Variable jump in C#

Hi, I have a code which is basically perfect for jump and doublejump but the character has a fixed jumping height. What I'm looking for is a "super mario jumping effect". Press the jump button really fast, jump a little, keep it pressed , jump a little higher and so on. (hope I explained myself well, if not, I'll try again).

this is the code

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class CharController : MonoBehaviour
5. {
6.     [SerializeField] private float m_JumpForce;
7.     [SerializeField] private float moveSpeed;
8.     [SerializeField] private LayerMask m_WhatIsGround;
9.    
10.     private Transform m_GroundCheck;
11.     private Transform m_GroundCheckS;
12.     const float k_GroundedRadius = .15f;
13.    
14.     private bool cir_Grounded;
15.     private bool cir_GroundedS;
16.     private bool is_Grounded;
17.     private bool doubleJump;
18.    
19.     private Rigidbody2D m_Rigidbody2D;
20.    
21.     // Use this for initialization
22.     void Start()
23.     {
24.         m_GroundCheck = transform.Find("groundCheck");
25.         m_GroundCheckS = transform.Find("groundCheckS");
26.         m_Rigidbody2D = GetComponent<Rigidbody2D>();  
27.  
28.         gameObject.transform.position = new Vector2 (10, 30);
29.     }
30.    
31.     void Update()
32.     {
33.         cir_Grounded = false;
34.         cir_GroundedS = false;
35.         is_Grounded = false;
36.  
37.         Collider2D[] colliders = Physics2D.OverlapCircleAll(m_GroundCheck.position, k_GroundedRadius, m_WhatIsGround);
38.         for (int i = 0; i < colliders.Length; i++)
39.         {
40.             if (colliders[i].gameObject != gameObject)
41.                 cir_Grounded = true;
42.         }
43.        
44.         Collider2D[] colliders2 = Physics2D.OverlapCircleAll(m_GroundCheck.position, k_GroundedRadius, m_WhatIsGround);
45.         for (int i = 0; i < colliders2.Length; i++)
46.         {
47.             if (colliders2[i].gameObject != gameObject)
48.                 cir_GroundedS = true;
49.         }
50.        
51.         if (cir_GroundedS && cir_Grounded)
52.         {
53.             is_Grounded = true;
54.         }
55.  
56.         //m_Rigidbody2D.velocity = new Vector2 (moveSpeed, m_Rigidbody2D.velocity.y); //Moves the player horizontally
57.  
58.         if (Input.GetKeyDown ("space"))
59.         {
60.             if (is_Grounded)
61.             {
62.                 is_Grounded = false;
63.                 cir_Grounded = false;
64.                 cir_GroundedS = false;
65.                 m_Rigidbody2D.velocity = new Vector2(m_Rigidbody2D.velocity.x, 0);
66.                 m_Rigidbody2D.AddForce (new Vector2(0f, m_JumpForce));
67.                 doubleJump = true;
68.             }
69.             else if (doubleJump)
70.             {
71.                 m_Rigidbody2D.velocity = new Vector2(m_Rigidbody2D.velocity.x, 0);
72.                 m_Rigidbody2D.AddForce (new Vector2(0f, m_JumpForce));
73.                 doubleJump = false;
74.             }
75.         }
76.     }
77. }

Thanks for the attention

 

Put it inside FixedUpdate for results that won't vary wildly depending on framerate.

 

Thank you for replying, as soon as I get them working I'll let you know. The solution concept is so easy, thanks again.

 

I know, double post but need to ask you an opinion (actually if we can discuss about a code).
Basically this it the Gamasutra page I took the idea of how to make a variable height jump the first time: http://www.gamasutra.com/blogs/DanielFineberg/20150825/244650/Designing_a_Jump_in_Unity.php

this is the code in short (a simplified version of it):

Code (CSharp):

1.  
2. void Update()
3. {
4.     if(jumpButtonDown && !jumping)
5.     {
6.         jumping = true;
7.         StartCoroutine(JumpRoutine());
8.     }
9. }
10.  
11. IEnumerator JumpRoutine()
12. {
13.     rigidbody.velocity = Vector2.zero;
14.     float timer = 0;
15.      
16.     while(jumpButtonPressed && timer < jumpTime)
17.     {
18.         //Calculate how far through the jump we are as a percentage
19.         //apply the full jump force on the first frame, then apply less force
20.         //each consecutive frame
21.          
22.         float proportionCompleted = timer / jumpTime;
23.         Vector2 thisFrameJumpVector = Vector2.Lerp(jumpVector, Vector2.zero, proportionCompleted);
24.         rigidbody.AddForce(thisFrameJumpVector);
25.         timer += Time.deltaTime;
26.         yield return null;
27.     }
28.      
29.     jumping = false;
30. }
31. }

So, how in the world can they get the button pressed and put it in a while loop without make Unity crash (every time I tried it crashed). To compare the "while loop" with an "if statement" (that holds a "input.getkey"), the while loop never ends until the conditions are met, but what about the "if statement"? does it exits every frame but still holding the condition Input.getkey?

 

Can somebody please tell me what this 'jumpVector' is and which values it should have? Plus, the way this C# code on gamasutra is written, it does not work for me at all. I change that first rigidbody.velocity to the new AddForce standard but the player never reacts to the pressed button. Only to the initial first frame push. Please help.

 

It's the direction you're jumping in!

probably something along the lines of:

Code (csharp):

1. Vector2.up + currentVelocity.x;

Note that I'm not normalizing the vector. That gives Mario rules, where a standing jump and a running jump gives the same height.

 

I stumbled across this tutorial series recently while looking for an alternative solution to my problem.

I remember it having a intuitive variable jump solution. I recommend a watch.

Kind Regards,
Joe