init: version 1

Assets/Prefabs/Sensor/Scripts/SensorController.cs

@@ -0,0 +1,83 @@
+using UnityEngine;
+using System.Collections;
+
+/// <summary>
+/// SensorController is a sensor that activates or deactivates
+/// based on collisions with a cube or player.
+/// </summary>
+public class SensorController : MonoBehaviour
+{
+   private int _collisionEnterCount;
+   private SpriteRenderer _spriteRenderer;
+   private Coroutine _activationCoroutine;
+   
+   [Header("Configuration")]
+   public Color activatedColor = new (44 / 255f, 127 / 255f, 33/ 255f);
+   public Color deactivatedColor = new (218 / 255f, 65 / 255f, 60 / 255f);
+   public float activationDelay = 0.2f;
+   
+   public bool requiresCube;
+   public int requiredCubeOriginMap = -1;
+   
+   public Activateable[] activateables;
+
+   private void Start()
+   {
+      _spriteRenderer = GetComponent<SpriteRenderer>();
+      _spriteRenderer.color = deactivatedColor;
+   }
+   
+   private void OnCollisionEnter2D(Collision2D collision)
+   {
+      if (!IsMatch(collision)) return;
+      _collisionEnterCount++;
+      if (_collisionEnterCount != 1) return;
+      
+      _activationCoroutine ??= StartCoroutine(ActivateAfterDelay());
+   }
+
+   private void OnCollisionExit2D(Collision2D collision)
+   {
+      if (!IsMatch(collision)) return;
+      _collisionEnterCount--;
+      if (_collisionEnterCount != 0) return;
+      
+      if (_activationCoroutine != null)
+      {
+         StopCoroutine(_activationCoroutine);
+         _activationCoroutine = null;
+      }
+      else
+      {
+         _spriteRenderer.color = deactivatedColor;
+         foreach (Activateable activateable in activateables)
+         {
+            activateable.SetActivation(false);
+         }
+      }
+   }
+
+   private bool IsMatch(Collision2D collision)
+   {
+      if (requiresCube)
+      {
+         if (!collision.gameObject.CompareTag("Cube")) return false;
+         var originMap = collision.gameObject.GetComponent<CubeController>().originMap;
+         if (requiredCubeOriginMap != -1 && originMap != requiredCubeOriginMap) return false;
+      }
+
+      return true;
+   }
+   
+   private IEnumerator ActivateAfterDelay()
+   {
+      yield return new WaitForSeconds(activationDelay);
+      _activationCoroutine = null;
+      
+      _spriteRenderer.color = activatedColor;
+      foreach (Activateable activateable in activateables)
+      {
+         activateable.SetActivation(true);
+      }
+   }
+}