feat(engine): add scroll delta to Mouse

1 files changed, 17 insertions, 0 deletions

diff --git a/engine/src/windowing/mouse.rs b/engine/src/windowing/mouse.rs
index 649036a..abe2ab7 100644
--- a/engine/src/windowing/mouse.rs
+++ b/engine/src/windowing/mouse.rs
@@ -17,6 +17,23 @@ pub struct Mouse
     /// Coordinates in pixels relative to the top-left corner of the window. May have
     /// been affected by cursor acceleration
     pub position: PhysicalPosition<f64>,
+
+    pub scroll_delta: ScrollDelta,
+}
+
+#[derive(Debug, Clone, Default)]
+pub struct ScrollDelta
+{
+    pub vert_lines: f32,
+    pub hor_lines: f32,
+}
+
+impl ScrollDelta
+{
+    pub fn is_zero(&self) -> bool
+    {
+        self.vert_lines == 0.0 && self.hor_lines == 0.0
+    }
 }
 
 /// Mouse buttons.