I have developed a VR game using Unity and Google VR SDK for Android. I want the game to be playable without a VR headset too. How should I implement switching from VR to Normal mode and vice versa? I want to maintain 360 rotation while in Normal Mode using the phone gyroscope. I have looked through many scripts online, but I can't find anything that would make this possible.
I have found that switching modes can be done using XRSettings.enabled = true/false (depending on the mode), but how to maintain 360 rotation while in Normal (Non VR mode)
Here is the script I wrote:
public class GyroToggleManager : MonoBehaviour {
private int flag = 0;
private Quaternion offset;
IEnumerator SwitchToVR() {
string desiredDevice = "cardboard";
XRSettings.LoadDeviceByName(desiredDevice);
yield return null;
XRSettings.enabled = true;
transform.localRotation = Quaternion.identity;
}
IEnumerator SwitchTo2D() {
Input.gyro.enabled = true;
// couldn't figure out how to find this.
offset = ;
XRSettings.LoadDeviceByName("");
yield return null;
transform.localRotation = Quaternion.identity;
}
// Use this for initialization
void Start () {
if(XRSettings.enabled == false){
Input.gyro.enabled = true;
}
}
// Update is called once per frame
void Update () {
if (XRSettings.enabled) {
return;
}
//Also tried different combinations here nothing worked.
transform.localRotation = Input.gyro.attitude ;
}
public void StartVR(){
if(XRSettings.enabled == false){
StartCoroutine (SwitchToVR ());
}
}
public void StartN(){
if(XRSettings.enabled == true){
StartCoroutine(SwitchTo2D());
}
}
}
Updated Script:
public class GyroToggleManager : MonoBehaviour {
Quaternion offset;
IEnumerator SwitchToVR() {
string desiredDevice = "cardboard";
XRSettings.LoadDeviceByName(desiredDevice);
yield return null;
XRSettings.enabled = true;
transform.rotation = Quaternion.identity;
}
IEnumerator SwitchTo2D()
{
Input.gyro.enabled = true;
//Get offset.. Subtract Camera rotation from Gyro rotation
offset = transform.rotation * Quaternion.Inverse(GyroToUnity(Input.gyro.attitude));
XRSettings.LoadDeviceByName("");
yield return null;
XRSettings.enabled = false;
}
private static Quaternion GyroToUnity(Quaternion q)
{
return new Quaternion(q.x, q.y, -q.z, -q.w);
}
// Use this for initialization
void Start () {
if(XRSettings.enabled == false){
Input.gyro.enabled = true;
}
}
void Update()
{
if (XRSettings.enabled)
{
return;
}
//Add the gyro value with the offset then apply to the camera
transform.rotation = offset * GyroToUnity(Input.gyro.attitude);
}
public void StartVR(){
if(XRSettings.enabled == false){
StartCoroutine (SwitchToVR ());
}
}
public void StartN(){
if(XRSettings.enabled == true){
StartCoroutine(SwitchTo2D());
}
}
}
Below is a simple camera follow script that follows a player ball while maintaining the offset distance between the camera and the player. It uses an offset value to do that by subtracting the camera's position from the player's position and then re-applying that offset to the camera's position with current player position in the Update or LateUpdate function.
public Transform playerTransform;
public Transform mainCameraTransform = null;
private Vector3 cameraOffset = Vector3.zero;
void Start()
{
mainCameraTransform = Camera.main.transform;
//Get camera-player Transform Offset that will be used to move the camera
cameraOffset = mainCameraTransform.position - playerTransform.position;
}
void LateUpdate()
{
//Move the camera to the position of the playerTransform with the offset that was saved in the beginning
mainCameraTransform.position = playerTransform.position + cameraOffset;
}
The example and code above is not exactly your solution but it's the easiest way to understand what you need to do.
In your case you need to subtract the camera's rotation from the gyro sensor or Input.gyro.attitude. The minor changes is that you can't really use - or + for that since both are Quaternion not Vector3 as in the example above.
