I am using unity 2018.3.5f1 so a few solutions to this problem don't work.
Starting from the Roll-A-Ball demo project, I want to extend the camera script to follow the player, but also keeping track of the direction of movement. Ex: If the ball starts moving to the side, I need the camera to rotate around the player's axis to position behind him, and then start following him.
I have tried making the camera a child to the ball i'm trying to control and i've tried making a script but it won't follow the ball correctly it keeps rotating the camera as well as the ball (i'm using this bit of code and trying to modify it as it's the only one that works)
here is the code I have at the moment:
using UnityEngine;
using System.Collections;
public class CompleteCameraController : MonoBehaviour
{
public GameObject player; //Public variable to store a reference to the player game object
private Vector3 offset; //Private variable to store the offset distance between the player and camera
// Use this for initialization
void Start()
{
//Calculate and store the offset value by getting the distance between the player's position and camera's position.
offset = transform.position - player.transform.position;
}
// LateUpdate is called after Update each frame
void LateUpdate()
{
// Set the position of the camera's transform to be the same as the player's, but offset by the calculated offset distance.
transform.position = player.transform.position + offset;
}
}
I understand why it is rotating but no reasearch is helping me find out how to lock the camera so it is looking behind the ball at all times
Have you tried adding some restraints to your camera? If it is only supposed to turn to follow the ball, you can freeze the position of 2 axes (x and z), and only let the camera rotate around the y axis of the ball.
You can play around with the restraints on the Inspector, or use GetComponent<Rigidbody>().constraints = RigidbodyConstraints.FreezeRotationX; in the camera script.
(EDIT) Sorry, this is how you would do it if the gameObject has a rigidbody, but the idea is the same if it doesn't have one.
When you're setting the position or rotation of the camera, think about which components of the position/rotation you actually want to change (x,y,z).
Use offset = new Vector3 (offset.x, offset.y, offset.z)and replace anything that shouldn't change with a constant.
Also, when you made the Camera the child of the ball, you could have set it so that every frame, the Camera updates in such a way that it won't roll with the ball. You could do this by putting code in the update method of the camera that sets the component x, y, or z equal to some constant. Whatever axis the ground plane is on is probably the correct choice.
If you want the same camera angle that the camera should follow while following the ball (similar to Temple Run), then try the below code:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System;
public class CompleteCameraController : MonoBehaviour
{
public Transform Player;
public float distanceFromObject = 3f;
void Update()
{
Vector3 lookOnObject = Player.position - transform.position;
lookOnObject = Player.position - transform.position;
transform.forward = lookOnObject.normalized;
Vector3 playerLastPosition;
playerLastPosition = Player.position - lookOnObject.normalized * distanceFromObject;
playerLastPosition.y = Player.position.y + distanceFromObject / 2;
transform.position = playerLastPosition;
}
When the ball moves left or right, the camera will follow the same angle as the ball moves towards.
Related
Good day, I'm making a 2D platformer game and I'm trying to make to cam follow the player. But ignore the y-axis so when the player jumps the cam stays in positions instead of following the player.
Example (see asset pack demo): https://ansimuz.itch.io/gothicvania-church-pack
How can I do this using Cinemachine?
You don't have to override the camera's Y value in your camera controller script. This would be a very basic implementation:
using UnityEngine;
using System.Collections;
public class CameraController : MonoBehaviour {
public GameObject player; //Public variable to store a reference to the player game object
public bool followY = false;
private Vector3 offset; //Private variable to store the offset distance between the player and camera
// Use this for initialization
void Start ()
{
//Calculate and store the offset value by getting the distance between the player's position and camera's position.
offset = transform.position - player.transform.position;
}
// LateUpdate is called after Update each frame
void LateUpdate ()
{
// Set the position of the camera's transform to be the same as the player's, but offset by the calculated offset distance.
if(followY)
{
transform.position = player.transform.position + offset; // we should follow the player Y movements, so we copy the entire position vector
}
else
{
transform.position = new Vector3(player.transform.position.x, transform.position.y, player.transform.position.z) + offset; // we just copy the X and Z values
}
}
}
Attach this script to the camera and you can enable or disable the Y-axis movement by setting the boolean accordingly. In case you will never need this functionality, just keep the line in the else block.
