Develop Reference

Why the object keep moving up nonstop and how to move it forward fast when it finished moving up?

I want to move the object up smooth slowly from it's current position on y 50.01 to new position 51.255
But the object keep moving up nonstop.
using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;
public class RoboSphereWindowBreakInteraction : MonoBehaviour
{
public Transform target;
public AudioClip audioClip;
public float speed;
private bool hasStarted = false;
private Animator anim;
void Update()
{
if ((Input.GetKeyDown(KeyCode.B) || (hasStarted == true)))
{
float step = speed * Time.deltaTime; // calculate distance to move
transform.position = Vector3.MoveTowards(transform.position, target.position, step);
hasStarted = true;
}
}
private void OnTriggerEnter(Collider other)
{
if (other.gameObject.name == "Square 1")
{
GetComponent<Rigidbody>().isKinematic = false;
hasStarted = false;
Destroy(GameObject.Find("Wall_Window_Long_03"));
}
}
public void ActivateRoboSphere()
{
foreach(Transform child in transform)
{
if(child.name == "Camera")
{
RepositionCamera(child);
}
}
anim = GetComponent<Animator>();
anim.enabled = true;
GetComponent<FPEInteractableActivateScript>().interactionString = "";
FPEInteractionManagerScript.Instance.BeginCutscene();
StartCoroutine(PlayAudio());
}
private void RepositionCamera(Transform camera)
{
var Eyes = GameObject.Find("eyeDome");
camera.position = Eyes.transform.position + Eyes.transform.forward;
camera.LookAt(Eyes.transform);
camera.GetComponent<Camera>().enabled = true;
}
IEnumerator PlayAudio()
{
AudioSource audio = GetComponent<AudioSource>();
audio.clip = audioClip;
audio.Play();
yield return new WaitForSeconds(audio.clip.length);
var rotation = Quaternion.LookRotation(target.position - transform.position);
StartCoroutine(Spin(3f, rotation, () =>
{
anim.SetBool("Roll_Anim", true);
}));
StartCoroutine(MoveFromTo(transform, transform.position, new Vector3(transform.position.x,
transform.position.y + 51.255f, transform.position.z), 3f));
}
IEnumerator Spin(float lerpTime, Quaternion rotation, Action whenDone)
{
float elapsedTime = 0f;
while (elapsedTime <= lerpTime)
{
transform.rotation = Quaternion.Slerp(transform.rotation, rotation, elapsedTime / lerpTime);
elapsedTime += Time.deltaTime;
yield return null;
}
whenDone?.Invoke();
}
// 51.255
IEnumerator MoveFromTo(Transform objectToMove, Vector3 a, Vector3 b, float speed)
{
float step = (speed / (a - b).magnitude) * Time.fixedDeltaTime;
float t = 0;
while (t <= 1.0f)
{
t += step; // Goes from 0 to 1, incrementing by step each time
objectToMove.position = Vector3.Lerp(a, b, t); // Move objectToMove closer to b
yield return new WaitForFixedUpdate(); // Leave the routine and return here in the next frame
}
objectToMove.position = b;
}
}
I did :
StartCoroutine(MoveFromTo(transform, transform.position, new Vector3(transform.position.x,
transform.position.y + 51.255f, transform.position.z), 3f));
But the object keep moving up nonstop. Or at least very high and not like I wanted from 50.01 to 51.255
And when the object reaching the height of 51.255 then I want it to move fast smooth forward to target.

In your code replace this part:
StartCoroutine(MoveFromTo(transform, transform.position, new Vector3(transform.position.x,
transform.position.y + 51.255f, transform.position.z), 3f));
with this:
StartCoroutine(MoveFromTo(transform, transform.position, new Vector3(transform.position.x,
51.255f, transform.position.z), 3f));

