Expose asset manager, can load images now

csharp-guests.sln

@@ -3,7 +3,7 @@ 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}") = "dotnet-guest-test", "guests/csharp/dotnet-guest-test\dotnet-guest-test.csproj", "{68F96E6F-472F-409E-B36E-9C5E7206CCDE}"
+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
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution

guests/csharp/dotnet-guest-test/ExampleWorldImpl.cs

@@ -1,7 +1,7 @@
 namespace ExampleWorld;
 
 using ExampleWorld.wit.imports.lyra.api;
-
+using LyraApi.Asset;
 using LyraApi.Ecs;
 using LyraApi.Engine;
 using LyraApi.Math;
@@ -19,9 +19,31 @@ public class ExampleWorldImpl : IExampleWorld
             Console.WriteLine("C#:   Found entity at ({0}, {1}, {2})", comp.X, comp.Y, comp.Z);
         }
 
-        DeltaTime? dt = world.GetResource<DeltaTime>();
+        /* DeltaTime? dt = world.GetResource<DeltaTime>();
         if (dt != null) {
             Console.WriteLine($"C#:   Delta time: {dt?.Seconds:0.##}");
+        } */
+
+        AssetManager? man = world.GetAssetManager();
+        if (man != null)
+        {
+            Handle<ImageHandle> han = man.Request<ImageHandle>("test_assets/white.png");
+            Console.WriteLine($"C#:   Asset uuid: {han.Uuid}");
+
+            // wait for asset to load before trying to get the data
+            han.WaitForLoadRecursive();
+            if (!han.IsLoaded)
+            {
+                Console.WriteLine("C#:   Asset is still not loaded, even after waiting!");
+            }
+
+            // will be null if the image hasn't loaded yet
+            ImageHandle? img = han.GetData();
+            Console.WriteLine($"C#:   Size of image: ({img?.Width}, {img?.Height})");
+        }
+        else
+        {
+            Console.WriteLine("C#:   No manager found");
         }
     }
 

guests/csharp/dotnet-guest-test/LyraApi/Asset/AssetManager.cs

@@ -0,0 +1,39 @@
+using LyraApi.Ecs;
+using ExampleWorld.wit.imports.lyra.api;
+
+namespace LyraApi.Asset;
+
+public class AssetManager(IAsset.AssetManager assetManager) : IResource
+{
+    internal IAsset.AssetManager inner = assetManager;
+
+    public static ulong TypeId => 567234789345;
+
+    public static object? FromWasmResult(IEcs.WorldResourceResult result)
+    {
+        switch (result.Tag)
+        {
+            case IEcs.WorldResourceResult.NONE:
+                return null;
+            case IEcs.WorldResourceResult.WASM_RESOURCE_REP:
+                Console.WriteLine($"Got the resource rep: {result.AsWasmResourceRep}");
+                var handle = new IAsset.AssetManager.THandle((int)result.AsWasmResourceRep);
+                var inner = new IAsset.AssetManager(handle);
+                return new AssetManager(inner);
+            case IEcs.WorldResourceResult.BYTES:
+                return null;
+            default:
+                return null;
+        }
+    }
+
+    public UntypedHandle Request(string path)
+    {
+        return new UntypedHandle(inner.Request(path));
+    }
+
+    public Handle<T> Request<T>(string path) where T : IAssetHandle
+    {
+        return Request(path).AsHandle<T>();
+    }
+}

guests/csharp/dotnet-guest-test/LyraApi/Asset/Handle.cs

@@ -0,0 +1,34 @@
+namespace LyraApi.Asset;
+
+public class Handle<T>(UntypedHandle handle) where T : IAssetHandle
+{
+    internal UntypedHandle inner = handle;
+
+    public bool Watched { get => inner.Watched; set => inner.Watched = value; }
+    public ulong Version { get => inner.Version; }
+    public Guid Uuid { get => inner.Uuid; }
+    public string Path { get => inner.Path; }
+    public bool IsLoaded { get => inner.IsLoaded; }
+
+    public void WaitForLoad()
+    {
+        inner.WaitForLoad();
+    }
+
+    public void WaitForLoadRecursive()
+    {
+        inner.WaitForLoadRecursive();
+    }
+
+    public T? GetData()
+    {
+        if (IsLoaded)
+        {
+            return (T?)T.FromRawHandle(inner);
+        }
+        else
+        {
+            return default;
+        }
+    }
+}

