lua: expose fields on some types from lyra_resource

lyra-scripting/lyra-scripting-derive/src/handle_macro.rs

@@ -1,10 +1,10 @@
 use quote::{format_ident, quote};
 use syn::{braced, parenthesized, parse_macro_input, token, Ident, Path, Token};
 
-struct FieldGetter {
+pub(crate) struct FieldGetter {
-    field: Ident,
+    pub field: Ident,
-    body: Option<syn::Block>,
+    pub body: Option<syn::Block>,
-    wrapper_type: Option<syn::Path>,
+    pub wrapper_type: Option<syn::Path>,
 }
 
 impl FieldGetter {
@@ -131,6 +131,7 @@ impl syn::parse::Parse for HandleWrapUsage {
 pub(crate) fn lua_wrap_handle_impl(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
     let input = parse_macro_input!(input as HandleWrapUsage);
     
+    let handle_path = &input.type_path;
     let handle_name = &input.type_path.segments.last().unwrap().ident;
 
     let base_name = input.override_name.unwrap_or_else(|| handle_name.clone());
@@ -145,7 +146,7 @@ pub(crate) fn lua_wrap_handle_impl(input: proc_macro::TokenStream) -> proc_macro
         
         let field_creator = match &g.wrapper_type {
             Some(wrap) => {
-                quote!(#wrap(data.#field).into_lua(lua))
+                quote!(#wrap(data.#field.clone()).into_lua(lua))
             },
             None => match &g.body {
                 Some(body) => {
@@ -170,18 +171,18 @@ pub(crate) fn lua_wrap_handle_impl(input: proc_macro::TokenStream) -> proc_macro
 
     quote! {
         #[derive(Clone, Reflect)]
-        pub struct #wrapper_name(pub ResHandle<#handle_name>);
+        pub struct #wrapper_name(pub ResHandle<#handle_path>);
 
         impl Deref for #wrapper_name {
-            type Target = ResHandle<#handle_name>;
+            type Target = ResHandle<#handle_path>;
 
             fn deref(&self) -> &Self::Target {
                 &self.0
             }
         }
 
-        impl From<ResHandle<#handle_name>> for #wrapper_name {
+        impl From<ResHandle<#handle_path>> for #wrapper_name {
-            fn from(value: ResHandle<#handle_name>) -> Self {
+            fn from(value: ResHandle<#handle_path>) -> Self {
                 #wrapper_name(value)
             }
         }
@@ -224,7 +225,7 @@ pub(crate) fn lua_wrap_handle_impl(input: proc_macro::TokenStream) -> proc_macro
                 });
 
                 methods.add_function(FN_NAME_INTERNAL_REFLECT_TYPE, |_, ()| {
-                    Ok(ScriptBorrow::from_component::<ResHandle<#handle_name>>(None))
+                    Ok(ScriptBorrow::from_component::<ResHandle<#handle_path>>(None))
                 });
                 methods.add_method(FN_NAME_INTERNAL_REFLECT, |_, this, ()| {
                     Ok(ScriptBorrow::from_component(Some(this.0.clone())))
@@ -247,7 +248,7 @@ pub(crate) fn lua_wrap_handle_impl(input: proc_macro::TokenStream) -> proc_macro
 
         impl LuaWrapper for #wrapper_name {
             fn wrapped_type_id() -> std::any::TypeId {
-                TypeId::of::<ResHandle<#handle_name>>()
+                TypeId::of::<ResHandle<#handle_path>>()
             }
         }
     }.into()

lyra-scripting/lyra-scripting-derive/src/lua_macro.rs

@@ -1,8 +1,8 @@
 use proc_macro2::Span;
 use quote::quote;
-use syn::{parenthesized, parse_macro_input, punctuated::Punctuated, token, Ident, Path, Token};
+use syn::{braced, parenthesized, parse_macro_input, punctuated::Punctuated, token, Ident, Path, Token};
 
-use crate::{FN_NAME_INTERNAL_REFLECT, FN_NAME_INTERNAL_REFLECT_TYPE};
+use crate::{handle_macro::FieldGetter, FN_NAME_INTERNAL_REFLECT, FN_NAME_INTERNAL_REFLECT_TYPE};
 
