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lyra-wasm-scripting-test
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Expand LyraApi package to make it easier to spawn and view entities

This commit is contained in:
SeanOMik 2024-11-08 21:05:02 -05:00
parent fcf4f54e34
commit dcb48e9acf
Signed by: SeanOMik
GPG Key ID: FEC9E2FC15235964
19 changed files with 243 additions and 308 deletions
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2
csharp-guests.sln
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@ -3,8 +3,6 @@ Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio Version 17
VisualStudioVersion = 17.0.31903.59
MinimumVisualStudioVersion = 10.0.40219.1
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "LyraApi", "guests/csharp/LyraApi/LyraApi.csproj", "{A4003DF0-C8FF-4A50-A66C-9777E900ED21}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "dotnet-guest-test", "guests/csharp/dotnet-guest-test\dotnet-guest-test.csproj", "{68F96E6F-472F-409E-B36E-9C5E7206CCDE}"
EndProject
Global

2
guests/csharp/LyraApi/.gitignore vendored
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@ -1,2 +0,0 @@
bin
obj

15
guests/csharp/LyraApi/Ecs/IComponent.cs
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@ -1,15 +0,0 @@
using ImportsWorld.wit.imports.lyra.api;
namespace LyraApi.Ecs;
public interface IComponent {
public static string HostName { get; }
public static ulong HostSize { get; }
public static ulong HostAlignment { get; }
public static ulong TypeId { get; }
public IEcs.ComponentInfo GetComponentInfo() {
var typeId = new IEcs.WasmTypeId((TypeId, 0));
return new IEcs.ComponentInfo(HostName, HostSize, HostAlignment, typeId);
}
}

14
guests/csharp/LyraApi/Ecs/World.cs
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@ -1,14 +0,0 @@
namespace LyraApi.Ecs;
using ImportsWorld.wit.imports.lyra.api;
using LyraApi;
public class World(IEcs.EcsWorld world) {
private IEcs.EcsWorld Inner { get; set; } = world;
public Entity Spawn(params IComponent[] comps) {
List<IEcs.ComponentInfo> infos = comps.Select(c => c.GetComponentInfo()).ToList();
byte[] bytes = comps.SelectMany(c => Marshalling.GetBytes(c)).ToArray();
return new Entity(Inner.Spawn(bytes, infos));
}
}

31
guests/csharp/LyraApi/LyraApi.csproj
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@ -1,31 +0,0 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>net9.0</TargetFramework>
<RootNamespace>LyraApi</RootNamespace>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
<RuntimeIdentifier>wasi-wasm</RuntimeIdentifier>
<UseAppHost>false</UseAppHost>
<PublishTrimmed>true</PublishTrimmed>
<InvariantGlobalization>true</InvariantGlobalization>
<SelfContained>true</SelfContained>
<IlcExportUnmanagedEntrypoints>true</IlcExportUnmanagedEntrypoints>
<OutputType>Library</OutputType>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="BytecodeAlliance.Componentize.DotNet.Wasm.SDK" Version="0.4.0-preview00007" />
</ItemGroup>
<ItemGroup>
<Wit Remove="**\*.wit" />
<Wit Include="wit" World="imports" />
</ItemGroup>
<ItemGroup>
<PackageReference Include="runtime.linux-x64.Microsoft.DotNet.ILCompiler.LLVM" Version="10.0.0-alpha.1.24531.4" />
</ItemGroup>
</Project>

9
guests/csharp/LyraApi/nuget.config
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@ -1,9 +0,0 @@
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<packageSources>
<!--To inherit the global NuGet package sources remove the <clear/> line below -->
<clear />
<add key="dotnet-experimental" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-experimental/nuget/v3/index.json" />
<add key="nuget" value="https://api.nuget.org/v3/index.json" />
</packageSources>
</configuration>