guests/csharp/dotnet-guest-test/LyraApi/Asset/IAssetHandle.cs

@@ -0,0 +1,6 @@
+namespace LyraApi.Asset;
+
+public interface IAssetHandle
+{
+    public abstract static object? FromRawHandle(UntypedHandle untypedHandle);
+}

guests/csharp/dotnet-guest-test/LyraApi/Asset/ImageHandle.cs

@@ -0,0 +1,28 @@
+using ExampleWorld.wit.imports.lyra.api;
+
+namespace LyraApi.Asset;
+
+public class ImageHandle(IAsset.ImageHandle handle) : IAssetHandle
+{
+    internal IAsset.ImageHandle inner = handle;
+
+    public uint? Height => inner.Height();
+    public uint? Width => inner.Width();
+
+    public static object? FromRawHandle(UntypedHandle untypedHandle)
+    {
+        var handle = IAsset.ImageHandle.FromRawHandle(untypedHandle.inner);
+        return handle != null ? new ImageHandle(handle) : null;
+    }
+
+    /// <summary>
+    /// Get the image's pixels as native endian bytes.
+    /// </summary>
+    /// 
+    /// Keep in mind that this does copy the image's pixels from the host.
+    /// This is pretty slow.
+    public byte[]? GetImageBytes()
+    {
+        return inner.GetBytes();
+    }
+}

guests/csharp/dotnet-guest-test/LyraApi/Asset/UntypedHandle.cs

@@ -0,0 +1,29 @@
+using ExampleWorld.wit.imports.lyra.api;
+
+namespace LyraApi.Asset;
+
+public class UntypedHandle(IAsset.AssetHandle handle)
+{
+    internal IAsset.AssetHandle inner = handle;
+
+    public bool Watched { get => inner.IsWatched(); set => inner.SetWatched(value); }
+    public ulong Version { get => inner.Version(); }
+    public Guid Uuid { get => Guid.Parse(inner.Uuid()); }
+    public string Path { get => inner.Path(); }
+    public bool IsLoaded { get => inner.IsLoaded(); }
+
+    public void WaitForLoad()
+    {
+        inner.WaitForLoad();
+    }
+
+    public void WaitForLoadRecursive()
+    {
+        inner.WaitRecurseDependenciesLoad();
+    }
+
+    public Handle<T> AsHandle<T>() where T : IAssetHandle
+    {
+        return new Handle<T>(this);
+    }
+}

guests/csharp/dotnet-guest-test/LyraApi/Ecs/World.cs

@@ -2,15 +2,16 @@ namespace LyraApi.Ecs;
 
 using ExampleWorld.wit.imports.lyra.api;
 using LyraApi;
+using LyraApi.Asset;
 
 public class World(IEcs.EcsWorld world)
 {
-    private IEcs.EcsWorld Inner { get; set; } = world;
+    internal IEcs.EcsWorld inner = 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));
+        return new Entity(inner.Spawn(bytes, infos));
     }
 
     public Entity Spawn<T1>(T1 c1) where T1 : IComponent
@@ -24,13 +25,27 @@ public class World(IEcs.EcsWorld world)
         List<Component> comps = [Component.FromComponent<T1>()];
         List<IEcs.ComponentInfo> infos = comps.Select(c => c.GetComponentInfo().info).ToList();
 
-        IEcs.EcsDynamicView dynamicView = Inner.View(infos);
+        IEcs.EcsDynamicView dynamicView = inner.View(infos);
         return new ViewResult(comps, dynamicView).Get<T1>();
     }
 
     public T? GetResource<T>() where T : IResource
     {
-        IEcs.WorldResourceResult result = Inner.GetResource(Utils.ToWasmTypeId(T.TypeId));
-        return (T?) T.FromWasmResult(result);
+        IEcs.WorldResourceResult result = inner.GetResource(Utils.ToWasmTypeId(T.TypeId));
+        return (T?)T.FromWasmResult(result);
+    }
+
+    public AssetManager? GetAssetManager()
+    {
+        IAsset.AssetManager? assetManager = IAsset.AssetManager.FromWorld(inner);
+
+        if (assetManager != null)
+        {
+            return new AssetManager(assetManager);
+        }
+        else
+        {
+            return null;
+        }
     }
 }

