✨ castles

Author: fabienjuif

src/castles.rs

@@ -0,0 +1,101 @@
+use bevy::{
+    prelude::*,
+    sprite::{Sprite, SpriteBundle},
+    time::{Timer, TimerMode},
+};
+use bevy_rapier2d::prelude::*;
+
+use crate::{
+    common::Rewards,
+    health::Health,
+    racks::Rack,
+    teams::{Team, Teams},
+};
+
+// TODO: Castle is a rack two...
+// TODO: So maybe having a common "minion spawner" rather than "rack" is better?
+
+#[derive(Bundle)]
+pub struct CastleBundle {
+    pub sprite_bundle: SpriteBundle,
+    pub team: Team,
+    pub rack: Rack,
+    pub health: Health,
+    pub rewards: Rewards,
+    pub rigid_body: RigidBody,
+    pub collider: Collider,
+    pub events: ActiveEvents,
+    pub mass: ColliderMassProperties,
+}
+
+impl CastleBundle {
+    pub fn new(team: Team, transform: Transform) -> Self {
+        let size = Vec2::new(80.0, 80.0);
+        CastleBundle {
+            sprite_bundle: SpriteBundle {
+                sprite: Sprite {
+                    color: team.color,
+                    custom_size: Some(size),
+                    ..default()
+                },
+                transform,
+                ..default()
+            },
+            team,
+            rack: Rack {
+                minion_spawning: false,
+                minion_spawned_count: 0,
+                minion_spawn_count: 5,
+                minion_spawn_timer: Timer::from_seconds(3., TimerMode::Repeating),
+                minion_spawn_timer_q: Timer::from_seconds(0.2, TimerMode::Repeating),
+            },
+            health: Health::new(300.)
+                .with_health_bar_position(Vec3::new(0.0, 50.0, 0.0))
+                .with_health_bar_size(Vec2::new(size.x, 5.)),
+            rewards: Rewards { gold: 500. },
+            rigid_body: RigidBody::Dynamic,
+            collider: Collider::cuboid(size.x / 2., size.y / 2.),
+            events: ActiveEvents::COLLISION_EVENTS,
+            mass: ColliderMassProperties::Mass(0.),
+        }
+    }
+}
+
+pub struct CastlesPlugin;
+
+impl Plugin for CastlesPlugin {
+    fn build(&self, app: &mut App) {
+        app.add_systems(Startup, setup)
+            .add_systems(PostUpdate, destroy);
+    }
+}
+
+fn setup(mut commands: Commands, teams: Res<Teams>) {
+    commands.spawn(CastleBundle::new(
+        teams.get_expect("a".into()),
+        Transform::from_xyz(-200.0, -300.0, 0.),
+    ));
+    commands.spawn(CastleBundle::new(
+        teams.get_expect("b".into()),
+        Transform::from_xyz(300.0, 300.0, 0.),
+    ));
+    commands.spawn(CastleBundle::new(
+        teams.get_expect("c".into()),
+        Transform::from_xyz(200.0, -200.0, 0.),
+    ));
+}
+
+// TODO: maybe this system can be retrieve from health bar crate (give the type and insert it in the filter?)
+fn destroy(mut commands: Commands, mut query: Query<(&Health, Entity), With<Rack>>) {
+    let mut kill = |entity| {
+        trace!("Unspawning Minion: {:?}", entity);
+        commands.entity(entity).despawn_recursive();
+    };
+
+    for (health, entity) in &mut query {
+        // just not enough health
+        if health.is_dead() {
+            kill(entity);
+        }
+    }
+}

src/main.rs

@@ -1,3 +1,4 @@
+mod castles;
 mod common;
 mod health;
 mod minions;
@@ -11,6 +12,7 @@ use bevy::{
     DefaultPlugins,
 };
 use bevy_rapier2d::prelude::*;
+use castles::CastlesPlugin;
 use health::HealthPlugin;
 use minions::MinionsPlugin;
 use player::LocalPlayerPlugin;
@@ -32,6 +34,7 @@ fn main() {
         TeamsPlugin,
         MinionsPlugin,
         RacksPlugin,
+        CastlesPlugin,
         HealthPlugin,
         LocalPlayerPlugin,
     ))

src/minions.rs

@@ -6,7 +6,6 @@ use bevy::{
     utils::{default, HashMap},
 };
 use bevy_rapier2d::prelude::*;
-use rand::Rng;
 
 const MINION_SCALE: f32 = 100.;
 const DESTROY_MINIONS_AFTER_SECS: f32 = 120.;
@@ -30,46 +29,51 @@ impl Plugin for MinionsPlugin {
     }
 }
 
-pub fn spawn_minion(commands: &mut Commands, transform: &Transform, team: Team) {
-    let mut rng = rand::thread_rng();
+#[derive(Bundle)]
+pub struct MinionBundle {
+    minion: Minion,
+    sprite: SpriteBundle,
+    health: Health,
+    rewards: Rewards,
+    team: Team,
+
+    // physics
+    body: RigidBody,
+    collider: Collider,
+    events: ActiveEvents,
+}
 
