PoC for spawning entities with components and querying them
This commit is contained in:
parent
1c5a24c320
commit
57539df4e7
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@ -0,0 +1,3 @@
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[submodule "lyra-engine"]
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path = lyra-engine
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url = git@git.seanomik.net:SeanOMik/lyra-engine.git
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@ -67,6 +67,12 @@ dependencies = [
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"syn",
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]
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[[package]]
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name = "atomic_refcell"
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version = "0.1.13"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "41e67cd8309bbd06cd603a9e693a784ac2e5d1e955f11286e355089fcab3047c"
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[[package]]
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name = "autocfg"
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version = "1.2.0"
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@ -655,6 +661,12 @@ dependencies = [
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"stable_deref_trait",
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]
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[[package]]
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name = "glam"
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version = "0.24.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "b5418c17512bdf42730f9032c74e1ae39afc408745ebb2acf72fbc4691c17945"
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[[package]]
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name = "hashbrown"
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version = "0.13.2"
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@ -854,6 +866,36 @@ version = "0.4.21"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "90ed8c1e510134f979dbc4f070f87d4313098b704861a105fe34231c70a3901c"
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[[package]]
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name = "lyra-ecs"
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version = "0.1.0"
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dependencies = [
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"anyhow",
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"atomic_refcell",
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"lyra-ecs-derive",
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"lyra-math",
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"paste",
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"rand",
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"thiserror",
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"tracing",
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]
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[[package]]
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name = "lyra-ecs-derive"
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version = "0.1.0"
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dependencies = [
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"proc-macro2",
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"quote",
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"syn",
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]
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[[package]]
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name = "lyra-math"
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version = "0.1.0"
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dependencies = [
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"glam",
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]
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[[package]]
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name = "mach"
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version = "0.3.2"
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@ -2228,6 +2270,7 @@ name = "wittest"
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version = "0.1.0"
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dependencies = [
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"async-trait",
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"lyra-ecs",
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"tokio",
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"wasmtime",
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"wasmtime-wasi",
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@ -11,3 +11,4 @@ async-trait = "0.1.80"
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tokio = { version = "1.37.0", features = ["full"] }
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wasmtime = "19.0.2"
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wasmtime-wasi = "19.0.2"
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lyra-ecs = { path = "./lyra-engine/lyra-ecs" }
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@ -0,0 +1 @@
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Subproject commit 60ec62c55828a4ea273a10e5614e7cc589b005cf
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144
src/main.rs
144
src/main.rs
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use std::alloc::Layout;
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use std::any::TypeId;
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use std::mem;
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use std::ptr::NonNull;
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use async_trait::async_trait;
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use component::witguest::{ecs_world, math};
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use ecs::query::dynamic::QueryDynamicType;
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use lyra_ecs::{Component, World};
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use lyra_ecs as ecs;
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use lyra_engine::ecs::component::witguest::ecs_world::WasmTypeId;
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use wasmtime_wasi::WasiView;
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#[allow(unused_imports)]
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pub(crate) mod lyra_engine {
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pub(crate) mod ecs {
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pub use super::super::*;
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}
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}
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wasmtime::component::bindgen!({
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world: "example",
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path: "witguest/wit/world.wit",
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async: true,
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});
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struct Imports {
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impl WasmTypeId {
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pub fn of<T: 'static>() -> Self {
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Self {
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inner: unsafe { mem::transmute(TypeId::of::<T>()) },
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}
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}
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}
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impl Into<ecs::DynTypeId> for WasmTypeId {
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fn into(self) -> ecs::DynTypeId {
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// SAFETY: the memory layout of (u64, u64) is the same as u128
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ecs::DynTypeId::Unknown(unsafe { mem::transmute(self.inner) })
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}
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}
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impl Into<ecs::ComponentInfo> for ecs_world::ComponentInfo {
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fn into(self) -> ecs::ComponentInfo {
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ecs::ComponentInfo::new_unknown(
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None,
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self.type_id,
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Layout::from_size_align(self.size as _, self.alignment as _).unwrap(),
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)
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}
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}
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impl From<ecs::Entity> for ecs_world::Entity {
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fn from(value: ecs::Entity) -> Self {