 #[derive(Clone, Copy, Debug, PartialEq)]
 enum SkipType {
@@ -297,6 +297,7 @@ struct WrapUsage {
     /// The extra derives of the type.
     override_name: Option<Ident>,
     auto_fields: Vec<Ident>,
+    manual_field_getters: Vec<FieldGetter>,
     auto_derives: Vec<Ident>,
     auto_new: bool,
     meta_methods: Vec<MetaMethod>,
@@ -314,6 +315,7 @@ impl syn::parse::Parse for WrapUsage {
             override_name: None,
             auto_fields: vec![],
             auto_derives: vec![],
+            manual_field_getters: vec![],
             extra_fields: None,
             extra_methods: None,
             auto_new: false,
@@ -384,6 +386,17 @@ impl syn::parse::Parse for WrapUsage {
                         let _eq: Token![=] = input.parse()?;
                         s.extra_methods = Some(input.parse::<syn::Block>()?);
                     },
+                    "field_getters" => {
+                        let _eq: Token![=] = input.parse()?;
+
+                        if input.peek(token::Brace) {
+                            let content;
+                            let _braced: token::Brace = braced!(content in input);
+    
+                            let terminated = content.parse_terminated(FieldGetter::parse, Token![,])?;
+                            s.manual_field_getters = terminated.into_iter().collect();
+                        }
+                    }
                     _ => {
                         return Err(syn::Error::new_spanned(ident, format!("unknown wrapper command: '{}'", ident_str)));
                     }
@@ -469,6 +482,30 @@ pub fn wrap_lua_struct_impl(input: proc_macro::TokenStream) -> proc_macro::Token
         }
     };
 
+    let custom_getters = input.manual_field_getters.iter().map(|g| {
+        let field = &g.field;
+        
+        let field_creator = match &g.wrapper_type {
+            Some(wrap) => {
+                quote!(#wrap(this.#field).into_lua(lua))
+            },
+            None => match &g.body {
+                Some(body) => {
+                    quote!(#body)
+                },
+                None => {
+                    quote!(this.#field.clone().into_lua(lua))
+                }
+            }
+        };
+
+        quote! {
+            fields.add_field_method_get(stringify!($field), |lua, this| {
+                #field_creator
+            });
+        }
+    });
+
     proc_macro::TokenStream::from(quote! {
         #[derive(Clone, lyra_reflect::Reflect, #(#derive_idents_iter),*)]
         pub struct #wrapper_typename(#[reflect(skip)] pub(crate) #path);
@@ -499,6 +536,7 @@ pub fn wrap_lua_struct_impl(input: proc_macro::TokenStream) -> proc_macro::Token
         impl mlua::UserData for #wrapper_typename {
             fn add_fields<F: mlua::UserDataFields<Self>>(fields: &mut F) {
                 #(#field_get_set_pairs)*
+                #(#custom_getters)*
 
                 #extra_fields
             }

lyra-scripting/scripts/lua/action_handler.lua

@@ -1,9 +0,0 @@
----@enum ActionState
-ActionState = {
-    IDLE = "idle",
-    PRESSED = "pressed",
-    JUST_PRESSED = "just_pressed",
-    JUST_RELEASED = "just_released",
-    AXIS = "axis",
-    OTHER = "other",
-}

lyra-scripting/scripts/lua/asset_handle.lua

@@ -1,12 +0,0 @@
----@enum HandleState
-HandleState = {
-    LOADING = "loading",
-    READY = "ready",
-    ERROR = "error",
-}
-
----@enum ActionKind
-ActionKind = {
-    BUTTON = "button",
-    AXIS = "axis",
-}