To subtract a Quaternion from another Quaternion like I did in the
Start function with Vector3, multiply the inverse of the other
Quaternion. The inverse is
obtained with Quaternion.Inverse.
To add two Quaternions like I did in the LateUpdate function
above with Vector3, simply multiply both Quaternion together.
Here is the relevant changes in your code:
Quaternion offset;
IEnumerator SwitchTo2D()
{
Input.gyro.enabled = true;
//Get offset.. Subtract Camera rotation from Gyro rotation
offset = transform.rotation * Quaternion.Inverse(GyroToUnity(Input.gyro.attitude));
XRSettings.LoadDeviceByName("");
yield return null;
}
// Update is called once per frame
void Update()
{
if (XRSettings.enabled)
{
return;
}
//Add the gyro value with the offset then apply to the camera
transform.rotation = offset * GyroToUnity(Input.gyro.attitude);
}
private static Quaternion GyroToUnity(Quaternion q)
{
return new Quaternion(q.x, q.y, -q.z, -q.w);
}
The GyroToUnity function is used to convert the gyroscope coordinate into Unity's coordinate before applying it to the camera. The gyroscope sensor is using the right-handed coordinate while Unity's camera and other objects are using the left-handed coordinate. See this for more information.
Related
firstly i'm sorry if sometimes my English will be a bit incomprehensible, i'll try to do my best.
Actually i'm trying to build a simple AI system with unity Navimesh Component, my goal is :
NPC will check witch player is nearest to it's position and go there to kill him.
if target player is facing me run away
my actual code is working but with some issues
private Transform player;
private UnityEngine.AI.NavMeshAgent myNMagent;
private Transform startTransform;
public float multiplyBy;
public Vector3 resultedVector;
// Use this for initialization
void Start () {
player = GameObject.FindGameObjectWithTag ("Player").transform;
myNMagent = this.GetComponent<UnityEngine.AI.NavMeshAgent> ();
RunFrom ();
}
// Update is called once per frame
void Update () {
//if is not facing got to eat him
if(!ISFacing())
{
GotToEat();
}
else
{
RunFrom ();
}
}
public void RunFrom()
{
startTransform = transform;
transform.rotation = Quaternion.LookRotation(transform.position - player.position);
Vector3 runTo = transform.position + transform.forward * multiplyBy;
NavMeshHit hit;
if(NavMesh.SamplePosition(runTo, out hit, 50, 1 << NavMesh.GetAreaFromName("Walkable")))
{
transform.position = startTransform.position;
transform.rotation = startTransform.rotation;
myNMagent.SetDestination(hit.position);
}
else
{
Debug.Log("not hitting");
}
}
private void GotToEat()
{
transform.rotation = Quaternion.LookRotation(player.position - transform.position);
myNMagent.SetDestination(player.transform.position);
}
private bool ISFacing()
{
float angle = 45;
float angleToPlayer = Vector3.Angle(player.transform.forward.normalized,( transform.position - player.transform.position).normalized);
if( angleToPlayer < angle)
{
return true;
}
else
return false;
}
bool IsHit(out Vector3 result)
{
for (int i = 0; i < 30; i++)
{
Vector3 fixedPoint = transform.position + transform.forward * multiplyBy;
NavMeshHit hit;
if (NavMesh.SamplePosition(fixedPoint, out hit, 10.0f,1 << NavMesh.GetAreaFromName("Walkable")))
{
result = hit.position;
return true;
}
}
result = Vector3.zero;
return false;
}
when NPC is going to reach the corner of my map it won't move anymore will freeze there.
i suppose that i should check if any hitting navmesh is "Walkable" or not, but my function will return always true, so i can't tell to navimesh to go in any other direction..
what i'm missing up?