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Self {
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id: ecs_world::EntityId { id: value.id().0 },
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generation: value.generation(),
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}
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}
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}
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#[repr(C)]
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#[derive(Debug, Clone, Copy, PartialEq, Component)]
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struct Vec3 {
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x: f32,
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y: f32,
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z: f32,
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}
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struct Imports {
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world: lyra_ecs::World,
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}
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impl WasiView for Imports {
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@ -24,12 +85,68 @@ impl WasiView for Imports {
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#[async_trait]
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impl ExampleImports for Imports {
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async fn host_test(&mut self,) -> wasmtime::Result<()> {
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println!("This is the host saying hi from the guest!");
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async fn host_print(&mut self, msg: String) -> wasmtime::Result<()> {
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println!("{}", msg);
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Ok(())
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}
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}
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impl math::Host for Imports {}
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#[async_trait]
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impl ecs_world::Host for Imports {
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async fn spawn(
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&mut self,
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mut components: Vec<u8>,
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infos: Vec<ecs_world::ComponentInfo>,
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) -> wasmtime::Result<ecs_world::Entity> {
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// add the components in the tightly packed `components` buffer into the dynamic bundle
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let mut bundle = ecs::DynamicBundle::new();
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let mut offset = 0;
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for info in infos {
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// SAFETY: The components are tightly packed, adding the offset to the pointer will
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// get the next component in the buffer.
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let data_ptr = unsafe { NonNull::new_unchecked(components.as_mut_ptr().add(offset)) };
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bundle.push_unknown(data_ptr, info.into());
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offset += info.size as usize;
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}
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let en = self.world.spawn(bundle);
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Ok(en.into())
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}
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async fn view(&mut self, infos: Vec<ecs_world::ComponentInfo>) -> wasmtime::Result<Vec<u8>> {
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// Create a dynamic view for querying for the components
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let mut view = self.world.dynamic_view();
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for info in infos.clone() {
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view.push(QueryDynamicType::from_info(info.into()));
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}
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// allocate the row of components
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let total_len = infos.iter().map(|i| i.size as usize).sum();
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let mut components = Vec::with_capacity(total_len);
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// copy each row of the query into the set of components. could get pretty big, but its a PoC so :shrug:
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for row in view.into_iter() {
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let first = row.iter().next().unwrap();
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let mut comp = Vec::<u8>::with_capacity(first.info.layout().size());
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unsafe {
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std::ptr::copy_nonoverlapping(
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first.ptr.as_ptr(),
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comp.as_mut_ptr(),
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first.info.layout().size(),
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);
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comp.set_len(first.info.layout().size());
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}
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components.extend(comp.into_iter());
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}
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Ok(components)
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}
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}
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#[tokio::main]
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async fn main() -> wasmtime::Result<()> {
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// Instantiate the engine and store
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config.async_support(true);
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let engine = wasmtime::Engine::new(&config)?;
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let mut store = wasmtime::Store::new(&engine, Imports {});
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// Load the component from disk
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let bytes = std::fs::read("target/wasm32-wasi/debug/witguest.wasm")?;
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let component = wasmtime::component::Component::new(&engine, bytes)?;
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// Configure the linker
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let mut linker = wasmtime::component::Linker::new(&engine);
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wasmtime_wasi::bindings::Imports::add_to_linker(&mut linker, |s| s)?;
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Example::add_to_linker(&mut linker, |s| s)?;
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// memory per instance
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let mut store = wasmtime::Store::new(
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&engine,
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Imports {
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world: World::new(),
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},
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);
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// Load the component from disk
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let bytes = std::fs::read("target/wasm32-wasi/debug/witguest.wasm")?;
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let component = wasmtime::component::Component::new(&engine, bytes)?;
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// Instantiate the component
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println!("creating example");
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let (example, _instance) = Example::instantiate_async(&mut store, &component, &linker).await?;
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let result = example.call_hello_world(&mut store).await?;
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println!("Guest says: {}", result);
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let result = example.call_on_init(&mut store).await?.unwrap();
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println!("Guest returned: {}", result);
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Ok(())
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}
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// Generated by `wit-bindgen` 0.18.0. DO NOT EDIT!
