bevy_cell

🦊 Easily attach bevy's Handles/Entities statically to types
🐑 Get them in any system, without using Resources.
🦄 See type_cell for any other use case!

[dependencies]
bevy_cell = "0.13"

use bevy_cell::*;

I. There are 2 valid syntaxes:
🐰 {Type} [name1] [name2] [name3]
🦝 Type: [name1] [name2] [name3];

II. The syntax inside the [] will change the attached type:
🐈 Entity - Just choose a name: [camera]
🦥 Handle - Its type separated by a |: [Image|cat]
🐹 Raw - Its type separated by a :: [Image:cat]
🐒 If no type is set, the parent type is used: [|cat] [:cat]

III. Setting the collection type is also done inside []:
🦄 Single - Using the syntax as in II.
🐔 Vec - add a <> after the name: [cameras<>]
🐲 HashMap - add a <KeyType> after the name: [cameras<usize>]

// Macro Examples
bycell! {
    Camera: [main] [secondary];
    AudioSource: [|hit] [|shots<>];
    Player: [main] [Scene|models<u8>];
}

IV. Setting Values:
🐑 Use Type::set_..(value) ONCE on (pre-)startup
🦌 The value can be anything implementing its type!

// Setter Examples
Camera::set_main(commands.spawn(..).id());
AudioSource::set_shots([
    assets.load("shot0.ogg"),
    assets.load("shot1.ogg"),
    assets.load("shot3.ogg"),
]);
Player::set_models([
    (5, assets.load("player5.glb")),
    (7, assets.load("player7.glb")),
]);

V. Getting Values:
🐏 Different getters are provided, depending on the collection type!

// Single Getter
Camera::main();            // Cloned
Camera::main_ref();        // Static Reference
// Vec Getters
AudioSource::shots(1);     // Cloned
AudioSource::shots_ref(1); // Static Reference
AudioSource::shots_vec();  // Static Reference to Vec
// HashMap Getters
Player::models(&5);        // Cloned
Player::models_ref(&5);    // Static Reference
Player::models_map();      // Static Reference to HashMap

VI. Mutability:
🐝 You can make any of those mutable by adding a mut before the name
🦞 Only use this if you can avoid race conditions
🦧 One idea is to mutate something on state change!

// Macro Examples
bycell! {
    Camera: [mut main] [mut secondary];
    AudioSource: [|mut hit] [|mut shots<>];
    Player: [mut main] [Scene|mut models<u8>];
}

License