Rotation smooth in editor but isn't in device

I have a 3D object that I want to rotate with mouse/finger swipe, so I made the script below.
The object's rotation looks smooth on editor, but when playing the game on real device (android), the rotation didn't follow the finger movement immediately, it takes some milliseconds to follow finger, it isn't smooth and the controls become hard and frustrating!
float sensitivity = 0.8f;
Vector2 firstPressPos;
Vector2 secondPressPos;
void Update()
{
if (Input.GetMouseButtonDown(0))
{
//save began touch 2d point
firstPressPos = new Vector3(Input.mousePosition.x, Input.mousePosition.y);
}
if (Input.GetMouseButton(0))
{
//save ended touch 2d point
secondPressPos = new Vector3(Input.mousePosition.x, Input.mousePosition.y);
if (firstPressPos != secondPressPos)
{
float RotX = Input.GetAxis("Mouse X") * sensitivity * Time.deltaTime;
float RotY = Input.GetAxis("Mouse Y") * sensitivity * Time.deltaTime;
transform.RotateAround(Vector3.up, RotX);
transform.RotateAround(Vector3.right, -RotY);
}
}
}

try this code
// Screen Touches
Vector2?[] oldTouchPositions = {
null,
null
};
// Rotation Speed
public float rotSpeed = 0.5f;
public void Update()
{
if (Input.touchCount == 0)
{
oldTouchPositions[0] = null;
oldTouchPositions[1] = null;
}
else if (Input.touchCount == 1)
{
if (oldTouchPositions[0] == null || oldTouchPositions[1] != null)
{
oldTouchPositions[0] = Input.GetTouch(0).position;
oldTouchPositions[1] = null;
}
else
{
Vector2 newTouchPosition = Input.GetTouch(0).position;
float distanceX = (oldTouchPositions[0] - newTouchPosition).Value.x;
float distanceY = (oldTouchPositions[0] - newTouchPosition).Value.y;
float rotX = distanceX * rotSpeed * Mathf.Deg2Rad;
float rotY = distanceY * rotSpeed * Mathf.Deg2Rad;
transform.Rotate(Vector3.up, rotX * 5, Space.Self);
transform.Rotate(Vector3.left, rotY * 5, Space.Self);
oldTouchPositions[0] = newTouchPosition;
}
}
else
{
if (oldTouchPositions[1] == null)
{
oldTouchPositions[0] = Input.GetTouch(0).position;
oldTouchPositions[1] = Input.GetTouch(1).position;
}
else
{
}
}
}

Here's a script I found a few years back that manipulates X axis spin with Mouse or Touches. It seems to work well with touches, but not as good with Mouse. Try it and let me know if it behaves a bit better. This one should adjust the spinning speed dynamically:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class SpinDrag : MonoBehaviour {
float f_lastX = 0.0f;
float f_difX = 0.5f;
float f_steps = 0.0f;
int i_direction = 1;
// Use this for initialization
void Start()
{
}
// Update is called once per frame
void Update()
{
if (Input.GetMouseButtonDown(0))
{
f_difX = 0.0f;
}
else if (Input.GetMouseButton(0))
{
f_difX = Mathf.Abs(f_lastX - Input.GetAxis("Mouse X"));
if (f_lastX < Input.GetAxis("Mouse X"))
{
i_direction = -1;
transform.Rotate(Vector3.up, -f_difX);
}
if (f_lastX > Input.GetAxis("Mouse X"))
{
i_direction = 1;
transform.Rotate(Vector3.up, f_difX);
}
f_lastX = -Input.GetAxis("Mouse X");
}
else
{
if (f_difX > 0.5f) f_difX -= 0.05f;
if (f_difX < 0.5f) f_difX += 0.05f;
transform.Rotate(Vector3.up, f_difX * i_direction);
}
}
}

How do I change the colour of the whole object once its trigger has been hit?

