where are you getting the ComponentId
#how do u deserialize a component from componentid and vec<u8>
buoyant raft
honest walrus
I mean, assuming you know what type of component that it should be, you can just transform the vec<u8> into whatever into whatever component using std::mem::transmute
mental kelp
I mean, assuming you know what type of component that it should be, you can just...
do u know postcard? it was serialized with postcard so i dont think itll work
mental kelp
where are you getting the ComponentId
from a registry
mental kelp
do u know postcard? it was serialized with postcard so i dont think itll work
also i dont have the type for the component
buoyant raft
transmuting a vec wouldn't even work if the data was the representation of the type
honest walrus
transmuting a vec wouldn't even work if the data was the representation of the t...
Why not?
honest walrus
also i dont have the type for the component
Then I think you have to reach somewhere deep into the ecs, and I wouldn't know how to do that, sorry...
buoyant raft
because a vec is two sizes and a pointer?
buoyant raft
even then it'd have to be repr "C"
and there'd be an extra conversion to make it Sized
Components:;get_info() looks relevant
can get the TypeId there
honest walrus
What do you want to do with the component? Is it already going to be registered, or are you trying to register a new one?
buoyant raft
presumably if there's a componentid it's registered already
honest walrus
Yeah, presumably, but since it's being deserialized, that implies that it was stored in a previous run, and that could mean that the component id's don't line up any more...
buoyant raft
the id is from a "registry", so hopefully that means it's not being deserialized
buoyant raft
from a registry
more specific?
oh World::get_reflect looks handy
night be possible via reflect_trait
buoyant raft
okay i think the options are
fn dyn_deserialize(TypeId, Vec<u8>) -> Box<dyn Any + Deserialize> (with some elseifs for known type ids)
or
#[reflect_trait]
trait ReflectDeserialize: Deserialize + Any {
deserialize(Vec<u8>) -> Self;
}
@mental kelp
mental kelp
okay i think the options are
fn dyn_deserialize(TypeId, Vec<u8>) -> Box<dyn Any...
how u get the typeid bro
wait nvm its the std typeid
buoyant raft
Components:;get_info() looks relevant
.
also, not a bro
could probably make dyn_deserialize a big match statement, if Any is const
mental kelp
.
The layout from componentinfo is private
i didnt look that much maybe theres a method that returns it
buoyant raft
if you share the source, it sounds like an interesting challenge
mental kelp
if you share the source, it sounds like an interesting challenge
cant rn
but the concept is deserializing a vec<u8> with just the component id
and it was serialized with serde
what a challenge huh
buoyant raft
just the component id, no World?
the interesting challenge is making it well, making it at all is easier
mental kelp
just the component id, no World?
ofc the world is there
buoyant raft
then you can get Components, turn the ComponentId into a TypeId, match on that, and downcast via Any
or otherwise reflect it somewhere
mental kelp
then you can get Components, turn the ComponentId into a TypeId, match on that, ...
yea and how is deserialize gonna work
buoyant raft
either via a trait or a type id list
mental kelp
i need the concrete type for it
buoyant raft
okay i think the options are
fn dyn_deserialize(TypeId, Vec<u8>) -> Box<dyn Any...
these
with reflection it's a little more complex, but the simple dyn Any version is just that first one
mental kelp
i dont think the crate i use will let me be using typeid