1 files changed, 44 insertions, 1 deletions
diff --git a/engine/src/util.rs b/engine/src/util.rs
index bd69734..688778b 100644
--- a/engine/src/util.rs
+++ b/engine/src/util.rs
@@ -1,4 +1,4 @@
-use std::fmt::Debug;
+use std::fmt::{Debug, Display};
 
 use crate::ecs::util::VecExt;
 
@@ -161,6 +161,49 @@ impl<T> OptionExt<T> for Option<T>
     }
 }
 
+pub struct DisplaySlice<'a, Item>
+{
+    slice: &'a [Item],
+}
+
+impl<'a, Item> DisplaySlice<'a, Item>
+{
+    pub fn new(slice: &'a [Item]) -> Self
+    {
+        Self { slice }
+    }
+}
+
+impl<Item> Display for DisplaySlice<'_, Item>
+where
+    Item: Display,
+{
+    fn fmt(&self, formatter: &mut std::fmt::Formatter<'_>) -> std::fmt::Result
+    {
+        let Some(first_item) = self.slice.first() else {
+            return formatter.write_str("<empty>");
+        };
+
+        write!(formatter, "{first_item}")?;
+
+        if self.slice.len() == 1 {
+            return Ok(());
+        }
+
+        for item in &self.slice[1..self.slice.len() - 1] {
+            write!(formatter, ", {item}")?;
+        }
+
+        let Some(last_item) = self.slice.last() else {
+            unreachable!();
+        };
+
+        write!(formatter, " & {last_item}")?;
+
+        Ok(())
+    }
+}
+
 macro_rules! try_option {
     ($expr: expr) => {
         match $expr {