A video of it
video
I'm trying to make a spring wall in my 2d platformer. However every way I've tried to move my character (addforce, transform.translate and even tried using the bouncy naterial) teleports my character rather then moving it. This doesn't happen with my controller script. I suspect something in my script is causing this interaction but I'm not sure exactly what. Here is my controller script. Any suggestions would be greatly appreciated :))
using UnityEngine;
using System.Collections;
public class controller : MonoBehaviour
{
//how fast he can go
public float topSpeed = 15f;
bool facingRight = true;
//what direction character is facing
bool grounded = false;
//check if the character is grounded
public Transform groundCheck;
//the transform is used to see if character has touched the ground yet
float groundRadius = 0.2f;
//creates a ground radius for the transform circle for ground detection
GameObject Player, Player2;
int characterselect;
//I'm pretty sure this stuff ^^ is unnessecary and is from when I had the character switch in this script but dont want to remove just in case
public float jumpForce = 700f;
//the characters jumpforce
public GameObject jumpParticles;
public LayerMask whatIsGround;
//what layer is the ground
void Start()
{
characterselect = 1;
Player = GameObject.Find("Player");
Player2 = GameObject.Find("Player2");
//loads game objects as variables I'm pretty sure this stuff ^^^^ is unnessecary and is from when I had the character switch in this script but dont want to remove just in case
}
void FixedUpdate()
{
//has the transform hit the ground yet returns a true or false value
grounded = Physics2D.OverlapCircle(groundCheck.position, groundRadius, whatIsGround);
// get direction
float move = Input.GetAxis("Horizontal");
//add velocity to the move direction times by the speed
GetComponent<Rigidbody2D>().velocity = new Vector2(move * topSpeed, GetComponent<Rigidbody2D>().velocity.y);
if (move > 0 && !facingRight) //if facing not right then use the flip function
flip();
else if (move < 0 && facingRight)
flip();
//the whole flip turned out not to be nesseary as my sprites were symetric
}
void Update()
{
//if the character is in fact touching the ground then when space is pressed the function will run
if(grounded&& Input.GetKeyDown(KeyCode.Space))
{
//adds the jump force to the rigidbody attached to the character
GetComponent<Rigidbody2D>().AddForce(new Vector2(0, jumpForce));
//Instantiate(jumpParticles, transform.position, transform.rotation);
//Destroy(jumpParticles, 3f);
}
{
//this was code I was working on for character switching but couldn't get it to work properly. I didn't delete it because it took me ages to do and was recycled in the characterswitch script
// if (Input.GetKeyDown(KeyCode.E))
// {
// if (characterselect==1)
// {
// characterselect = 2;
// }
// else if (characterselect==2)
// {
// characterselect = 1;
// }
// }
// if (characterselect==1)
// {
// Player.SetActive(true);
// Player2.SetActive(false);
// }
// else if (characterselect==2)
// {
// Player.SetActive(false);
// Player2.SetActive(true);
// }
}
if (Input.GetKeyDown(KeyCode.LeftShift))
{
topSpeed = topSpeed * 2;
}
else if (Input.GetKeyUp(KeyCode.LeftShift))
{
topSpeed = 15;
}
}
void flip()
{
//for when facing the other direction
facingRight = ! facingRight;
//load the local scale
Vector3 theScale = transform.localScale;
//flip character on the x axis
theScale.x *= -1;
//and then apply it to the local scale
transform.localScale = theScale;
}
Edit
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class boost : MonoBehaviour {
private Rigidbody2D rb2d;
// Use this for initialization
void OnCollisionEnter2D(Collision2D other){
if (other.gameObject.tag == "booster") {
Vector2 tempvect = new Vector2 (2, 0);
rb2d.MovePosition ((Vector2)transform.position + tempvect);
}
}
void Start () {
rb2d = GetComponent<Rigidbody2D>();
}
// Update is called once per frame
void Update () {
}
}
This is the code that I think should make it work the error comes at
rb2d.MovePosition ((Vector2)transform.position + tempvect);
I have created a project where a cube is rotated when we touch on it. I want the cube to return back to its original position when the user stops touching the cube. Below I have added the source code of rotating a cube:
using UnityEngine;
using System.Collections;
[RequireComponent(typeof(MeshRenderer))]
public class dr : MonoBehaviour
{
#region ROTATE
private float _sensitivity = 1f;
private Vector3 _mouseReference;
private Vector3 _mouseOffset;
private Vector3 _rotation = Vector3.zero;
private bool _isRotating;
#endregion
void Update()
{
if(_isRotating)
{
// offset
