private void LateUpdate()
{
Ray ray = new(_mainCamera.transform.position, _mainCamera.transform.forward);
bool foundConvaiNPC = false;
if (Physics.RaycastNonAlloc(ray, RaycastHits, rayLength) > 0)
{
RaycastHit hit = RaycastHits[0];
nearbyNPC = GetConvaiNPC(hit.transform.gameObject);
Debug.Log($"Hit: {hit.transform.gameObject.name}"); // ADD THIS
if (nearbyNPC != null)
{
foundConvaiNPC = true;
if (_lastHitNpc != nearbyNPC && !CheckForNPCToNPCConversation(nearbyNPC))
{
UpdateActiveNPC(nearbyNPC);
}
}
}
The hand object is blocking the ray. Manually move the hand away.
I turned both hands off and then moved the player around. The PushCollider is the NPC’s sub-object that I trying to work with
Will you only use one NPC?
Yes, I have only that NPC
Try this script.
using System;
using System.Collections;
using System.Collections.Generic;
using Convai.Scripts.Runtime.Attributes;
using Convai.Scripts.Runtime.Features;
using Convai.Scripts.Runtime.LoggerSystem;
using UnityEngine;
namespace Convai.Scripts.Runtime.Core
{
[DefaultExecutionOrder(-101)]
public class ConvaiNPCManager : MonoBehaviour
{
private static readonly RaycastHit[] RaycastHits = new RaycastHit[1];
[Tooltip("Length of the ray used for detecting NPCs.")] [SerializeField]
private float rayLength = 2.0f;
[Tooltip("Angle from the ray's direction to keep the NPC active, even if not directly hit by the ray.")] [SerializeField]
private float visionConeAngle = 45f;
[Tooltip("Reference to the currently active NPC.")] [ReadOnly]
public ConvaiNPC activeConvaiNPC;
[Tooltip("Reference to the NPC that is currently near the player.")] [ReadOnly]
public ConvaiNPC nearbyNPC;
// Cache used to store NPC references and avoid redundant GetComponent calls.
private readonly Dictionary<GameObject, ConvaiNPC> _convaiNPCCache = new();
// Reference to the NPC that was last hit by the raycast.
private ConvaiNPC _lastHitNpc;
// Reference to the main camera used for ray casting.
private Camera _mainCamera;
// Singleton instance of the NPC manager.
public static ConvaiNPCManager Instance { get; private set; }
private void Awake()
{
// Singleton pattern to ensure only one instance exists
if (Instance == null)
Instance = this;
else
Destroy(gameObject);
_mainCamera = Camera.main;
}
private IEnumerator Start()
{
yield return new WaitForSeconds(0.5f);
ConvaiNPC convaiNPC = FindObjectOfType<ConvaiNPC>();
UpdateActiveNPC(convaiNPC);
}
//private void LateUpdate()
//{
// Ray ray = new(_mainCamera.transform.position, _mainCamera.transform.forward);
// bool foundConvaiNPC = false;
// if (Physics.RaycastNonAlloc(ray, RaycastHits, rayLength) > 0)
// {
// RaycastHit hit = RaycastHits[0];
// nearbyNPC = GetConvaiNPC(hit.transform.gameObject);
// Debug.Log($"Hit: {hit.transform.gameObject.name}");
// if (nearbyNPC != null)
// {
// foundConvaiNPC = true;
// if (_lastHitNpc != nearbyNPC && !CheckForNPCToNPCConversation(nearbyNPC))
// {
// UpdateActiveNPC(nearbyNPC);
// }
// }
// }
// if (!foundConvaiNPC && _lastHitNpc != null)
// {
// Vector3 toLastHitNPC = _lastHitNpc.transform.position - ray.origin;
// float angleToLastHitNPC = Vector3.Angle(ray.direction, toLastHitNPC.normalized);
// float distanceToLastHitNPC = toLastHitNPC.magnitude;
// if (angleToLastHitNPC > visionConeAngle || distanceToLastHitNPC > rayLength * 1.2f)
// {
// ConvaiLogger.DebugLog($"Player left {_lastHitNpc.gameObject.name}", ConvaiLogger.LogCategory.Character);
// UpdateActiveNPC(null);
// }
// }
//}
private void OnDrawGizmos()
{
if (_mainCamera == null)
_mainCamera = Camera.main;
if (_mainCamera == null)
return;
Transform cameraTransform = _mainCamera.transform;
Vector3 rayOrigin = cameraTransform.position;
Vector3 rayDirection = cameraTransform.forward;
// Drawing the main ray
Gizmos.color = Color.blue;
Gizmos.DrawRay(rayOrigin, rayDirection.normalized * rayLength);
if (_lastHitNpc != null) DrawVisionConeArc(rayOrigin, rayDirection, cameraTransform.up);
}
private void DrawVisionConeArc(Vector3 rayOrigin, Vector3 rayDirection, Vector3 up)
{
const int arcResolution = 50; // number of segments to use for arc
float angleStep = 2 * visionConeAngle / arcResolution; // angle between each segment
Vector3 previousPoint = Quaternion.AngleAxis(-visionConeAngle, up) * rayDirection * rayLength;
for (int i = 1; i <= arcResolution; i++)
{
Vector3 nextPoint = Quaternion.AngleAxis(-visionConeAngle + angleStep * i, up) * rayDirection * rayLength;
Gizmos.DrawLine(rayOrigin + previousPoint, rayOrigin + nextPoint);
previousPoint = nextPoint;
}
Quaternion leftRotation = Quaternion.AngleAxis(-visionConeAngle, up);
Quaternion rightRotation = Quaternion.AngleAxis(visionConeAngle, up);
Vector3 leftDirection = leftRotation * rayDirection;
Vector3 rightDirection = rightRotation * rayDirection;
Gizmos.color = Color.yellow;
Gizmos.DrawLine(rayOrigin, rayOrigin + leftDirection.normalized * rayLength);
Gizmos.DrawLine(rayOrigin, rayOrigin + rightDirection.normalized * rayLength);
}
/// <summary>
/// Checks if the specified NPC is in conversation with another NPC.
