How to implement simple Box2D physics with C3 code? Has anyone studied it。。。

How to achieve changes in the angle and position of an object, and how to determine physical contact

Is there a reason why you can't use Physics and the built-in collision detection?

Is there a reason why you can't use Physics and the built-in collision detection?

yes i had some reason

1 performence 2 physic filter 3 understand the box2d code

Physics behavior performance will likely be a lot better than your code - events are slow.

> physic filter

What does this mean?

Collision filter, I assume.

Physics behavior performance will likely be a lot better than your code - events are slow.

> physic filter

What does this mean?

collsion filter, why event slow？ use event can editor Custom physic code easy，like add collsion filter to obj

You can use the 'Enable/disable collisions' action in the Physics behavior for collision filtering.

Integrating a physics engine with Construct is an advanced topic with lots of complexity. If you are asking for a simple code example, you probably won't get one - it's going to be complicated. As others have advised, by far the easiest thing to do is just use the Physics behavior, which already uses the Box2D physics engine. It also uses a WebAssembly build of the original C++ code for maximum performance.

You can use the 'Enable/disable collisions' action in the Physics behavior for collision filtering.

Unfortunately this is absolutely not sufficient, see these requests here for full info :)

github.com/Scirra/Construct-feature-requests/issues/68

github.com/Scirra/Construct-feature-requests/issues/467

I've been hoping/waiting for this for quite a while now.