Question How do i add force to a certain direction based on my players direction

i am trying to make a shotgun jump where i press left mouse button and it shoots me backwards but i dont know how to. it would be really apreciated if you could help i just want the code inside the if statement
this is my my code

Code (csharp):

1.  
2. using System.Collections;
3. using System.Collections.Generic;
4. using UnityEngine;
5.  
6. public class ShotgunJump : MonoBehaviour
7. {
8.     public Rigidbody rb;
9.     public Transform orientation;
10.    
11.  
12.     // Update is called once per frame
13.     void Update()
14.     {
15.         if (Input.GetMouseButtonDown(0))
16.         {
17.            
18.         }
19.     }
20. }
21. [CODE/]

 

if your character has blue axis pointing forward, then can add force with something like

Code (CSharp):

1. rb.AddForce(-transform.forward*amount,ForceMode.Impulse);

https://docs.unity3d.com/ScriptReference/Transform-forward.html
https://docs.unity3d.com/ScriptReference/Rigidbody.AddForce.html

 

the code worked but not in thw way i wanted all it did was push me on the z axis but i wanted to be able to shoot me back in whatever direction i was facing, e.g if i looked down it would shoot me up.

thanks anyway.

 

ok then need to take -transform.forward from the gun