1 files changed, 56 insertions, 0 deletions
diff --git a/games/rstnode/rst-client/src/input.rs b/games/rstnode/rst-client/src/input.rs
new file mode 100644
index 000000000000..4e901b8ade06
--- /dev/null
+++ b/games/rstnode/rst-client/src/input.rs
@@ -0,0 +1,56 @@
+//! Advanced input handler
+
+use ggez::{
+    event::EventHandler,
+    input::mouse::{self, MouseButton},
+    Context, GameResult,
+};
+use mint::Point2;
+
+pub struct InputHandle {
+    /// The mouse position on the viewport
+    pub mouse_pos: Point2<f32>,
+    /// Whether the left mouse button is pressed this frame
+    pub left_pressed: bool,
+    /// Whether the right mouse button is pressed this frame
+    pub right_pressed: bool,
+    /// Set when pressing left mouse and unset when releasing it
+    pub drag_point: Option<Point2<f32>>,
+}
+
+impl InputHandle {
+    pub fn new() -> Self {
+        Self {
+            mouse_pos: [0.0, 0.0].into(),
+            left_pressed: false,
+            right_pressed: false,
+            drag_point: None,
+        }
+    }
+
+    /// Get the unprojected mouse coordinates
+    pub fn unproject(&self) -> Point2<f32> {
+        self.mouse_pos.clone();
+        todo!()
+    }
+}
+
+impl EventHandler for InputHandle {
+    fn update(&mut self, ctx: &mut Context) -> GameResult<()> {
+        self.mouse_pos = mouse::position(&ctx);
+        self.left_pressed = mouse::button_pressed(ctx, MouseButton::Left);
+        self.right_pressed = mouse::button_pressed(ctx, MouseButton::Right);
+
+        // Only set the drag_point once and unset when we release Left button
+        if self.left_pressed && self.drag_point.is_none() {
+            self.drag_point = Some(self.mouse_pos.clone());
+        } else if !self.left_pressed {
+            self.drag_point = None;
+        }
+
+        Ok(())
+    }
+    fn draw(&mut self, _: &mut Context) -> GameResult<()> {
+        panic!("Don't draw the input handle!");
+    }
+}