How do I make 'Fixed' Jumping (Making the jumping height higher if the player is moving faster)?

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using System;
5.  
6. public class Player : MonoBehaviour
7. {
8.  
9.     [SerializeField] private Transform groundCheckTransform = null;
10.     [SerializeField] private LayerMask playerMask;
11.     private bool jumpKeyWasPressed;
12.     private bool SprintWasPressed;
13.     private float horizontalInput;
14.     private Rigidbody rigidbodyComponent;
15.    
16.  
17.  
18.  
19.     // Start is called before the first frame update
20.     void Start()
21.     {
22.         rigidbodyComponent = GetComponent<Rigidbody>();
23.     }
24.  
25.     // Update is called once per frame
26.     void Update()
27.     {
28.         if (Input.GetKeyDown(KeyCode.Space))
29.  
30.         {
31.             jumpKeyWasPressed = true;
32.            
33.         }
34.  
35.         horizontalInput = Input.GetAxis("Horizontal");
36.  
37.      
38.         {
39.             if (Input.GetKey(KeyCode.LeftShift))
40.             {
41.                 SprintWasPressed = true;
42.             }
43.  
44.         }
45.  
46.        
47.     }
48.  
49.     // FixedUpdate is called once every phyiscs update
50.     void FixedUpdate()
51.     {
52.         rigidbodyComponent.velocity = new Vector3(horizontalInput * 1, rigidbodyComponent.velocity.y, 0);
53.  
54.         if (Physics.OverlapSphere(groundCheckTransform.position, 0.1f, playerMask).Length == 0 )
55.         {
56.             return;
57.         }
58.  
59.         if (jumpKeyWasPressed)
60.  
61.         {
62.             rigidbodyComponent.AddForce(Vector3.up * 7, ForceMode.VelocityChange);
63.             jumpKeyWasPressed = false;
64.         }
65.  
66.         if (SprintWasPressed)
67.         {
68.             rigidbodyComponent.velocity = new Vector3(horizontalInput * 3, rigidbodyComponent.velocity.y, 0);
69.         }
70.        
71.        
72.  
73.     }
74.  
75.  
76. }
77.  
78.  

 

You could use the player's velocity as the basis for deciding how hard to jump upwards.

For right now you seem to have a magic number of "3" in for lateral speed, and another magic number of "7" for the force upwards when you jump.

Instead, assign proper variables and develop a function that converts the current speed into the jump velocity upwards.