lyra-scripting/scripts/lua/enums.lua

@@ -0,0 +1,63 @@
+---@enum WindowMode
+WindowMode = {
+    WNDOWED = "windowed",
+    BORDERLESS_FULLSCREEN = "borderless_fullscreen",
+    SIZED_FULLSCREEN = "sized_fullscreen",
+    FULLSCREEN = "fullscreen",
+}
+
+---@enum CursorGrabMode
+CursorGrabMode = {
+    NONE = "none",
+    CONFINED = "confined",
+    LOCKED = "locked",
+}
+
+---@enum WindowTheme
+WindowTheme = {
+    LIGHT = "light",
+    DARK = "dark",
+}
+
+---@enum WindowLevel
+WindowLevel = {
+    ALWAYS_ON_BOTTOM = "always_on_bottom",
+    NORMAL = "normal",
+    ALWAYS_ON_TOP = "always_on_top",
+}
+
+---@enum HandleState
+HandleState = {
+    LOADING = "loading",
+    READY = "ready",
+    ERROR = "error",
+}
+
+---@enum ActionKind
+ActionKind = {
+    BUTTON = "button",
+    AXIS = "axis",
+}
+
+---@enum ActionState
+ActionState = {
+    IDLE = "idle",
+    PRESSED = "pressed",
+    JUST_PRESSED = "just_pressed",
+    JUST_RELEASED = "just_released",
+    AXIS = "axis",
+    OTHER = "other",
+}
+
+---@enum FilterMode
+FilterMode = {
+    NEAREST = "nearest",
+    LINEAR = "linear",
+}
+
+---@enum WrappingMode
+WrappingMode = {
+    CLAMP_TO_EDGE = "clamp_to_edge",
+    MIRRORED_REPEAT = "mirrored_repeat",
+    REPEAT = "repeat",
+}

lyra-scripting/scripts/lua/window.lua

@@ -1,27 +0,0 @@
----@enum WindowMode
-WindowMode = {
-    WNDOWED = "windowed",
-    BORDERLESS_FULLSCREEN = "borderless_fullscreen",
-    SIZED_FULLSCREEN = "sized_fullscreen",
-    FULLSCREEN = "fullscreen",
-}
-
----@enum CursorGrabMode
-CursorGrabMode = {
-    NONE = "none",
-    CONFINED = "confined",
-    LOCKED = "locked",
-}
-
----@enum WindowTheme
-WindowTheme = {
-    LIGHT = "light",
-    DARK = "dark",
-}
-
----@enum WindowLevel
-WindowLevel = {
-    ALWAYS_ON_BOTTOM = "always_on_bottom",
-    NORMAL = "normal",
-    ALWAYS_ON_TOP = "always_on_top",
-}

lyra-scripting/src/lua/providers/ecs.rs

@@ -40,12 +40,8 @@ impl ScriptApiProvider for LyraEcsApiProvider {
     fn expose_api(&mut self, _: &ScriptData, ctx: &mut Self::ScriptContext) -> Result<(), crate::ScriptError> {
         let ctx = ctx.lock().unwrap();
 
-        // load window enums
+        // load enums
-        let bytes = include_str!("../../../scripts/lua/window.lua");
+        let bytes = include_str!("../../../scripts/lua/enums.lua");
-        ctx.load(bytes).exec().unwrap();
-
-        // load asset handle enums
-        let bytes = include_str!("../../../scripts/lua/asset_handle.lua");
         ctx.load(bytes).exec().unwrap();
 
         let globals = ctx.globals();

lyra-scripting/src/lua/wrappers/asset/mod.rs

@@ -1,6 +1,6 @@
 use std::{any::TypeId, ops::Deref};
 //use mlua::{AnyUserData, IntoLua, FromLua, Lua, Value};
-use lyra_resource::{gltf::{Gltf, Material, Mesh}, Texture, ResHandle, UntypedResHandle};
+use lyra_resource::{gltf::{Gltf, Material, Mesh}, FilterMode, ResHandle, Texture, UntypedResHandle, WrappingMode};
 use lyra_game::scene::SceneGraph;
 use lyra_reflect::{Reflect, TypeData};
 use lyra_scripting_derive::{lua_wrap_handle, wrap_lua_struct};
@@ -111,15 +111,87 @@ impl mlua::FromLua for LuaResHandle {
     }
 }
 
