Hi my problem is in Unity, I am a beginner in c#, my gameObject is not triggering the collider that is set on the plane of the game, in order for it to reset it's position.
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class BasketballSpawnScript : MonoBehaviour
{
public Transform respawnPoint;
void OnTriggerEnter(Collider other)
{
if (other.gameObject.CompareTag("Basketball"))
{
other.gameObject.transform.position = respawnPoint.position;
}
}
}
This script is attached to the plane and the gameobject is tagged with Basketball, when it enters the collider of the floor it should transform it's position to the original position.
I cannot see what is wrong, can I receive some help?
P.S I get this error when other gameobject go through the collider too.
NullReferenceException: Object reference not set to an instance of an object
If using a Transform for spawn point, remember to set the value of it in the inspector menu.
public Transform respawnPoint;
void OnTriggerEnter(Collider other)
{
if (other.CompareTag("Basketball"))
other.transform.position = respawnPoint.position;
}
else
public Vector3 respawnPoint = Vector3.zero;
void OnTriggerEnter(Collider other)
{
if (other.CompareTag("Basketball"))
other.transform.position = respawnPoint;
}
private void OnTriggerEnter(Collider other){
if(other.gameobject.tag=="Basketball"){
other.gameobject.transform.position = respawnPoint;
}
}
I hope it helps you.
Related
I have a problem with writing a function that throws spawned ball by pressing a button.
So far, i could only instantiate the ball and it is affected by gravity.
I can not wrap my head arround, how in my code should i add a force to push it with some force. Right now it just plops in front of a player.
I tried to fiddle with .AddForce() on a ball rigidbody2D and still nothing.
I would greatly appreciate if someone could take a look at the code and guide me into some directcion on where to AddForce for ball to make it move?
using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.InputSystem;
public class PlayerControl : MonoBehaviour
{
[Header("Player Atributes")]
[SerializeField] float runSpeed = 10f;
Vector2 moveInput;
Rigidbody2D playerRigidbody2D;
[Header("Ball Settings")]
public bool playerHasABall = false;
[SerializeField] GameObject ball;
[SerializeField] Transform ballSpawn;
void Start()
{
playerRigidbody2D = GetComponent<Rigidbody2D>();
}
void Update()
{
Run();
FlipSprite();
}
void OnMove(InputValue value)
{
moveInput = value.Get<Vector2>();
}
void OnFire(InputValue value)
{
if(!playerHasABall) {return;}
Instantiate(ball, ballSpawn.position, transform.rotation);
playerHasABall = false;
}
void Run()
{
Vector2 playerVelocity = new Vector2 (moveInput.x * runSpeed, playerRigidbody2D.velocity.y);
playerRigidbody2D.velocity = playerVelocity;
}
void FlipSprite()
{
bool playerHasHorizontalSpeed = Mathf.Abs(playerRigidbody2D.velocity.x) > Mathf.Epsilon;
if (playerHasHorizontalSpeed)
{
transform.localScale = new Vector2 (Mathf.Sign(playerRigidbody2D.velocity.x), 1f);
}
}
//Ball picking up script. It destroys the ball with a tag "Ball" and sets a bool playerHasABall to true
private void OnTriggerEnter2D(Collider2D other)
{
if(other.tag == "Ball")
{
Destroy(other.gameObject);
playerHasABall = true;
}
}
}
So, i manage to fiddle with the .AddForce() method once again and i came up with a solution to my problem.
My OnFire script looks like this:
void OnFire(InputValue value)
{
if(!playerHasABall) {return;}
Instantiate(ball, ballSpawn.position, transform.rotation);
playerHasABall = false;
}
No change here. I made another script called "BallBehaviour.cs" and added it to the ball with a code like this:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class BallBehaviour : MonoBehaviour
{
[SerializeField] float ballForce = 20f;
PlayerControl player;
void Start()
{
player = FindObjectOfType<PlayerControl>();
Throw();
}
public void Throw()
{
GetComponent<Rigidbody2D>().AddForce(player.transform.localScale * ballForce, ForceMode2D.Impulse);
}
}
Basically, the method Throw() tells the ball to check the direction the player is facing and then multiply it by ballForce. Then, it uses the ForceMode2d.Impulse method to apply calculated force to the ball for a second and it works on left or right direction.
Thanks Jkimishere for a nudge in a propper direction!
You might need a variable to check if the player is facing right/left.
If the player is, just add force to the ball depending on the direction.
if(!playerHasABall) {return;}
Instantiate(ball,
ballSpawn.position,
transform.rotation);
//Check which way the player is facing and add forrce to that direction.
//Adding a FacingRight boolean might help.....
playerHasABall = false;
I have designed a scenario as below:
I created an object spawner to collide with things tagged as "ob", using a boolean to manage the timing to spawn new obstacles. Nonetheless, after some testing, I found that it seemed like nothing had ever collided with one another(Judged by the strings I put in the if condition had never shown in the console.) Can't figure out why! Please HELP!!!
