1 files changed, 112 insertions, 0 deletions
diff --git a/engine/src/renderer/object.rs b/engine/src/renderer/object.rs
new file mode 100644
index 0000000..d8bb2e3
--- /dev/null
+++ b/engine/src/renderer/object.rs
@@ -0,0 +1,112 @@
+use std::collections::HashMap;
+use std::collections::hash_map::Entry as HashMapEntry;
+
+use ecs::Component;
+
+use crate::asset::Id as AssetId;
+
+/// Renderer object ID.
+#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
+pub enum Id
+{
+    Asset(AssetId),
+    Other(u64),
+}
+
+/// Renderer object store.
+#[derive(Debug, Default, Component)]
+pub struct Store
+{
+    objects: HashMap<Id, Object>,
+}
+
+impl Store
+{
+    pub fn get_obj(&self, id: &Id) -> Option<&Object>
+    {
+        self.objects.get(id)
+    }
+
+    pub fn get_texture_obj(&self, id: &Id) -> Option<&Object>
+    {
+        let obj = self.get_obj(id)?;
+
+        if !matches!(obj.kind(), Kind::Texture) {
+            return None;
+        }
+
+        Some(obj)
+    }
+
+    pub fn contains_with_id(&self, id: &Id) -> bool
+    {
+        self.objects.contains_key(id)
+    }
+
+    pub fn insert(&mut self, id: Id, object: Object)
+    {
+        self.objects.insert(id, object);
+    }
+
+    pub fn entry(&mut self, id: Id) -> StoreEntry<'_>
+    {
+        StoreEntry { inner: self.objects.entry(id) }
+    }
+}
+
+#[derive(Debug)]
+pub struct StoreEntry<'store>
+{
+    inner: HashMapEntry<'store, Id, Object>,
+}
+
+impl<'store> StoreEntry<'store>
+{
+    pub fn or_insert(self, default_obj: Object) -> &'store mut Object
+    {
+        self.inner.or_insert(default_obj)
+    }
+
+    pub fn or_insert_with(
+        self,
+        default_func: impl FnOnce() -> Object,
+    ) -> &'store mut Object
+    {
+        self.inner.or_insert_with(default_func)
+    }
+}
+
+/// Renderer object.
+#[derive(Debug, Clone)]
+pub struct Object
+{
+    raw: u32,
+    kind: Kind,
+}
+
+impl Object
+{
+    pub fn from_raw(raw: u32, kind: Kind) -> Self
+    {
+        Self { raw, kind }
+    }
+
+    pub fn as_raw(&self) -> u32
+    {
+        self.raw
+    }
+
+    pub fn kind(&self) -> Kind
+    {
+        self.kind
+    }
+}
+
+/// Renderer object kind.
+#[derive(Debug, Clone, Copy)]
+#[non_exhaustive]
+pub enum Kind
+{
+    Texture,
+    Mesh,
+}