I am making a chemistry molecule game. So far I have a molecule with a trigger on a receptor site and when I drag the correct atom close to this site, the atom changes colour and attaches. How do I change the colour of the whole molecule (not just the trigger/receptor site) once this atom is attached?
Code used for this part of my game is from: https://gamedev.stackexchange.com/questions/123929/snap-an-object-to-another-object
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class Snap : MonoBehaviour
{
public string partnerTag;
public float closeVPDist = 0.05f;
public float farVPDist = 1;
public float moveSpeed = 40.0f;
public float rotateSpeed = 90.0f;
private Vector3 screenPoint;
private Vector3 offset;
private bool isSnaped;
Color color = new Color(2, 1, 3);
float dist = Mathf.Infinity;
Color normalColor;
GameObject partnerGO;
// Use this for initialization
void Start()
{
normalColor = GetComponent<Renderer>().material.color;
partnerGO = GameObject.FindGameObjectWithTag(partnerTag);
}
void OnMouseDown()
{
screenPoint = Camera.main.WorldToScreenPoint(transform.position);
offset = transform.position - Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x, Input.mousePosition.y, screenPoint.z));
Cursor.visible = false;
}
void OnMouseDrag()
{
//transform.SetParent(null);
Vector3 curScreenPoint = new Vector3(Input.mousePosition.x, Input.mousePosition.y, screenPoint.z);
Vector3 curPosition = Camera.main.ScreenToWorldPoint(curScreenPoint) + offset;
transform.position = curPosition;
Vector3 partnerPos = Camera.main.WorldToViewportPoint(partnerGO.transform.position);
Vector3 myPos = Camera.main.WorldToViewportPoint(transform.position);
dist = Vector2.Distance(partnerPos, myPos);
GetComponent<Renderer>().material.color = (dist < closeVPDist) ? color : normalColor;
}
void OnMouseUp()
{
Cursor.visible = true;
if (dist < closeVPDist)
{
transform.SetParent(partnerGO.transform);
StartCoroutine(InstallPart());
isSnaped = true;
}
if (dist > farVPDist)
{
// transform.SetParent(null);
}
}
IEnumerator InstallPart()
{
while (transform.localPosition != Vector3.right || transform.localRotation != Quaternion.identity)
{
transform.localPosition = Vector3.MoveTowards(transform.localPosition, Vector3.right, Time.deltaTime * moveSpeed);
transform.localRotation = Quaternion.RotateTowards(transform.localRotation, Quaternion.identity, Time.deltaTime * rotateSpeed);
yield return new WaitForEndOfFrame();
}
}
}

In OnMouseUp, add a line to change the material/colour of your molecule. Code:
public Color newColor;
public GameObject objectToChangeColour;
void OnMouseUp()
{
Cursor.visible = true;
if (dist < closeVPDist)
{
transform.SetParent(partnerGO.transform);
StartCoroutine(InstallPart());
isSnaped = true;
objectToChangeColour.GetComponent<Renderer>().material.color = newColour; // Change the color of object to the newColour
}
if (dist > farVPDist)
{
// transform.SetParent(null);
}
}
And simple change objectToChangeColour to the object you want to change its color (parentGO/molecule/etc.), and newColour to the new colour.

Unity, First time using a script in c# it's working fine then after few times getting null exception why?

