Change rigidbody's jumping speed

Archived Forums Questions & Answers
1

Hello,

i make a 2d gave and the player is a rigidbody. I use “rigidbody.AddForce(0,300,0)” to make him jump, but I want him to stay less time on air. Like he makes a small vurve from ground to air. In other words I want the falling speed to increase.

How can I do this?

2

track the y position like this:

Vector2 lastPos;
bool movingDown`= false;

void Update()’

if( lastPos.y > transform.position.y `&& movingDown = false`)
{

rigidbody.AddForce(0,-300,0);
movingDown = true;
}

lastPos = transform.position;

So when your y position is lower than the last frame you will start to add force downwards.

3

Possible solutions:

  • You can increase gravity. Go to Edit/Project Settings/Physics. Edit -9.81 to some stronger value. Note you’ll have to increase your force applied in AddForce() to get the same height of jump.
  • You can replace gravity by your own force either in your script, or you can use the Constant Force component.
  • You can add a single burst of force when the object turns around as @highpockets suggests.
  • You could apply (or augment gravity) with a constant force only when the object is dropping. You can use Rigidbody.velocity and apply the force only when the ‘y’ value is negative.