I am creating an AR application with Unity. In this application, I want to place an object on the detected planes from AR.
void Update()
{
if (Input.touchCount > 0)
{
PlaceObject(Input.GetTouch(0).position);
}
}
public void PlaceObject(Vector2 touchPosition)
{
if (m_RaycastManager.Raycast(touchPosition, s_Hits, TrackableType.PlaneWithinPolygon))
{
var hitPose = s_Hits[0].pose;
if (spawnedObject == null)
{
spawnedObject = Instantiate(m_PlacedPrefab, hitPose.position, hitPose.rotation);
}
else
{
spawnedObject.transform.position = hitPose.position;
}
}
}
If I use touch input (clicking on the detected plane) it works fine and object will be placed on the plane.
When I try to call PlaceObject function with the same touchPosition from another controller, ARRaycastManager.Raycast return false and it didn't found any hit objects.
How to make ARRaycastManager.Raycast returns hit objects when called from function and not from input touch?
Related
I'm developing a search game, where players must look for certain objects. Whenever the targeted object is found and has been picked up, the player wins and go to the next level. I tagged the targeted objects as "TargetObj". I successfully implemented this when there is only one object to look for. I want to modify my code to include cases where there is more than one object to look for. Here is my code :
public void someFunction() {
//if we press the button of choice
if (Input.GetKeyDown(KeyCode.Space)) {
//and we're not holding anything
if (currentlyPickedUpObject == null) {
//and we are looking an interactable object
if (lookObject != null) {
PickUpObject();
}
} else { //if we press the pickup button and have something, we drop it
BreakConnection();
}
}
}
/* ommitted lines */
public void PickUpObject() {
if (GameObject.FindGameObjectsWithTag("TargetObj").Length == 1 & lookObject.tag == "TargetObj") {
physicsObject = lookObject.GetComponentInChildren<PhysicsObjects>();
currentlyPickedUpObject = lookObject;
pickupRB = currentlyPickedUpObject.GetComponent<Rigidbody>();
pickupRB.constraints = RigidbodyConstraints.FreezeRotation;
physicsObject.playerInteractions = this;
winUI.SetActive(true);
Time.timeScale = 0f;
SceneManager.LoadScene(SceneManager.GetActiveScene().buildIndex + 1);
Time.timeScale = 1f;
} else if (GameObject.FindGameObjectsWithTag("TargetObj").Length > 1) {
} else {
physicsObject = lookObject.GetComponentInChildren<PhysicsObjects>();
currentlyPickedUpObject = lookObject;
pickupRB = currentlyPickedUpObject.GetComponent<Rigidbody>();
pickupRB.constraints = RigidbodyConstraints.FreezeRotation;
physicsObject.playerInteractions = this;
}
}
I added this line, to check if there is more than one object to look for.
else if (GameObject.FindGameObjectsWithTag("TargetObj").Length > 1)
How to implement this (if the player picked up all objects of tag "TargetObj", go to next level.)?
A fast way of doing this is to keep a counter of picked objects. Then, if the counter is equal with the number of objects with the "TargetObj" tag, then the player wins. As snippet you can have something like this:
Gameobject[] targetObjects; // an array where you will keep your objects with "TargetObj" tag
List<GameObject> targetObjectsList;
void Start()
{
targetObjects = GameObject.FindGameObjectsWithTag("TargetObj");
targetObjectsList = new List<GameObject>();
}
.
.
.
// In your method (You didn't put all your code so I will use your snippet)
if (Input.GetKeyDown(KeyCode.Space))
{
//and we're not holding anything
if (currentlyPickedUpObject == null)
{
//and we are looking an interactable object
if (lookObject != null )
{
PickUpObject();
// I suppose that "lookObject" is the gameobject that you want to pickup. If not, replase this variable with the right gameobject.
if(!targetObjectsList.Contains(lookObject.gameObject))
{
targetObjectsList.Add(lookObject.gameObject);
if (targetObjectsList.Count == targetObjects.Length)
{
//Finish the game
winUI.SetActive(true);
Time.timeScale = 0f;
SceneManager.LoadScene(SceneManager.GetActiveScene().buildIndex + 1);
Time.timeScale = 1f;
}
}
}
}
}
//if we press the pickup button and have something, we drop it
else
{
BreakConnection();
}
}
Then you modify your PickUpObject method, just to pick and drop objects.
I'm sorry if I miss something. I wrote this without an editor and I didn't test the code, so please tell me if is something that I miss.
