+                    ValueSlider.SetSizeWithCurrentAnchors(RectTransform.Axis.Horizontal, val);
+                    break;
+                case ProgressBarType.FillFromLeft:
+                    ValueSlider.SetSizeWithCurrentAnchors(RectTransform.Axis.Horizontal, val);
+                    ValueSlider.SetLeft(Padding.x);
+                    break;
+                case ProgressBarType.FillFromRight:
+                    ValueSlider.SetSizeWithCurrentAnchors(RectTransform.Axis.Horizontal, val);
+                    ValueSlider.SetRight(Padding.y);
+                    break;
+            }
+        }
+
+        public void SetValue(ulong value, ulong maxValue)
+        {
+            StartCoroutine(SetWidth(value, maxValue));
+        }
+    }
+
+    public enum ProgressBarType
+    {
+        FillFromCenter,
+        FillFromLeft,
+        FillFromRight
+    }
+
+    public enum ProgressTransitionType
+    {
+        Instant,
+        Lerp,
+        SmoothStep
+    }
+}

Assets/Scripts/UI/ProgressBar/ProgressBar.cs.meta

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Assets/Scripts/UI/ProgressBar/ProgressBarWithLabel.cs

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+namespace Exsersewo.UI.ProgressBar
+{
+    public class ProgressBarWithLabel : ProgressBar
+    {
+    }
+}

Assets/Scripts/UI/ProgressBar/ProgressBarWithLabel.cs.meta

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