Add axis 2D event for gamepad events

lighthouse-protocol/src/input/gamepad_axis_2d_event.rs

@@ -0,0 +1,13 @@
+use serde::{Deserialize, Serialize};
+
+use crate::Vec2;
+
+/// A 2D axis event on a gamepad.
+#[derive(Debug, Serialize, Deserialize, PartialEq, Clone)]
+#[serde(tag = "control", rename_all = "camelCase")]
+pub struct GamepadAxis2DEvent {
+    /// The 2D axes index (0 is the left stick, 1 is the right stick).
+    pub index: usize,
+    /// The value of the axis (each component is between -1.0 and 1.0, modeled after the Web Gamepad API).
+    pub value: Vec2<f64>,
+}

lighthouse-protocol/src/input/gamepad_axis_event.rs

@@ -1,10 +1,10 @@
 use serde::{Deserialize, Serialize};
 
-/// An axis event on a gamepad.
+/// A 1D axis event on a gamepad.
 #[derive(Debug, Serialize, Deserialize, PartialEq, Clone)]
 #[serde(tag = "control", rename_all = "camelCase")]
 pub struct GamepadAxisEvent {
-    /// The axis index.
+    /// The 1D axis index.
     pub index: usize,
     /// The value of the axis (between -1.0 and 1.0, modeled after the Web Gamepad API).
     pub value: f64,

lighthouse-protocol/src/input/gamepad_control_event.rs

@@ -1,11 +1,13 @@
 use serde::{Deserialize, Serialize};
 
-use super::{GamepadAxisEvent, GamepadButtonEvent};
+use super::{GamepadAxis2DEvent, GamepadAxisEvent, GamepadButtonEvent};
 
 /// A control-specific event on a gamepad.
 #[derive(Debug, Serialize, Deserialize, PartialEq, Clone)]
 #[serde(tag = "control", rename_all = "camelCase")]
 pub enum GamepadControlEvent {
     Button(GamepadButtonEvent),
     Axis(GamepadAxisEvent),
+    #[serde(rename = "axis2d")]
+    Axis2D(GamepadAxis2DEvent),
 }

lighthouse-protocol/src/input/input_event.rs

@@ -15,7 +15,7 @@ pub enum InputEvent {
 mod tests {
     use serde_json::json;
 
-    use crate::{EventSource, GamepadAxisEvent, GamepadButtonEvent, GamepadControlEvent, GamepadEvent, InputEvent, KeyEvent, KeyModifiers, MouseButton, MouseEvent, Pos};
+    use crate::{EventSource, GamepadAxis2DEvent, GamepadAxisEvent, GamepadButtonEvent, GamepadControlEvent, GamepadEvent, InputEvent, KeyEvent, KeyModifiers, MouseButton, MouseEvent, Pos, Vec2};
 
     #[test]
     fn key_event() {
@@ -104,4 +104,27 @@ mod tests {
             })
         );
     }
+
+    #[test]
+    fn gamepad_axis_2d_event() {
+        assert_eq!(
+            serde_json::from_value::<InputEvent>(json!({
+                "type": "gamepad",
+                "source": 1,
+                "control": "axis2d",
+                "index": 42,
+                "value": {
+                    "x": 0.2,
+                    "y": -0.2,
+                },
+            })).unwrap(),
+            InputEvent::Gamepad(GamepadEvent {
+                source: EventSource::Int(1),
+                control: GamepadControlEvent::Axis2D(GamepadAxis2DEvent {
+                    index: 42,
+                    value: Vec2::new(0.2, -0.2),
+                }),
+            })
+        );
+    }
 }

lighthouse-protocol/src/input/mod.rs

@@ -1,4 +1,5 @@
 mod event_source;
+mod gamepad_axis_2d_event;
 mod gamepad_axis_event;
 mod gamepad_button_event;
 mod gamepad_control_event;
@@ -11,6 +12,7 @@ mod mouse_button;
 mod mouse_event;
 
 pub use event_source::*;
+pub use gamepad_axis_2d_event::*;
 pub use gamepad_axis_event::*;
 pub use gamepad_button_event::*;
 pub use gamepad_control_event::*;