I have a ThirdPersonController in the Hierarchy.
Then i'm adding to it a Nav Mesh Agent.
The dragging to it the scrip in c#.
Then in the Inspector i'm adding in the script part the agent.
Then baking.
And it was working more or less with some stuttering but was working.
The character ThirdPersonController walked automatic to specific point in this case to a cylinder i have on my Terrain.
I can't figure out why first time/s it's working fine but then now i have this error.
This is the script i'm using for the automatic walk:
using System.Collections;
using UnityStandardAssets.Characters.ThirdPerson;
public class BasicAi : MonoBehaviour {
public NavMeshAgent agent;
public ThirdPersonCharacter character;
public enum State {
PATROL,
CHASE
}
public State state;
private bool alive;
// Variables for patrolling
public GameObject[] waypoints;
private int waypointInd = 0;
public float patrolSpeed = 0.5f;
// Variable for chasing
public float chaseSpeed = 1f;
public GameObject target;
// Use this for initialization
void Start () {
agent = GetComponent<NavMeshAgent> ();
character = GetComponent<ThirdPersonCharacter>();
agent.updatePosition = true;
agent.updateRotation = false;
state = BasicAi.State.PATROL;
alive = true;
StartCoroutine ("FSM");
}
IEnumerator FSM()
{
while (alive)
{
switch (state)
{
case State.PATROL:
Patrol ();
break;
case State.CHASE:
Chase ();
break;
}
yield return null;
}
}
void Patrol()
{
agent.speed = patrolSpeed;
if (Vector3.Distance (this.transform.position, waypoints [waypointInd].transform.position) >= 2) {
agent.SetDestination (waypoints [waypointInd].transform.position);
character.Move (agent.desiredVelocity, false, false);
} else if (Vector3.Distance (this.transform.position, waypoints [waypointInd].transform.position) <= 2) {
waypointInd += 1;
if (waypointInd > waypoints.Length) {
waypointInd = 0;
}
}
else
{
character.Move (Vector3.zero, false, false);
}
}
void Chase()
{
agent.speed = chaseSpeed;
agent.SetDestination (target.transform.position);
character.Move (agent.desiredVelocity, false, false);
}
void OnTriggerEnter(Collider coll)
{
if (coll.tag == "Player")
{
state = BasicAi.State.CHASE;
target = coll.gameObject;
}
}
// Update is called once per frame
void Update () {
}
And the exception error message is:
NullReferenceException: Object reference not set to an instance of an object
UnityStandardAssets.Characters.ThirdPerson.ThirdPersonCharacter.CheckGroundStatus () (at Assets/Standard Assets/Characters/ThirdPersonCharacter/Scripts/ThirdPersonCharacter.cs:215)
UnityStandardAssets.Characters.ThirdPerson.ThirdPersonCharacter.Move (Vector3 move, Boolean crouch, Boolean jump) (at Assets/Standard Assets/Characters/ThirdPersonCharacter/Scripts/ThirdPersonCharacter.cs:54)
BasicAi.Patrol () (at Assets/My Scripts/BasicAi.cs:72)
BasicAi+<FSM>c__Iterator0.MoveNext () (at Assets/My Scripts/BasicAi.cs:55)
UnityEngine.MonoBehaviour:StartCoroutine(String)
BasicAi:Start() (at Assets/My Scripts/BasicAi.cs:43)
When i click on the error message in the Console window it's going to the ThirdPersonCharacter script. The script is from in Unity.
The error is on the line:
m_Animator.applyRootMotion = true;
And this is the ThirdPersonCharacter script where the error is:
using UnityEngine;
namespace UnityStandardAssets.Characters.ThirdPerson
{
[RequireComponent(typeof(Rigidbody))]
[RequireComponent(typeof(CapsuleCollider))]
[RequireComponent(typeof(Animator))]
public class ThirdPersonCharacter : MonoBehaviour
{
[SerializeField] float m_MovingTurnSpeed = 360;
[SerializeField] float m_StationaryTurnSpeed = 180;
[SerializeField] float m_JumpPower = 12f;
[Range(1f, 4f)][SerializeField] float m_GravityMultiplier = 2f;
[SerializeField] float m_RunCycleLegOffset = 0.2f; //specific to the character in sample assets, will need to be modified to work with others
[SerializeField] float m_MoveSpeedMultiplier = 1f;
[SerializeField] float m_AnimSpeedMultiplier = 1f;
[SerializeField] float m_GroundCheckDistance = 0.1f;
Rigidbody m_Rigidbody;
Animator m_Animator;
bool m_IsGrounded;
float m_OrigGroundCheckDistance;
const float k_Half = 0.5f;
float m_TurnAmount;
float m_ForwardAmount;
Vector3 m_GroundNormal;
float m_CapsuleHeight;
Vector3 m_CapsuleCenter;
CapsuleCollider m_Capsule;
bool m_Crouching;
void Start()
{
m_Animator = GetComponent<Animator>();
m_Rigidbody = GetComponent<Rigidbody>();
m_Capsule = GetComponent<CapsuleCollider>();
m_CapsuleHeight = m_Capsule.height;
m_CapsuleCenter = m_Capsule.center;
m_Rigidbody.constraints = RigidbodyConstraints.FreezeRotationX | RigidbodyConstraints.FreezeRotationY | RigidbodyConstraints.FreezeRotationZ;
m_OrigGroundCheckDistance = m_GroundCheckDistance;
}
public void Move(Vector3 move, bool crouch, bool jump)
{
// convert the world relative moveInput vector into a local-relative
// turn amount and forward amount required to head in the desired
// direction.
if (move.magnitude > 1f) move.Normalize();