_mouseOffset = (Input.mousePosition - _mouseReference); // apply rotation
_rotation.y = -(_mouseOffset.x + _mouseOffset.y) * _sensitivity; // rotate
gameObject.transform.Rotate(_rotation); // store new mouse position
_mouseReference = Input.mousePosition;
}
}
void OnMouseDown()
{
// rotating flag
_isRotating = true;
// store mouse position
_mouseReference = Input.mousePosition;
}
void OnMouseUp()
{
// rotating flag
_isRotating = false;
}
}
edited code:-
using UnityEngine;
using System.Collections;
[RequireComponent(typeof(MeshRenderer))]
public class pt : MonoBehaviour
{
#region ROTATE
private float _sensitivity = 1f;
private Vector3 _mouseReference;
private Vector3 _mouseOffset;
private Vector3 _rotation = Vector3.zero;
private bool _isRotating;
private Quaternion original;
#endregion
void start(){
original = transform.rotation;
}
void Update()
{
if(_isRotating)
{
// offset
_mouseOffset = (Input.mousePosition - _mouseReference); // apply rotation
_rotation.y = -(_mouseOffset.x + _mouseOffset.y) * _sensitivity; // rotate
gameObject.transform.Rotate(_rotation); // store new mouse position
_mouseReference = Input.mousePosition;
}
}
public void OnMouseDown()
{
// rotating flag
_isRotating = true;
// store mouse position
_mouseReference = Input.mousePosition;
}
public void OnMouseUp()
{
// rotating flag
_isRotating = false;
transform.rotation = original;
}
}
"im trying to rotate a 3d model of a sofa and return to its starting rotation.but if i used this code " whenever if i stopped touching the sofa , it turns to **backside of sofa"**
i want it to return to initial rotation.u can see initally this is how the sofa looks like and if i stopped touching it returns to its backside of sofa. i want it to return to its front side again if i stopped rotation
I want the cube to return back to its original position when the user
stopped touching the cube
I can't exactly tell which part of this you are struggling with but you can simply get the position of the GameObject in the Start or Awake function then set the transform.position to that value when OnMouseUp is called.
private Vector3 originalPos;
void Start()
{
//Get the original position
originalPos = transform.position;
}
void OnMouseUp()
{
_isRotating = false;
//Reset GameObject to the original position
transform.position = originalPos;
}
EDIT:
For rotation, it is also the-same thing. Just use Quaternion and transform.rotation instead of Vector3 and transform.position.
private Quaternion originalPos;
void Start()
{
//Get the original rotation
originalPos = transform.rotation;
}
void OnMouseUp()
{
_isRotating = false;
//Reset GameObject to the original rotation
transform.rotation = originalPos;
}
You still have to incorporate that into the original code from your answer. If this is something you can't do then consider watching Unity's scripting tutorial here.
I'm making a game in which the player controls two different characters (each one has its own empty object with a camera as child), and switchs one or another by pressing the control key. The thing is, I'm trying to make a little transition between both characters cameras by using another camera, so it doesn't just teleports between one and another but I can't seem to do it. I tried with lerp but I don't know if I got it right, so I read and tried Vector3.MoveTowards but still couldn't do it. This is my code so far (the while is because a last-moment-braindead I had):
public class CameraController : MonoBehaviour
{
public Camera cam1;
public Camera cam2;
public Camera movingCamera;
public bool isCurrentPlayer;
public Transform target1;
public Transform target2;
public float speed = 0.2f;
void FixedUpdate()
{
float step = speed * Time.deltaTime;
if (Input.GetButtonDown("Control"))
{
if (isCurrentPlayer)
{
movingCamera.enabled = true;
cam2.enabled = false;
while (transform.position != target1.position)
{
transform.position = Vector3.MoveTowards(transform.position, target1.position, step);
}
if (transform.position == target1.transform.position)
{
movingCamera.enabled = false;
cam1.enabled = true;
}
isCurrentPlayer = false;
}
else if (!isCurrentPlayer)
{
movingCamera.enabled = true;
cam1.enabled = false;
while (transform.position != target2.position)
{
transform.position = Vector3.MoveTowards(transform.position, target2.position, step);
}
if (transform.position == target2.transform.position)
{
movingCamera.enabled = false;
cam2.enabled = true;
}
isCurrentPlayer = true;
}
}
}
I'm curious about two things. Why did you use FixedUpdate to manage your updates? This isn't physics code. Is there a particular reason you are using multiple cameras? If I may, I propose the following changes.