I am very new to unity and am building a VR app for Oculus Go. I want to pick and move the object by pointing the ray from the controller on the object and then picking or releasing it by pressing the trigger button. I want the object to stay fixed at the end of the ray's position rather than coming suddenly onto the controller. I have used this script to create a ray and basically allow the controller to pick it up but this script shits the object to the controller's position and as a result I can only move object in a circle(in 360 degrees). It also does not drop the object correctly, as the objects continue to float.
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class PlayerPointer : MonoBehaviour {
//Returns whatever object is infrount of the controller
private GameObject pointerOver;
[SerializeField]
//Is the object that is currently intractable
private PropBase selectedObject;
//Is the object currently stored in hand, ready to throw.
[SerializeField]
private PickUp inHand;
//This is a refrance to the object we want the pointer to be cast from.
[SerializeField]
public Transform controllerRef;
//This is where we want object we are holding to appear
[SerializeField]
private Transform holdingRef;
//The amount of force we want to throw objects from our hand with.
[SerializeField]
[Range(2,12)]
private float throwForce = 10;
//The script that handles the visuals to show what object is selected
[SerializeField]
private HighlightObject selectVisual;
private LineRenderer line;
void Start () {
line = GetComponent<LineRenderer> ();
}
void Update () {
//If a object is currently being held I don't want to select another
object until it is thrown.
if (inHand == null) {
WorldPointer ();
} else {
line.SetPosition (0, controllerRef.position);
line.SetPosition (1, controllerRef.position);
pointerOver = null;
}
//This function handles how you intract with selected objects
Intract ();
}
//This function handles shooting a raycast into the world from the
controller to see what can be intracted with.
void WorldPointer(){
//We set the line visual to start from the controller.
line.SetPosition (0, controllerRef.position);
RaycastHit hit;
//We reset the pointer so things don't stay selected when we are
pointing at nothing.
pointerOver = null;
//This sends a line from the controller directly ahead of it, it returns
true if it hits something. Using the RaycastHit we can then get information
back.
if (Physics.Raycast (controllerRef.position, controllerRef.forward, out
hit)) {
//Beacuse raycast is true only when it hits anything, we don't need
to check if hit is null
//We set pointerOver to whatever object the raycast hit.
pointerOver = hit.collider.gameObject;
//We set the line visual to stop and the point the raycast hit the
object.
line.SetPosition (1, hit.point);
//Here we check if the object we hit has the PropBase component, or
a child class of its.
if (pointerOver.GetComponent<PropBase> ()) {
//We set the object to be highlighted
selectVisual.NewObject (pointerOver);
} else {
selectVisual.ClearObject ();
}
} else {
//If the raycast hits nothing we set the line visual to stop a
little bit infrount of the controller.
line.SetPosition (1, controllerRef.position + controllerRef.forward
* 10);
selectVisual.ClearObject ();
}
Debug.DrawRay(controllerRef.position , controllerRef.forward *
10,Color.grey);
}
void Intract(){
//We set up the input "OculusTouchpad" in the Input manager
if (Input.GetButtonDown ("Jump") || OVRInput.GetDown
(OVRInput.Button.PrimaryTouchpad)) {
selectVisual.ClearObject ();
//Check if you are holding something you can throw first
if (inHand != null) {
inHand.Release (controllerRef.forward, throwForce);
inHand = null;
//We do this check here to prevent Errors if you have nothing
selected
} else if (selectedObject != null) {
//Check if you can pick up the selected object second
if (selectedObject.GetComponent<PickUp> ()) {
//Beacuse PickUp is a child of PropBase, we can ask InHand
to store selectedObject as PickUp, rather than use GetComponent
inHand = selectedObject as PickUp;
inHand.Store (holdingRef);
//If non of the above were valid then simple call the
trigger function of the selected object
} else {
selectedObject.Trigger ();
}
}
//If you have a object that you need to hold down a button to
intract with
} else if (Input.GetButton ("Jump") && selectedObject != null ||
OVRInput.Get (OVRInput.Button.PrimaryTouchpad) && selectedObject != null) {
selectedObject.Pulse ();
//When you are not pressing down the touchpad button, the selected
object can be updated
} else if (pointerOver != null) {
if (pointerOver.GetComponent<PropBase> ()) {
selectedObject = pointerOver.GetComponent<PropBase> ();
} else {
selectedObject = null;
}
} else {
selectedObject = null;
}
}
}
And i have attached this script to the objects I want to pick:
public class PickUp : PropBase
{
private Rigidbody rb;
void Start()
{
rb = GetComponent<Rigidbody>();
}
public virtual void Store(Transform NewParent)
{
//The following stops the object being effected by physics while it's in
the players hand
rb.isKinematic = true;
//And fixes it to the new parent it is given by the player script to
follow.