guests/csharp/dotnet-guest-test/dotnet-guest-test.csproj

@@ -18,13 +18,17 @@
   </PropertyGroup>
 
   <!-- Copy WIT files from LyraApi to lyra-api wit folder. -->
-  <Target Name="CopyFolderOnBuild" BeforeTargets="WitCompile_InvokeTool">
+  <Target Name="CopyLyraApiWit" BeforeTargets="WitCompile_InvokeTool">
     <ItemGroup>
       <MyFiles Include="..\..\rust\common-api\wit\**\*.wit" />
     </ItemGroup>
     <Copy SourceFiles="@(MyFiles)" DestinationFolder="wit\deps\lyraapi\%(RecursiveDir)" />
   </Target>
 
+  <Target Name="CopyComponentGuestWit" BeforeTargets="WitCompile_InvokeTool">
+    <Copy SourceFiles="..\..\rust\witguest\wit\world.wit" DestinationFiles="wit\world.wit" />
+  </Target>
+
   <!-- Remove bindgen of LyraApi WIT .-->
   <!-- <Target Name="RemoveBindgenLyraApi" AfterTargets="WitCompile_InvokeTool">
     <ItemGroup>

guests/csharp/dotnet-guest-test/wit/deps/lyraapi/asset.wit

@@ -0,0 +1,27 @@
+interface asset {
+    resource asset-handle {
+        set-watched: func(watched: bool);
+        version: func() -> u64;
+        uuid: func() -> string;
+        path: func() -> option<string>;
+        is-watched: func() -> bool;
+        is-loaded: func() -> bool;
+        wait-for-load: func();
+        wait-recurse-dependencies-load: func();
+    }
+
+    resource image-handle {
+        from-raw-handle: static func(raw-handle: borrow<asset-handle>) -> option<image-handle>;
+
+        height: func() -> option<u32>;
+        width: func() -> option<u32>;
+        get-bytes: func() -> option<list<u8>>;
+    }
+
+    use ecs.{ecs-world};
+
+    resource asset-manager {
+        from-world: static func(w: borrow<ecs-world>) -> option<asset-manager>;
+        request: func(path: string) -> asset-handle;
+    }
+}

guests/csharp/dotnet-guest-test/wit/deps/lyraapi/world.wit

@@ -2,4 +2,5 @@ package lyra:api;
 
 world imports {
     import ecs;
+    import asset;
 }

guests/csharp/dotnet-guest-test/wit/world.wit

@@ -11,6 +11,7 @@ interface math {
 /// An example world for the component to target.
 world example {
     import math;
+    import lyra:api/asset;
     use lyra:api/ecs.{ecs-world, entity};
 
     import host-print: func(msg: string);

guests/rust/common-api/wit/asset.wit

@@ -0,0 +1,27 @@
+interface asset {
+    resource asset-handle {
+        set-watched: func(watched: bool);
+        version: func() -> u64;
+        uuid: func() -> string;
+        path: func() -> option<string>;
+        is-watched: func() -> bool;
+        is-loaded: func() -> bool;
+        wait-for-load: func();
+        wait-recurse-dependencies-load: func();
+    }
+
+    resource image-handle {
+        from-raw-handle: static func(raw-handle: borrow<asset-handle>) -> option<image-handle>;
+
+        height: func() -> option<u32>;
+        width: func() -> option<u32>;
+        get-bytes: func() -> option<list<u8>>;
+    }
+
+    use ecs.{ecs-world};
+
+    resource asset-manager {
+        from-world: static func(w: borrow<ecs-world>) -> option<asset-manager>;
+        request: func(path: string) -> asset-handle;
+    }
+}

guests/rust/common-api/wit/world.wit

@@ -2,4 +2,5 @@ package lyra:api;
 
 world imports {
     import ecs;
+    import asset;
 }

guests/rust/witguest/src/lib.rs

@@ -5,6 +5,7 @@ wit_bindgen::generate!({
 
     with: {
         "lyra:api/ecs": common_api::bindings::lyra::api::ecs,
+        "lyra:api/asset": common_api::bindings::lyra::api::asset,
     },
 });
 

