From 3a87f915ecf579550fca181b7d2f484b06f28fdb Mon Sep 17 00:00:00 2001
From: Tei Roberts <ten3roberts@gmail.com>
Date: Tue, 12 Sep 2023 23:49:56 +0200
Subject: [PATCH] fix: implement RandomFetch for entity ids

---
 src/filter/constant.rs | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/filter/constant.rs b/src/filter/constant.rs
index 84acb41..6281a2e 100644
--- a/src/filter/constant.rs
+++ b/src/filter/constant.rs
@@ -1,6 +1,6 @@
 use crate::{
     archetype::{Slice, Slot},
-    fetch::{FetchAccessData, FetchPrepareData, PreparedFetch},
+    fetch::{FetchAccessData, FetchPrepareData, PreparedFetch, RandomFetch},
     system::Access,
     Entity, Fetch, FetchItem,
 };
@@ -149,6 +149,16 @@ pub struct PreparedEntity {
     id: Entity,
 }
 
+impl<'q> RandomFetch<'q> for PreparedEntity {
+    unsafe fn fetch_shared(&'q self, _: Slot) -> Self::Item {
+        self.id
+    }
+
+    unsafe fn fetch_shared_chunk(chunk: &Self::Chunk, _: Slot) -> Self::Item {
+        *chunk
+    }
+}
+
 impl<'w> PreparedFetch<'w> for PreparedEntity {
     type Item = Entity;