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#[allow(unused_unsafe, clippy::all)]
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pub fn host_test(){
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pub fn host_print(msg: &str,){
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#[allow(unused_imports)]
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use wit_bindgen::rt::{alloc, vec::Vec, string::String};
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unsafe {
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let vec0 = msg;
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let ptr0 = vec0.as_ptr() as i32;
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let len0 = vec0.len() as i32;
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#[cfg(target_arch = "wasm32")]
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#[link(wasm_import_module = "$root")]
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extern "C" {
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#[link_name = "host-test"]
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fn wit_import();
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#[link_name = "host-print"]
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fn wit_import(_: i32, _: i32, );
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}
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#[cfg(not(target_arch = "wasm32"))]
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fn wit_import(){ unreachable!() }
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wit_import();
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fn wit_import(_: i32, _: i32, ){ unreachable!() }
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wit_import(ptr0, len0);
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}
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}
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const _: () = {
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#[doc(hidden)]
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#[export_name = "hello-world"]
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#[export_name = "on-init"]
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#[allow(non_snake_case)]
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unsafe extern "C" fn __export_hello_world() -> i32 {
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unsafe extern "C" fn __export_on_init() -> i32 {
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#[allow(unused_imports)]
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use wit_bindgen::rt::{alloc, vec::Vec, string::String};
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#[cfg(target_arch="wasm32")]
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wit_bindgen::rt::run_ctors_once();
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let result0 = <_GuestImpl as Guest>::hello_world();
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let result0 = <_GuestImpl as Guest>::on_init();
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let ptr1 = _RET_AREA.0.as_mut_ptr() as i32;
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let vec2 = (result0.into_bytes()).into_boxed_slice();
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let ptr2 = vec2.as_ptr() as i32;
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let len2 = vec2.len() as i32;
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::core::mem::forget(vec2);
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*((ptr1 + 4) as *mut i32) = len2;
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*((ptr1 + 0) as *mut i32) = ptr2;
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ptr1
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match result0 {
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Ok(e) => { {
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*((ptr1 + 0) as *mut u8) = (0i32) as u8;
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*((ptr1 + 1) as *mut u8) = (wit_bindgen::rt::as_i32(e)) as u8;
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} },
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Err(_) => { {
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*((ptr1 + 0) as *mut u8) = (1i32) as u8;
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} },
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};ptr1
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}
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const _: () = {
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#[doc(hidden)]
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#[export_name = "cabi_post_hello-world"]
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#[allow(non_snake_case)]
