How do I slide a cube forwards?

Question

Apparently, using transform.Translate actually teleports the object rather than moving it, so I've been trying to use AddForce to move a cube around, but it seems to be flipping itself forwards rather than sliding forwards. Any help would be much appreciated.

EDIT: Here is the code for how I am currently attempting to slide the cube:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class PlayerBoxScript : MonoBehaviour {
 
     public Rigidbody TheRigidBody;
 
     public float Speed;
 
     public float ForceSpot;
 
     public string ForwardButton;
     public string BackwardsButton;
     public string TurnRightButton;
     public string TurnLeftButton;
 
     void Start () {
         
     }
 
     void Update () {
         if (Input.GetKey(ForwardButton)){
             TheRigidBody.AddForceAtPosition (Vector3.forward * Speed, gameObject.transform.position + new Vector3(0,ForceSpot,0));
         }
         if (Input.GetKey (BackwardsButton)) {
             TheRigidBody.AddForceAtPosition (Vector3.back * Speed, gameObject.transform.position + new Vector3(0,ForceSpot,0));
         }
         if (Input.GetKey (TurnRightButton)) {
             gameObject.transform.Rotate (new Vector3 (0, 1, 0));
         }
         if (Input.GetKey (TurnLeftButton)) {
             gameObject.transform.Rotate (new Vector3 (0, -1, 0));
         }
     }
 }

Answer 1

Best Answer

Answer by UDN_9a915d40-27e1-405b-b1cc-83be8be3e71d · Dec 27, 2017 at 09:26 AM

Use the velocity variable in the Rigidbody. Ex: GetComponent<RigidBody>().velocity = transform.forward * moveSpeed

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$$anonymous$$ · Dec 27, 2017 at 07:21 PM 0

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This works, but only if I freeze all rotation.

Answer 2

Answer by uk007singh · Dec 27, 2017 at 05:02 AM

 using UnityEngine;
 using System.Collections;
 
 public class MoveCube: MonoBehaviour
 {
     public float moveSpeed = 20f;
     public float turnSpeed = 40f;
     
     
     void Update ()
     {
         if(Input.GetKey(KeyCode.UpArrow))
             transform.Translate(Vector3.forward * moveSpeed * Time.deltaTime);
         
         if(Input.GetKey(KeyCode.DownArrow))
             transform.Translate(-Vector3.forward * moveSpeed * Time.deltaTime);
         
         if(Input.GetKey(KeyCode.LeftArrow))
             transform.Rotate(Vector3.up, -turnSpeed * Time.deltaTime);
         
         if(Input.GetKey(KeyCode.RightArrow))
             transform.Rotate(Vector3.up, turnSpeed * Time.deltaTime);
     }
 }

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$$anonymous$$ · Dec 27, 2017 at 05:09 AM 0

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I don't want to use Translate because it makes collisions look choppy.

Answer 3

Answer by SovietAlex · Dec 27, 2017 at 01:20 PM

Okay there are many ways to do this.

1~ Add Rigidbody to your cube, In Rigidbody go to "Constraints", and at Freeze Rotation select "x" and "z".

This way you can use AddForce method.

2~ Use transform.position = transform.position + transform.forward * distance;

distance is an integer or a float;

Or

Use transform.position = transform.position + transform.forward * distance * Time.deltaTime;

this makes the movement smoother

3~ Use transform.position = new Vector3(transform.position.x + xAmount, transform.position.y, transform.position.z + zAmount);

this allows you to

go x units to the left or right

or

go z units forward or backward

Or

Use transform.position = new Vector3(transform.position.x + 10 * Time.deltaTime, transform.position.y, transform.position.z + 10 * Time.deltaTime);

Same thing just makes it smoother.

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$$anonymous$$ · Dec 27, 2017 at 07:18 PM 0

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Directly changing the position of the object is teleporting it, which is what I am trying to avoid.

Answer 4

Answer by Lumineux · Dec 27, 2017 at 09:00 AM

You can freeze the rotation:

alt text

untitled.png (10.2 kB)

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$$anonymous$$ · Dec 27, 2017 at 07:18 PM 0

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If I freeze the rotation, it does not move at all.

How do I slide a cube forwards?

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