62 lines
2.0 KiB
Plaintext
62 lines
2.0 KiB
Plaintext
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package lyra:api;
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interface ecs {
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record entity-id {
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id: u64,
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}
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record entity {
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id: entity-id,
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generation: u64,
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}
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record wasm-type-id {
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// represents a u128, can be converted into that with mem::transmute
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inner: tuple<u64, u64>,
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}
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record component-info {
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host-name: option<string>,
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/// The size of the component in memory.
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size: u64,
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/// The alignment of the component in memory.
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alignment: u64,
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/// The type id of the component.
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///
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/// This must be unique between component types since its used to identify the components
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/// in spawning and querying.
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type-id: wasm-type-id,
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}
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resource ecs-dynamic-view {
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constructor(wrld: borrow<ecs-world>, component-infos: list<component-info>);
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/// Get the bytes of the next row in the view.
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///
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/// A row contains multiple component serialized as bytes. The buffer is tighly packed.
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next: func() -> option<list<u8>>;
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}
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resource ecs-world {
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constructor();
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/// Spawn an entity.
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///
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/// Parameters:
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/// * `components`: A tightly packed byte buffer containing the components to spawn
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/// with the entity. This expects the components in the same order of `component-infos`.
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/// * `component-infos`: A list of `component-infos` uses to identify the components
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/// and specify the layouts of them.
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spawn: func(components: list<u8>, component-infos: list<component-info>) -> entity;
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/// Query for a list of entities and their components.
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///
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/// Parameters:
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/// * `component-infos`: The `component-info`'s of the components that you are querying.
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///
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/// Returns: an iterator that returns the byte buffers of each row.
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view: func(component-infos: list<component-info>) -> ecs-dynamic-view;
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//with_system: func(stage: string, component-infos: list<component-info>, system: func(components: list<u8>));
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}
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}
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