Added an extra starting state so the player doesn't start moving instantly

src/hud.rs

@@ -1,6 +1,6 @@
 use bevy::{asset::AssetPath, prelude::*};
 
-use crate::{player::Player, score::Score, GameState, START_POSITION};
+use crate::{common::velocity::Velocity, player::Player, score::Score, GameState, START_POSITION};
 
 pub struct HUDPlugin;
 
@@ -122,7 +122,7 @@ fn start_button_logic(
 	mut score: ResMut<Score>,
 	gamepads: Query<&Gamepad>,
 	mut button: Query<(&Interaction, &mut BorderColor), With<StartButton>>,
-	mut player_query: Query<(&mut Transform, &mut Visibility), With<Player>>,
+	mut player_query: Query<(&mut Transform, &mut Visibility, &mut Velocity), With<Player>>,
 	mut ui_elems_query: Query<&mut Visibility, (With<StartMenuUI>, Without<Player>)>,
 	mut score_text_query: Query<&mut Text, With<ScoreText>>,
 ) {
@@ -131,7 +131,8 @@ fn start_button_logic(
 	};
 
 	let mut score_text = score_text_query.single_mut();
-	let (mut player_transform, mut player_visibility) = player_query.single_mut();
+	let (mut player_transform, mut player_visibility, mut player_velocity) =
+		player_query.single_mut();
 
 	let gamepad = gamepads.get_single();
 
@@ -144,6 +145,7 @@ fn start_button_logic(
 				&mut ui_elems_query,
 				&mut player_visibility,
 				&mut player_transform,
+				&mut player_velocity,
 			);
 			return;
 		}
@@ -160,6 +162,7 @@ fn start_button_logic(
 				&mut ui_elems_query,
 				&mut player_visibility,
 				&mut player_transform,
+				&mut player_velocity,
 			);
 		}
 		Interaction::Hovered => border_color.0 = Color::WHITE,
@@ -174,11 +177,12 @@ fn start_game(
 	ui_elems: &mut Query<&mut Visibility, (With<StartMenuUI>, Without<Player>)>,
 	player_visibility: &mut Visibility,
 	player_transform: &mut Transform,
+	player_velocity: &mut Velocity,
 ) {
 	score.0 = 0;
 	score_text.0 = format!("{}", score.0);
 
-	state.set(GameState::Playing);
+	state.set(GameState::Starting);
 
 	for mut elem in ui_elems {
 		*elem = Visibility::Hidden;
@@ -186,4 +190,6 @@ fn start_game(
 
 	*player_visibility = Visibility::Visible;
 	player_transform.translation = START_POSITION;
+	player_transform.rotation = Quat::from_rotation_x(0.0);
+	*player_velocity = Velocity(Vec2::ZERO);
 }

src/level.rs

@@ -1,4 +1,4 @@
-use std::f32::consts::PI;
+use std::{f32::consts::PI, time::Duration};
 
 use bevy::{
 	math::bounding::{Aabb2d, BoundingCircle, IntersectsVolume},
@@ -31,8 +31,13 @@ impl Plugin for LevelPlugin {
 		app.add_plugins(AnimationPlugin);
 		app.add_plugins(PathFollow2DPlugin);
 		app.insert_resource(SpawnTimer(Timer::from_seconds(0.5, TimerMode::Repeating)));
+		app.insert_resource(StartTimer(Timer::from_seconds(0.5, TimerMode::Once)));
 		app.add_systems(Startup, setup);
 		app.add_systems(Update, (debug_gizmos, debug_gizmos_config));
+		app.add_systems(
+			FixedUpdate,
+			(start_countdown).run_if(in_state(GameState::Starting)),
+		);
 		app.add_systems(
 			FixedUpdate,
 			(spawn_enemy, check_for_collisions, game_over).run_if(in_state(GameState::Playing)),
@@ -56,6 +61,9 @@ fn setup(mut commands: Commands) {
 #[derive(Resource, Deref, DerefMut)]
 struct SpawnTimer(Timer);
 
+#[derive(Resource, Deref, DerefMut)]
+struct StartTimer(Timer);
+
 #[derive(Component, Default)]
 #[require(Sprite, Velocity, Collider)]
 pub struct Unit;
@@ -66,6 +74,19 @@ pub struct Collider;
 #[derive(Event, Default)]
 pub struct CollisionEvent;
 
+fn start_countdown(
+	time: Res<Time>,
+	mut timer: ResMut<StartTimer>,
+	mut state: ResMut<NextState<GameState>>,
+) {
+	timer.tick(time.delta());
+
+	if timer.finished() {
+		state.set(GameState::Playing);
+		timer.reset();
+	}
+}
+
 fn spawn_enemy(
 	mut commands: Commands,
 	asset_server: Res<AssetServer>,

src/lib.rs

@@ -24,6 +24,7 @@ pub const START_POSITION: Vec3 =
 pub enum GameState {
 	#[default]
 	Menu,
+	Starting,
 	Playing,
 	GameOver,
 }