-    let entity = commands
-        .spawn((
-            SpriteBundle {
+impl MinionBundle {
+    pub fn new(translation: Vec3, team: Team) -> Self {
+        MinionBundle {
+            sprite: SpriteBundle {
                 sprite: Sprite {
                     color: team.color,
                     custom_size: Some(Vec2::new(10.0, 10.0)),
                     ..default()
                 },
-                transform: Transform::from_xyz(
-                    transform.translation.x + rng.gen_range(-40.0..40.0),
-                    transform.translation.y + rng.gen_range(-40.0..40.0),
-                    0.0,
-                ),
+                transform: Transform::from_translation(translation),
                 ..default()
             },
-            RigidBody::Dynamic,
-            Collider::cuboid(5.0, 5.),
-            ActiveEvents::COLLISION_EVENTS,
-            // Restitution::coefficient(2.),
-            // Friction::coefficient(2.),
-            Minion {
+            minion: Minion {
                 // to avoid leaks
                 // maybe a better option on top of that is to leach health every seconds on minions and make them die!
                 destroy_timer: Timer::from_seconds(
                     DESTROY_MINIONS_AFTER_SECS,
                     bevy::time::TimerMode::Once,
                 ),
             },
-            Health::new(20.)
+            health: Health::new(20.)
                 .with_health_bar_position(Vec3::new(0.0, 15.0, 0.1))
                 .with_health_bar_size(Vec2::new(10.0, 5.0)),
-            Rewards { gold: REWARDS_GOLD },
+            rewards: Rewards { gold: REWARDS_GOLD },
             team,
-        ))
-        .id();
-
-    trace!("Spawning Minion: {:?}", entity);
+            // physics
+            body: RigidBody::Dynamic,
+            collider: Collider::cuboid(5.0, 5.),
+            events: ActiveEvents::COLLISION_EVENTS,
+        }
+    }
 }
 
 fn update_move_minions(

src/racks.rs

@@ -8,18 +8,21 @@ use bevy_rapier2d::prelude::*;
 use crate::{
     common::Rewards,
     health::Health,
+    minions::MinionBundle,
     teams::{Team, Teams},
 };
 
+use rand::Rng;
+
 pub const RACK_GOLD_VALUE: f32 = 10.;
 
 #[derive(Component)]
 pub struct Rack {
-    minion_spawn_timer: Timer,
-    minion_spawn_timer_q: Timer,
-    minion_spawn_count: u32,
-    minion_spawned_count: u32,
-    minion_spawning: bool,
+    pub minion_spawn_timer: Timer,
+    pub minion_spawn_timer_q: Timer,
+    pub minion_spawn_count: u32,
+    pub minion_spawned_count: u32,
+    pub minion_spawning: bool,
 }
 
 #[derive(Bundle)]
@@ -96,9 +99,11 @@ fn setup(mut commands: Commands, teams: Res<Teams>) {
 fn spawn_minions(
     mut commands: Commands,
     time: Res<Time>,
-    mut query: Query<(&mut Rack, &Transform, &Team)>,
+    mut query: Query<(&mut Rack, &Collider, &Transform, &Team)>,
 ) {
-    for (mut rack, transform, team) in &mut query {
+    let mut rng: rand::rngs::ThreadRng = rand::thread_rng();
+
+    for (mut rack, collider, transform, team) in &mut query {
         // ticks timers
         rack.minion_spawn_timer_q.tick(time.delta());
         rack.minion_spawn_timer.tick(time.delta());
@@ -116,12 +121,32 @@ fn spawn_minions(
             && rack.minion_spawn_timer_q.just_finished()
             && rack.minion_spawned_count < rack.minion_spawn_count
         {
-            crate::minions::spawn_minion(&mut commands, transform, team.clone());
-            rack.minion_spawned_count += 1;
+            // TODO: should RNG an angle instead
+            if let Some(cuboid) = collider.as_cuboid() {
+                let mut offset_x = cuboid.half_extents().x + rng.gen_range(2.0..10.0);
+                let mut offset_y = cuboid.half_extents().y + rng.gen_range(2.0..10.0);
+
+                if rng.gen_bool(0.5) {
+                    offset_x *= -1.;
+                }
+                if rng.gen_bool(0.5) {
+                    offset_y *= -1.;
+                }
+
+                commands.spawn(MinionBundle::new(
+                    Vec3::new(
+                        transform.translation.x + offset_x,
+                        transform.translation.y + offset_y,
+                        transform.translation.z,
+                    ),
+                    team.clone(),
+                ));
+                rack.minion_spawned_count += 1;
 
-            if rack.minion_spawned_count >= rack.minion_spawn_count {
-                debug!("[rack] every minions are spawned!");
-                rack.minion_spawning = false;
+                if rack.minion_spawned_count >= rack.minion_spawn_count {
+                    debug!("[rack] every minions are spawned!");
+                    rack.minion_spawning = false;
+                }
             }
         }
     }