koobas.hobune.stream
Unity 2D: Game freezes after the first frame of a particular animation
Hello, I am fairly new to Unity and coding so excuse me if I sound out of touch. I am making this 2D platformer/sidescroller and I have this sprite for dust trails for when he runs/jumps and since I don't know how to implement them via the particle system I figured I would create a new game object, attach the dust animations to it, attach it to my character as a child and trigger it via script whenever I run/jump. However, when I set up all the animations and trigger them the game freezes on the very first frame of said animation and I get the following error in the console.
NullReferenceException: Object reference not set to an instance of an object dust.Update () (at Assets/dust.cs:18)
I created an entirely new project with minimal code just to see if it was one of the other scripts affecting it but sadly no. Here's the new test code that I used for the character (just a jump script basically)
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class jump : MonoBehaviour {
public Rigidbody2D rb;
void Start () {
rb = GetComponent<Rigidbody2D>();
}
void Update () {
if (Input.GetKeyDown(KeyCode.Space))
rb.AddForce(new Vector2(0, 300));
}
void FixedUpdate()
{
rb.velocity = new Vector2(0, rb.velocity.y);
}
}
And here's the script for the game object I attached the dust animations to -
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class dust : MonoBehaviour {
Animator anim;
jump skok;
// Use this for initialization
void Start () {
anim = GetComponent<Animator>();
skok = GetComponent<jump>();
}
// Update is called once per frame
void Update () {
if (skok.rb.velocity.y > 0)
anim.SetTrigger("go");
}
}
The weird part is the game only freezes if the animation is in any way triggered. I can let the animation loop as I'm playing and there's no problem whatsoever, but once I trigger it via code the I get this error and the game just freezes.
Honestly I'm sorry if it's a dumb question, as I said I'm only a week or so into Unity and C#, thanks in advance.
The error is telling me that either skok is null or skok.rb is null.
Are both jump and dust attached to the same gameobject? Or is dust attached to a child object of the object with the jump script?
If that is the case, try the following change...
Change
skok = GetComponent<jump>();
to
skok = transform.parent.gameObject.GetComponent<jump>();
Hope this helps, -Larry