move = transform.InverseTransformDirection(move);
CheckGroundStatus();
move = Vector3.ProjectOnPlane(move, m_GroundNormal);
m_TurnAmount = Mathf.Atan2(move.x, move.z);
m_ForwardAmount = move.z;
ApplyExtraTurnRotation();
// control and velocity handling is different when grounded and airborne:
if (m_IsGrounded)
{
HandleGroundedMovement(crouch, jump);
}
else
{
HandleAirborneMovement();
}
ScaleCapsuleForCrouching(crouch);
PreventStandingInLowHeadroom();
// send input and other state parameters to the animator
UpdateAnimator(move);
}
void ScaleCapsuleForCrouching(bool crouch)
{
if (m_IsGrounded && crouch)
{
if (m_Crouching) return;
m_Capsule.height = m_Capsule.height / 2f;
m_Capsule.center = m_Capsule.center / 2f;
m_Crouching = true;
}
else
{
Ray crouchRay = new Ray(m_Rigidbody.position + Vector3.up * m_Capsule.radius * k_Half, Vector3.up);
float crouchRayLength = m_CapsuleHeight - m_Capsule.radius * k_Half;
if (Physics.SphereCast(crouchRay, m_Capsule.radius * k_Half, crouchRayLength, Physics.AllLayers, QueryTriggerInteraction.Ignore))
{
m_Crouching = true;
return;
}
m_Capsule.height = m_CapsuleHeight;
m_Capsule.center = m_CapsuleCenter;
m_Crouching = false;
}
}
void PreventStandingInLowHeadroom()
{
// prevent standing up in crouch-only zones
if (!m_Crouching)
{
Ray crouchRay = new Ray(m_Rigidbody.position + Vector3.up * m_Capsule.radius * k_Half, Vector3.up);
float crouchRayLength = m_CapsuleHeight - m_Capsule.radius * k_Half;
if (Physics.SphereCast(crouchRay, m_Capsule.radius * k_Half, crouchRayLength, Physics.AllLayers, QueryTriggerInteraction.Ignore))
{
m_Crouching = true;
}
}
}
void UpdateAnimator(Vector3 move)
{
// update the animator parameters
m_Animator.SetFloat("Forward", m_ForwardAmount, 0.1f, Time.deltaTime);
m_Animator.SetFloat("Turn", m_TurnAmount, 0.1f, Time.deltaTime);
m_Animator.SetBool("Crouch", m_Crouching);
m_Animator.SetBool("OnGround", m_IsGrounded);
if (!m_IsGrounded)
{
m_Animator.SetFloat("Jump", m_Rigidbody.velocity.y);
}
// calculate which leg is behind, so as to leave that leg trailing in the jump animation
// (This code is reliant on the specific run cycle offset in our animations,
// and assumes one leg passes the other at the normalized clip times of 0.0 and 0.5)
float runCycle =
Mathf.Repeat(
m_Animator.GetCurrentAnimatorStateInfo(0).normalizedTime + m_RunCycleLegOffset, 1);
float jumpLeg = (runCycle < k_Half ? 1 : -1) * m_ForwardAmount;
if (m_IsGrounded)
{
m_Animator.SetFloat("JumpLeg", jumpLeg);
}
// the anim speed multiplier allows the overall speed of walking/running to be tweaked in the inspector,
// which affects the movement speed because of the root motion.
if (m_IsGrounded && move.magnitude > 0)
{
m_Animator.speed = m_AnimSpeedMultiplier;
}
else
{
// don't use that while airborne
m_Animator.speed = 1;
}
}
void HandleAirborneMovement()
{
// apply extra gravity from multiplier:
Vector3 extraGravityForce = (Physics.gravity * m_GravityMultiplier) - Physics.gravity;
m_Rigidbody.AddForce(extraGravityForce);
m_GroundCheckDistance = m_Rigidbody.velocity.y < 0 ? m_OrigGroundCheckDistance : 0.01f;
}
void HandleGroundedMovement(bool crouch, bool jump)
{
// check whether conditions are right to allow a jump:
if (jump && !crouch && m_Animator.GetCurrentAnimatorStateInfo(0).IsName("Grounded"))
{
// jump!
m_Rigidbody.velocity = new Vector3(m_Rigidbody.velocity.x, m_JumpPower, m_Rigidbody.velocity.z);
m_IsGrounded = false;
m_Animator.applyRootMotion = false;
m_GroundCheckDistance = 0.1f;
}
}
void ApplyExtraTurnRotation()
{
// help the character turn faster (this is in addition to root rotation in the animation)
float turnSpeed = Mathf.Lerp(m_StationaryTurnSpeed, m_MovingTurnSpeed, m_ForwardAmount);
transform.Rotate(0, m_TurnAmount * turnSpeed * Time.deltaTime, 0);
}
public void OnAnimatorMove()
{
// we implement this function to override the default root motion.
// this allows us to modify the positional speed before it's applied.
if (m_IsGrounded && Time.deltaTime > 0)
{
Vector3 v = (m_Animator.deltaPosition * m_MoveSpeedMultiplier) / Time.deltaTime;
// we preserve the existing y part of the current velocity.
v.y = m_Rigidbody.velocity.y;
m_Rigidbody.velocity = v;
}
}
void CheckGroundStatus()
{
RaycastHit hitInfo;
#if UNITY_EDITOR
// helper to visualise the ground check ray in the scene view
Debug.DrawLine(transform.position + (Vector3.up * 0.1f), transform.position + (Vector3.up * 0.1f) + (Vector3.down * m_GroundCheckDistance));
#endif
// 0.1f is a small offset to start the ray from inside the character
// it is also good to note that the transform position in the sample assets is at the base of the character
if (Physics.Raycast(transform.position + (Vector3.up * 0.1f), Vector3.down, out hitInfo, m_GroundCheckDistance))
{
m_GroundNormal = hitInfo.normal;
m_IsGrounded = true;
m_Animator.applyRootMotion = true;
}
else
{
m_IsGrounded = false;
m_GroundNormal = Vector3.up;
m_Animator.applyRootMotion = false;
}
}
}
}