guests/rust/witguest/wit/deps/lyraapi/asset.wit

@@ -0,0 +1,27 @@
+interface asset {
+    resource asset-handle {
+        set-watched: func(watched: bool);
+        version: func() -> u64;
+        uuid: func() -> string;
+        path: func() -> option<string>;
+        is-watched: func() -> bool;
+        is-loaded: func() -> bool;
+        wait-for-load: func();
+        wait-recurse-dependencies-load: func();
+    }
+
+    resource image-handle {
+        from-raw-handle: static func(raw-handle: borrow<asset-handle>) -> option<image-handle>;
+
+        height: func() -> option<u32>;
+        width: func() -> option<u32>;
+        get-bytes: func() -> option<list<u8>>;
+    }
+
+    use ecs.{ecs-world};
+
+    resource asset-manager {
+        from-world: static func(w: borrow<ecs-world>) -> option<asset-manager>;
+        request: func(path: string) -> asset-handle;
+    }
+}

guests/rust/witguest/wit/deps/lyraapi/world.wit

@@ -2,4 +2,5 @@ package lyra:api;
 
 world imports {
     import ecs;
+    import asset;
 }

guests/rust/witguest/wit/world.wit

@@ -11,6 +11,7 @@ interface math {
 /// An example world for the component to target.
 world example {
     import math;
+    import lyra:api/asset;
     use lyra:api/ecs.{ecs-world, entity};
 
     import host-print: func(msg: string);

mise.toml

@@ -0,0 +1,2 @@
+[tools]
+dotnet = "9.0.100-rc.2.24474.11"