-// TODO: fields
+fn filter_mode_to_str(fm: FilterMode) -> &'static str {
-wrap_lua_struct!(lyra_resource::gltf::PbrGlossiness, skip(lua_reflect)); // doesn't need internal lua reflection methods
+    match fm {
-// TODO: fields
+        FilterMode::Nearest => "nearest",
-wrap_lua_struct!(lyra_resource::gltf::Specular, skip(lua_reflect)); // doesn't need internal lua reflection methods
+        FilterMode::Linear => "linear",
+    }
+}
+
+fn wrapping_mode_to_str(wm: WrappingMode) -> &'static str {
+    match wm {
+        WrappingMode::ClampToEdge => "clamp_to_edge",
+        WrappingMode::MirroredRepeat => "mirrored_repeat",
+        WrappingMode::Repeat => "repeat",
+    }
+}
+
+wrap_lua_struct!(lyra_resource::TextureSampler,
+    // this can be safely skipped since it wont be a component or resource.
+    skip(lua_reflect),
+    field_getters={
+        (mag_filter, {
+            this.mag_filter.map(|f| filter_mode_to_str(f))
+                .into_lua(lua)
+        }),
+        (min_filter, {
+            this.min_filter.map(|f| filter_mode_to_str(f))
+                .into_lua(lua)
+        }),
+        (mipmap_filter, {
+            this.mipmap_filter.map(|f| filter_mode_to_str(f))
+                .into_lua(lua)
+        }),
+        (wrap_u, {
+            wrapping_mode_to_str(this.wrap_u)
+                .into_lua(lua)
+        }),
+        (wrap_v, {
+            wrapping_mode_to_str(this.wrap_v)
+                .into_lua(lua)
+        }),
+        (wrap_w, {
+            wrapping_mode_to_str(this.wrap_w)
+                .into_lua(lua)
+        }),
+    }
+);
+
+wrap_lua_struct!(lyra_resource::gltf::PbrGlossiness,
+    // this can be safely skipped since it wont be a component or resource.
+    skip(lua_reflect),
+    field_getters={
+        (diffuse_color, wrapper=crate::lua::wrappers::LuaVec4),
+        (specular, wrapper=crate::lua::wrappers::LuaVec3),
+        glossiness,
+    }
+);
+
+wrap_lua_struct!(lyra_resource::gltf::Specular,
+    // this can be safely skipped since it wont be a component or resource.
+    skip(lua_reflect),
+    field_getters={
+        factor,
+        (color_factor, wrapper=crate::lua::wrappers::LuaVec3),
+    },
+    extra_fields={
+        fields.add_field_method_get("texture", |lua, this| {
+            this.texture.clone()
+                .map(|t| LuaTextureHandle(t))
+                .into_lua(lua)
+        });
+        fields.add_field_method_get("color_texture", |lua, this| {
+            this.color_texture.clone()
+                .map(|t| LuaTextureHandle(t))
+                .into_lua(lua)
+        });
+    }
+);
 
 // TODO: fields
 lua_wrap_handle!(SceneGraph, name=Scene, {});
 
-lua_wrap_handle!(Mesh, 
+lua_wrap_handle!(Mesh,
     field_getters={
         (material, {
             data.material.clone()
@@ -154,10 +226,32 @@ lua_wrap_handle!(Mesh,
             }
         });
 
-        // TODO: attributes
+        // TODO: mesh attributes
     }
 );
-lua_wrap_handle!(Texture, {});
+
+lua_wrap_handle!(lyra_resource::Image,
+    field_getters={
+        (width, {
+            data.width().into_lua(lua)
+        }),
+        (height, {
+            data.height().into_lua(lua)
+        })
+    }
+);
+
+lua_wrap_handle!(Texture,
+    field_getters={
+        (image, wrapper=LuaImageHandle),
+        (sampler, {
+            data.sampler.clone()
+                .map(|s| LuaTextureSampler(s))
+                .into_lua(lua)
+        })
+    }
+
+);
 
 lua_wrap_handle!(Material,
     field_getters={
@@ -185,7 +279,6 @@ lua_wrap_handle!(Material,
         alpha_cutoff,
         (alpha_mode, {
             match data.alpha_mode {
-                // TODO: Lua enums
                 lyra_resource::gltf::AlphaMode::Opaque => "opaque",
                 lyra_resource::gltf::AlphaMode::Mask => "mask",
                 lyra_resource::gltf::AlphaMode::Blend => "blend",