1 files changed, 19 insertions, 0 deletions
diff --git a/engine/src/windowing/mouse.rs b/engine/src/windowing/mouse.rs
index f6087f4..3a43e79 100644
--- a/engine/src/windowing/mouse.rs
+++ b/engine/src/windowing/mouse.rs
@@ -106,6 +106,25 @@ pub enum Button
     Other(u16),
 }
 
+impl intmap::IntKey for Button
+{
+    type Int = u32;
+
+    const PRIME: Self::Int = <u32 as intmap::IntKey>::PRIME;
+
+    fn into_int(self) -> Self::Int
+    {
+        match &self {
+            Self::Left => 0,
+            Self::Right => 1,
+            Self::Middle => 2,
+            Self::Back => 3,
+            Self::Forward => 4,
+            Self::Other(other) => 5 + *other as u32,
+        }
+    }
+}
+
 impl From<winit::event::MouseButton> for Button
 {
     fn from(mouse_button: winit::event::MouseButton) -> Self