Physics

[Vrekt]

BTW: I'm going to assign more people to this once they accept.

I'm wanting to add basic physics to the game. Something easy and simple to use. If you have an ideas please share them with me below.

Something like gravity would be simple enough. I'm thinking:

BasicPhysics.handleGravity(myEntity, direction, speed);
or something where the entity implements a physics class and it handles it automatically. I'm not sure still thinking about how to implement it.

[Vrekt]

Basic velocity class -- improve later, thanks minz
https://hastebin.com/edavijinif.java

[rickbau5]

Cool, I’ll take a look

[minz1]

2nd revision: https://hastebin.com/azilisasok.java

This doesn't take into account collisions, but gravity should be accounted for.

[rickbau5]

So I'm not sure that Velocity needs to be a separate class. Velocity is really just a property like position x and y and is only meaningful in that context so I think it makes sense to have it part of the Entity class. Entitys are going to be the only things that really use it as typically entities are the things which are non static, i.e. moving.

Thoughts?

[minz1]

Yeah, I've been mulling over that too. It's probably better that way, actually.

[rickbau5]

Sounds good, i'll throw something together real quick as a proof of concept.

[Vrekt]

I agree, btw i updated the tutorial what do you guys think. I need to include more but its the basic idea.

[rickbau5]

Alright, pushed something to basic-physics branch. It just adds entity velocity. Sorry it took a bit, had to re-setup my dev environment.

Example.

Obviously it's very simple at this point. But it's just to get the ball rolling. I was debating whether the world should handle adjusting velocity of entities based off of gravity or the entities themselves doing that. If it was done this way, then i'd propose adding a affectedByGravity flag to the Entity class, and add an implementation for updateEntity in the World class. Or there could be a new updatePhysics method. Many game engines differentiate between logic updates and physics updates.