81
guests/csharp/LyraApi/wit/ecs.wit
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@ -1,81 +0,0 @@
package lyra:api;
interface ecs {
record entity-id {
id: u64,
}
record entity {
id: entity-id,
generation: u64,
}
record wasm-type-id {
// represents a u128, can be converted into that with mem::transmute
inner: tuple<u64, u64>,
}
record component-info {
host-name: option<string>,
/// The size of the component in memory.
size: u64,
/// The alignment of the component in memory.
alignment: u64,
/// The type id of the component.
///
/// This must be unique between component types since its used to identify the components
/// in spawning and querying.
type-id: wasm-type-id,
}
resource ecs-dynamic-view {
constructor(wrld: borrow<ecs-world>, component-infos: list<component-info>);
/// Get the bytes of the next row in the view.
///
/// A row contains multiple component serialized as bytes. The buffer is tighly packed.
next: func() -> option<tuple<entity, list<u8>>>;
}
resource ecs-world {
constructor();
/// Spawn an entity.
///
/// Parameters:
/// * `components`: A tightly packed byte buffer containing the components to spawn
/// with the entity. This expects the components in the same order of `component-infos`.
/// * `component-infos`: A list of `component-infos` uses to identify the components
/// and specify the layouts of them.
spawn: func(components: list<u8>, component-infos: list<component-info>) -> entity;
/// Insert components into an existing entity.
///
/// Parameters:
/// * `en`: The entity to insert into.
/// * `components`: A tightly packed byte buffer containing the components to spawn
/// with the entity. This expects the components in the same order of `component-infos`.
/// * `component-infos`: A list of `component-infos` uses to identify the components
/// and specify the layouts of them.
insert: func(en: entity, components: list<u8>, component-infos: list<component-info>);
/// Query for a list of entities and their components.
///
/// Parameters:
/// * `component-infos`: The `component-info`'s of the components that you are querying.
///
/// Returns: an iterator that returns the byte buffers of each row.
view: func(component-infos: list<component-info>) -> ecs-dynamic-view;
/// Query for components from a single entity.
///
/// Parameters:
/// * `en`: The entity to query components from.
/// * `component-infos`: The `component-info`'s of the components that you are querying.
///
/// Returns: A row of components serialized as bytes. The buffer is tighly packed.
view-one: func(en: entity, component-infos: list<component-info>) -> option<list<u8>>;
//with_system: func(stage: string, component-infos: list<component-info>, system: func(components: list<u8>));
}
}

5
guests/csharp/LyraApi/wit/world.wit
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@ -1,5 +0,0 @@
package lyra:api;
world imports {
import ecs;
}

88
guests/csharp/dotnet-guest-test/ExampleWorldImpl.cs
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@ -1,11 +1,11 @@
namespace ExampleWorld;
using System.Diagnostics.CodeAnalysis;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
//using ExampleWorld.wit.imports.lyra.api;
using ExampleWorld.wit.imports.lyra.api;
using LyraApi;
using LyraApi.Ecs;
using ImportsWorld.wit.imports.lyra.api;
[StructLayout(LayoutKind.Sequential)]
struct Vec3(float x, float y, float z) : IComponent
@ -23,81 +23,29 @@ struct Vec3(float x, float y, float z) : IComponent
/// </summary>
public float Z { get; set; } = z;
public static string HostName { get => "Vec3"; }
public static ulong HostSize { get => (ulong)Marshal.SizeOf<Vec3>(); }
public static ulong HostAlignment { get => (ulong)Marshalling.AlignmentOf<Vec3>(); }
public static ulong TypeId { get => 4124409524; }
public static string HostName => "Vec3";
public static ulong HostSize => (ulong)Marshal.SizeOf<Vec3>();
public static ulong HostAlignment => (ulong)MarshalUtils.AlignmentOf<Vec3>();
public static ulong TypeId => 4124409524;
public static object? TakeFromBytes(byte[] bytes)
{
byte[] taken = bytes.Take((int)HostSize).ToArray();
return MarshalUtils.FromBytes<Vec3>(taken);
}
}
public class ExampleWorldImpl : IExampleWorld
{
internal struct AlignmentHelper<T> where T : unmanaged
{
public byte Padding;
public T Target;
}
private static int AlignmentOf<T>() where T : unmanaged
{
return (int)Marshal.OffsetOf<AlignmentHelper<T>>(nameof(AlignmentHelper<T>.Target));
}
private static byte[] GetBytes<T>([DisallowNull] T data) {
int size = Marshal.SizeOf(data);
byte[] arr = new byte[size];
IntPtr ptr = IntPtr.Zero;
try
{
ptr = Marshal.AllocHGlobal(size);
Marshal.StructureToPtr(data, ptr, true);
Marshal.Copy(ptr, arr, 0, size);
}
finally
{
Marshal.FreeHGlobal(ptr);
}
return arr;
}
private static T? FromBytes<T>(byte[] data) where T : struct
{
var ptr = GCHandle.Alloc(data, GCHandleType.Pinned);
try {
var res = (T?) Marshal.PtrToStructure(ptr.AddrOfPinnedObject(), typeof(T));
return res;
} finally {
ptr.Free();
}
}
public static void OnInit(IEcs.EcsWorld gameWorld, IEcs.Entity owningEntity)
{
var pos = new Vec3(7.0f, 30.0f, 18.0f);
var size = new IEcs.WasmTypeId((Vec3.TypeId, 0));
var info = new IEcs.ComponentInfo("Vec3", (ulong) Marshal.SizeOf<Vec3>(), (ulong) AlignmentOf<Vec3>(), size);
var infos = new List<IEcs.ComponentInfo>
{
info
};
{
var world = new World(gameWorld);
Entity entity = world.Spawn(pos);
Console.WriteLine("C#: Spawned {0}", entity.Id);
Entity entity = world.Spawn(new Vec3(7.0f, 30.0f, 18.0f));
Console.WriteLine("C#: Spawned entity with id {0}", entity.Id);
IEcs.EcsDynamicView res = gameWorld.View(infos);
(IEcs.Entity, byte[])? row = res.Next();
if (row.HasValue) {
Console.WriteLine("C#: Found position!!!");
var en = row.Value.Item1;
var comp = FromBytes<Vec3>(row.Value.Item2);
Console.WriteLine("C#: Found component at ({0}, {1}, {2})", comp?.X, comp?.Y, comp?.Z);
} else {
Console.WriteLine("C#: Could not find position");
foreach ((Entity en, Vec3 comp) in world.View<Vec3>())
{
Console.WriteLine("C#: Found entity at ({0}, {1}, {2})", comp.X, comp.Y, comp.Z);
}
}

