How do I make 2D Physics?

[Johan_Sipili]

Please give me a example on how to make physics, For example collision physics as seen In here

What I’m trying to say Is that How do I make collision physics?
And No I’m not doing Verlet Integration.
If it is the only Type of Physics I could Do in the Wick Editor Then fine.
But I do Want to find out how to do collision physics Since I already Got gravity.

[Johan_Sipili]

Note: How I got gravity was from The post “I dont believe in gravity anymore”.

[awc95014]

2D physics is, uh, really hard to make… i don’t think anyone here has made true physics in any form. as a physics student right now, there are so many things to take into account that it would be really hard to replicate.

i suppose you can look online (youtube probably) for guides about making 2D physics from scratch.

[Johan_Sipili]

Physics engine with verlet integration

This is a physics engine I made with Verlet Integration (there are only circles) Basically, Verlet Integration moves objects based on where it is compared to its previous location, instead of directly using velocity. This makes physics with collisions way easier to implement. Some Issues: There is an issue where if i try to put the movement code into the substepping loop, they will go too fast, but if i divide by the amount of substeps, they slow down too much. Right now, instead of actual…

I want to know a step by step on how to do something like the Forum page Up there.
I need one of the users who knows how to do 2D physics step by step.

[Johan_Sipili]

I hope Someone Comes.

[Donut]

Ok, I’ve been on break so I haven’t really been going on the forum at all, but here’s the main rules my simulation follows.

All objects are circles

If two objects’ distances are < obj1.radius + obj2.radius, they have collided
Basically, make them “point towards” each other and move 1/2 of their combined radius backwards
Velocity is calculated by taking current pos - previous pos (this is what verlet integration is)

that’s basically it.