koobas.hobune.stream
How can i get the name of the current prefab from the list..
I'm playing around with HelloAr example provided with ARCore. I have a list that contains list of prefabs, user can switch between the prefab using a left/right button. On the screen i want to show the name of the currently selected prefab. How can i get the name of currently selected prefab and switch the text on the screen to show the name? I have attached the code of my script below:
namespace GoogleARCore.Examples.HelloAR
{
using System.Collections.Generic;
using GoogleARCore;
using GoogleARCore.Examples.Common;
using UnityEditor;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;
#if UNITY_EDITOR
// Set up touch input propagation while using Instant Preview in the editor.
using Input = InstantPreviewInput;
#endif
/// <summary>
/// Controls the HelloAR example.
/// </summary>
public class HelloARController : MonoBehaviour
{
int listIndex = 0;
/// <summary>
/// The first-person camera being used to render the passthrough camera image (i.e. AR
/// background).
/// </summary>
public Camera FirstPersonCamera;
/// <summary>
/// A prefab to place when a raycast from a user touch hits a vertical plane.
/// </summary>
public GameObject GameObjectVerticalPlanePrefab;
/// <summary>
/// A prefab to place when a raycast from a user touch hits a horizontal plane.
/// </summary>
//public GameObject GameObjectHorizontalPlanePrefab;
public List<GameObject> GameObjectHorizontalPlanePrefab;
/// <summary>
/// A prefab to place when a raycast from a user touch hits a feature point.
/// </summary>
public GameObject GameObjectPointPrefab;
/// <summary>
/// The rotation in degrees need to apply to prefab when it is placed.
/// </summary>
private const float k_PrefabRotation = 180.0f;
/// <summary>
/// True if the app is in the process of quitting due to an ARCore connection error,
/// otherwise false.
/// </summary>
private bool m_IsQuitting = false;
/// <summary>
/// The Unity Awake() method.
/// </summary>
public void Awake()
{
// Enable ARCore to target 60fps camera capture frame rate on supported devices.
// Note, Application.targetFrameRate is ignored when QualitySettings.vSyncCount != 0.
Application.targetFrameRate = 60;
}
/// <summary>
/// The Unity Update() method.
/// </summary>
public void Update()
{
Text prefabNameTxt = GameObject.Find("Canvas/prefabNameTxt").GetComponent<Text>();
prefabNameTxt.text= "hello";
_UpdateApplicationLifecycle();
// If the player has not touched the screen, we are done with this update.
Touch touch;
if (Input.touchCount < 1 || (touch = Input.GetTouch(0)).phase != TouchPhase.Began)
{
return;
}
// Should not handle input if the player is pointing on UI.
if (EventSystem.current.IsPointerOverGameObject(touch.fingerId))
{
return;
}
// Raycast against the location the player touched to search for planes.
TrackableHit hit;
TrackableHitFlags raycastFilter = TrackableHitFlags.PlaneWithinPolygon |
TrackableHitFlags.FeaturePointWithSurfaceNormal;
if (Frame.Raycast(touch.position.x, touch.position.y, raycastFilter, out hit))
{
// Use hit pose and camera pose to check if hittest is from the
// back of the plane, if it is, no need to create the anchor.
if ((hit.Trackable is DetectedPlane) &&
Vector3.Dot(FirstPersonCamera.transform.position - hit.Pose.position,
hit.Pose.rotation * Vector3.up) < 0)
{
Debug.Log("Hit at back of the current DetectedPlane");
}
else
{
// Choose the prefab based on the Trackable that got hit.
GameObject prefab;
if (hit.Trackable is FeaturePoint)
{
prefab = GameObjectPointPrefab;
}
else if (hit.Trackable is DetectedPlane)
{
DetectedPlane detectedPlane = hit.Trackable as DetectedPlane;
if (detectedPlane.PlaneType == DetectedPlaneType.Vertical)
{
prefab = GameObjectVerticalPlanePrefab;
}
else
{
prefab = GameObjectHorizontalPlanePrefab[listIndex];
}
}
else
{
prefab = GameObjectHorizontalPlanePrefab[listIndex];
}
// Instantiate prefab at the hit pose.
var gameObject = Instantiate(prefab, hit.Pose.position, hit.Pose.rotation);
// Compensate for the hitPose rotation facing away from the raycast (i.e.
// camera).
gameObject.transform.Rotate(0, k_PrefabRotation, 0, Space.Self);
// Create an anchor to allow ARCore to track the hitpoint as understanding of
// the physical world evolves.
var anchor = hit.Trackable.CreateAnchor(hit.Pose);
// Make game object a child of the anchor.
gameObject.transform.parent = anchor.transform;
}
}
}
/// <summary>
/// Check and update the application lifecycle.
/// </summary>
private void _UpdateApplicationLifecycle()
{
// Exit the app when the 'back' button is pressed.
if (Input.GetKey(KeyCode.Escape))
{
Application.Quit();
}
// Only allow the screen to sleep when not tracking.
if (Session.Status != SessionStatus.Tracking)
{
Screen.sleepTimeout = SleepTimeout.SystemSetting;
}
else
{
Screen.sleepTimeout = SleepTimeout.NeverSleep;
}
if (m_IsQuitting)
{
return;
}
// Quit if ARCore was unable to connect and give Unity some time for the toast to
// appear.
if (Session.Status == SessionStatus.ErrorPermissionNotGranted)
{
_ShowAndroidToastMessage("Camera permission is needed to run this application.");
m_IsQuitting = true;
Invoke("_DoQuit", 0.5f);
}
else if (Session.Status.IsError())
{
_ShowAndroidToastMessage(
"ARCore encountered a problem connecting. Please start the app again.");
m_IsQuitting = true;
Invoke("_DoQuit", 0.5f);
}
}
/// <summary>
/// Actually quit the application.
/// </summary>
private void _DoQuit()
{
Application.Quit();
}
/// <summary>
/// Show an Android toast message.
/// </summary>
/// <param name="message">Message string to show in the toast.</param>
private void _ShowAndroidToastMessage(string message)
{
AndroidJavaClass unityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
AndroidJavaObject unityActivity =
unityPlayer.GetStatic<AndroidJavaObject>("currentActivity");
if (unityActivity != null)
{
AndroidJavaClass toastClass = new AndroidJavaClass("android.widget.Toast");
unityActivity.Call("runOnUiThread", new AndroidJavaRunnable(() =>
{
AndroidJavaObject toastObject =
toastClass.CallStatic<AndroidJavaObject>(
"makeText", unityActivity, message, 0);
toastObject.Call("show");
}));
}
}
public void ListCycleRight()
{
int sizeOfList = GameObjectHorizontalPlanePrefab.Count;
if (listIndex >= sizeOfList)
{
}
else {
listIndex++;
}
}
public void ListCycleLeft()
{
int sizeOfList = GameObjectHorizontalPlanePrefab.Count;
if (listIndex <= 0)
{
}
else
{
listIndex--;
}
}
}
}
Best Answer
Use .name property to get the name of your prefab
Link to Scripting API: https://docs.unity3d.com/ScriptReference/Object-name.html
Here an example:
public Text selectedItemText;
//-----------------------------------
public void SomeMethod()
{
Debug.Log("Selected prefab name: " + yourList[lastIndex].name);
//this will print the name of the prefab in yourList list at position lastIndex on UI Text
selectedItemText.text = yourList[lastIndex].name;
}