I hope this will help you!
I am building a 3D maze that is moved by the player. I'm taking a "labyrinth" approach and having a small ball be maneuvered through the maze when the player moves the maze. The problem occurs when the player moves a wall that the ball is currently resting on in the direction of the ball. The ball passes through the wall and stops on the next available wall.
The maze uses a mesh collider and rigidbody and the ball is a sphere collider.
I have drastically increased the physics frame rate to no avail. Considering the complexity of the maze and the potentially large number of maze combinations I really don't want to attach simple colliders to every wall. Any tips, tricks, suggestions, comments, etc. would be appreciated.
Ball Script for continious rotation:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class ballGravity : MonoBehaviour {
public Rigidbody m_Rigidbody;
public Vector3 m_EulerAngleVelocity;
// Use this for initialization
void Start () {
m_EulerAngleVelocity = new Vector3 (0, 100, 0);
m_Rigidbody = GetComponent<Rigidbody>();
}
// Update is called once per frame
void FixedUpdate () {
Quaternion deltaRotation = Quaternion.Euler (m_EulerAngleVelocity * Time.deltaTime);
m_Rigidbody.MoveRotation (m_Rigidbody.rotation * deltaRotation);
}
}
Maze Rotation Script:
using UnityEngine;
using System.Collections;
public class rotObj : MonoBehaviour
{
private float baseAngle = 0.0f;
float rotSpeed = 10;
void OnMouseDown(){
Vector3 pos = Camera.main.WorldToScreenPoint(transform.position);
pos = Input.mousePosition - pos;
baseAngle = Mathf.Atan2(pos.y, pos.x) * Mathf.Rad2Deg;
baseAngle -= Mathf.Atan2(transform.right.y, transform.right.x) *Mathf.Rad2Deg;
}
void OnMouseDrag(){
//float rotY = Input.GetAxis("Vertical")*rotSpeed*Mathf.Deg2Rad;
//gm.transform.Rotate(Vector3.right, rotY);
Vector3 pos = Camera.main.WorldToScreenPoint(transform.position);
pos = Input.mousePosition - pos;
float ang = Mathf.Atan2(pos.y, pos.x) *Mathf.Rad2Deg - baseAngle;
transform.rotation = Quaternion.AngleAxis(ang, Vector3.forward);
}
}
To get consistent physics state its best to move colliders within FixedUpdate - if you move colliders in a OnMouseXX stage of the pipeline (Consider consulting https://docs.unity3d.com/Manual/ExecutionOrder.html), you risk that the change might be missed next time FixedUpdate is called. I.e. your ball moves through the state of your scene based on how it was before you rotated the maze, and with some unfortunate timings its possible that collisions get missed.
If you already tried with a tighter timestep, consider queueuing the OnMouseDrag change, like store the resulting rotation in a variable, and apply it in FixedUpdate, so it is applied just in case for next physics computation.
you may also consider moving your ball at the same time as you rotate your maze, quickly moving a mesh collider against a much smaller rigidbody is a sure source of trouble. Can you move a camera instead ?
(For Unity 5.3.5f1)
Right now I am working on a 3D camera that is orbiting horizontally around the player. The player is a RigidBody rolling sphere. The player can freely rotate the axis horizontally but when there is no input I want the rotation to reset back to the direction of the velocity.
Right now all I need to know is how to situate the camera behind the player's direction of velocity by rotating the camera around the player from its previous rotation.
Here is a crude drawing of what I am looking for:
Currently to update the camera to orbit around the player I use this script on the camera (with comments):
using UnityEngine;
using System.Collections;
public class example : MonoBehaviour {
public GameObject Player;
//I assume you would use this PlayerRB to find data regarding the movement or velocity of the player.