21
guests/csharp/dotnet-guest-test/LyraApi/Ecs/Component.cs Normal file
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@ -0,0 +1,21 @@
using System.Reflection;
using ExampleWorld.wit.imports.lyra.api;
using LyraApi.Ecs;
public class Component(string hostName, ulong hostSize, ulong hostAlignment, ulong typeId)
{
public string HostName { get; } = hostName;
public ulong HostSize { get; } = hostSize;
public ulong HostAlignment { get; } = hostAlignment;
public ulong TypeId { get; } = typeId;
public static Component FromComponent<T>() where T : IComponent
{
return new Component(T.HostName, T.HostSize, T.HostAlignment, T.TypeId);
}
public ComponentInfo GetComponentInfo()
{
return new ComponentInfo(HostName, HostSize, HostAlignment, TypeId);
}
}

31
guests/csharp/dotnet-guest-test/LyraApi/Ecs/ComponentInfo.cs Normal file
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@ -0,0 +1,31 @@
using ExampleWorld.wit.imports.lyra.api;
namespace LyraApi.Ecs;
public readonly struct ComponentInfo
{
internal readonly IEcs.ComponentInfo info;
public readonly string? HostName => info.hostName;
public readonly ulong Size => info.size;
public readonly ulong Alignment => info.alignment;
public readonly ulong TypeId => info.typeId.inner.Item1;
public ComponentInfo(IEcs.ComponentInfo info)
{
this.info = info;
}
public ComponentInfo(string hostName, ulong size, ulong alignment, ulong typeId)
{
var wasmTypeId = new IEcs.WasmTypeId((typeId, 0));
this.info = new IEcs.ComponentInfo(hostName, size, alignment, wasmTypeId);
}
public static ComponentInfo FromType<T>() where T : IComponent
{
var typeId = new IEcs.WasmTypeId((T.TypeId, 0));
var info = new IEcs.ComponentInfo(T.HostName, T.HostSize, T.HostAlignment, typeId);
return new ComponentInfo(info);
}
}

7
guests/csharp/LyraApi/Ecs/Entity.cs → guests/csharp/dotnet-guest-test/LyraApi/Ecs/Entity.cs
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@ -1,10 +1,11 @@
namespace LyraApi.Ecs;
using ImportsWorld.wit.imports.lyra.api;
using ExampleWorld.wit.imports.lyra.api;
public class Entity(IEcs.Entity entity) {
public class Entity(IEcs.Entity entity)
{
internal IEcs.Entity Inner { get; set; } = entity;
public ulong Id { get => Inner.id.id; }
public ulong Generation { get => Inner.generation; }
}

