init

Assets/Scripts/Player/PlayerHealth.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class PlayerHealth : MonoBehaviour{
+
+    [SerializeField] GameObject disk = default;
+    [SerializeField, Min(0)] int startHp = 10;
+    [SerializeField] RectTransform healthStartPos = default;
+    public int currentHp;
+    [SerializeField, Range(0, 100)] float distanceBetweenDisks = 30f;
+    Vector3 nextDiskPos;
+
+    List<Animator> diskAnimators = new List<Animator>();
+
+    [Space]
+    [SerializeField, Min(0)] int maxHp = 15;
+    [SerializeField] bool hasMaxHp = false;
+
+    // Start is called before the first frame update
+    void Start(){
+        currentHp = PlayerPrefs.GetInt("HP", startHp);
+        if (currentHp == 0)
+            currentHp = startHp;
+
+        for (int i = 0; i < currentHp; i++){
+            GameObject newDisk = Instantiate(disk, Vector3.zero, Quaternion.identity, transform);
+            newDisk.GetComponent<RectTransform>().anchoredPosition3D = healthStartPos.anchoredPosition3D + Vector3.right * distanceBetweenDisks * i;
+            diskAnimators.Add(newDisk.GetComponent<Animator>());
+            nextDiskPos = Vector3.right * distanceBetweenDisks * (i + 1);
+        }
+    }
+
+    public bool AddDisk(){
+        if (hasMaxHp && currentHp >= maxHp)
+            return false;
+
+        foreach(Animator a in diskAnimators){
+            a.SetTrigger("RestartAnimation");
+        }
+        GameObject newDisk = Instantiate(disk, Vector3.zero, Quaternion.identity, transform);
+        newDisk.GetComponent<RectTransform>().anchoredPosition3D = healthStartPos.anchoredPosition3D + nextDiskPos;
+        diskAnimators.Add(newDisk.GetComponent<Animator>());
+        nextDiskPos += Vector3.right * distanceBetweenDisks;
+        currentHp++;
+        PlayerPrefs.SetInt("HP", currentHp);
+        return true;
+    }
+
+    public void RemoveDisk(){
+        if(currentHp > 0){
+            Animator anim = diskAnimators[diskAnimators.Count - 1];
+            diskAnimators.Remove(anim);
+            Destroy(anim.gameObject);
+            nextDiskPos -= Vector3.right * distanceBetweenDisks;
+            currentHp--;
+            PlayerPrefs.SetInt("HP", currentHp);
+        }
+    }
+}