You can simply make use of the main camera instead of multiple cameras. Additionally, you can increase the number of player objects you can toggle through by using an array of player GameObjects, and by changing the input parameters to left control and right control, you can toggle between next player and previous player to navigate bi-directionally through the array of players.
Here's my example code that implements these changes (tested and works, though improvements can be made.)
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
// Attached to Main Camera
public class CameraController : MonoBehaviour {
// set manually in inspector
public GameObject[] players;
public float movementSpeed = 1.0f;
public float rotationSpeed = 1.0f;
private int currentPlayer;
private float startTime;
private float distanceToPlayer;
private Vector3 startPosition;
private Quaternion startOrientation;
// Use this for initialization
void Start () {
currentPlayer = 0;
ResetCamera();
}
// Update is called once per frame
void Update () {
float distanceCovered;
float rotationCovered;
float fractionTraveled;
// switch to previous
if (Input.GetButtonDown("left ctrl")) {
if (currentPlayer == 0) currentPlayer = players.Length - 1;
else currentPlayer--;
ResetCamera();
}
// switch to nextPlayer
if (Input.GetButtonDown("right ctrl")) {
if (currentPlayer == players.Length - 1) currentPlayer = 0;
else currentPlayer++;
ResetCamera();
}
// Keep moving camera
if (transform.position != players[currentPlayer].transform.position)
{
distanceCovered = (Time.time - startTime) * movementSpeed;
fractionTraveled = distanceCovered / distanceToPlayer;
rotationCovered = (Time.time - startTime) * rotationSpeed;
// Lerp to player position
transform.position = Vector3.Lerp(
startPosition,
players[currentPlayer].transform.position,
fractionTraveled
);
// match player orientation
transform.rotation = Quaternion.RotateTowards(
transform.rotation,
players[currentPlayer].transform.rotation,
rotationCovered
);
// Stop moving camera
} else {
// Match orientation
if (transform.rotation != players[currentPlayer].transform.rotation)
transform.rotation = players[currentPlayer].transform.rotation;
// Set parent transform to current player
transform.parent = players[currentPlayer].transform;
}
}
void ResetCamera() {
transform.parent = null;
startTime = Time.time;
startPosition = transform.position;
startOrientation = transform.rotation;
distanceToPlayer = Vector3.Distance(
transform.position,
players[currentPlayer].transform.position
);
}
}
Obviously the values would need to be tweaked, and the movement algorithm is pretty basic. Crude but function. You can also add player movement code into the camera, just make sure it points to players[currentPlayer] and it will work for each of your player objects without having to use additional scripts unless there is a reason to do so.
Feel free to use this code. Like I said, it works. However, should you choose to do so, it can easily be modified to function like your original code simply by removing the array and reinstating the individual GameObjects.
transform.position points to the position of CameraController game object. If you want to move movingCamera you probably want to use movingCamera.transform.position. Also keep in mind that in your script the MoveTowards() would only fire when you are pressing your "Control" button.
As memBrain said it would be the best practice to use only one camera for this - visually it would look the same.