14
guests/csharp/dotnet-guest-test/LyraApi/Ecs/IComponent.cs Normal file
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@ -0,0 +1,14 @@
using System.Data.SqlTypes;
using ExampleWorld.wit.imports.lyra.api;
namespace LyraApi.Ecs;
public interface IComponent
{
public abstract static string HostName { get; }
public abstract static ulong HostSize { get; }
public abstract static ulong HostAlignment { get; }
public abstract static ulong TypeId { get; }
public abstract static object? TakeFromBytes(byte[] bytes);
}

20
guests/csharp/dotnet-guest-test/LyraApi/Ecs/View.cs Normal file
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@ -0,0 +1,20 @@
using System.ComponentModel;
using ExampleWorld;
namespace LyraApi.Ecs;
public class View
{
internal List<ComponentInfo> infos;
private View(List<ComponentInfo> infos)
{
this.infos = infos;
}
public static View Create<T1>() where T1 : IComponent
{
List<ComponentInfo> infos = [ComponentInfo.FromType<T1>()];
return new View(infos);
}
}

32
guests/csharp/dotnet-guest-test/LyraApi/Ecs/ViewResult.cs Normal file
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@ -0,0 +1,32 @@
using System.Runtime.InteropServices.Swift;
using ExampleWorld.wit.imports.lyra.api;
namespace LyraApi.Ecs;
public class ViewResult
{
private List<Component> components;
private IEcs.EcsDynamicView inner;
internal ViewResult(List<Component> components, IEcs.EcsDynamicView inner)
{
this.components = components;
this.inner = inner;
}
public IEnumerable<(Entity, T1)> Get<T1>() where T1 : IComponent
{
(IEcs.Entity, byte[])? row = inner.Next();
if (row is (var entity, byte[] bytes))
{
byte[] compBytes = bytes.Take((int)T1.HostSize).ToArray();
var t1 = (T1?)T1.TakeFromBytes(compBytes);
if (t1 != null)
{
yield return (new Entity(entity), t1);
}
}
}
}

30
guests/csharp/dotnet-guest-test/LyraApi/Ecs/World.cs Normal file
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@ -0,0 +1,30 @@
namespace LyraApi.Ecs;
using ExampleWorld.wit.imports.lyra.api;
using LyraApi;
public class World(IEcs.EcsWorld world)
{
private IEcs.EcsWorld Inner { get; set; } = world;
private Entity Spawn(List<IEcs.ComponentInfo> infos, params object[] comps)
{
byte[] bytes = comps.SelectMany(c => MarshalUtils.GetBytes(c)).ToArray();
return new Entity(Inner.Spawn(bytes, infos));
}
public Entity Spawn<T1>(T1 c1) where T1 : IComponent
{
List<IEcs.ComponentInfo> infos = [ComponentInfo.FromType<T1>().info];
return Spawn(infos, c1);
}
public IEnumerable<(Entity, T1)> View<T1>() where T1 : IComponent
{
List<Component> comps = [Component.FromComponent<T1>()];
List<IEcs.ComponentInfo> infos = comps.Select(c => c.GetComponentInfo().info).ToList();
IEcs.EcsDynamicView dynamicView = Inner.View(infos);
return new ViewResult(comps, dynamicView).Get<T1>();
}
}

20
guests/csharp/LyraApi/Marshalling.cs → guests/csharp/dotnet-guest-test/LyraApi/MarshalUtils.cs
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@ -3,11 +3,14 @@ namespace LyraApi;
using System.Diagnostics.CodeAnalysis;
using System.Runtime.InteropServices;
public static class Marshalling {
public static class MarshalUtils
{
internal struct AlignmentHelper<T> where T : unmanaged
{
#pragma warning disable CS0649 // Field is never assigned to, and will always have its default value 0
public byte Padding;
public T Target;
#pragma warning restore CS0649 // Field is never assigned to, and will always have its default value 0
}
public static int AlignmentOf<T>() where T : unmanaged
@ -15,7 +18,8 @@ public static class Marshalling {
return (int)Marshal.OffsetOf<AlignmentHelper<T>>(nameof(AlignmentHelper<T>.Target));
}
public static byte[] GetBytes<T>([DisallowNull] T data) {
public static byte[] GetBytes<T>([DisallowNull] T data)
{
int size = Marshal.SizeOf(data);
byte[] arr = new byte[size];
@ -33,13 +37,17 @@ public static class Marshalling {
return arr;
}
public static T? FromBytes<T>(byte[] data) where T : struct
public static T? FromBytes<[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors | DynamicallyAccessedMemberTypes.NonPublicConstructors)] T>(byte[] data)
{
var ptr = GCHandle.Alloc(data, GCHandleType.Pinned);
try {
var res = (T?) Marshal.PtrToStructure(ptr.AddrOfPinnedObject(), typeof(T));
try
{
//var res = (T?)Marshal.PtrToStructure(ptr.AddrOfPinnedObject(), typeof(T));
var res = Marshal.PtrToStructure<T>(ptr.AddrOfPinnedObject());
return res;
} finally {
}
finally
{
ptr.Free();
}