/// </summary>
/// <param name="npc">The NPC to check.</param>
/// <returns>True if the NPC is in conversation with another NPC; otherwise, false.</returns>
public bool CheckForNPCToNPCConversation(ConvaiNPC npc)
{
return npc.TryGetComponent(out ConvaiGroupNPCController convaiGroupNPC) && convaiGroupNPC.IsInConversationWithAnotherNPC;
}
private void UpdateActiveNPC(ConvaiNPC newActiveNPC)
{
// Check if the new active NPC is different from the current active NPC.
if (activeConvaiNPC != newActiveNPC)
{
// Deactivate the currently active NPC, if any.
if (activeConvaiNPC != null) activeConvaiNPC.isCharacterActive = false;
// Update the reference to the new active NPC.
activeConvaiNPC = newActiveNPC;
_lastHitNpc = newActiveNPC; // Ensure the _lastHitNpc reference is updated accordingly.
// Activate the new NPC, if any.
if (newActiveNPC != null)
{
newActiveNPC.isCharacterActive = true;
ConvaiLogger.DebugLog($"Active NPC changed to {newActiveNPC.gameObject.name}", ConvaiLogger.LogCategory.Character);
}
// Invoke the OnActiveNPCChanged event, notifying other parts of the system of the change.
OnActiveNPCChanged?.Invoke(newActiveNPC);
}
}
/// <summary>
/// Sets the active NPC to the specified NPC.
/// </summary>
/// <param name="newActiveNPC">The NPC to set as active.</param>
/// <param name="updateLastHitNPC"> Whether to update the last hit NPC reference.</param>
public void SetActiveConvaiNPC(ConvaiNPC newActiveNPC, bool updateLastHitNPC = true)
{
if (activeConvaiNPC != newActiveNPC)
{
if (activeConvaiNPC != null)
// Deactivate the previous NPC
activeConvaiNPC.isCharacterActive = false;
activeConvaiNPC = newActiveNPC;
if (updateLastHitNPC)
_lastHitNpc = newActiveNPC;
if (newActiveNPC != null)
{
// Activate the new NPC
newActiveNPC.isCharacterActive = true;
ConvaiLogger.DebugLog($"Active NPC changed to {newActiveNPC.gameObject.name}", ConvaiLogger.LogCategory.Character);
}
OnActiveNPCChanged?.Invoke(newActiveNPC);
}
}
/// <summary>
/// Event that's triggered when the active NPC changes.
/// </summary>
public event Action<ConvaiNPC> OnActiveNPCChanged;
private ConvaiNPC GetConvaiNPC(GameObject obj)
{
if (!_convaiNPCCache.TryGetValue(obj, out ConvaiNPC npc))
{
npc = obj.GetComponent<ConvaiNPC>();
if (npc != null)
_convaiNPCCache[obj] = npc;
}
return npc;
}
/// <summary>
/// Gets the currently active ConvaiNPC.
/// </summary>
/// <returns>The currently active ConvaiNPC.</returns>
public ConvaiNPC GetActiveConvaiNPC()
{
return activeConvaiNPC;
}
}
}
1 Like
That makes the UI work. But it floats in the air like a video
This UI is for demo purposes. You can customize it according to your own project.
You can set it via the XRNPCUI Position Handler component in the UI Prefab.
Could you tell me where to put that script into? I couldn’t find the object that contained that script.
Assets/Convai/ConvaiXR/Prefabs/Convai Transcript Canvas - XR Chat.prefab
Thank you so much, but finally I have a problem. The UI pops up, but the conversation is not possible. Sorry for keep asking.
I’ve updated the code. Please try it.
I’ve already applied your code and the UI is up. But the microphone turns on and off motion doesn’t come up and the conversation is impossible. Please help me with this. The X button on the Oculus controller works, but the A button for conversation or the T on the keyboard doesn’t.
Is the previous error gone?
No those two errors still pop up. I’ve already applied your script but I don’t know why there’s a problem
Please show me the code.