B
BygZam
Guest
Hi, I'm in the process of trying to make a simple code that will make all objects with in a certain parent group work using simulated gravity on each other.
The idea is I could tag any object with "gravity" by making it part of that group, and I could quickly make entire, say, operating solar systems with out having to program each and every planet to interact with each and every planet.
This is my code
The commented out variable is what I use any time I want to experiment with the force applied, the not commented out one uses the force of attraction measured between two 1kg lead weights 1 meter apart.
It follows the basic calculation for computing gravitational force in real life, which I expected to make objects pull each other towards each other all at once, allowing for a player craft or whatever to realistically zip along from one orbital path to another.
NOW HERE IS THE PROBLEM.
It causes rotation!
There's always at least a tiny bit, and the objects DO seem to attract towards each other. I've put a few "baby planets" in and my test shuttle always gets dragged to them.. but it does so while spinning.
Obviously, there's nothing in there telling it to spin. I am not sure if it's the natural result of attractive forces, or if I've messed up in my code, or if there is something else I haven't thought of. I'm sure it's some super simple thing I haven't thought of yet but it's been driving me up a wall for two days now and I decided to finally seek some help.
Thank you for any help you can offer.
The idea is I could tag any object with "gravity" by making it part of that group, and I could quickly make entire, say, operating solar systems with out having to program each and every planet to interact with each and every planet.
This is my code
Code:
with (obj_Parent_Gravity)
{
//g_Force = 6.673 * power(10,-11) * self.phy_mass * other.phy_mass / power(distance_to_object(other), 2);
g_Force = 6.673 * power(2.71828,-11) * self.phy_mass * other.phy_mass / power(distance_to_object(other), 2);
physics_apply_force(other.x, other.y, g_Force, g_Force);
}It follows the basic calculation for computing gravitational force in real life, which I expected to make objects pull each other towards each other all at once, allowing for a player craft or whatever to realistically zip along from one orbital path to another.
NOW HERE IS THE PROBLEM.
It causes rotation!
There's always at least a tiny bit, and the objects DO seem to attract towards each other. I've put a few "baby planets" in and my test shuttle always gets dragged to them.. but it does so while spinning.
Obviously, there's nothing in there telling it to spin. I am not sure if it's the natural result of attractive forces, or if I've messed up in my code, or if there is something else I haven't thought of. I'm sure it's some super simple thing I haven't thought of yet but it's been driving me up a wall for two days now and I decided to finally seek some help.
Thank you for any help you can offer.