src/asset.rs

@@ -0,0 +1,155 @@
+use std::any::TypeId;
+
+use async_trait::async_trait;
+use tokio::task;
+use wasmtime::component::Resource as WasmResource;
+
+use crate::WasmError;
+use crate::{lyra, Imports};
+
+use lyra::api::asset as wasm_asset;
+use lyra::api::ecs as wasm_ecs;
+
+impl wasm_asset::Host for Imports {}
+
+#[async_trait]
+impl wasm_asset::HostAssetManager for Imports {
+    async fn from_world(&mut self, world: WasmResource<wasm_ecs::EcsWorld>) -> Option<WasmResource<wasm_asset::AssetManager>> {
+        let world_entry = self
+            .world_slab
+            .get(world.rep() as _)
+            .ok_or(WasmError::InvalidResourceHandle("EcsWorld")).unwrap();
+        let world = &world_entry.world;
+
+        let man = world.get_resource_data::<lyra_engine::assets::ResourceManager>()?;
+        let man_rep = self.asset_manager_slab.insert(man);
+
+        Some(WasmResource::new_own(man_rep as _))
+    }
+
+    async fn request(
+        &mut self,
+        this: WasmResource<wasm_asset::AssetManager>,
+        path: String,
+    ) -> WasmResource<wasm_asset::AssetHandle> {
+        let man = self.asset_manager_slab.get(this.rep() as _)
+            .unwrap()
+            .get::<lyra_engine::assets::ResourceManager>();
+        let res = man.request_raw(&path).unwrap();
+        let rep = self.asset_handles_slab.insert(res);
+        WasmResource::new_own(rep as _)
+    }
+
+    async fn drop(&mut self, this: WasmResource<wasm_asset::AssetManager>) -> wasmtime::Result<()> {
+        let rep = this.rep() as usize;
+        if self.asset_handles_slab.contains(rep) {
+            self.asset_manager_slab.remove(rep);
+        }
+
+        Ok(())
+    }
+}
+
+#[async_trait]
+impl wasm_asset::HostAssetHandle for Imports {
+    async fn set_watched(&mut self, this: WasmResource<wasm_asset::AssetHandle>, watched: bool) {
+        let han = self.asset_handles_slab.get(this.rep() as _)
+            .unwrap();
+
+        todo!()
+    }
+
+    async fn version(&mut self, this: WasmResource<wasm_asset::AssetHandle>) -> u64 {
+        let han = self.asset_handles_slab.get(this.rep() as _)
+            .unwrap();
+        han.version() as u64
+    }
+
+    async fn uuid(&mut self, this: WasmResource<wasm_asset::AssetHandle>) -> String {
+        let han = self.asset_handles_slab.get(this.rep() as _)
+            .unwrap();
+        han.uuid().to_string()
+    }
+
+    async fn path(&mut self, this: WasmResource<wasm_asset::AssetHandle>) -> Option<String> {
+        let han = self.asset_handles_slab.get(this.rep() as _)
+            .unwrap();
+        han.path()
+    }
+
+    async fn is_watched(&mut self, this: WasmResource<wasm_asset::AssetHandle>) -> bool {
+        let han = self.asset_handles_slab.get(this.rep() as _)
+            .unwrap();
+        han.is_watched()
+    }
+
+    async fn is_loaded(&mut self, this: WasmResource<wasm_asset::AssetHandle>) -> bool {
+        let han = self.asset_handles_slab.get(this.rep() as _)
+            .unwrap();
+        han.is_loaded()
+    }
+
+    async fn wait_for_load(&mut self, this: WasmResource<wasm_asset::AssetHandle>) {
+        let han = self.asset_handles_slab.get(this.rep() as _)
+            .unwrap().clone();
+
+        tokio::task::spawn_blocking(move || {
+            han.wait_for_load();
+        }).await.unwrap();
+    }
+
+    async fn wait_recurse_dependencies_load(
+        &mut self,
+        this: WasmResource<wasm_asset::AssetHandle>,
+    ) {
+        let han = self.asset_handles_slab.get(this.rep() as _)
+            .unwrap().clone();
+
+        tokio::task::spawn_blocking(move || {
+            han.wait_recurse_dependencies_load();
+        }).await.unwrap();
+    }
+
+    async fn drop(&mut self, this: WasmResource<wasm_asset::AssetHandle>) -> wasmtime::Result<()> {
+        todo!()
+    }
+}
+
+#[async_trait]
+impl wasm_asset::HostImageHandle for Imports {
+    async fn from_raw_handle(&mut self, raw_handle: WasmResource<wasm_asset::AssetHandle>) -> Option<WasmResource<wasm_asset::ImageHandle>> {
+        let untyped = self.asset_handles_slab.get(raw_handle.rep() as _)?;
+        // image will be none if the asset is not an image asset
+        let image = untyped.as_typed::<lyra_engine::assets::Image>();
+        if image.is_some() {
+            Some(WasmResource::new_own(raw_handle.rep()))
+        } else {
+            None
+        }
+    }
+
+    async fn height(&mut self, this: WasmResource<wasm_asset::ImageHandle>) -> Option<u32> {
+        let untyped = self.asset_handles_slab.get(this.rep() as _)?;
+        let image = untyped.as_typed::<lyra_engine::assets::Image>()?;
+        let image = image.data_ref()?;
+        Some(image.height())
+    }
+
+    async fn width(&mut self, this: WasmResource<wasm_asset::ImageHandle>) -> Option<u32> {
+        let untyped = self.asset_handles_slab.get(this.rep() as _)?;
+        let image = untyped.as_typed::<lyra_engine::assets::Image>()?;
+        let image = image.data_ref()?;
+        Some(image.width())
+    }
+
+    async fn get_bytes(&mut self, this: WasmResource<wasm_asset::ImageHandle>) -> Option<Vec<u8>> {
+        let untyped = self.asset_handles_slab.get(this.rep() as _)?;
+        let image = untyped.as_typed::<lyra_engine::assets::Image>()?;
+        let image = image.data_ref()?;
+        Some(image.as_bytes().to_vec())
+    }
+
+    async fn drop(&mut self, this: WasmResource<wasm_asset::ImageHandle>) -> wasmtime::Result<()> {
+        todo!()
+    }
+}

src/main.rs

@@ -13,21 +13,24 @@ use lyra_ecs::{query::dynamic::DynamicViewOne, DynTypeId, World};
 
 use lyra_ecs as ecs;
 
-use ::lyra_engine::DeltaTime;
+use lyra_engine::DeltaTime;
 use lyra_reflect::{FromType, ReflectedResource, RegisteredType, TypeRegistry};
 use slab::Slab;
 use thiserror::Error;
 use wasmtime_wasi::{ResourceTable, WasiCtx, WasiCtxBuilder, WasiView};
 
-use wasmtime::component::Resource as WasmResource;
+use wasmtime::component::{Resource as WasmResource, ResourceAny};
 
 mod proxy;
 pub use proxy::*;
 
