# playMaker

### Author Topic: Gravity  (Read 1618 times)

#### Rabagast

• Hero Member
• Posts: 683
##### Gravity
« on: September 06, 2014, 06:07:28 PM »
Is it possible to have both normal gravity "Y -20" and gravity the other way like "Y 20" at the same time? For example if I have a character on the ground and a character on the roof.
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#### cloud03

• Full Member
• Posts: 238
• Viva Playmaker!
##### Re: Gravity
« Reply #1 on: September 06, 2014, 06:53:01 PM »
With 2D Rigidbody is quite easy to do this, you can set the gravity scale to a negative value, but with 3D Rigidbody there is no option to change the gravity scale. One way to do this by adding a constant force component to the GameObject, and insert a value on the y-axis to be greater than the gravity (ex: 19.6 , from 9.8 multiply by 2). I'm not sure is this actually physically correct, but I've tested it, and it does the job...

#### Lane

• Hero Member
• Posts: 2494
• Mender of the past
##### Re: Gravity
« Reply #2 on: September 06, 2014, 08:37:30 PM »
Gravity is just a force of 9.81 on all rigidbodies on -y. Double it and push to +y and you'll have inverted gravity on select bodies. Basically like cloud described.

#### Rabagast

• Hero Member
• Posts: 683
##### Re: Gravity
« Reply #3 on: September 07, 2014, 02:22:37 AM »
Hi!

I can't have 2D Rigidbody on capsule. Does it need to be a flat 2D object?

Did you try with two objects at the same time, Cloud?
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#### cloud03

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##### Re: Gravity
« Reply #4 on: September 07, 2014, 02:53:09 AM »
yup, I've tested with two objects simultaneously, and it worked...here is the scene example..

#### Rabagast

• Hero Member
• Posts: 683
##### Re: Gravity
« Reply #5 on: September 07, 2014, 03:37:20 AM »
Thank you! I need to have a higher value on Constant Force, because one cube will be on the ground and the other cube will be on the roof. I didn't know about Constant Force, so thank you for that.

But I tried with add force also and checked every frame and that worked also very good. The ground object has Add Force -10 and the roof object has Add Force 10.
Check out our homepage. http://www.walsberg.no
Or my personal game blog for news about my games. http://retro-tetro.walsberg.no