//public Rigidbody PlayerRB;
private float moveHorizontalCamera;
private Vector3 offset;
// Use this for initialization
void Start ()
{ //the offset of the camera to the player
offset = new Vector3(Player.transform.position.x - transform.position.x, transform.position.y - Player.transform.position.y, transform.position.z - Player.transform.position.z);
}
// Update is called once per frame
void Update ()
{
moveHorizontalCamera = Input.GetAxis("Joy X"); //"Joy X" is my right joystick moving left, none, or right resulting in -1, 0, or 1 respectively
//Copied this part from the web, so I half understand what it does.
offset = Quaternion.AngleAxis(moveHorizontalCamera, Vector3.up) * offset;
transform.position = Player.transform.position + offset;
transform.LookAt(Player.transform.position);
}
}
Any help at all would be great!
I would suggest you use Vector3.RotateTowards (https://docs.unity3d.com/ScriptReference/Vector3.RotateTowards.html)
You take the Vector that is currently pointing from the Player to the camera (transform.position - Player.transform.position) and rotate it towards -Player.GetComponent<Rigidbody>().velocity.normalized * desiredDistance (the vector pointing in the opposite direction of the players velocity with magnitude corresponding the desired distance of the camera to the player). You can then use Vector3.RotateTowards to rotate the camera (smoothly or immediately) around the Player by setting the cameras position accordingly.
Something like:
transform.position = Player.transform.position + Vector3.RotateTowards(transform.position - Player.transform.position, -Player.GetComponent<Rigidbody>().velocity.normalized * desiredDistance, step, .0f);
where step if the angle update in radians. (Note: you should avoid calling GetComponent<Rigidbody>() every Update. You are better off storing it somewhere)
I hope I understood your question correctly and this helps.
I have been working on getting a camera to follow my player when he moves with 3rd person controller.
At the moment the camera does follow him but the view remains looking forward, so if I was to move left and right the camera sits still instead of rotating to face the same direction as my character.
The code I currently have is:
using UnityEngine;
using System.Collections;
public class CameraController : MonoBehaviour
{
public GameObject player;
private Vector3 offset;
void Start ()
{
offset = transform.position - player.transform.position;
}
void LateUpdate ()
{
transform.position = player.transform.position + offset;
}
}
Anyone know a solution to make my camera rotate with the charater?
You have three option for getting this done.
Make the camera as a child of your 3rd person in game object hierarchy.
Using scripts align its forward vector to the person's forward vector.
transform.forward = player.transform.forward;
Using scripts make the camera to LookAt the 3rd person.
transform.LookAt(player);
I'm working on the kinect V2, and i would like to make a script witch attaches the position of a game object ( moving with a head tracker) and the camera of my scene, to make an illusion of hologram.
I access it with the camera as a child of the game object, a lookat for a camera orbital ( rotation ), and a projection matrix for the camera to flip some axis of the camera.
But the projection matrix make some bugs with the textures and lighting of my scene. That´s why I would like to create a c# script who say:
Position camera = position gameobject (x,y,-z)
If position gameobject x>0 Else rotation camera y increase.
If position gameobject x<0 Else rotation camera y decrease.
If position gameobject y>0 Else rotation camera y decrease.
If position gameobject y<0 Else rotation camera y increase.
Nothing to do for the rotation camera z axis.
Can you help me to traduce this in C# ?
This is not my script :) but only the main idea i would like to do. I hope receive your help for a beginner developer!
Thank´s a lot
It is kind of hard to tell what you want. Here is some psuedo code that should help you on your way. I do not have unity to test it and it is not complete. But it will give you the basics to learn what you are trying to do.
using UnityEngine;
using System.Collections;
public class TestScript: MonoBehaviour {
public GameObject camera;
public GameObject gameObject;
public int rotationAmount = 1;
// Update is called once per frame
void Update () {
Vector3 camera = new Vector3(gameObject.transform.position.x, gameObject.transform.position.y, -gameObject.transform.position.x);
if(gameObject.transform.position > 0) {
camera.x -= rotationAmount;
}
camera.transform.position = camera;
}
}
You will have to name the C# script TestScript drag it on a GameObject and drag your camera and gameObject into its slots. If you do not know how to do this I suggest you read into Unity more.