-#[allow(unused_imports)]
+mod asset;
+pub use asset::*;
+
+/* #[allow(unused_imports)]
 pub(crate) mod lyra_engine {
     pub use lyra_ecs as ecs;
-}
+} */
 
 wasmtime::component::bindgen!({
     world: "example",
@@ -84,12 +87,14 @@ struct DynamicViewEntry {
 
 unsafe impl Send for DynamicViewEntry {}
 
-struct Imports {
-    world_slab: Slab<WorldEntry>,
-    world_views_slab: Slab<DynamicViewEntry>,
+pub(crate) struct Imports {
+    pub(crate) world_slab: Slab<WorldEntry>,
+    pub(crate) world_views_slab: Slab<DynamicViewEntry>,
+    pub(crate) asset_manager_slab: Slab<lyra_ecs::ResourceData>,
+    pub(crate) asset_handles_slab: Slab<lyra_engine::assets::UntypedResHandle>,
 
-    ctx: WasiCtx,
-    table: ResourceTable,
+    pub(crate) ctx: WasiCtx,
+    pub(crate) table: ResourceTable,
 }
 
 impl WasiView for Imports {
@@ -251,21 +256,30 @@ impl wasm_ecs::HostEcsWorld for Imports {
     async fn get_resource(&mut self, this: wasmtime::component::Resource<wasm_ecs::EcsWorld>, type_id: wasm_ecs::WasmTypeId) -> wasm_ecs::WorldResourceResult {
         let world_entry = self
             .world_slab
-            .try_remove(this.rep() as _)
+            .get(this.rep() as _)
             .ok_or(WasmError::InvalidResourceHandle("EcsWorld")).unwrap();
         let world = &world_entry.world;
 
-        let native_type = world.get_resource::<GuestTypeLookup>().unwrap();
-        let native_tid = native_type.lookup_type_id(type_id)
-            .expect("failed to find native type id of wasm type");
+        let native_tid = {
+            let native_type = world.get_resource::<GuestTypeLookup>().unwrap();
+            native_type.lookup_type_id(type_id)
+                .expect("failed to find native type id of wasm type")
+        };
 
-        let reg = world.get_resource::<TypeRegistry>().unwrap();
-        let data = reg.get_type(native_tid).unwrap();
-        let proxy = data.get_data::<WasmProxied>().unwrap();
+        let data = {
+            let reg = world.get_resource::<TypeRegistry>().unwrap();
+            reg.get_type(native_tid).unwrap().clone()
+        };
 
-        let refl = data.get_data::<ReflectedResource>().unwrap();
+        let proxy = data.get_data::<WasmProxied>().unwrap().clone();        
+        let refl = data.get_data::<ReflectedResource>().unwrap().clone();
+
+        // SAFETY: reflecting the resource borrows from a different part of the world
+        // then marshaling would.
+        let w = NonNull::from(world);
+        let world = unsafe { w.as_ref() };
         let refl = refl.reflect(world).unwrap();
-        let res = proxy.marshal_to_bytes(refl.deref());
+        let res = proxy.marshal_to_bytes(self, refl.deref());
 
         res
     }
@@ -439,12 +453,8 @@ async fn main() -> wasmtime::Result<()> {
     // Configure the linker
     let mut linker = wasmtime::component::Linker::new(&engine);
 
-    //wasmtime_wasi::preview0::add_to_linker_sync(&mut linker, |s| s)?;
-    //wasmtime_wasi::bindings::Imports::add_to_linker(&mut linker, |s| s)?;
     wasmtime_wasi::add_to_linker_async(&mut linker)?;
     Example::add_to_linker(&mut linker, |s| s)?;
-    //lyra::api::ecs::add_to_linker(&mut linker, |s| s)?;
-    //Api::add_to_linker(&mut linker, |s| s)?;
 
     let mut builder = WasiCtxBuilder::new();
     builder.inherit_stdio();
@@ -456,6 +466,8 @@ async fn main() -> wasmtime::Result<()> {
             // wants another world for some reason.
             world_slab: Slab::with_capacity(1),
             world_views_slab: Slab::with_capacity(10),
+            asset_manager_slab: Slab::with_capacity(1),
+            asset_handles_slab: Slab::with_capacity(25),
             ctx: builder.build(),
             table: ResourceTable::new(),
         },
@@ -470,10 +482,12 @@ async fn main() -> wasmtime::Result<()> {
         let mut world = World::new();
 
         world.add_resource(DeltaTime::from(100.00));
+        world.add_resource(lyra_engine::assets::ResourceManager::default());
         
         let mut lookup = GuestTypeLookup::default();
         lookup.infos.insert(4124409524, lyra_ecs::ComponentInfo::new::<Vec3>());
-        lookup.type_ids.insert(83716348954, TypeId::of::<::lyra_engine::DeltaTime>());
+        lookup.type_ids.insert(83716348954, TypeId::of::<lyra_engine::DeltaTime>());
+        lookup.type_ids.insert(567234789345, TypeId::of::<lyra_engine::assets::ResourceManager>());
         world.add_resource(lookup);
 