31
guests/csharp/dotnet-guest-test/dotnet-guest-test.csproj
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@ -12,48 +12,47 @@
<InvariantGlobalization>true</InvariantGlobalization>
<SelfContained>true</SelfContained>
<IlcExportUnmanagedEntrypoints>true</IlcExportUnmanagedEntrypoints>
<!-- Ignore warning of multiple `PackageReference` items for the `ILCompiler.LLVM` package. -->
<NoWarn>$(NoWarn);NU1504</NoWarn>
</PropertyGroup>
<!-- Copy WIT files from LyraApi to lyra-api wit folder. -->
<Target Name="CopyFolderOnBuild" BeforeTargets="WitCompile_InvokeTool">
<!-- <Target Name="CopyFolderOnBuild" BeforeTargets="WitCompile_InvokeTool">
<ItemGroup>
<MyFiles Include="..\LyraApi\wit\**\*.wit" />
</ItemGroup>
<Copy SourceFiles="@(MyFiles)" DestinationFolder="wit\deps\lyraapi\%(RecursiveDir)" />
</Target>
</Target> -->
<!-- Remove bindgen of LyraApi WIT .-->
<Target Name="RemoveBindgenLyraApi" AfterTargets="WitCompile_InvokeTool">
<!-- <Target Name="RemoveBindgenLyraApi" AfterTargets="WitCompile_InvokeTool">
<ItemGroup>
<FilesToDelete Include="obj\Debug\net*\wasi-wasm\wit_bindgen\*.lyra.api.*.cs"/>
</ItemGroup>
<Delete Files="@(FilesToDelete)" />
</Target>
</Target> -->
<!-- Reuse bindgen from LyraApi package instead of using local bindgen. -->
<Target Name="UpdateLyraApiReferences" AfterTargets="WitCompile_InvokeTool; RemoveBindgenLyraApi">
<!-- <Target Name="UpdateLyraApiReferences" AfterTargets="WitCompile_InvokeTool; RemoveBindgenLyraApi">
<Exec Condition="'$(OS)' == 'Unix'" Command="find obj/Debug -type f -wholename '*wit_bindgen/*.cs' -exec sed -i 's/ExampleWorld\.wit\.imports\.lyra\.api/ImportsWorld.wit.imports.lyra.api/g' {} \;" />
<Exec Condition="'$(OS)' == 'Windows_NT'" Command="powershell -Command &quot;Get-ChildItem -Path 'obj\Debug' -Recurse -Filter '*.cs' ^
| Where-Object { $_.FullName -match 'wit_bindgen' } ^
| ForEach-Object { (Get-Content -Path $_.FullName) -replace 'ExampleWorld\.wit\.imports\.lyra\.api', 'ImportsWorld.wit.imports.lyra.api' ^
| Set-Content -Path $_.FullName }&quot;" />
</Target>
</Target> -->
<ItemGroup>
<PackageReference Include="BytecodeAlliance.Componentize.DotNet.Wasm.SDK" Version="0.4.0-preview00007" />
</ItemGroup>
<ItemGroup>
<Wit Remove="**\*.wit" />
<!-- <Wit Include="wit/deps/lyraapi" World="imports" /> -->
<Wit Include="wit" World="example" />
</ItemGroup>
<ItemGroup>
<PackageReference Include="runtime.linux-x64.Microsoft.DotNet.ILCompiler.LLVM" Version="10.0.0-alpha.1.24531.4" />
</ItemGroup>
<ItemGroup>
<ProjectReference Include="..\LyraApi\LyraApi.csproj" />
<Wit Remove="**\*.wit" />
<Wit Include="wit" World="example" />
</ItemGroup>
<!-- <ItemGroup>
<ProjectReference Include="..\LyraApi\LyraApi.csproj" />
</ItemGroup> -->
</Project>

