CODEWITHSUNDEEP
c#visual-studiounity-game-engine
Allan Chiang
Allan Chiang

Reputation: 19

Player not moving in Unity

Here is my code:

using UnityEngine;

public class PlayerMovement : MonoBehaviour {

    // This is a reference to the Rigidbody component called "rb"
    public Rigidbody rb;

    public float forwardForce = 4000f;
    public float sidewaysForce = 100f;

    // We marked this as "Fixed"Update because we
    // are using it to mess with physics.   
    void FixedUpdate()
    {
        // Add a forward force
        rb.AddForce(0, 0, forwardForce * Time.deltaTime); 

        if( Input.GetKey("d") )
        {
            rb.AddForce(sidewaysForce * Time.deltaTime, 0, 0, ForceMode.VelocityChange);
        }

        if( Input.GetKey("a") )
        {
            rb.AddForce(-sidewaysForce * Time.deltaTime, 0, 0, ForceMode.VelocityChange);
        }
    }
}

Unity - Player not moving

Please help.

Upvotes: 1

Views: 1841

Answers (2)

Spencer Stream
Spencer Stream

Reputation: 616

You will want to move your logic to get inputs into the Update() method. From there, you can set a value for the force then add this force to the RigidBody in FixedUpdate(). This way, we will be sure the logic for getting input is detected every frame.

private float movement = 0f;

void Update()
{
    if( Input.GetKey("d") )
    {
        movement = sidewaysForce;
    }
    else if ( Input.GetKey("a") )
    {
        movement = -sidewaysForce;
    }
    else
    {
        movement = 0f;
    }
}

void FixedUpdate()
{
    rb.AddForce(0, 0, forwardForce * Time.fixedDeltaTime); 

    rb.AddForce(movement * Time.fixedDeltaTime, 0, 0, ForceMode.VelocityChange);
}

I've also updated Time.deltaTime to Time.fixedDeltaTime since you are calling it in FixedUpdate().

Finally, you may want to test with different force modes when adding the sideways force.

Upvotes: 1

SyFySkyE
SyFySkyE

Reputation: 31

Let's try a few things. First, trying taking out Time.deltaTime in FixedUpdate. When it comes adding forces in FixedUpdate, you normally don't need to useTime.deltaTime.

Secondly, try creating a physics material with zero friction and attaching that to the player object's box collider.

Upvotes: 1

Related Questions