# Gravity flipping

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### » Tue Dec 13, 2011 11:14 am

Hi everyone,
using physics behaviour for sprites, i can set world gravity to a posite or negative values following the convention that positive values go from top to bottom of the screen

i was wondering if i could set world gravity along X axes (i.e. from left to right or right to left) insted of Y one.

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### » Tue Dec 13, 2011 11:21 am

Use the physics object --

ON Collision with object ->
object.setWorldGravity -> -10(or whatever you want.)
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### » Tue Dec 13, 2011 11:37 am

[QUOTE=smitchell] Use the physics object --

ON Collision with object ->
object.setWorldGravity -> -10(or whatever you want.) [/QUOTE]

thanks smitchell, but as i mentioned, issuing a value of "-10" flips gravity from bottom to top along Y axes, right?

i'd like to change gravity along orthogonal axes (X axes), i.e. to make falling objects from left to right of the screen
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### » Tue Dec 13, 2011 11:54 am

Can you not apply an impulse every tick? Would that not work..
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### » Tue Dec 13, 2011 12:50 pm

PhysicsGravity.capx

Gravity is a dark force
Last edited by Yann on Sun Sep 14, 2014 10:47 pm, edited 1 time in total.
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### » Tue Dec 13, 2011 1:08 pm

[QUOTE=Yann] http://dl.dropbox.com/u/23551572/C2/PhysicsGravity.capx

Gravity is a dark force[/QUOTE]

thanks Yann i understood the trick involved in your example, it gave me the right input to my brain;

but maybe i should try a more robust way of controlling the gravity since i need to do a character/environement management with changing gravity vector
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