How I can simulate gravity attraction or inverse on a object by many planets, depending by her mass :
I have tried the rex gravitation plugin (behavior-gravitation-for-physics-behavior_t70521) but I can't do antigravitation (negative force) and Yann algorithm (black-hole-physics_t66424?start=10) but I can't do many planets.
Current event with rex gravitation plugin :
The object is the BluePlanet and planets are GreenPlanet.
Thanks in advance.
I've made something like that one time. It's not a true solar system cause it's no using any physics behavior.
Create three object : A sun , a planet and a mouse object.
Add a behavior for the planet : bullet
Now in the event sheet create a variable named "Attraction"
We always need to set the planet perpendicular to the sun :
Every ticks :
planet set angle to Sun.X Sun.Y
planet rotate 90 degrees conter-clockwise
You can change the gravity by adding a "-Attraction" beside the 90 :
planet rotate 90-Attraction degrees conter-clockwise
You can add a event to change the attraction in game
On mouse wheel down : substracte 0.1 to Attraction
On mouse wheel up : add 0.1 to Attraction
You can create different planet with different size.
I know it 's like a fake solar system but i havent better.
Maybe some expert will come soon to give you a better soluce (scirra have a good community
Sorry for my english, i'm french so i wonder you will understand me x)
The problem is that my object isn't static, the object have an force on it, I want that the object path being affected by the planets attraction. Thanks anyway !
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Current event added.