I tried to make this object move down but everytime it goes out of the screen it teleports back up with a different x position but it appears in random places on screen and collides with things. it only has this script and a rb2d and a boxcollider2d. rb2d doesnt have gravity,collision detection continious,interpolate interpolate,sleeping mode never sleep.im new to unity
this is the code
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class Teleport : MonoBehaviour
{
public Rigidbody2D rb;
// Start is called before the first frame update
void Start()
{
}
// Update is called once per frame
void Update(){
}
void FixedUpdate(){
rb.velocity=new Vector2(0f,-5f);
if (rb.position.y<-5.5f){
float rndf= Random.Range(-10.14f,10.14f);
rb.MovePosition(new Vector2(rndf,5.5f));
}
}
}
here is a photo of the editor
It was because i moved it and didn't teleport it. It collided with objects on the way
Related
I added a particle system to my unity project. But I can't make it attach to a certain game object or tag. How can I make a Particle System sit on the center of a cube, while it's getting played once if the player triggers with this cube?
Code used for the trigger to work:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class Collision_Player_grower : MonoBehaviour
{
public GameObject Player_grower;
public ParticleSystem CollisionGrower;
// Start is called before the first frame update
void Start()
{
times_player_grower = 0;
CollisionGrower.transform.position = Player_grower.transform.position;
}
// Update is called once per frame
void OnTriggerEnter(Collider collision)
{
if (collision.gameObject.tag == "Player")
{
print("we hit an playergrower");
CollisionGrower.Play();
Destroy(Player_grower);
}
}
}
Note: It does work if I manually place the particle system in the heart of the cube, but I assume this can be done in an easier way.
From what I understand, you want the position of the particle system to be in the center of another object.
1)
You could do that simply by attaching a particle system game object as a child of the cube you were talking about.
2)
You could do this with code instead. In case you want the particle system to do something extra, you could just adjust the code.
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class Collision_Player_grower : MonoBehaviour
{
public GameObject ParticleSystemObject;
public GameObject Cube;
public GameObject Player_grower;
public ParticleSystem CollisionGrower;
// Start is called before the first frame update
void Start()
{
times_player_grower = 0;
CollisionGrower.transform.position = Player_grower.transform.position;
}
// Update is called once per frame
void Update()
{
ParticleSystemObject.transform.position = Cube.transform.position;
}
void OnTriggerEnter(Collider collision)
{
if (collision.gameObject.tag == "Player")
{
print("we hit an playergrower");
CollisionGrower.Play();
Destroy(Player_grower);
}
}
}
I don’t fully understand what the rest of the variables are for, and what they are, so I may have done some un-needed things.
First, I added two GameObject variables. One of them is the cube object you want the particle system to go to, and the other is the particle system as a game object. I set the position of the particle system to the position of the cube.
Important: if you have this script attached to the cube, remove the Cube variable.
Instead of using
... = Cube.transform.position;
Use
... = transform.position;
I'm making a game in unity where the user drags to shoot a ball at some objects at a distance. So far I have this DragAndShoot script:
//using System.Collections;
//using System.Collections.Generic;
using UnityEngine;
[RequireComponent(typeof(Rigidbody))]
[RequireComponent(typeof(Collider))]
public class DragAndShoot : MonoBehaviour
{
public Transform prefab;
private Vector3 mousePressDownPos;
private Vector3 mouseReleasePos;
private Rigidbody rb;
private bool isShoot;
void Start()
{
rb = GetComponent<Rigidbody>();
}
private void OnMouseDown()
{
mousePressDownPos = Input.mousePosition;
}
private void OnMouseUp()
{
mouseReleasePos = Input.mousePosition;
Shoot(mouseReleasePos-mousePressDownPos);
}
private float forceMultiplier = 3;
void Shoot(Vector3 Force)
{
if(isShoot)
return;
rb.AddForce(new Vector3(Force.y,Force.x,Force.z) * forceMultiplier);
isShoot = true;
createBall();
}
void createBall(){
Instantiate(prefab, GameObject.Find("SpawnPoint").transform.position, Quaternion.identity);
}
}
As you can see, I made the function createBall() in order to respawn a ball prefab at the position of the game object SpawnPoint. When I run the game, the first ball shoots fine. And another ball respawns.
Issue: when I shoot the second ball and it moves, one more ball seems to have appeared at the second ball somehow, and it moves as well. Not sure why this is happening and how to fix it - can someone pls help? Thanks.
The problem is that you need to Destroy() the game object you threw first. Since you are just bringing the objects back when click down again, here is what you should do:
Make it so that it destroys the old object. Because you just keep instantiating the object, then when you throw it again it throws the old one too. If you understand what I mean, then hopefully, you can turn this into what you want. (It wasn’t exactly clear what your game was; this is what I interpreted)
When I use LookAt the camera seems to look at the targets feet. I would like the target to be closer to the bottom of the screen. (e.g. look at the head instead).