transform.parent = NewParent;
//It then resets it's position and rotation to match it's new parent
object
transform.localRotation = Quaternion.identity;
transform.localPosition = Vector3.zero;
}
public virtual void Release(Vector3 ThrowDir, float ThrowForce)
{
//On Release the object is made to be effected by physics again.
rb.isKinematic = false;
//Free itself from following it's parent object
transform.parent = null;
//And applies a burst of force for one frame to propel itself away from
the player.
rb.AddForce(ThrowDir * ThrowForce, ForceMode.Impulse);
}
}
What i'd like to see is have the position of the sphere change according to wherever the end of the ray is cast.
I have also attached this script to the player contoller, which allows it to move to a point by pointing to it and pressing the touchpad button.
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class ClickToMove : MonoBehaviour
{
private Vector3 targetPos; //This Vector3 will store the position where we
click to move.
private bool Moving = false; /*This bool keeps track of whether we are in
the process of moving or not.*/
private GameObject targetInstance;
/*The variables we want to customize. Added info headers to these for the
Unity Editor.*/
[Header("Our Go controller object")]
public GameObject goController;
[Header("Movement Speed")]
public float speed = 1;
[Header("Stop When This Far Away From Target")]
public float haltDistance = 0;
[Header("Optional Target Object")]
public GameObject targetObj;
void Update()
{
MoveToTarget(); /*Here we simply run our MoveToTarget method in the
Update method.*/
//That way we don't clutter up the Update method with too much code.
}
void MoveToTarget() //Here we do the cluttering instead.
{
var ray = new Ray(goController.transform.position,
goController.transform.forward); /*Create a ray going from the goController
position and in the Forward direction of the goController.*/
RaycastHit hitInfo; //Store info about what the ray hits.
Physics.Raycast(ray, out hitInfo, 100);
if (OVRInput.GetUp(OVRInput.Button.PrimaryTouchpad)) /*If we release the
trigger..*/
{
targetPos = hitInfo.point; /*Make our targetPos assume the
positional value of the hit point.*/
if (targetObj) /*If we have specified a Target Object to mark where
we click*/
//If we didn't, then we don't want to try to instantiate it.
{
if (targetInstance) /*If there is already a Target Object in the
scene.*/
{
Destroy(targetInstance); //Destroy it.
}
targetInstance = Instantiate(targetObj, targetPos,
transform.rotation); //Create our Target object at the position we clicked.
}
Moving = true; //And finally we set Moving to True.
}
if (Moving == true) //Since Moving is now true
{
transform.position = Vector3.MoveTowards(transform.position, new
Vector3(targetPos.x, transform.position.y, targetPos.z), speed *
Time.deltaTime); /*Transform our x and z position to move towards the
targetPos.*/
/*Note that our y position is kept at default transform position
since we only want to move along the ground plane.*/
}
if (Vector3.Distance(transform.position, targetPos) <= haltDistance + 1)
/*Check proximity to targetPos. Mainly useful to keep your player from
setting a target position right next to say a building and then end up
clipping through half of it.*/
{
if (targetInstance) //If we created a Target Object..
{
Destroy(targetInstance); //Then we want to destroy it when we
reach it.
}
Moving = false; //Since we have now arrived at our target
//destination.
}
}
}
If anyone could point me in a right direction or help me with this, I would greatly appreciate it!
Thanks in advance.
Okay, with your updated question its now possible to try and answer.
First off - have you tried not resetting your BaseProp localPosition to the controller's?
Try commenting the line that says
transform.localPosition = Vector3.zero;
This wil still orient the object and parent it to the controller but will lock it in a position relative to the moment of parenting.
You currently use "holdingRef" object as a place where the object appears. You may want to use "controllerRef" instead.
To vary distance at which the object appears you can set the object position to:
controllerRef.position+ distance*controllerRef.forward
As this is the direction in which you fire your raycasts. You can get the hit distance by querying hit.distance.
If for any reason that doesn't work out for you, the very point of the raycast hitting the collider is available within HitInfo, so with hit.point you can extract the hit position and position the object relative to that point. Another very useful attribute of hitinfo is .normal, which enables you to get direction at which the hit happened.
You can pass that info along with your Store method.
We are building an example that is similar to the "Kitten - Placing Virtual objects in AR" as shown here:
https://developers.google.com/tango/apis/unity/unity-howto-placing-objects.
Basically when you touch the screen, a kitten appears on the real world plane (floor).