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unsafe extern "C" fn __post_return_hello_world(arg0: i32,) {
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let l0 = *((arg0 + 0) as *const i32);
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let l1 = *((arg0 + 4) as *const i32);
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wit_bindgen::rt::dealloc(l0, (l1) as usize, 1);
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}
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};
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};
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use super::Component as _GuestImpl;
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pub trait Guest {
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fn hello_world() -> wit_bindgen::rt::string::String;
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fn on_init() -> Result<u8,()>;
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}
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#[allow(unused_imports)]
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use wit_bindgen::rt::{alloc, vec::Vec, string::String};
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#[repr(align(4))]
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struct _RetArea([u8; 8]);
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static mut _RET_AREA: _RetArea = _RetArea([0; 8]);
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#[repr(align(1))]
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struct _RetArea([u8; 2]);
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static mut _RET_AREA: _RetArea = _RetArea([0; 2]);
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pub mod component {
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pub mod witguest {
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#[allow(clippy::all)]
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pub mod math {
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#[used]
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#[doc(hidden)]
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#[cfg(target_arch = "wasm32")]
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static __FORCE_SECTION_REF: fn() = super::super::super::__link_section;
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}
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#[allow(clippy::all)]
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pub mod ecs_world {
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#[used]
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#[doc(hidden)]
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#[cfg(target_arch = "wasm32")]
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static __FORCE_SECTION_REF: fn() = super::super::super::__link_section;
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/// use math.{vec3};
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#[repr(C)]
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#[derive(Clone, Copy)]
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pub struct EntityId {
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pub id: u64,
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}
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impl ::core::fmt::Debug for EntityId {
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fn fmt(&self, f: &mut ::core::fmt::Formatter<'_>) -> ::core::fmt::Result {
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f.debug_struct("EntityId").field("id", &self.id).finish()
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}
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}
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#[repr(C)]
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#[derive(Clone, Copy)]
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pub struct Entity {
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pub id: EntityId,
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pub generation: u64,
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}
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impl ::core::fmt::Debug for Entity {
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fn fmt(&self, f: &mut ::core::fmt::Formatter<'_>) -> ::core::fmt::Result {
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f.debug_struct("Entity").field("id", &self.id).field("generation", &self.generation).finish()
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}
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}
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#[repr(C)]
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#[derive(Clone, Copy)]
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pub struct WasmTypeId {
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pub inner: (u64,u64,),
