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Question by studenyfilip · Apr 08, 2017 at 10:42 AM · collisionrigidbodygravityjumpforce

Rigidbody - How to make it jump and fall down fast ? Help needed.

Hello I have a question about making the character jump with Rigidbody component attached . I tried to do it this way but the character jumps a little and falls slowly. Does anybody knows how to fix this ? Without increasing gravity in the settings ?

 public Rigidbody rb; 
 public float Forward = 4000f;
  public float RL = 100f; 
 bool jump= false; 
 public float JUMP= 50000f; 
 
  void Start () { rb = GetComponent<Rigidbody>(); } 
   void FixedUpdate () 
 { 
    rb.AddForce(0, 0, Forward * Time.deltaTime);
     if (Input.GetKey(KeyCode.D))
           { rb.AddForce(RL * Time.deltaTime, 0,0,ForceMode.VelocityChange);} 
      if (Input.GetKey(KeyCode.A)) 
           { rb.AddForce(-RL * Time.deltaTime,0,0,ForceMode.VelocityChange);}
      if (Input.GetKey(KeyCode.Space) && Jump == true) 
         { rb.AddForce(0, JUMP* Time.deltaTime, 0,ForceMode.VelocityChange); 
 jump = false; } 
 
  private void OnCollisionEnter(Collision collision) { if (collision.collider.tag == "Ground") { jump = true; } }


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Answer by AlharbiSunds · Aug 10, 2018 at 10:48 AM

For me, I increase the mass before the jump (before AddForce statement), then I reduce it again in "OnCollisionEnter".

I do not know if it is a good practice or no, but it works for me

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avatar image eses · Aug 11, 2018 at 04:29 PM 0
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Or, apply custom gravity for special cases, if using 3D Physics (2D Physics has per object gravity scale, IIRC): https://forum.unity.com/threads/why-does-rigidbody-3d-not-have-a-gravity-scale.440415/

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