In our app we have a side menu, with a few buttons and each shows a different game object. We want to detect touch anywhere on the screen except where there is UI. We want the UI to block touches in Tango, and only allow touches to instantiate the related game objects on areas of the screen without UI elements.
The touch specific code is here:
void Update() {
if (Input.touchCount == 1) {
// Trigger placepictureframe function when single touch ended.
Touch t = Input.GetTouch(0);
if (t.phase == TouchPhase.Ended) {
PlacePictureFrame(t.position);
}
}
}
(The PlacePictureFrame() places a picture frame object at the touch position.)
I can't find any Tango examples which has touch and UI combined. I've tried an asset called LeanTouch to block touches behind UI elements but it doesn't seem to work with Tango specifically. Please help!
I have tried using method 5 from this:
How to detect events on UI and GameObjects with the new EventSystem API
and while it does add a PhysicsRaycaster to the TangoARCamera (which is tagged as MainCamera), the OnPointerDown method produces no debug logs no matter where you touch the screen. Tango is a special case so this is not a duplicate question. See below:
using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;
public class PictureFrameUIController : MonoBehaviour, IPointerClickHandler {
public GameObject m_pictureFrame;
private TangoPointCloud m_pointCloud;
void Start() {
m_pointCloud = FindObjectOfType<TangoPointCloud>();
addPhysicsRaycaster();
}
void addPhysicsRaycaster() {
PhysicsRaycaster physicsRaycaster = GameObject.FindObjectOfType<PhysicsRaycaster>();
if (physicsRaycaster == null) {
Camera.main.gameObject.AddComponent<PhysicsRaycaster>();
}
}
public void OnPointerClick(PointerEventData eventData) {
Debug.Log("Clicked: " + eventData.pointerCurrentRaycast.gameObject.name);
PlacePictureFrame(eventData.pointerCurrentRaycast.screenPosition);
}
//void Update() {
// if (Input.touchCount == 1) {
// // Trigger placepictureframe function when single touch ended.
// Touch t = Input.GetTouch(0);
// if (t.phase == TouchPhase.Ended) {
// PlacePictureFrame(t.position);
// }
// }
//}
void PlacePictureFrame(Vector2 touchPosition) {
// Find the plane.
Camera cam = Camera.main;
Vector3 planeCenter;
Plane plane;
if (!m_pointCloud.FindPlane(cam, touchPosition, out planeCenter, out plane)) {
Debug.Log("cannot find plane.");
return;
}
// Place picture frame on the surface, and make it always face the camera.
if (Vector3.Angle(plane.normal, Vector3.up) > 60.0f && Vector3.Angle(plane.normal, Vector3.up) < 140.0f) {
Vector3 forward = plane.normal;
// Vector3 right = Vector3.Cross(plane.normal, cam.transform.forward).normalized;
// Vector3 forward = Vector3.Cross(right, plane.normal).normalized;
Instantiate(m_pictureFrame, planeCenter, Quaternion.LookRotation(forward, Vector3.up));
} else {
Debug.Log("surface is not steep enough for picture frame to be placed on.");
}
}
public void DeleteAllFrames() {
GameObject[] frames = GameObject.FindGameObjectsWithTag("Frame");
if (frames == null) {
return;
}
foreach (GameObject frame in frames) {
Destroy(frame);
}
}
}
If you want to detect a click anywhere on the screen except for where there is a UI control/component, you have to check if the pointer is over the UI with EventSystem.current.IsPointerOverGameObject(Input.GetTouch(0).fingerId).
If on desktop, use EventSystem.current.IsPointerOverGameObject(). You are using Tango so EventSystem.current.IsPointerOverGameObject(Input.GetTouch(0).fingerId). should be used.
void Update()
{
if (Input.touchCount == 1)
{
//Trigger placepictureframe function when single touch ended.
Touch t = Input.GetTouch(0);
if (t.phase == TouchPhase.Ended)
{
//Make sure that pointer is not over UI before calling PlacePictureFrame
if (!EventSystem.current.IsPointerOverGameObject(Input.GetTouch(0).fingerId))
{
PlacePictureFrame(t.position);
}
}
}
}
Edit:
It seems like this works with TouchPhase.Began only.
Change t.phase == TouchPhase.Ended to t.phase == TouchPhase.Began and this should work as expected. Make sure to test with a mobile device/tango instead of your mouse.
I created 9 clone objects and U use OnMouseDrag function to move my objects.