         {
@@ -507,36 +521,6 @@ async fn main() -> wasmtime::Result<()> {
     //call_script_stage_async(&mut store, &instance, "update", world_res_b, script_en.into()).await?;
     println!("RUST: Guest is done");
 
-    let rep = world_res_b.rep();
-    if let Some(w) = store.data().world_slab.get(rep as _) {
-        let w = &w.world;
-        println!("RUST: Got {} archetypes", w.archetype_count());
-        for a in w.archetypes.values() {
-            println!("RUST: Archetype {}", a.id().0);
-            for col in &a.columns {
-                println!("RUST:   Column type id: {:?}", col.info.type_id());
-
-                if col.info.type_id().is_id(DynTypeId::Unknown(4124409524)) {
-                    println!("RUST:     Found C# Vec3");
-                    let pos = unsafe { col.get::<Vec3>(0) };
-                    println!("RUST:     Entity 0 pos: {:?}", *pos);
-                }
-            }
-        }
-
-        let mut dv = w.dynamic_view();
-        dv.push(QueryDynamicType::from_info(lyra_ecs::ComponentInfo::new::<Vec3>()));
-        let iter = dv.into_iter();
-
-        for (_, comps) in iter {
-            let first = comps.first().unwrap();
-            unsafe {
-                let v: Vec3 = std::ptr::read(first.ptr.as_ptr() as _);
-                println!("RUST: Found native Vec3! {:?}", v);
-            }
-        }
-    }
-
     Ok(())
 }
 

src/proxy.rs

@@ -1,20 +1,20 @@
-use crate::lyra::api::ecs as wasm_ecs;
+use crate::{lyra::api::ecs as wasm_ecs, Imports};
 use common_api::bytemuck;
 use lyra_engine::DeltaTime;
 use lyra_reflect::{FromType, Reflect};
 
 pub trait WasmProxy {
-    fn marshal_to_bytes(&self) -> wasm_ecs::WorldResourceResult;
+    fn marshal_to_bytes(&self, imports: &mut Imports) -> wasm_ecs::WorldResourceResult;
 }
 
 #[derive(Clone)]
 pub struct WasmProxied {
-    fn_marshal: for<'a> fn (&'a dyn Reflect) -> wasm_ecs::WorldResourceResult,
+    fn_marshal: for<'a> fn (&mut Imports, &'a dyn Reflect) -> wasm_ecs::WorldResourceResult,
 }
 
 impl WasmProxied {
-    pub fn marshal_to_bytes(&self, reflected: &dyn Reflect) -> wasm_ecs::WorldResourceResult {
-        (self.fn_marshal)(reflected)
+    pub fn marshal_to_bytes(&self, imports: &mut Imports, reflected: &dyn Reflect) -> wasm_ecs::WorldResourceResult {
+        (self.fn_marshal)(imports, reflected)
     }
 }
 
@@ -24,16 +24,25 @@ where
 {
     fn from_type() -> Self {
         WasmProxied {
-            fn_marshal: |reflect| {
+            fn_marshal: |imports, reflect| {
                 let this: &T = reflect.as_any().downcast_ref().unwrap();
-                this.marshal_to_bytes()
+                this.marshal_to_bytes(imports)
             }
         }
     }
 }
 
 impl WasmProxy for DeltaTime {
-    fn marshal_to_bytes(&self) -> wasm_ecs::WorldResourceResult {
+    fn marshal_to_bytes(&self, _: &mut Imports) -> wasm_ecs::WorldResourceResult {
         wasm_ecs::WorldResourceResult::Bytes(bytemuck::bytes_of(&**self).to_vec())
     }
 }
+
+impl WasmProxy for lyra_engine::assets::ResourceManager {
+    fn marshal_to_bytes(&self, imports: &mut Imports) -> wasm_ecs::WorldResourceResult {
+        //imports.
+
+        todo!()
+        //imports.asset_manager_slab.insert(val)
+    }
+}