Jumping at an angle with Unity and C#

I'm working on a project where I'm trying to make my character move by jumping at an angle. Right now during the frame updates, the character will pivot back and forth and when the right key is pressed, they will jump. This code causes them to jump at an angle, but they always return to their original position.
Additionally, I have two characters who start on opposite sides of the stage, but when I start the game they teleport to the same position. I've spent a lot of time reviewing my code but I can't seem to get this to work. Any help you can provide?
using UnityEngine;
using System.Collections;
public class Freg : MonoBehaviour {
public GameObject Tounge;
public float gravity;
public float tempScale = 1;
public float MaxJump = 8f;
public float MinJump = 0.1f;
static float yVector = 0;
static float xVector = 0;
static bool grounded = true;
bool isleft = false;
Vector3 farthestleft;
Vector3 farthestright;
// Use this for initialization
void Start () {
farthestleft = new Vector3 (-33.7f, 50.2f, 24.8f);
farthestright = new Vector3 (22.56f, 54.83f, -15.12f);
}
void OnTriggerEnter (Collider other) {
if (other.GetComponent<Collider> ().tag == "Ground") {
grounded = true;
yVector = 0;
//xVector = 0;
Vector3 onGround = new Vector3 (transform.position.x, -4.86f, transform.position.z);
transform.position = onGround;
} else
grounded = false;
}
// Update is called once per frame
void Update () {
/*if (Input.GetKey (KeyCode.UpArrow) == true) {
Tounge.transform.localScale.Set (1, 0.5f, 1);
} else {
Tounge.transform.localScale.Set (1, 1, 1);
}*/
if (grounded == false) {
yVector -= gravity;
}
if (Input.GetKeyDown (KeyCode.UpArrow) == true && grounded == true) {
MinJump += 0.5f;
} else if (MinJump > 0.1f){
yVector += MinJump;
xVector += MinJump;
MinJump = 0.1f;
grounded = false;
}
Vector3 stuff = new Vector3 (transform.localPosition.y + xVector, transform.position.y + yVector, transform.position.z);
transform.position = stuff;
float t = Mathf.PingPong (Time.time * 0.5f * 2.0f, 1.0f);
transform.eulerAngles = Vector3.Lerp (farthestright, farthestleft, t);
}
}

it looks like you should update the current position during the if statements, rather than after that way on each update, the actual position is moving based on the decision rather than just the end of the loop.