feat (interaction): Add PressurePlateButton and WallInteractButton classes with interaction logic

Assets/Code/Scripts/Interaction/WallInteractButton.cs

@@ -0,0 +1,109 @@
+using TMPro;
+using UnityEngine;
+using UnityEngine.Events;
+using UnityEngine.InputSystem;
+
+[RequireComponent(typeof(Collider))]
+public class WallInteractButton : MonoBehaviour
+{
+    [Header("Interaction")]
+    [Tooltip("Optional Input Action. If empty, fallback key will be used.")]
+    [SerializeField] private InputActionReference interactAction;
+
+    [Tooltip("Used only if no Input Action is assigned.")]
+    [SerializeField] private Key fallbackKey = Key.E;
+
+    [SerializeField] private bool oneShot = false;
+
+    [Header("Prompt")]
+    [SerializeField] private TMP_Text promptText;
+    [SerializeField] private string promptMessage = "Press E to interact";
+
+    [Header("Events")]
+    public UnityEvent OnInteract;
+
+    private bool m_playerInRange;
+    private bool m_hasInteracted;
+
+    private void Reset()
+    {
+        Collider col = GetComponent<Collider>();
+        col.isTrigger = true;
+    }
+
+    private void OnEnable()
+    {
+        if (interactAction != null)
+        {
+            interactAction.action.Enable();
+        }
+    }
+
+    private void OnDisable()
+    {
+        if (interactAction != null)
+        {
+            interactAction.action.Disable();
+        }
+    }
+
+    private void Start()
+    {
+        UpdatePrompt(false);
+    }
+
+    private void Update()
+    {
+        if (!m_playerInRange)
+            return;
+
+        if (oneShot && m_hasInteracted)
+            return;
+
+        if (WasInteractPressed())
+        {
+            m_hasInteracted = true;
+            OnInteract?.Invoke();
+        }
+    }
+
+    private void OnTriggerEnter(Collider other)
+    {
+        if (!IsPlayer(other))
+            return;
+
+        m_playerInRange = true;
+        UpdatePrompt(true);
+    }
+
+    private void OnTriggerExit(Collider other)
+    {
+        if (!IsPlayer(other))
+            return;
+
+        m_playerInRange = false;
+        UpdatePrompt(false);
+    }
+
+    private bool WasInteractPressed()
+    {
+        if (interactAction != null)
+            return interactAction.action.WasPressedThisFrame() || interactAction.action.WasPerformedThisFrame();
+
+        return Keyboard.current != null && Keyboard.current[fallbackKey].wasPressedThisFrame;
+    }
+
+    private bool IsPlayer(Collider other)
+    {
+        return other.CompareTag("Player") || other.GetComponentInParent<PlayerMovement>() != null;
+    }
+
+    private void UpdatePrompt(bool visible)
+    {
+        if (promptText == null)
+            return;
+
+        promptText.text = promptMessage;
+        promptText.gameObject.SetActive(visible);
+    }
+}