#How to nest custom asset formats?

5 messages · Page 1 of 1 (latest)

fierce granite
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I have a requirement for custom assets. I have a file that contains an image and some strings. How can I parse it into the following structure?
This looks like the Image is nested inside

#[derive(Asset, TypePath, Debug)]
pub struct CustomAsset {
    img: Handle<Image>,
    name: String,
}

This file will be a custom format file, and its binary data will be arranged according to a set of rules I preset. For example, strings are saved from 0 to 255, and the rest is image data encoded in PNG format. I can parse the character string from the binary data of this file, and the binary data of the image can be parsed into vec<u8>format. However, how can vec<u8>be further converted into Handle<Image>so that the sprite component can use it?

rancid wyvern
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you can do this

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so

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  1. https://docs.rs/bevy/latest/bevy/asset/trait.AssetLoader.html
  2. https://docs.rs/bevy/latest/bevy/image/struct.Image.html#method.new
  3. https://docs.rs/bevy/latest/bevy/asset/struct.LoadContext.html#method.add_labeled_asset - not quite sure what labeled means but it returns a Handle so should be fine
AssetLoader in bevy::asset - Rust

Loads an Asset from a given byte Reader. This can accept AssetLoader::Settings, which configure how the Asset should be loaded.

Image in bevy::image - Rust

API documentation for the Rust Image struct in crate bevy.

LoadContext in bevy::asset - Rust

A context that provides access to assets in AssetLoaders, tracks dependencies, and collects asset load state.

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@fierce granite hope that helps