Feature/add stars renderer (#70)

Co-authored-by: Djelal BOUDJI <djelal@gmail.com>

Assets/Scripts/StarsRenderer.cs

@@ -0,0 +1,98 @@
+using UnityEngine;
+using UnityEngine.UI;
+
+public class StarsRenderer : MonoBehaviour
+{
+    public Image starTemplate;
+    public RectTransform starsContainer;
+
+    public LevelsLoader levelsLoader;
+
+    public float extraPadding = 10f;
+
+    private bool useManualMode = false;
+    private int manualDifficulty = 1;
+
+    private float starSpacing;
+    private int lastRenderedDifficulty = -1;
+
+    void Start()
+    {
+        if (starTemplate == null || starsContainer == null)
+        {
+            Debug.LogError("Star template ou starsContainer non assigné !", this);
+            enabled = false;
+            return;
+        }
+
+        starTemplate.gameObject.SetActive(false);
+
+        if (levelsLoader == null)
+        {
+            var loaderObj = GameObject.FindGameObjectWithTag("LevelsLoader");
+            if (loaderObj != null)
+                levelsLoader = loaderObj.GetComponent<LevelsLoader>();
+        }
+
+        starSpacing = starTemplate.rectTransform.sizeDelta.x + extraPadding;
+
+        lastRenderedDifficulty = -1;
+    }
+
+    void Update()
+    {
+        int target = GetCurrentDifficulty();
+        if (target != lastRenderedDifficulty)
+            RenderStarsInternal(target);
+    }
+
+    public void SetManualDifficulty(int difficulty)
+    {
+        useManualMode = true;
+        manualDifficulty = Mathf.Clamp(difficulty, 1, 5);
+        Debug.Log($"[StarsRenderer] SetManualDifficulty → manualDifficulty = {manualDifficulty}");
+        lastRenderedDifficulty = -1;
+        RenderStarsInternal(manualDifficulty);
+    }
+
+    public void UseAutomaticMode()
+    {
+        useManualMode = false;
+        lastRenderedDifficulty = -1;
+    }
+
+    public int GetCurrentDifficulty()
+    {
+        if (useManualMode)
+            return manualDifficulty;
+
+        if (levelsLoader != null && levelsLoader.levelCurrent != null)
+            return Mathf.Clamp(levelsLoader.levelCurrent.difficulty, 1, 5);
+
+        return 1;
+    }
+
+    private void RenderStarsInternal(int difficulty)
+    {
+        Debug.Log($"[StarsRenderer] RenderStarsInternal → difficulté = {difficulty}", this);
+        for (int i = starsContainer.childCount - 1; i >= 0; i--)
+        {
+            var child = starsContainer.GetChild(i);
+            if (child.gameObject != starTemplate.gameObject)
+                Destroy(child.gameObject);
+        }
+
+        lastRenderedDifficulty = difficulty;
+
+        float totalWidth = difficulty * starSpacing - extraPadding;
+        float startX = -totalWidth / 2 + starTemplate.rectTransform.sizeDelta.x / 2;
+
+        for (int i = 0; i < difficulty; i++)
+        {
+            var star = Instantiate(starTemplate, starsContainer);
+            star.gameObject.SetActive(true);
+            star.rectTransform.anchoredPosition = new Vector2(startX + i * starSpacing, 0f);
+            star.rectTransform.SetAsLastSibling();
+        }
+    }
+}