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}
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impl ::core::fmt::Debug for WasmTypeId {
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fn fmt(&self, f: &mut ::core::fmt::Formatter<'_>) -> ::core::fmt::Result {
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f.debug_struct("WasmTypeId").field("inner", &self.inner).finish()
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}
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}
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#[repr(C)]
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#[derive(Clone, Copy)]
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pub struct ComponentInfo {
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pub size: u64,
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pub alignment: u64,
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pub type_id: WasmTypeId,
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}
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impl ::core::fmt::Debug for ComponentInfo {
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fn fmt(&self, f: &mut ::core::fmt::Formatter<'_>) -> ::core::fmt::Result {
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f.debug_struct("ComponentInfo").field("size", &self.size).field("alignment", &self.alignment).field("type-id", &self.type_id).finish()
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}
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}
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#[allow(unused_unsafe, clippy::all)]
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/// expects components to be tightly packed in the same order of component-infos
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pub fn spawn(components: &[u8],component_infos: &[ComponentInfo],) -> Entity{
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#[allow(unused_imports)]
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use wit_bindgen::rt::{alloc, vec::Vec, string::String};
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unsafe {
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#[repr(align(8))]
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struct RetArea([u8; 16]);
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let mut ret_area = ::core::mem::MaybeUninit::<RetArea>::uninit();
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let vec0 = components;
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let ptr0 = vec0.as_ptr() as i32;
|
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let len0 = vec0.len() as i32;
|
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let vec1 = component_infos;
|
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let ptr1 = vec1.as_ptr() as i32;
|
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let len1 = vec1.len() as i32;
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let ptr2 = ret_area.as_mut_ptr() as i32;
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#[cfg(target_arch = "wasm32")]
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#[link(wasm_import_module = "component:witguest/ecs-world")]
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extern "C" {
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#[link_name = "spawn"]
|
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fn wit_import(_: i32, _: i32, _: i32, _: i32, _: i32, );
|
||||
}
|
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#[cfg(not(target_arch = "wasm32"))]
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fn wit_import(_: i32, _: i32, _: i32, _: i32, _: i32, ){ unreachable!() }
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wit_import(ptr0, len0, ptr1, len1, ptr2);
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let l3 = *((ptr2 + 0) as *const i64);
|
||||
let l4 = *((ptr2 + 8) as *const i64);
|
||||
Entity{
|
||||
id: EntityId{
|
||||
id: l3 as u64,
|
||||
},
|
||||
generation: l4 as u64,
|
||||
}
|
||||
}
|
||||
}
|
||||
#[allow(unused_unsafe, clippy::all)]
|
||||
pub fn view(component_infos: &[ComponentInfo],) -> wit_bindgen::rt::vec::Vec::<u8>{
|
||||
|
||||
#[allow(unused_imports)]
|
||||
use wit_bindgen::rt::{alloc, vec::Vec, string::String};
|
||||
unsafe {
|
||||
|
||||
#[repr(align(4))]
|
||||
struct RetArea([u8; 8]);
|
||||
let mut ret_area = ::core::mem::MaybeUninit::<RetArea>::uninit();
|
||||
let vec0 = component_infos;
|
||||
let ptr0 = vec0.as_ptr() as i32;
|
||||
let len0 = vec0.len() as i32;
|
||||
let ptr1 = ret_area.as_mut_ptr() as i32;
|
||||
#[cfg(target_arch = "wasm32")]
|
||||
#[link(wasm_import_module = "component:witguest/ecs-world")]
|
||||
extern "C" {
|
||||
#[link_name = "view"]
|
||||
fn wit_import(_: i32, _: i32, _: i32, );
|
||||
}
|
||||
|
||||