98
src/main.rs
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@ -137,22 +137,8 @@ impl wasm_ecs::HostEcsWorld for Imports {
let mut bundle = ecs::DynamicBundle::new();
let mut offset = 0;
for info in infos {
// get the full u128 from the u64 2-tuple
let full_id = unsafe { std::mem::transmute::<_, u128>(info.type_id.inner) };
// Try to get the Native type's ComponentInfo. If something is found, verify that
// the size and alignment match.
let info = match lookup.0.get(&full_id) {
Some(native) => {
let native_align = native.layout().align() as u64;
let native_size = native.layout().size() as u64;
assert_eq!(native_align, info.alignment, "Native type alignment is different then scripting type alignment!");
assert_eq!(native_size, info.size, "Native type size is different then scripting type size!");
native.clone()
},
None => info.into()
};
// Try to get the Native type's ComponentInfo.
let info = lookup.lookup_info(info.into());
// SAFETY: The components are tightly packed. Adding the offset to the pointer will
// get the next component in the buffer.
@ -283,11 +269,25 @@ impl wasm_ecs::HostEcsDynamicView for Imports {
world: WasmResource<wasm_ecs::EcsWorld>,
infos: Vec<wasm_ecs::ComponentInfo>,
) -> wasmtime::component::Resource<wasm_ecs::EcsDynamicView> {
// Create a dynamic view for querying for the components
let mut view = DynamicViewState::new();
for info in infos.clone() {
view.push(QueryDynamicType::from_info(info.into()));
}
// Create the view state
let view = {
let world_entry = self
.world_slab
.get_mut(world.rep() as _)
.ok_or(WasmError::InvalidResourceHandle("EcsWorld"))
.unwrap();
let lookup = world_entry.world.get_resource::<GuestTypeLookup>().unwrap();
// Create a dynamic view for querying for the components
let mut view = DynamicViewState::new();
for info in infos.clone() {
let info = lookup.lookup_info(info.into());
view.push(QueryDynamicType::from_info(info));
}
view
};
let world_rep = world.rep();
let entry = DynamicViewEntry {
@ -362,42 +362,32 @@ impl wasm_ecs::HostEcsDynamicView for Imports {
}
}
/* fn dynamic_view_next_impl() -> Option<(Entity, Vec<u8>)> {
// get the next row in the view and copy the returned components into a tightly packed
if let Some((en, row)) = view.next(&world_entry.world) {
let row_len = row.iter().map(|d| d.info.layout().size()).sum();
let mut row_buf = Vec::<u8>::with_capacity(row_len);
let mut offset = 0;
for comp in row {
let comp_size = comp.info.layout().size();
unsafe {
// SAFETY: the vec has the capacity to store this component because it was
// created with Vec::with_capacity.
let dst = row_buf.as_mut_ptr().add(offset);
std::ptr::copy_nonoverlapping(
comp.ptr.as_ptr(),
dst,
comp.info.layout().size(),
);
// make sure to tell the vec that it now has the bytes of this component
row_buf.set_len(row_buf.len() + comp_size);
}
offset += comp_size;
}
Some((en.into(), row_buf))
} else {
None
}
} */
#[derive(Default, Clone)]
struct GuestTypeLookup(HashMap<u128, lyra_ecs::ComponentInfo>);
impl GuestTypeLookup {
/// Try to find the native type's component info.
///
/// If the wasm type id does not correspond to a native type's info, the provided `ComponentInfo`
/// will be returned. If info is found, the size and alignment will be verified to match using
/// asserts and the info of the native type will be returned.
fn lookup_info(&self, info: lyra_ecs::ComponentInfo) -> lyra_ecs::ComponentInfo {
match self.0.get(&info.type_id().as_unknown().unwrap()) {
Some(native) => {
let native_align = native.layout().align() as usize;
let native_size = native.layout().size() as usize;
let layout = info.layout();
assert_eq!(native_align, layout.align(), "Native type alignment is different then scripting type alignment!");
assert_eq!(native_size, layout.size(), "Native type size is different then scripting type size!");
native.clone()
},
None => info
}
}
}
#[async_trait]
impl wasm_ecs::Host for Imports {}