2D Character Randomly Jumping High

I have a game object with Platformer Character 2D script that comes in Unity's standard assets. This game object has a rigidbody and is AI controlled. I have another game object with the Platformer Character 2D script that is player controlled. For some reason, the AI controlled one jumps much higher most of time but not always even though the Jump Force variable in the inspector is set to 1200 for both. They both have the same rigidbody mass so why does this happen?

 

After doing some testing I've figured out that for some reason, my AI character is performing its initial jump and then moments later, jumping again even though it's in the air. I don't see why though. I haven't made any changes to the Platformer Character 2D script as far as I can tell...

 

I have never used the platform character 2d script so I can't comment on what exactly is happening. However, double jumping is a common issue with lots of jumping code. If the code isn't too long, post it here so I can possible see what's going on.

Do you know how its detecting the ground? How does the script know when its in the air?

 

I've had this problem when a character jumps next to another character. I thought it was just my custom-built hacky mess, but I recently tried Corgi Engine and it turns out this issue exists there as well, which unless I'm mistaken doesn't even rely on the physics engine.

 

I am 2 years late, but just in case someone else comes here.

I've had this problem. If you are controlling the Rigidbody character by setting it's velocity, then do not set the velocity in the FixedUpdate() mathod. Do it in Update() method only. It helped me.

 

Using AddForce is probably a safer option that setting velocity.

 

I know this is an old post but people may still come here. I mean I did at first.

At the top create these 2 variables. JumpDelay which can be changed it is the minimum time allowed between a jump.

[SerializeField] float JumpDelay = 0.5f;
private bool CanJump = true;

Changed this function below and add my one underneath it.

public void Move(float move, bool crouch, bool jump)
{
......
......

// If the player should jump...
if (m_Grounded && jump && CanJump)
{
CanJump = false;
Invoke("ResetJump", JumpDelay);
// Add a vertical force to the player.
m_Grounded = false;
m_Rigidbody2D.AddForce(new Vector2(0f, m_JumpForce));
}
}

private void ResetJump() { CanJump = true; }