#[cfg(not(target_arch = "wasm32"))]
|
||||
fn wit_import(_: i32, _: i32, _: i32, ){ unreachable!() }
|
||||
wit_import(ptr0, len0, ptr1);
|
||||
let l2 = *((ptr1 + 0) as *const i32);
|
||||
let l3 = *((ptr1 + 4) as *const i32);
|
||||
let len4 = l3 as usize;
|
||||
Vec::from_raw_parts(l2 as *mut _, len4, len4)
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(target_arch = "wasm32")]
|
||||
#[link_section = "component-type:example"]
|
||||
#[doc(hidden)]
|
||||
pub static __WIT_BINDGEN_COMPONENT_TYPE: [u8; 201] = [0, 97, 115, 109, 13, 0, 1, 0, 0, 25, 22, 119, 105, 116, 45, 99, 111, 109, 112, 111, 110, 101, 110, 116, 45, 101, 110, 99, 111, 100, 105, 110, 103, 4, 0, 7, 77, 1, 65, 2, 1, 65, 4, 1, 64, 0, 1, 0, 3, 0, 9, 104, 111, 115, 116, 45, 116, 101, 115, 116, 1, 0, 1, 64, 0, 0, 115, 4, 0, 11, 104, 101, 108, 108, 111, 45, 119, 111, 114, 108, 100, 1, 1, 4, 1, 26, 99, 111, 109, 112, 111, 110, 101, 110, 116, 58, 119, 105, 116, 103, 117, 101, 115, 116, 47, 101, 120, 97, 109, 112, 108, 101, 4, 0, 11, 13, 1, 0, 7, 101, 120, 97, 109, 112, 108, 101, 3, 0, 0, 0, 70, 9, 112, 114, 111, 100, 117, 99, 101, 114, 115, 1, 12, 112, 114, 111, 99, 101, 115, 115, 101, 100, 45, 98, 121, 2, 13, 119, 105, 116, 45, 99, 111, 109, 112, 111, 110, 101, 110, 116, 6, 48, 46, 50, 49, 46, 48, 16, 119, 105, 116, 45, 98, 105, 110, 100, 103, 101, 110, 45, 114, 117, 115, 116, 6, 48, 46, 49, 56, 46, 48];
|
||||
pub static __WIT_BINDGEN_COMPONENT_TYPE: [u8; 514] = [0, 97, 115, 109, 13, 0, 1, 0, 0, 25, 22, 119, 105, 116, 45, 99, 111, 109, 112, 111, 110, 101, 110, 116, 45, 101, 110, 99, 111, 100, 105, 110, 103, 4, 0, 7, 133, 3, 1, 65, 2, 1, 65, 9, 1, 66, 2, 1, 114, 3, 1, 120, 118, 1, 121, 118, 1, 122, 118, 4, 0, 4, 118, 101, 99, 51, 3, 0, 0, 3, 1, 23, 99, 111, 109, 112, 111, 110, 101, 110, 116, 58, 119, 105, 116, 103, 117, 101, 115, 116, 47, 109, 97, 116, 104, 5, 0, 1, 66, 15, 1, 114, 1, 2, 105, 100, 119, 4, 0, 9, 101, 110, 116, 105, 116, 121, 45, 105, 100, 3, 0, 0, 1, 114, 2, 2, 105, 100, 1, 10, 103, 101, 110, 101, 114, 97, 116, 105, 111, 110, 119, 4, 0, 6, 101, 110, 116, 105, 116, 121, 3, 0, 2, 1, 111, 2, 119, 119, 1, 114, 1, 5, 105, 110, 110, 101, 114, 4, 4, 0, 12, 119, 97, 115, 109, 45, 116, 121, 112, 101, 45, 105, 100, 3, 0, 5, 1, 114, 3, 4, 115, 105, 122, 101, 119, 9, 97, 108, 105, 103, 110, 109, 101, 110, 116, 119, 7, 116, 121, 112, 101, 45, 105, 100, 6, 4, 0, 14, 99, 111, 109, 112, 111, 110, 101, 110, 116, 45, 105, 110, 102, 111, 3, 0, 7, 1, 112, 125, 1, 112, 8, 1, 64, 2, 10, 99, 111, 109, 112, 111, 110, 101, 110, 116, 115, 9, 15, 99, 111, 109, 112, 111, 110, 101, 110, 116, 45, 105, 110, 102, 111, 115, 10, 0, 3, 4, 0, 5, 115, 112, 97, 119, 110, 1, 11, 1, 64, 1, 15, 99, 111, 109, 112, 111, 110, 101, 110, 116, 45, 105, 110, 102, 111, 115, 10, 0, 9, 4, 0, 4, 118, 105, 101, 119, 1, 12, 3, 1, 28, 99, 111, 109, 112, 111, 110, 101, 110, 116, 58, 119, 105, 116, 103, 117, 101, 115, 116, 47, 101, 99, 115, 45, 119, 111, 114, 108, 100, 5, 1, 1, 64, 1, 3, 109, 115, 103, 115, 1, 0, 3, 0, 10, 104, 111, 115, 116, 45, 112, 114, 105, 110, 116, 1, 2, 1, 106, 1, 125, 0, 1, 64, 0, 0, 3, 4, 0, 7, 111, 110, 45, 105, 110, 105, 116, 1, 4, 4, 1, 26, 99, 111, 109, 112, 111, 110, 101, 110, 116, 58, 119, 105, 116, 103, 117, 101, 115, 116, 47, 101, 120, 97, 109, 112, 108, 101, 4, 0, 11, 13, 1, 0, 7, 101, 120, 97, 109, 112, 108, 101, 3, 0, 0, 0, 70, 9, 112, 114, 111, 100, 117, 99, 101, 114, 115, 1, 12, 112, 114, 111, 99, 101, 115, 115, 101, 100, 45, 98, 121, 2, 13, 119, 105, 116, 45, 99, 111, 109, 112, 111, 110, 101, 110, 116, 6, 48, 46, 50, 49, 46, 48, 16, 119, 105, 116, 45, 98, 105, 110, 100, 103, 101, 110, 45, 114, 117, 115, 116, 6, 48, 46, 49, 56, 46, 48];
|
||||
|
||||
#[inline(never)]
|
||||
#[doc(hidden)]
|
||||
|
|
|
@ -1,13 +1,63 @@
|
|||
#[allow(warnings)]
|
||||
mod bindings;
|
||||
|
||||
use bindings::Guest;
|
||||
use bindings::{component::witguest::ecs_world::{self, ComponentInfo, WasmTypeId}, Guest};
|
||||
|
||||
use std::{alloc::Layout, any::TypeId, mem};
|
||||
|
||||
impl WasmTypeId {
|
||||
pub fn of<T: 'static>() -> Self {
|
||||
Self {
|
||||
inner: unsafe { mem::transmute(TypeId::of::<T>()) }
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#[repr(C)]
|
||||
#[derive(Debug, Clone, Copy, PartialEq)]
|
||||
struct Vec3 {
|
||||
x: f32,
|
||||
y: f32,
|
||||
z: f32,
|
||||
}
|
||||
|
||||
impl Vec3 {
|
||||
pub fn new(x: f32, y: f32, z: f32) -> Self {
|
||||
Self {
|
||||
x, y, z
|
||||
}
|
||||
}
|
||||
|
||||
pub fn component_info() -> ComponentInfo {
|
||||
let layout = Layout::new::<Vec3>();
|
||||
ComponentInfo {
|
||||
size: layout.size() as u64,
|
||||
alignment: layout.align() as u64,
|
||||
type_id: WasmTypeId::of::<Vec3>(),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
struct Component;
|
||||
|
||||
impl Guest for Component {
|
||||
/// Say hello!
