101 lines
3.5 KiB
C#
101 lines
3.5 KiB
C#
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using UnityEngine;
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using UnityEngine.InputSystem;
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public class InteractionController : MonoBehaviour
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{
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[Header("Interaction Settings")]
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[Tooltip("How large the proximity bubble is around the player (e.g. 3 meters).")]
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public float interactionDistance = 3f;
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[Tooltip("Layers that contain interactable objects (e.g. NPC, Default)")]
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public LayerMask interactableLayers;
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[Header("References")]
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public PlayerUIManager uiManager;
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[Header("Input")]
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[Tooltip("The key used to interact")]
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public Key interactKey = Key.E;
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// We store whatever we are currently closest to
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private IInteractable _currentInteractable;
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private void Update()
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{
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if (uiManager == null) return;
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// Create a sphere around the player to find all interactables in range
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// Use QueryTriggerInteraction.Ignore so we don't accidentally interact with giant invisible AI/Aggro triggers!
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Collider[] hits = Physics.OverlapSphere(transform.position, interactionDistance, interactableLayers, QueryTriggerInteraction.Ignore);
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IInteractable closestInteractable = null;
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float closestDistance = float.MaxValue;
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// Loop through everything in our bubble to find the closest one
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foreach (var hit in hits)
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{
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// Ignore our own body
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if (hit.transform.root == transform.root) continue;
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IInteractable interactable = hit.GetComponentInParent<IInteractable>();
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if (interactable != null && interactable.CanInteract())
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{
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float dist = Vector3.Distance(transform.position, hit.ClosestPoint(transform.position));
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if (dist < closestDistance)
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{
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closestDistance = dist;
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closestInteractable = interactable;
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}
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}
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}
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// If we found something valid nearby
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if (closestInteractable != null)
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{
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if (_currentInteractable != closestInteractable)
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{
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_currentInteractable = closestInteractable;
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ShowPrompt(closestInteractable.GetInteractText(), closestInteractable.GetSecondaryInteractText());
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}
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// Listen for input
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if (Keyboard.current != null && Keyboard.current[interactKey].wasPressedThisFrame)
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{
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closestInteractable.Interact(gameObject);
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}
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}
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else
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{
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// Nothing in range, or closest thing can't be interacted with anymore
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if (_currentInteractable != null)
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{
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_currentInteractable = null;
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HidePrompt();
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}
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}
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}
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private void ShowPrompt(string actionText, string secondaryText)
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{
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if (uiManager.interactionPanel != null) uiManager.interactionPanel.SetActive(true);
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if (uiManager.interactionText != null) uiManager.interactionText.text = actionText;
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if (uiManager.interactionSecondaryText != null)
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{
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uiManager.interactionSecondaryText.text = secondaryText;
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}
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}
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private void HidePrompt()
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{
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if (uiManager.interactionPanel != null) uiManager.interactionPanel.SetActive(false);
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}
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// Draws a helpful visual bubble in the Scene view so you can see your interaction range!
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private void OnDrawGizmosSelected()
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{
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Gizmos.color = new Color(0f, 1f, 0f, 0.3f);
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Gizmos.DrawSphere(transform.position, interactionDistance);
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}
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}
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