Working on gamepads

Cargo.toml

@@ -23,4 +23,6 @@ features = [
   'HtmlImageElement',
   'Window',
   'Performance',
+  'Gamepad',
+  'GamepadEvent',
 ]

src/engine/character.rs

@@ -135,6 +135,11 @@ impl Character {
         &self.controls
     }
 
+    /// Changes the controls.
+    pub fn set_controls(&mut self, controls: Option<Controls>) {
+        self.controls = controls;
+    }
+
     /// Returns a view that looks at the character.
     pub fn view(&self) -> Bbox {
         Bbox::from_center_and_size(self.position, Vector::new(24.0 * 16.0, 24.0 * 9.0))

src/engine/controls.rs

@@ -16,6 +16,9 @@ pub enum Action {
 pub enum Controls {
     /// A keyboard controller.
     Keyboard(KeyboardMap),
+
+    /// A gamepad controller.
+    Gamepad(GamepadMap),
 }
 
 impl Controls {
@@ -24,15 +27,12 @@ impl Controls {
         Controls::Keyboard(KeyboardMap::default())
     }
 
-    // /// Returns the default gamepad controls from id.
-    // ///
-    // /// Returns None if the gamepad corresponding to the id is not connected.
-    // pub fn default_gamepad_from_id(id: u32) -> Option<Controls> {
-    //     match GamepadMap::from_id(id) {
-    //         Some(map) => Some(Controls::Gamepad(map)),
-    //         None => None,
-    //     }
-    // }
+    /// Returns the default gamepad controls from id.
+    ///
+    /// Returns None if the gamepad corresponding to the id is not connected.
+    pub fn default_gamepad(gamepad: web_sys::Gamepad) -> Controls {
+        Controls::Gamepad(GamepadMap::from_gamepad(gamepad))
+    }
 
     // /// Returns the default gamepad controls from id.
     // ///
@@ -48,7 +48,7 @@ impl Controls {
     pub fn convert(&self, event: &Event) -> Option<Action> {
         match self {
             Controls::Keyboard(ref map) => map.convert(event),
-            // Controls::Gamepad(ref map) => map.convert(event),
+            Controls::Gamepad(ref map) => map.convert(event),
         }
     }
 
@@ -56,7 +56,7 @@ impl Controls {
     pub fn direction(&self, keyboard: &Keyboard) -> Vector {
         match self {
             Controls::Keyboard(ref map) => map.direction(keyboard),
-            // Controls::Gamepad(ref map) => map.direction(),
+            Controls::Gamepad(ref map) => map.direction(),
         }
     }
 
@@ -120,3 +120,60 @@ impl KeyboardMap {
         ret
     }
 }
+
+/// A map between gamepad buttons and actions.
+#[derive(Clone)]
+pub struct GamepadMap {
+    /// Id of the gamepad.
+    inner: web_sys::Gamepad,
+
+    /// Number of the jump button.
+    jump_button: u32,
+
+    /// Number of the run button.
+    run_button: u32,
+    // /// Left / Right axis.
+    // left_right_axis: Axis,
+}
+
+impl GamepadMap {
+    /// Creates a gamepad map from a javascript gamepad.
+    pub fn from_gamepad(gamepad: web_sys::Gamepad) -> GamepadMap {
+        GamepadMap {
+            inner: gamepad,
+            jump_button: 0,
+            run_button: 3,
+        }
+    }
+
+    /// Converts an event and depending on the config, returns the corresponding action.
+    pub fn convert(&self, event: &Event) -> Option<Action> {
+        None
+        // match event {
+        //     Event::JoystickButtonPressed { joystickid, button }
+        //         if *joystickid == self.id && *button == self.jump_button =>
+        //     {
+        //         Some(Action::Jump(true))
+        //     }
+
+        //     Event::JoystickButtonReleased { joystickid, button }
+        //         if *joystickid == self.id && *button == self.jump_button =>
+        //     {
+        //         Some(Action::Jump(false))
+        //     }
+
+        //     _ => None,
+        // }
+    }
+
+    /// Returns the direction of the directionnal buttons of the gamepad.
+    pub fn direction(&self) -> Vector {
+        Vector::new(0.0, 0.0)
+        // Vector2::new(axis_position(self.id, self.left_right_axis) / 100.0, 0.0)
+    }
+
+    // /// Returns whether the run button is held down.
+    // pub fn is_running(&self) -> bool {
+    //     is_button_pressed(self.id, self.run_button)
+    // }
+}

