feature: Added lives

Assets/Scripts/Flow/Lives.cs

@@ -0,0 +1,36 @@
+using System;
+using UnityEngine;
+using UnityEngine.Serialization;
+using UnityEngine.UI;
+
+namespace Flow {
+	public class Lives : MonoBehaviour {
+
+		[SerializeField] private Image[] lives;
+		[SerializeField] private Sprite correctLive;
+		[SerializeField] private Sprite wrongLive;
+		
+		public int CurrentLives { private set; get; }
+
+		private void Awake() {
+			ResetLives();
+		}
+
+		public void Wrong() {
+			CurrentLives--;
+
+			int timesHurt = lives.Length - CurrentLives;
+			for (int i = 0; i < timesHurt; i++) {
+				lives[i].sprite = wrongLive;
+			}
+		}
+
+		public void ResetLives() {
+			CurrentLives = lives.Length;
+
+			foreach (Image life in lives) {
+				life.sprite = correctLive;
+			}
+		}
+	}
+}