I make a character move on the surface of a circle. I let the camera move and rotate follow character. But the camera move and rotate very jerky. If I increase the value of the third parameter, the shock increases. and to reduce the value of the third parameter, the camera does not rotate to keep up the character. Help me fix it
My Code Camera Follow Player
public class CameraFollow : MonoBehaviour
{
public Transform player;
GameController gc;
public float speed = 2;
Vector3 pos = new Vector3 (0, 0, -10);
// Use this for initialization
void Start ()
{
gc = FindObjectOfType (typeof(GameController)) as GameController;
}
void FixedUpdate ()
{
if (gc.gameState == GameController.GameState.playing || gc.gameState == GameController.GameState.changeWave) {
transform.position = player.position + pos;
transform.rotation = Quaternion.Slerp (transform.rotation,
player.transform.rotation,
speed * Time.deltaTime);
}
}
}
Setting the position of a transform inside of FixedUpdate is a red flag for sure, especially when you're reporting that it's "jerky". Fixed update happens at an irregular interval compared to the frames displayed. This is because Physics needs to update using a fixed time step. The reason why this is the case is out of scope for this question.
Long story short, try changing FixedUpdate to Update and that should fix things looking "jerky".
Let me know if this doesn't work and I'll look for other possible causes.
If you are using a Rigidbody2D to move the character, make sure to set its Interpolate property to 'Interpolate'. This should fix it.
Related
The player goes on top of some objects when he walks toward them, how can I prevent that from happening? Here is an example image of that:
I did not jump to be on the couch but yet it still goes on top of it when I walk to it. Here is my player information:
I don't want to change the player's movement, but I don't want it to go on top of objects when I'm walking.
Make the Step Offset in character controller 0. More info on it here
The character controller Step Offset solves this problem by increasing it value, but you may find that after adding the value, the character controller does not generate any gravitational force on its own.
To solve the problem of gravity, it is enough to first get the component.
private CharacterController controller;
public void Start()
{
controller = GetComponent<CharacterController>();
}
And then apply gravity to the object with the following instructions, you have already obtained the moveInput axis with the Input.GetAxis method.
private Vector3 velocity;
private void Update()
{
var moveInput = new Vector3(Input.GetAxis("Horizontal"), 0f, Input.GetAxis("Vertical"));
// === AFTER CALCULATING MOVE INPUT
controller.Move(moveInput*Time.deltaTime);
velocity += Physics.gravity * Time.deltaTime;
controller.Move(velocity); // Apply Gravity
if (controller.isGrounded) velocity = Vector3.zero;
}
My character is a car and I try to rotate it the direction it move, so far so good I succeeded to do that but once I stop moving the character flips back to the direction it was on the start.
Also how can I make my turns from side to the opposite site smooth ?
Here is my code so far:
[SerializeField] float driveSpeed = 5f;
//state
Rigidbody2D myRigidbody;
// Start is called before the first frame update
void Start()
{
myRigidbody = GetComponent<Rigidbody2D>();
}
// Update is called once per frame
void Update()
{
Move();
}
private void Move()
{
//Control of velocity of the car
float HorizontalcontrolThrow = CrossPlatformInputManager.GetAxis("Horizontal"); // Value between -1 to 1
float VerticalcontrolThrow = CrossPlatformInputManager.GetAxis("Vertical"); // Value between -1 to 1
Vector2 playerVelocity = new Vector2(HorizontalcontrolThrow * driveSpeed, VerticalcontrolThrow * driveSpeed);
myRigidbody.velocity =playerVelocity;
**//Direction of the car**
Vector2 direction = new Vector2(HorizontalcontrolThrow, VerticalcontrolThrow);
float angle = Mathf.Atan2(direction.y, direction.x) * Mathf.Rad2Deg;
myRigidbody.rotation = angle;
}
I'm not sure about this, but maybe that last line "myRigidbody.rotation = angle" being called every frame is what is making your car reset its rotation.
Maybe change it to "myRigidbody.rotation *= angle" or "myRigidbody.rotation += angle".
It looks like it may be because HorizontalcontrolThrow and VerticalcontrolThrow are going to be reset when you release the controls. If it's resetting to its original orientation, then what's happening is that until you move, those two values are going to be at their default value. You then move and it affects the rotation. But when you release the controls, those values are back to the starting values again, and so is your rotation.
What you therefore need to do is try to separate the HorizontalcontrolThrow and VerticalcontrolThrow from the rest of the code, which should only be activated when at least one of these two variables are not at their default setting (I can't remember what the axis functions return at the moment).
Edit:
An IF statement should suffice (some rough pseudo code):
if (horizontalAxis != default || verticalAxis != default)
{
Rotate/Move
}
I solved the snap rotation using Quaternion at rotation, the issiu I had with it was to convert it from 3d to 2d, through the guide of this clip: youtube.com/watch?v=mKLp-2iseDc and made my adjustments it works just fine !