Code:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class ThirdPersonCamera : MonoBehaviour
{
private GameObject player;
private void Start()
{
player = GameObject.FindWithTag("Player");
}
private void LateUpdate()
{
Vector3 offset = new Vector3(0,2.0f,-4.0f);
transform.position = player.transform.position + offset;
transform.LookAt(player.transform.position);
}
}
How can I make it so the camera stop centering at the feet?
I created an empty game object as a child of the player, and then adjusted the position of that. Then in my script I set it to look at that empty object instead of the player. This gives me full control of what position the camera looks at on the player.
I'm moving a player around the inside of a hollow sphere equipped with a non-convex mesh-collider. The player is meant to walk along the inner surface of the sphere with a gravitational pull towards the ship hull (away from the center). For the gravity, I've attached a modified version of this script to the player:
using UnityEngine;
using System.Collections;
public class Gravity : MonoBehaviour
{
//credit some: podperson
public Transform planet;
public bool AlignToPlanet;
public float gravityConstant = -9.8f;
void Start()
{
}
void FixedUpdate()
{
Vector3 toCenter = planet.position - transform.position;
toCenter.Normalize();
GetComponent<Rigidbody>().AddForce(toCenter * gravityConstant, ForceMode.Acceleration);
if (AlignToPlanet)
{
Quaternion q = Quaternion.FromToRotation(-transform.up, -toCenter);
q = q * transform.rotation;
transform.rotation = Quaternion.Slerp(transform.rotation, q, 1);
}
}
}
Unity's default movement controllers don't seem to work with this Gravity script, so I fashioned a simple one (forward/backward movement only):
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityStandardAssets.CrossPlatformInput;
public class NewController : MonoBehaviour {
// Use this for initialization
void Start ()
{
}
// Update is called once per frame
void Update ()
{
}
private void FixedUpdate()
{
GetComponent<Rigidbody>().AddForce(transform.forward * CrossPlatformInputManager.GetAxis("Vertical"), ForceMode.Impulse);
}
}
It works in that I'm able to walk around the inside of the sphere. It's very bumpy though, presumably because the forward force causes the player to constantly run into the corners/edges of the sphere polygon, and because these incongruities are not corrected quickly enough by the "AlignToPlanet" Quaternion in the gravity script.
To sum up, I need a way to move smoothly along the inside of the sphere. I'm not sure if this needs to be solved with code or values in the Unity Editor (regard drag, etc.).
I'm totally new with Unity (and game development in general). I followed the great simple tutorial Survival Shooter and I have one question: in this tutorial, we add a Y constraint position to the rigidbody's character plus we set the drag value and the angular drag value to infinite. How can we make the character jump since those settings prevent the character from moving to the Y axis?
If someone can give me an hand on that please...
Thanks a lot!
Why exactly do you add the constraint on the Y axis? You could remove it, and then just add gravity that will make your player stick to the ground. After that just apply a force, or just a simple translation going upwards by a set speed, to make the player jump and then wait for gravity to bring him back down.
This is what I would do to jump.
P.S. you need to remove the constraints on the Y axis on the vector
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class Spawner : MonoBehaviour
{
public Vector3 force;
public Rigidbody rb;
// Use this for initialization
void Start()
{
}
// Update is called once per frame
void Update()
{
if (Input.GetKey(KeyCode.Space) && transform.position.y == 0) //Enter your y axix where ground is located or try to learn a little more about raycasting ill just use 0 for an example)
{
rb.AddForce(force);//Makes you jump up when you hold the space button down line line 19 will do so that you only can jump when you are on the ground.
} if (Input.GetKeyUp(KeyCode.Space))
{
rb.AddForce(-force); //When you realase the force gets inverted and you come back to ground
}
}
}
I would do this instead edit the code over this post.
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class Just : MonoBehaviour {
public Vector3 force;
public Rigidbody rb;
bool isGrounded;
// Update is called once per frame
void Update()
{
if (Input.GetKeyDown(KeyCode.Space) && isGrounded == true) //Rember to got to your "Ground" object and tag it as Ground else this would not work
{
rb.AddForce(force);
}
}
void OnCollisionEnter(Collision collision)
{
if (collision.gameObject.tag == "Ground")
{
isGrounded = true;
}
}
void OnCollisionExit(Collision collision)
{
isGrounded = false;
}
}
You need to assign your ground object a tag called Ground, You need to make your own tag called Ground its not that hard tho you click your object and top left of the inspector there's the tag and then u just make a new tag called Ground. And also plz rember to assign the other values on your player object.