src/engine/mod.rs

@@ -20,7 +20,7 @@ use wasm_bindgen::JsCast;
 
 use crate::engine::bbox::Bbox;
 use crate::engine::character::Character;
-use crate::engine::controls::Controls;
+use crate::engine::controls::{Controls, GamepadMap};
 use crate::engine::event::{Key, Keyboard};
 use crate::engine::map::Map;
 use crate::engine::math::now;
@@ -84,13 +84,24 @@ impl Engine {
 
         let inner = InnerEngine::new(&document, &performance, scene)?;
 
+        let inner = Rc::new(RefCell::new(inner));
         let window = Rc::new(window);
         let document = Rc::new(document);
         let performance = Rc::new(performance);
         let context = Rc::new(context);
 
+        let clone = inner.clone();
+        let cb = Closure::<dyn FnMut(_)>::new(move |event: web_sys::GamepadEvent| {
+            let mut inner = clone.borrow_mut();
+            inner.add_gamepad(&event);
+        });
+
+        (*window).add_event_listener_with_callback("gamepadconnected", cb.as_ref().unchecked_ref());
+
+        cb.forget();
+
         Ok(Engine {
-            inner: Rc::new(RefCell::new(inner)),
+            inner,
             window,
             document,
             performance,
@@ -146,7 +157,7 @@ impl Engine {
         let duration = unwrap!(now.duration_since(inner.after_loop).ok());
         inner.after_loop = now;
 
-        if (self.document.has_focus()?) {
+        if self.document.has_focus()? {
             // Manage events
             while let Some(event) = inner.keyboard.pop() {
                 inner.scene.manage_event(&event);
@@ -231,6 +242,9 @@ pub struct InnerEngine {
     /// The keyboard.
     pub keyboard: Keyboard,
 
+    /// The gamepads.
+    pub gamepads: Vec<GamepadMap>,
+
     /// The texture manager.
     pub textures: TextureManager,
 }
@@ -246,9 +260,20 @@ impl InnerEngine {
             scene,
             after_loop: now(&performance),
             keyboard: Keyboard::new(document)?,
+            gamepads: vec![],
             textures: TextureManager::new()?,
         })
     }
+
+    /// Adds a gamepad.
+    pub fn add_gamepad(&mut self, gamepad: &web_sys::GamepadEvent) {
+        let gamepad = GamepadMap::from_gamepad(gamepad.gamepad().unwrap());
+        let clone = gamepad.clone();
+        self.gamepads.push(clone);
+
+        let controlable = self.scene.controlable_mut().unwrap();
+        controlable.set_controls(Some(Controls::Gamepad(gamepad)));
+    }
 }
 
 /// Our custom drawable trait.

src/engine/scene.rs

@@ -55,6 +55,16 @@ impl Scene {
         None
     }
 
+    /// Returns the controlable.
+    pub fn controlable_mut(&mut self) -> Option<&mut Character> {
+        for character in &mut self.characters {
+            if character.controls().is_some() {
+                return Some(character);
+            }
+        }
+        None
+    }
+
     /// Returns the right view.
     pub fn view(&self) -> Option<Bbox> {
         let view = self.controlable()?.view();
@@ -109,7 +119,7 @@ impl Scene {
                         c.ground_collision();
                     }
 
-                    if (damage) {
+                    if damage {
                         c.die();
                         state = State::Finished;
                     }