Initial commit

Assets/Scripts/BlockDetector.cs

@@ -0,0 +1,63 @@
+using UnityEngine;
+using UnityEngine.Events;
+using UnityEngine.InputSystem;
+
+public class BlockDetector : MonoBehaviour
+{
+    [SerializeField] private InputAction _clickAction;
+    [SerializeField] private UnityEvent<BlockScript> _onBlockClicked;
+    [SerializeField] private UnityEvent<BlockScript> _onBlockDetected;
+
+    public event UnityAction<BlockScript> OnBlockClicked
+    {
+        add => _onBlockClicked.AddListener(value);
+        remove => _onBlockClicked.RemoveListener(value);
+    }
+
+    public event UnityAction<BlockScript> OnBlockDetected
+    {
+        add => _onBlockDetected.AddListener(value);
+        remove => _onBlockDetected.RemoveListener(value);
+    }
+    
+    private void OnEnable()
+    {
+        _clickAction.Enable();
+        _clickAction.performed += Click_performed;
+    }
+
+    private void OnDisable()
+    {
+        _clickAction.performed -= Click_performed;
+        _clickAction.Disable();
+    }
+
+    private void Click_performed(InputAction.CallbackContext context)
+    {
+        var clickPosition = Vector2.zero;
+        if (Touchscreen.current != null)
+            clickPosition = Touchscreen.current.position.ReadValue();
+        if (clickPosition == Vector2.zero)
+            clickPosition = Mouse.current.position.ReadValue();
+
+        var block = DetectBlockOnPosition(clickPosition);
+        if (block != null)
+            _onBlockClicked?.Invoke(block);
+    }
+
+    private BlockScript DetectBlockOnPosition(Vector2 position)
+    {
+        var ray = Camera.main.ScreenPointToRay(position);
+        if (Physics.Raycast(ray, out var hit) && hit.transform.CompareTag("GrassBlock"))
+            return hit.transform.GetComponent<BlockScript>();
+
+        return null;
+    }
+
+    private void Update()
+    {
+        var block = DetectBlockOnPosition(Mouse.current.position.ReadValue());
+        if (block != null)
+            _onBlockDetected?.Invoke(block);
+    }
+}