Refactor HeroHandControls out of BattlePlayerControls

Assets/Battle/HeroHandControls.cs

@@ -0,0 +1,51 @@
+using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
+using UnityEngine;
+using UnityEngine.UI;
+
+public class HeroHandControls
+{
+    public delegate void CardClickedAction(HeroCard card);
+    public event CardClickedAction OnCardClicked;
+
+    private MonoBehaviour root;
+    private GameObject uiCanvas;
+    private GameObject cardPrefab;
+
+    private List<GameObject> cardsInHandUIs;
+
+    public HeroHandControls(MonoBehaviour root, GameObject uiCanvas, GameObject cardPrefab) {
+        this.root = root;
+        this.uiCanvas = uiCanvas;
+        this.cardPrefab = cardPrefab;
+    }
+    
+    public void SetHeroHand(List<HeroCard> hand) {
+        if (this.cardsInHandUIs != null) {
+            foreach (GameObject cardInHandUI in this.cardsInHandUIs) {
+                GameObject.Destroy(cardInHandUI);
+            }
+        }
+
+        this.cardsInHandUIs = new List<GameObject>();
+        for (int i = 0; i < hand.Count; i++) {
+            HeroCard card = hand[i];
+            GameObject cardUI = GameObject.Instantiate(this.cardPrefab, this.uiCanvas.transform);
+            this.cardsInHandUIs.Add(cardUI);
+            cardUI.transform.position = CalculateHandCardPosition(i, hand.Count);
+            cardUI.GetComponent<CardUI>().Init(card);
+            int cardIndex = i;
+            cardUI.GetComponent<Button>().onClick.AddListener(delegate {OnCardClicked(card);});
+        }
+    }
+    
+    private Vector3 CalculateHandCardPosition(int index, int count) {
+        const int SPACING = 8;
+        const int DELTA = BattleCardPrefabConstants.CARD_WIDTH + SPACING;
+        
+        return new Vector3(Screen.width * 0.5f - DELTA / 2 * (count - 1) + DELTA * index,
+                SPACING + BattleCardPrefabConstants.CARD_HEIGHT / 2,
+                0);
+    }
+}