Implemented basic room exploration logic.

PuzzleGameProject/Assets/Scripts/Room.cs

@@ -1,3 +1,5 @@
+using System;
+using System.Collections;
 using TMPro;
 using UnityEngine;
 using System.Collections.Generic;
@@ -8,13 +10,15 @@ public class Room : MonoBehaviour
     public GameObject numberTextObject;
     public List<GameObject> adjacentRooms;
     public bool isEntrance;
-    private bool isExplored = false;
+    public event EventHandler<Room> ValidRoomClicked;
+    
+    bool _isExplored = false;
     
     // Start is called once before the first execution of Update after the MonoBehaviour is created
-    void Start()
-    {
-        if (isEntrance)
-        {
+    void Start() {
+        
+        
+        if (isEntrance) {
             SetPropertiesOfEntrance();
         }
         
@@ -22,15 +26,53 @@ public class Room : MonoBehaviour
         numberText.SetText(number.ToString());
     }
 
-    // Update is called once per frame
-    void Update()
-    {
-        
+    public void SetRoomExplored() {
+        _isExplored = true;
+        gameObject.GetComponent<SpriteRenderer>().color =
+            ColorUtility.AddGreyShade(gameObject.GetComponent<SpriteRenderer>().color, 0.5f);
     }
 
-    private void SetPropertiesOfEntrance()
+    void SetPropertiesOfEntrance() {
+        gameObject.GetComponent<SpriteRenderer>().color = Color.green;
+        isEntrance = true;
+    }
+    
+    IEnumerator OnMouseDown()
     {
-        this.gameObject.GetComponent<SpriteRenderer>().color = Color.green;
-        this.isEntrance = true;
+        if (IsValidRoomToExplore()) {
+            OnValidRoomClicked();
+        }
+        yield return null;
+    }
+
+    protected virtual void OnValidRoomClicked() {
+        ValidRoomClicked?.Invoke(this, this);
+    }
+
+    // Check if the room is valid to be explored. If so trigger the event.
+    bool IsValidRoomToExplore() {
+        if (_isExplored) {
+            return false;
+        }
+        
+        if (isEntrance) {
+            // All entrance rooms are valid to be explored.
+            return true;
+        }
+        else if (HasExploredAdjacentRooms()) {
+            // Otherwise the room must have an adjacent room explored.
+            return true;
+        }
+        return false;
+    }
+
+    bool HasExploredAdjacentRooms() {
+        foreach (GameObject adjacentRoom in adjacentRooms) {
+            if (adjacentRoom.GetComponent<Room>()._isExplored)
+            {
+                return true;
+            }
+        }
+        return false;
     }
 }