I'm building a game, same as the games where rockets follows a plane to destroy it. I have a problem at the rocket. It is 3D and when the game start the rocket is rotating 90 degrees and I don't understand why, and how could be fixed.
I tried to use constrains from rigidbody, in inspector, but those didn't worked.
this is the script that controls the rocket.
public class Move_missle_lookAt : MonoBehaviour
{
public Transform mTarget;
public float mSpeed ;
const float EPSILON = 0.1f;
// Start is called before the first frame update
void Start()
{
}
// Update is called once per frame
void Update()
{
transform.LookAt(mTarget.position);
if ((transform.position - mTarget.position).magnitude > EPSILON)
transform.Translate(0.0f, 0.0f, mSpeed * Time.deltaTime);
}
}
It's possible that your model is oriented incorrectly to start with. So, althought it appears to be rotated, it's actually in its native orientation.
After you call LookAt(), rotate the transform by 90° to compensate.
After rotating the character with jotstick. rotate resetting. direction of the character With the joystick, I want the character to look in that direction when I turn my hand in the direction I want and then pull my hand out of the joystick. Don't let him look in the same direction joysticki when I left. how can I do it. thanks.
public class MyJoystick : MonoBehaviour
{
public Joystick joystick;
public Joystick joystickRot;
public float moveSpeed;
Quaternion targetRotation;
Rigidbody rigidbody;
// Start is called before the first frame update
void Start()
{
rigidbody = GetComponent<Rigidbody>();
}
// Update is called once per frame
void Update()
{
// var rigidbody = GetComponent<Rigidbody>();
rigidbody.velocity = new Vector3(joystick.Horizontal * moveSpeed, rigidbody.velocity.y, joystick.Vertical * moveSpeed);
// this is problem
// don't reset the rotate when joysticki is released.
transform.eulerAngles = new Vector3(transform.eulerAngles.x, Mathf.Atan2(joystickRot.Horizontal
, joystickRot.Vertical) * Mathf.Rad2Deg, transform.eulerAngles.z);
}
}
'joystickRot' will return zeros when not being pushed in any other direction, that is why your rotation is being reset, so you must check first that the joystick is actually being used before applying the values to your GameObjects transform rotation.
I'm not overly familiar with the joystick system you are using, but there will most certainly be a way to test if the joystick is being used or not, and only apply the force and rotations when it is.
By the way, you have two Joystick objects referenced, but I believe you only need one.
I'm making 2D mobile game and I have a ball, but my ball doesn't have a constant moving speed. What I need to do?
When I build game on my android device, ball have a various speed. In that case, my game is not playable.
I hope that someone can help me. Thanks.
This is on my start function:
void Start () {
GetComponent<Rigidbody2D> ()
.AddForce (new Vector2 (1f, 0.5f)* Time.deltaTime * force);
}
Is it a good practice if I used in code " Application.LoadLevel ("__Scena_0"); " to load existing scene when I lose " life" ? Problem happens when I lost " life " and try playing game in second chance.
My update function is about OnTriggerEnter2D when my ball hit trigger objects.
EDIT 23.12.2015. : problem solve with adding physics material (fiction 0) and adding to script:
using UnityEngine.SceneManagement;
...
SceneManager.LoadScene ("MainScene");
The problem is the calculation of the force vector:
new Vector2 (1f, 0.5f) * Time.deltaTime * force
You are using Time.deltaTime as a factor, which means that the applied force is not constant, but depending on the deltaTime, which is the duration of the last frame. This explains why it changes randomly.
I don't think Time.deltaTime is what you want here, try just removing the factor and adjusting the "force" factor accordingly. You should now have a constant force applied, independent from the platform you play on.
Create a new Physics Material, set friction zero and add it to your object. If your object has no friction, its speed cannot be decreased. Then, use AddForce() on Rigidbody2D to speed up.
Assuming that your ball and colliding walls have bouncy materials with no friction. Try
public float _ballSpeed = 2.5f;
Rigidbody2D _rb;
void Start()
{
_rb = GetComponent<Rigidbody2D>();
_rb.velocity = Vector2.one * _ballSpeed;
}
void Update()
{
}
From this you can control ball speed through _ballSpeed
//========== OR ==========//
If you want to retain speed even after ball destruction.
Retain _ballSpeed in any global static variable.
Suppose you have a class named Globals, declare a variable like,
public class Globals
{
public static float BALL_SPEED = 2.5f;
}
Now in Ball Script
Rigidbody2D _rb;
void Start()
{
_rb = GetComponent<Rigidbody2D>();
_rb.velocity = Vector2.one * Globals.BALL_SPEED;
}
void Update()
{
}