|
||||
fn hello_world() -> String {
|
||||
bindings::host_test();
|
||||
"Hello, World!".to_string()
|
||||
fn on_init() -> Result<u8, ()> {
|
||||
let comps = &mut [Vec3::new(7.0, 30.0, 18.0),];
|
||||
let info = &[Vec3::component_info()];
|
||||
|
||||
// no fucking clue if this will work, but lets try and it see
|
||||
let comps = comps.as_mut_ptr().cast::<u8>();
|
||||
let comps = unsafe { Vec::from_raw_parts(comps, mem::size_of::<Vec3>(), 1) };
|
||||
|
||||
let en = ecs_world::spawn(&comps, info);
|
||||
|
||||
bindings::host_print(&format!("Spawned entity: {}", en.id.id));
|
||||
|
||||
let mut buffer = ecs_world::view(&[Vec3::component_info()]);
|
||||
bindings::host_print(&format!("Retrieved vec3 of {} bytes long", buffer.len()));
|
||||
let fetched_vec = unsafe { std::ptr::read(buffer.as_mut_ptr().cast::<Vec3>()) };
|
||||
bindings::host_print(&format!("Retrieved vec3: {:?}", fetched_vec));
|
||||
|
||||
Ok(0)
|
||||
}
|
||||
}
|
|
@ -1,7 +1,45 @@
|
|||
package component:witguest;
|
||||
|
||||
interface math {
|
||||
record vec3 {
|
||||
x: f32,
|
||||
y: f32,
|
||||
z: f32,
|
||||
}
|
||||
}
|
||||
|
||||
interface ecs-world {
|
||||
//use math.{vec3};
|
||||
|
||||
record entity-id {
|
||||
id: u64,
|
||||
}
|
||||
|
||||
record entity {
|
||||
id: entity-id,
|
||||
generation: u64,
|
||||
}
|
||||
|
||||
record wasm-type-id {
|
||||
inner: tuple<u64, u64>,
|
||||
}
|
||||
|
||||
record component-info {
|
||||
size: u64,
|
||||
alignment: u64,
|
||||
type-id: wasm-type-id, // a u128
|
||||
}
|
||||
|
||||
// expects components to be tightly packed in the same order of component-infos
|
||||
spawn: func(components: list<u8>, component-infos: list<component-info>) -> entity;
|
||||
view: func(component-infos: list<component-info>) -> list<u8>;
|
||||
}
|
||||
|
||||
/// An example world for the component to target.
|
||||
world example {
|
||||
import host-test: func();
|
||||
export hello-world: func() -> string;
|
||||
import math;
|
||||
import ecs-world;
|
||||
|
||||
import host-print: func(msg: string);
|
||||
export on-init: func() -> result<u8>;
|
||||
}
|
||||
|
|
Loading…
Reference in New Issue