The script should look something like this:
// Assuming target1 is player 1 and target2 is player 2
private float snapThreshold = 0.1f;
private Vector3 movingCameraDestination = Vector3.zero;
void FixedUpdate()
{
if(Input.GetButtonDown("Control"))
{
if(isCurrentPlayer)
{
//Set position of transition camera to player 1 and set it's destination to player's 2 position
movingCamera.transform.position = player1.position;
movingCameraDestination = player2.position;
//Disable player 1 camera and enable transition camera
cam1.enabled = false;
movingCamera.enabled = true;
}
else
{
//Set position of transition camera to player 21 and set it's destination to player's 1 position
movingCamera.transform.position = player2.position;
movingCameraDestination = player1.position;
//Disable player 1 camera and enable transition camera
cam2.enabled = false;
movingCamera.enabled = true;
}
}
//If transition camera is enabled and its destination is not Vector3.zero - move it
if(movingCameraDestination != Vector3.zero && movingCamera.enabled)
{
movingCamera.transform.position = Vector3.Lerp(movingCamera.transform.position, movingCameraDestination, speed * Time.deltaTime);
//If the distance between transition camera and it's destination is smaller or equal to threshold - snap it to destination position
if(Vector3.Distance(movingCamera.transform.position, movingCameraDestination) <= snapThreshold)
{
movingCamera.transform.position = movingCameraDestination;
}
//If transition camera reached it's destination set it's destination to Vector3.zero and disable it
if(movingCamera.transform.position == movingCameraDestination)
{
movingCameraDestination = Vector3.zero;
movingCamera.enabled = false;
}
}
}
I try to write a script that show the sprite that follows by finger. But I need to this sprite can move only on specified distance from the anchor and only between specified angles. Now, I have the next code:
public class GunPowerController : MonoBehaviour {
public GameObject _fingerprint;
public Transform _anchor;
public Gun _gun;
public float _maxPower = 1f;
public float _maxAngle = 15f;
public float _minAngle = 0f;
private Camera _camera;
private GameObject _fingerprintInstance;
void Awake()
{
_maxPower = Mathf.Abs(_maxPower);
_camera = Camera.main;
}
// Update is called once per frame
void Update ()
{
if (Input.GetMouseButtonDown(0))
{
var touchWorldPosition = _camera.ScreenToWorldPoint(Input.mousePosition);
var hitInfo = Physics2D.Raycast(touchWorldPosition, Vector2.zero);
if (hitInfo && hitInfo.transform.gameObject.Equals(gameObject))
{
touchWorldPosition.z = transform.position.z;
_fingerprintInstance = (GameObject)Instantiate(_fingerprint, touchWorldPosition, Quaternion.identity);
}
}
else if (_fingerprintInstance != null)
{
if (Input.GetMouseButtonUp(0))
{
Destroy(_fingerprintInstance);
}
else
{
var touchWorldPosition = _camera.ScreenToWorldPoint(Input.mousePosition);
Move(touchWorldPosition);
}
}
}
private void Move(Vector3 target)
{
target.z = transform.position.z;
Vector3 distance = target - _anchor.position;
Vector3 axis = _anchor.position;
axis.x = -1f;
float angle = Vector3.Angle(axis, distance) * Mathf.Sign(distance.y - axis.y);
if (distance.sqrMagnitude > _maxPower * _maxPower)
{
distance.Normalize();
distance *= _maxPower;
target = _anchor.position + distance;
}
if(_minAngle > angle)
{
//Here I need to hold vector rotation while the user doesn't
//return to the available space between angles.
}
else if (_maxAngle < angle)
{
//Here I need to hold vector rotation while the user doesn't
//return to the available space between angles.
}
_fingerprintInstance.transform.position = Vector3.Lerp(_fingerprintInstance.transform.position, target,
10f * Time.deltaTime);
}
}
I try to rotate a vector target on difference _min|maxAngle - angle but it works wrong. How to make it?
The current problem:
P.S. I retried a lot of variants but coldn't make it. If it needs some details, pls, write me I'll post.
You should use Mathf.Clamp .
Link :https://docs.unity3d.com/ScriptReference/Mathf.Clamp.html