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class newObSpawning : MonoBehaviour
{
public GameObject[] oblist;
private bool hasOb=true;
public float adjustSpawnx;
void Update()
{
if (!hasOb)
{
spawnObs();
hasOb = true;
}
}
private void OnTriggerEnter2D(Collider2D collision)
{
if (collision.gameObject.CompareTag("ob"))
{
hasOb = true;
Debug.Log("hasOb"); //just for testing
}
}
private void OnTriggerExit2D(Collider2D collision)
{
if (collision.gameObject.CompareTag("ob"))
{
hasOb = false;
Debug.Log("hasOb");
}
}
public void spawnObs()
{
int i = Random.Range(0, oblist.Length);
Debug.Log(i);
float y = 7.87f;
GameObject newob = Instantiate(oblist[i], new Vector3(transform.position.x+ adjustSpawnx,y,0), Quaternion.identity);
}
}
obspawner carry a "follow player" script to move at the same pace as the player,and it went just well
Your player doesn't seem to have a Rigidbody2D component. Add Rigidbody2D to your player. A collider can only emit OnTriggerEnter2D or OnTriggerExit2D events if there is a rigidbody on the object too
You have to tag the object "ob" that you want to register the collision with, most probably, I think what you are searching for is the collision of your player with object spawner so tag the player with "ob".
So i have this little particlesystem attached on my player so if he dies he explodes. But i cant simply attach the particlesystem under the player because if i destroy my player the childs of the gameobjects get destroyed as well. The animation runs if he dies but not on his current spot so some ideas for that? Maybe to transform the position to the current position of the player while he dies?
Here my code:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class playerdeath : MonoBehaviour
{
public ParticleSystem death_explosion;
// Start is called before the first frame update
void Start()
{
death_explosion.Stop();
}
// Update is called once per frame
void Update()
{
}
void OnTriggerEnter(Collider other)
{
if (other.gameObject.tag == "deathcube")
Destroy(gameObject);
Debug.Log("collision detected");
death_explosion.Play();
}
}
What you could do is create a prefab of the particle object and reference it inside your script like so:
public ParticleSystem death_explosion_Prefab;
And instead of attaching it to the Player as a child, instantiate it on collision:
void OnTriggerEnter(Collider other)
{
if (other.gameObject.tag == "deathcube")
{
Debug.Log("collision detected");
Instantiate(death_explosion_Prefab, gameObject.transform.position, Quaternion.identity);
Destroy(gameObject);
}
}
got it :) --> add death_explosion.transform.position = GameObject.Find("player").transform.position;
I writing simple game on Unity (C#)
I have player and want to make the destroyer, that will destroy player.
I create prefab of destroyer. And next, I create Quad.
I have spawn script:
using UnityEngine;
using System.Collections;
public class SpawnScript : MonoBehaviour {
public GameObject[] obj;
public float spawnMin = 1f;
public float spawnMax = 2f;
// Use this for initialization
void Start () {
Spawn();
}
void Spawn()
{
Instantiate(obj[Random.Range(0, obj.GetLength(0))], transform.position, Quaternion.identity);
Invoke("Spawn", Random.Range(spawnMin, spawnMax));
}
}
Also I write DestroyerScript:
using UnityEngine;
using System.Collections;
public class DestroyerScript : MonoBehaviour {
void OnTriggerEnter2D(Collider2D other)
{
if (other.tag == "Player")
{
Application.LoadLevel(1);
return;
}
if (other.gameObject.transform.parent)
{
Destroy(other.gameObject.transform.parent.gameObject);
}
else
{
Destroy(other.gameObject);
}
}
}
My destroyer spawning, but when player get it, I don't have Game Over screen.
Add rigid body to both player and "player destroyer" and then set onTriggerEnter on your player destroyer like so:
void OnTriggerEnter(Collider other) {
Destroy(other.gameObject);
}
For some fine tuning, you can do some checks if the other object is in fact the Destroyer (you can compare the tag or something, I won't go into too much detail now).
EDIT: Uncheck "isTrigger" on your BoxColliders and try this:
void OnCollisionEnter (Collision col)
{
Destroy(col.gameObject);
}
I have a camera shake C# script that I want to run once the player triggers a box collider?
The camera shake code:
using UnityEngine;
using System.Collections;
public class CameraShake : MonoBehaviour
{
public Transform camTransform;
public float shake = 0f;
public float shakeAmount = 0.7f;
Vector3 originalPos;
void Awake()
{
if (camTransform == null)
{
camTransform = GetComponent(typeof(Transform)) as Transform;
}
}
void OnEnable()
{
originalPos = camTransform.localPosition;
}
void Update()
}
That's because you did not add the OnTriggerEnter, OnTriggerStay or OnTriggerExit ( depending of what you want to achieve ) function to the script.
For e.g:
void OnTriggerEnter(Collider other){
if(other.tag == "Player"){
// shake the camera here..
}
}
Don't forget to check the trigger box in the box collider.