goods
Easy-to-use asset manager for many environments.
Easy-to-use asset manager for many environments.
Goals
This crate is written with following goals in mind:
-
Batteries included.
Crate comes with variety of simple data sources likeFileSource
andHttpSource
. FewFormat
s based on serde are included under feature flags.
MoreSource
s andFormat
s can be added. -
Extensibility.
MultipleFormat
traits can be implemented for any asset type, including foreign asset types.
For exampleJsonFormat
,YamlFormat
andRonFormat
(bundled in the crate) implementFormat
trait for any asset type which intermediate representation implementsserde::de::DeserializeOwned
. -
Supporting WebAssembly.
All mandatory dependencies are WASM-compatible and no threading is required for asset loading to work. -
Working with asynchronous data sources.
All data sources must implementSource
trait.Source::read
method returns future that will be driven to completion by the bound executor - seeSpawn
. -
no_std
Butalloc
is required. -
Fast compilation.
build aftercargo clean
takes ~3s.
Non-Goals
This crate is not aimed to support every possible feature. Here's list of some of those features:
- Hot-reloading
Currently there are no plans to support hot-reloading.
Features
All out-of-the-box functionality exept core traits and types can be enabled with features.
General
std
- adds implementation ofstd::error::Error
trait for error types. Enabled by default.sync
- makes most typesSend
and someSync
. Adds requirements for traits implementations to beSend
andSync
where needed. Enabled by default.
Sources
fs
(enablesstd
) - addsFileSource
-Source
implementation that loads asset bytes from file-system.reqwest
- addsReqwestSource
-Source
implementation that loads asset bytes from URLs usingreqwest
. Using this source requires spawner to spawn tasks withtokio
. Otherwisereqwest
interals will panic.fetch
- addsFetchSource
that uses browser's Fetch API to load assets data. Conflicts withsync
feature.
Formats
json-format
- addsJsonFormat
-Format
implementation that treats asset bytes as JSON document and deserializes asset representation via serdeyaml-format
- addsYamlFormat
-Format
implementation that treats asset bytes as YAML document and deserializes asset representation via serderon-format
- addsRonFormat
-Format
implementation that treats asset bytes as RON document and deserializes asset representation via serde
Spawners
futures-spawn
- addsSpawn
implementation forfutures_task::Spawn
(akafutures::task::Spawn
) allowing to use compatible spawners to drive loading tasks to completion.wasm-bindgen-spawn
- addsSpawn
implementations that useswasm_bindgen_futures::spawn_local
to drive loadin tasks. Usable only onwasm32
target.tokio-spawn
- addsSpawn
implementation forgoods::Tokio
(tokio::runtime::Handle
wrapper) allowing tokio to drive loading tasks.ReqwestSource
requirestokio
runtime.
Examples
There are few simple examples provided already.
fs examlple
Shows how to build registry with FileSource
and load simple assets from it.
reqwest example
Async example that loads assets using HTTP protocol with tokio
and reqwest
crates.
fetch example
Shows how to load assets in browser using Fetch API.
This example can be built using build-wasm32.sh or build-wasm32.bat in examples directory.
wasm-bindgen
(compatible version) and wasm-opt
must be in PATH
Then open http://localhost:8000/fetch in your favorite browser. Loaded assets must be shown on the page. Otherwise see for errors in log.
Gotchas
- Currently asyn/await doesn't work with
no_std
onstable
sync
conflicts withfetch
feature. But in generalsync
is not necessary when targeting web browser.
License
This repository is licensed under either of
- Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
- MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)
at your option.
Contribution Licensing
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.