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use crate::asset::{Assets, Handle as AssetHandle};
use crate::ecs::Component;
use crate::material::Material;
use crate::mesh::Mesh;
pub mod asset;
#[derive(Debug, Clone, Component)]
#[non_exhaustive]
pub struct Model
{
pub spec_asset: AssetHandle<Spec>,
}
impl Model
{
pub fn new(asset_handle: AssetHandle<Spec>) -> Self
{
Self { spec_asset: asset_handle }
}
}
#[derive(Debug, Clone)]
#[non_exhaustive]
pub struct Spec
{
pub mesh_asset: Option<AssetHandle<Mesh>>,
pub materials: Vec<MaterialDescription>,
}
impl Spec
{
pub fn builder() -> SpecBuilder
{
SpecBuilder::default()
}
pub fn find_first_material<'assets>(
&'assets self,
assets: &'assets Assets,
) -> MaterialSearchResult<'assets>
{
let Some(material_desc) = self.materials.first() else {
return MaterialSearchResult::NoMaterials;
};
if assets.get(&material_desc.asset).is_none() {
tracing::trace!("Missing material asset");
return MaterialSearchResult::NotFound;
}
MaterialSearchResult::Found(&material_desc.asset)
}
}
#[derive(Debug, Default, Clone)]
pub struct SpecBuilder
{
mesh_asset: Option<AssetHandle<Mesh>>,
materials: Vec<MaterialDescription>,
}
impl SpecBuilder
{
pub fn mesh(mut self, asset: AssetHandle<Mesh>) -> Self
{
self.mesh_asset = Some(asset);
self
}
pub fn materials(
mut self,
materials: impl IntoIterator<Item = MaterialDescription>,
) -> Self
{
self.materials = materials.into_iter().collect();
self
}
#[tracing::instrument(skip_all)]
pub fn build(self) -> Spec
{
Spec {
mesh_asset: self.mesh_asset,
materials: self.materials,
}
}
}
#[derive(Debug, Clone)]
#[non_exhaustive]
pub struct MaterialDescription
{
pub asset: AssetHandle<Material>,
}
impl MaterialDescription
{
pub fn new(asset: AssetHandle<Material>) -> Self
{
Self { asset }
}
}
pub enum MaterialSearchResult<'a>
{
Found(&'a AssetHandle<Material>),
NotFound,
NoMaterials,
}
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