Characters y position continously increases/decreases whenever I press anything

[Kiau]

It seems as though the problem has to do with the
Vector2 playerVelocity = new Vector2 (moveInput.x,player , RigidBody.velocity.y);

The position y on the transform component of the Player increases/decreases exponentially and i am not sure what is causing this

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.InputSystem;
public class PlayerMovement : MonoBehaviour

{

Vector2 moveInput;
Rigidbody2D playerRigidBody;
[SerializeField] float movementMod;

void Start()
{
    playerRigidBody = GetComponent<Rigidbody2D>();
}
void Update()
{

    Run();

}
void OnMove(InputValue value)
{
    moveInput = value.Get<Vector2>();
    Debug.Log(moveInput);
}

void Run()
{
     Vector2 playerVelocity = new Vector2 (moveInput.x , playerRigidBody.velocity.y);
    playerRigidBody.velocity = playerVelocity*movementMod;
}

}

[Nina]

Hi Kiau,

When exactly does that happen? Always? Even if you do not press any keys?

[Kiau]

Hi Nina,

so when i start, the guy falls down as normal, ican move left and right as normal, it seems as though it happens when i get to the edge of a tile. so i shoot downwards through the bottom of the screen (hitting y = -10000 in seconds) if i leave the tile with no tile below, and shoot upwards if i hit a tile directly infront of me.

thanks for your quick reply

[Kiau]

dont know if this helps…

It seems to smash through any colider aswell…

[Nina]

Thank you for the additional information.

It’s just a guess but maybe the problem is playerRigidBody.velocity = playerVelocity*movementMod; in combination with new Vector2 (moveInput.x , playerRigidBody.velocity.y);.

Let’s say movementMod is 2f, and playerRigidBody.velocity.y is 1f in frame 0, you have playerRigidBody.velocity.y = 1f * 2f at the end of frame 0.

In frame 1, you have playerRigidBody.velocity.y == 2f. At the end of that frame, you have 2f * 2f = 4f.

And in frame 2, you have 4f; at the end of that frame 4f * 2f = 8f.

Then 16f, 32f, 64f. And so on. After a few frames, you get a “crazy” y-value.

Log playerRigidBody.velocity.y into your console to see if my assumption is correct.

---

What exactly is the idea behind movementMod?

[Kiau]

Hi Nina again,

Thank you for your help.
THe idea behind the movementMOd was to affect the runSpeed (as Rick called it) and you are obviously right. I seem to have put it in the wrong place multiplying the playerVelocity instead of just the playerRigidBody.velocity.x.

Fixed and now it works

Thank you!!