Initial work on menus

src/menus/input.rs

@@ -0,0 +1,65 @@
+use bevy::prelude::*;
+
+use crate::{game_settings::GameSettings, input::{LocalInputAssignments, LocalInputSource}};
+
+#[derive(Default)]
+pub struct MenuInput {
+    pub movement: Vec2,
+    pub accept: bool
+}
+
+impl MenuInput {
+
+    pub fn accumulate(&mut self, other: &Self) {
+        self.movement += other.movement;
+        self.movement = self.movement.normalize();
+        self.accept = self.accept || other.accept;
+    }
+
+    pub fn from_gamepad(gamepad: &Gamepad, game_settings: &GameSettings) -> Self {
+        let mut x = gamepad.left_stick().x;
+        let mut y = gamepad.left_stick().y;
+
+        let deadzone = game_settings.input_common.stick_deadzone.to_num::<f32>();
+
+        if x.abs() < deadzone {
+            x = 0.0;
+        }
+
+        if y.abs() < deadzone {
+            y = 0.0;
+        }
+
+        MenuInput {
+            movement: Vec2::new(x, y),
+            accept: gamepad.pressed(GamepadButton::South)
+        }
+    }
+    pub fn from_keyboard(keeb: &ButtonInput<KeyCode>) -> Self {
+        let x = if keeb.pressed(KeyCode::KeyA) { -1.0 } else { 0.0 };
+        let x = x + if keeb.pressed(KeyCode::KeyD) { 1.0 } else { 0.0 };
+        let y = if keeb.pressed(KeyCode::KeyS) { -1.0 } else { 0.0 };
+        let y = y + if keeb.pressed(KeyCode::KeyW) { 1.0 } else { 0.0 };
+
+        let movement = Vec2::new(x, y);
+        MenuInput {
+            movement: movement,
+            accept: keeb.pressed(KeyCode::Enter)
+        }
+    }
+
+    pub fn from_source(source: &LocalInputSource, key: &ButtonInput<KeyCode>, gamepads: &Query<(Entity, &Gamepad)>, assignments: &LocalInputAssignments, game_settings: &GameSettings) -> Self {
+        match source {
+            LocalInputSource::Keyboard => Self::from_keyboard(key),
+            LocalInputSource::Gamepad(entity) => {
+                let gamepad = gamepads.get(*entity);
+
+                if let Ok((_, gamepad)) = gamepad {
+                    Self::from_gamepad(gamepad, game_settings)
+                } else {
+                    Self::default()
+                }
+            },
+        }
+    }
+}