Implemented turn passing and taking damage from it.

PuzzleGameProject/Assets/Scripts/Player.cs

@@ -0,0 +1,39 @@
+using System;
+using Microsoft.Unity.VisualStudio.Editor;
+using TMPro;
+using UnityEngine;
+
+public class Player : MonoBehaviour
+{
+    [SerializeField] private int maxHealth;
+    [SerializeField] private GameObject healthGameObject;
+    private int _healthIndex = 0;
+    private readonly int[] _healthBar = {0, 0, -1, -2, -4, -6, -9, -12, -16, -20};
+
+    private void Start() {
+        UpdateGUI();
+    }
+
+    public void TakeDamage(int damage)
+    {
+        if (_healthIndex + damage < _healthBar.Length)
+        {
+            _healthIndex += damage;
+            UpdateGUI();
+        }
+    }
+
+    public void Heal(int healAmount)
+    {
+        if (_healthIndex - healAmount >= 0)
+        {
+            _healthIndex -= healAmount;
+            UpdateGUI();
+        }
+    }
+
+    private void UpdateGUI()
+    {
+        healthGameObject.GetComponent<TextMeshProUGUI>().text = _healthBar[_healthIndex].ToString();
+    }
+}