First I drag object in the area zone and left button click to placed it in the map.
void OnMouseDrag(){
if(placed==false && placedArmyCounter<3){
Vector3 mousePos = Camera.main.ScreenToWorldPoint(Input.mousePosition);
mousePos.z = 0f;
mousePos.x=Mathf.Round(mousePos.x);
mousePos.y=Mathf.Round(mousePos.y);
if( BoardManager.boardID==0 && mousePos.x>=0 && mousePos.x<=5 && mousePos.y>=0 && mousePos.y<=2){
transform.position=new Vector2((mousePos.x),(mousePos.y));
}
if( BoardManager.boardID==1 && mousePos.x>=0 && mousePos.x<=7 && mousePos.y>=0 && mousePos.y<=3){
transform.position=new Vector2((mousePos.x),(mousePos.y));
}
}
}
Left click
if(Input.GetMouseButtonDown(1) )
{
RaycastHit2D hit = Physics2D.Raycast (Camera.main.ScreenToWorldPoint((Input.mousePosition)), -Vector2.up);
if(hit.collider != null)
{
GameObject target = hit.collider.gameObject;
if(target.tag=="infantry"){
target.GetComponent<playerArmyMove>().Place();
}
if(target.tag=="archer"){
target.GetComponent<playerArmyMove>().Place();
}
if(target.tag=="horseman"){
target.GetComponent<playerArmyMove>().Place();
}
}
}
place function
public void Place(){
if(checkPlace==true){
placed=false;
}
if(checkPlace==false){
placed=true;
placedArmyCounter+=1;
}
}
When placed is true object cannot move again and placedArmyController using for starting game
By the way, I want only 3 objects can place in map area.
But there is a problem if I don't click left button , I can add a lot of objects in the map.And I don't want to happen like that.
I know I need another controller which checks "is there any object in map area and is placed or not".But if I add the controller in OnMouseDrag function any object can not move.
Is there any suggestion?
P.S : Don't care checkPlace boolean in place function it is about detect collision.
I have this script where it would add the SelectMove script at runtime when a character was touched by the user.
public GameObject target;
void Start () {
}
// Update is called once per frame
void Update () {
if(Input.touchCount > 0 || Input.GetTouch(0).phase == TouchPhase.Began){
ray = Camera.main.ScreenPointToRay(Input.GetTouch(0).position);
Debug.DrawRay(ray.origin,ray.direction * 20,Color.red);
if(Physics.Raycast(ray, out hit,Mathf.Infinity)){
Debug.Log(hit.transform.gameObject.name);
target = hit.transform.gameObject;
//Destroy(hit.transform.gameObject);
selectedPlayer();
}
}
}
void selectedPlayer(){
target.AddComponent(Type.GetType("SelectMove"));
}
In the code above, if the user will click Player A, Player A will move using accelerometer. What I need to do is if I click another character, say Player B, I need Player A to stop moving and it is now Player B's time to move. But I seemed not to get what I want. I tried destroying the script by using Destroy(this) or by this code:
if (target != null)
{
var sphereMesh = target.GetComponent<SelectMove>();
Destroy(sphereMesh);
}
But it is still not working.
If I don't destroy the previous added script, if the user clicks for another character, the previous selected player still moves along with the new one.
Is there another way that I could achieve what I needed to do?
public GameObject target = null;
void Update ()
{
if(Input.touchCount > 0 || Input.GetTouch(0).phase == TouchPhase.Began)
{
Ray ray = Camera.main.ScreenPointToRay(Input.GetTouch(0).position);
Debug.DrawRay(ray.origin,ray.direction * 20,Color.red);
RaycastHit hit;
if(Physics.Raycast(ray, out hit,Mathf.Infinity))
{
Debug.Log(hit.transform.gameObject.name);
if(this.target != null){
SelectMove sm = this.target.GetComponent<SelectMove>()
if(sm != null){ sm.enabled = false; }
}
target = hit.transform.gameObject;
//Destroy(hit.transform.gameObject);
selectedPlayer();
}
}
}
void selectedPlayer(){
SelectMove sm = this.target.GetComponent<SelectMove>();
if(sm == null){
target.AddComponent<SelectMove>();
}
sm.enabled = true;
}
The code reuses your base, the new part is that you use the previous selected object to disable the SelectMove script (I assume it is the one moving things). Instead of destroying it, it enables/disables so you save that memory consumption.
I do not think Adding and destroying scripts is the convenient method here.
Try this:
1. Add the SelectMove script to all movable players.
2. Add a public property bool IsMoving = false; to the SelectMove script and make an if statement to move if IsMoving is true.
3. Change selectedPlayer() method to instead change the target player IsMoving to true, and set the previous one (or simply all other players) to false.