From d591fbe6938601e8b7961de2fab170e2ef0714f4 Mon Sep 17 00:00:00 2001
From: Thomas Forgione <thomas@forgione.fr>
Date: Tue, 2 Aug 2022 15:45:38 +0200
Subject: [PATCH] Work on keyboard controls

---
 src/engine/controls.rs | 10 ++++++++-
 src/engine/input.rs    | 51 +++++++++++++++++++++++++++++++++++++++++-
 src/engine/mod.rs      |  2 +-
 3 files changed, 60 insertions(+), 3 deletions(-)

diff --git a/src/engine/controls.rs b/src/engine/controls.rs
index d8b4129..46c1fbc 100644
--- a/src/engine/controls.rs
+++ b/src/engine/controls.rs
@@ -1,9 +1,12 @@
 //! This module helps to deal with controls.
 
-use crate::engine::input::{Action, Event};
+use crate::engine::input::{Action, Button, Event, Key};
 
 /// The different types of controls.
 pub enum Controls {
+    /// Default keyboard controls.
+    Keyboard,
+
     /// A gamepad controls the scene.
     Gamepad(u32),
 }
@@ -12,6 +15,11 @@ impl Controls {
     /// Converts an event into an action if it corresponds to an action.
     pub fn convert(&self, event: Event) -> Option<Action> {
         match self {
+            Controls::Keyboard => match event {
+                Event::KeyPressed(Key::Space) => Some(Action::ButtonPressed(Button::Button1)),
+                Event::KeyReleased(Key::Space) => Some(Action::ButtonReleased(Button::Button1)),
+                _ => None,
+            },
             Controls::Gamepad(ig) => match event {
                 Event::ButtonPressed(ie, button) if *ig == ie => {
                     Some(Action::ButtonPressed(button))
diff --git a/src/engine/input.rs b/src/engine/input.rs
index 3eb25f3..198d304 100644
--- a/src/engine/input.rs
+++ b/src/engine/input.rs
@@ -12,6 +12,12 @@ use crate::{log, Result};
 /// The different events that can be triggered.
 #[derive(Debug, Copy, Clone)]
 pub enum Event {
+    /// A key has been pressed.
+    KeyPressed(Key),
+
+    /// A key has been released.
+    KeyReleased(Key),
+
     /// A gamepad has been connected.
     GamepadConnected(u32),
 
@@ -22,6 +28,13 @@ pub enum Event {
     ButtonReleased(u32, Button),
 }
 
+/// The different keyboard keys we support.
+#[derive(Debug, Copy, Clone)]
+pub enum Key {
+    /// The space key.
+    Space,
+}
+
 /// The different actions a user can do.
 #[derive(Debug, Copy, Clone)]
 pub enum Action {
@@ -78,6 +91,28 @@ impl InputManager {
         }
     }
 
+    /// Parses a keyboard event to the key.
+    pub fn key(event: web_sys::KeyboardEvent) -> Option<Key> {
+        match event.code().as_str() {
+            "Space" => Some(Key::Space),
+            _ => None,
+        }
+    }
+
+    /// Adds a key pressed event to the list of events.
+    pub fn key_pressed_event(&mut self, event: web_sys::KeyboardEvent) {
+        if let Some(key) = InputManager::key(event) {
+            self.events.push_back(Event::KeyPressed(key));
+        }
+    }
+
+    /// Adds a key released event to the list of events.
+    pub fn key_released_event(&mut self, event: web_sys::KeyboardEvent) {
+        if let Some(key) = InputManager::key(event) {
+            self.events.push_back(Event::KeyReleased(key));
+        }
+    }
+
     /// Adds a gamepad to the input manager.
     pub fn add_gamepad(&mut self, gamepad: web_sys::Gamepad) {
         log!("Gamepad added {}", gamepad.id());
@@ -176,9 +211,23 @@ impl Inputs {
             let mut inner = clone.0.borrow_mut();
             inner.add_gamepad(event.gamepad().unwrap());
         });
-
         window.add_event_listener_with_callback("gamepadconnected", cb.as_ref().unchecked_ref())?;
+        cb.forget();
 
+        let clone = inputs.clone();
+        let cb = Closure::<dyn FnMut(_)>::new(move |event: web_sys::KeyboardEvent| {
+            let mut inner = clone.0.borrow_mut();
+            inner.key_pressed_event(event);
+        });
+        window.add_event_listener_with_callback("keydown", cb.as_ref().unchecked_ref())?;
+        cb.forget();
+
+        let clone = inputs.clone();
+        let cb = Closure::<dyn FnMut(_)>::new(move |event: web_sys::KeyboardEvent| {
+            let mut inner = clone.0.borrow_mut();
+            inner.key_released_event(event);
+        });
+        window.add_event_listener_with_callback("keyup", cb.as_ref().unchecked_ref())?;
         cb.forget();
 
         Ok(inputs)
diff --git a/src/engine/mod.rs b/src/engine/mod.rs
index 859bf2b..0aed3e0 100644
--- a/src/engine/mod.rs
+++ b/src/engine/mod.rs
@@ -162,7 +162,7 @@ impl Engine {
         let map = Map::from_str(include_str!("../../static/levels/level1.lvl")).unwrap();
         let mut scene = Scene::from_map(map);
 
-        let character = Character::new();
+        let character = Character::with_controls(Controls::Keyboard);
         scene.add(character);
 
         Ok(Engine {