I can't rotate an object correctly on the X axis.

[gentle stump]

I know some of you already are prepared to give me the typical response of "just google it" I'm stuck on this phase for about an hour now, I did rotate things in the past.

But I literally can't understand why when I rotate the barrel with code, it will rotate on the y and z axis as well, I want to lock those 2 axis to 0 and -90.

Here is a video of the problem I have:

https://youtu.be/3-PE9OSvxTo

Here is the code:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class ExplosiveBarrel : MonoBehaviour
{
    public float barrelSpeed = 2f;
    public float rotationSpeed = 10f;
    void Update()
    {
        // Making the Barrel move on the road
        Vector3 newPos = new Vector3(0, 0, -1f * barrelSpeed * Time.deltaTime);

        transform.position += newPos;

        // Spinning the Barrel on the X axis

        transform.Rotate(1f * rotationSpeed * Time.deltaTime, 0f, 0f);
        
    }
}

Please explain what did I do wrong, I plan to do small projects to expand my knowledge but I'm stuck here for some reason.

Thank you in advance!

I want the barrel to go down the road, I've succesfully did that, but when I try to rotate, the entire barrel just goes in random directions.

[weary wind]

My hunch is that the physics engine is interfering with the rotation. You could try expanding the Constraints section on the rigidbody and freezing all axes of rotation. That way only your code can rotate it

[pearl juniper]

Does the object have a rigidbody?

[weary wind]

The video shows one ye

[gentle stump]

Yes.

[gentle stump]

Wait, I can freeze other axis? I didn't know that

Let me see if I can fix it!

[pearl juniper]

@gentle stump do not use a rigidbody and directly modify the transform

one or the other

[gentle stump]

So in order to have physics on my red barrels, I should use a different movement?

[gentle stump]

I've removed the RigidBody Component, but still, it has the same effect of drifting.

I can't understand at all what's wrong...It doesn't even make sense for me, I'm moving the object in the X axis but now it's moving on the y?

This is extremely weird and confusing.

Kind of made an fix @pearl juniper .

I just rotate the object using animations, at least temporary until I figure out what's happening with the code.

[pearl juniper]

Remove animation component also and just have the barrel move with code

Wait don't you want your barrel to be affected by physics?

[gentle stump]

I want it to be affected by physics, but I can't understand how to accomplish that...

I can do far complicated stuff than this but I can't do this.

[pearl juniper]

So keep the rigidbody, and use a physics based method to rotate the barrel

[gentle stump]

Any ideas where I could start learning how to move things using physics? I only know and understand to move using transform.translate.

But I want to make a realist car physics and I think I won't be able to do that using transform.translate.

Once again, sorry that I keep asking stuff, I'm just extremely curious and at the beginning 🙂

[pearl juniper]

Don't be sorry this is literally the exact place to ask questions

Most used physics methods are addforce and addtorque you can check those out

[gentle stump]

From what I remember 2-3 years ago, the best physics movement was something with addforce, but was using something called "Vector" I can't remember the full phrase though.

But I will start researching how to move things using physics.
Because, when I move my car, it instantly reaches full speed, once I stop pressing the specific key, the speed is going straigth to 0 in a milisecond.

[gentle stump]

Thank you once again !