how do I make a obeject (player) move the way it's pointing ? (like a jetpack) (c#)

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Hi , have been looking how to fix this for some time now and haven't found how to so if you know how to fix it and write that , thank you.

I am working on a game where you fly arond with a jetpack (in almost no gravity) and can rotate the character .The script I made works but not as I want it to. When I press space it the player/obeject moves up but it always go up. When I rotate the character it still moves the same way (when I press space it moves up , even if my character is upside down) and I haven't found a way how to fix that.

script I am using (c#) :

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class PlayerMovement : MonoBehaviour {
 
 
     public float JetSpeed;
     public float RotateSpeed = 30f;
 
 
     void Update() {
 
         if (Input.GetKey(KeyCode.A))
         {
             transform.Rotate(-Vector3.forward * -30 * Time.deltaTime);
         }
 
         else if (Input.GetKey(KeyCode.D))
         {
             transform.Rotate(Vector3.forward * -30 * Time.deltaTime);
         }

         **// this is the part that makes the player fly/jump**

         if (Input.GetKeyDown(KeyCode.Space))
         {
             transform.position = transform.up * JetSpeed;
 
         }
 
     }
 }

Thanks for reading and have a great day! // HAPPY_SIR

Answer 1

Answer by voncarp · Jan 23, 2017 at 08:29 AM

I readjusted your rotation and forward movement functionality as they didnt seem to move in a meaningful way. Something like this might be what you are looking for :

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class helpscript : MonoBehaviour {
 
     public float JetSpeed;
     public float RotateSpeed = 30f;
  
     void Update() {
 
         if (Input.GetKey(KeyCode.A))
         {
             transform.Rotate(-Vector3.down * -30 * Time.deltaTime);
         }
 
         else if (Input.GetKey(KeyCode.D))
         {
             transform.Rotate(Vector3.down * -30 * Time.deltaTime);
         }
          if (Input.GetKey(KeyCode.Space))
         {
             transform.position += transform.forward * JetSpeed * Time.deltaTime;
 
         }
 
     }
 }

You might have to adjust the rotations as I don't know if you are using 2D or 3D

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Pengocat · Jan 23, 2017 at 09:22 AM 0

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You may want to use Space.self/LocalPosition ins$$anonymous$$d of using the world coordinate so when the object is rotated you move upwards in the direction of the object and not upwards relative to the world.

     [Range(1f, 50f)]
     public float JetSpeed = 10f;
     [Range(1f, 100f)]
     public float RotateSpeed = 30f;
 
     void Update()
     {
         bool rotateLeft = Input.Get$$anonymous$$ey($$anonymous$$eyCode.A);
         bool rotateRight = Input.Get$$anonymous$$ey($$anonymous$$eyCode.D);
         bool flyUpwards = Input.Get$$anonymous$$ey($$anonymous$$eyCode.Space);
 
         if (rotateLeft && rotateRight)
         {
             // No rotation
         }
         else if (rotateLeft)
         {
             transform.Rotate(Vector3.back * RotateSpeed * Time.deltaTime);
         }
 
         else if (rotateRight)
         {
             transform.Rotate(Vector3.forward * RotateSpeed * Time.deltaTime);
         }
         // this is the part that makes the player fly/jump**
         if (flyUpwards)
         {
             var translateSpeed = JetSpeed * Time.deltaTime;
             transform.Translate(Vector3.up * translateSpeed, Space.Self);
         }
     }

HAPPY_SIR · Jan 23, 2017 at 05:21 PM 0

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Thanks so much for the answares , but sadly I am using 2d , and what I am trying to do is make the character fly in the derection it is pointing. But Thanks for the answare anyways! I am really thankfull for your answer!

how do I make a obeject (player) move the way it's pointing ? (like a jetpack) (c#)

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