From 42c0f017348ef2033b6889b272f31f0c5eb5d41d Mon Sep 17 00:00:00 2001
From: Tom Barrett <tom@tombarrett.xyz>
Date: Sun, 21 Mar 2021 17:16:19 +0100
Subject: added twinkling stars

---
 src/main.rs | 44 +++++++++++++++++++++++++++++++++++++-------
 1 file changed, 37 insertions(+), 7 deletions(-)

(limited to 'src/main.rs')

diff --git a/src/main.rs b/src/main.rs
index 5577a11..bab21a0 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -3,7 +3,7 @@ use bevy::prelude::*;
 use gems::constants;
 use rand::{
     distributions::{Distribution, Standard},
-    Rng,
+    thread_rng, Rng,
 };
 
 #[derive(Debug, PartialEq, Clone, Copy)]
@@ -177,6 +177,33 @@ fn cell_check_system(mut cell_query: Query<(&mut Cell, &mut TextureAtlasSprite)>
     }
 }
 
+fn star_spawning_system(commands: &mut Commands, time: Res<Time>, mut q: Query<&mut Timer>) {
+    for mut timer in q.iter_mut() {
+        if !timer.repeating() {
+            timer.tick(time.delta_seconds());
+            if timer.just_finished() {
+                timer.set_duration(thread_rng().gen_range(2..5) as f32);
+                timer.reset();
+                commands
+                    .spawn(SpriteSheetBundle {
+                        sprite: TextureAtlasSprite::new(16),
+                        transform: Transform {
+                            translation: Vec3 {
+                                x: thread_rng().gen_range(-300..300) as f32,
+                                y: thread_rng().gen_range(-200..300) as f32,
+                                z: 0.0,
+                            },
+                            scale: Vec3::splat(thread_rng().gen_range(1..3) as f32),
+                            ..Default::default()
+                        },
+                        ..Default::default()
+                    })
+                    .with(Timer::from_seconds(0.25, true));
+            }
+        }
+    }
+}
+
 fn cell_falling_system(mut cell_query: Query<(&mut Cell, &mut TextureAtlasSprite)>) {
     let mut have_gems = Vec::new();
     for (cell, _sprite) in cell_query.iter_mut() {
@@ -216,7 +243,7 @@ pub fn setup(
     let background = asset_server.load("background.png");
     let tileset = asset_server.load("tileset.png");
 
-    let atlas = TextureAtlas::from_grid(tileset, Vec2::new(16.0, 16.0), 4, 4);
+    let atlas = TextureAtlas::from_grid(tileset, Vec2::new(16.0, 16.0), 4, 5);
     let atlas_handle = texture_atlases.add(atlas);
 
     commands
@@ -248,6 +275,7 @@ pub fn setup(
             },
             ..Default::default()
         })
+        .spawn((Timer::from_seconds(1.0, false),))
         .spawn(SpriteSheetBundle {
             sprite: TextureAtlasSprite::new(12),
             texture_atlas: atlas_handle.clone(),
@@ -273,7 +301,7 @@ pub fn setup(
                         translation: Vec3 {
                             x: ((i as f32) * 16.0 * 3.5) - 320.0,
                             y: ((j as f32) * 16.0 * 3.5) - 160.0,
-                            z: 0.0,
+                            z: 1.0,
                         },
                         scale: Vec3::splat(3.5),
                         ..Default::default()
@@ -285,7 +313,7 @@ pub fn setup(
     }
 }
 
-fn cosmonaut_animation_system(
+fn animation_system(
     commands: &mut Commands,
     time: Res<Time>,
     mut cell_query: Query<(Entity, &mut Timer, &mut TextureAtlasSprite), Without<Cell>>,
@@ -298,12 +326,13 @@ fn cosmonaut_animation_system(
                 10 => 13,
                 13 => 14,
                 11 => 12,
+                16 => 17,
+                17 => 18,
                 _ => 11,
             };
             sprite.index = index;
             if index == 12 {
-                commands.remove_one::<Timer>(entity);
-                commands.remove_one::<TextureAtlasSprite>(entity);
+                commands.despawn(entity);
             }
         }
     }
@@ -421,7 +450,8 @@ impl Plugin for GemsPlugin {
         app.add_system(explosion_animation_system.system());
         app.add_system(mouse_system.system());
         app.add_system(cosmonaut_detect_system.system());
-        app.add_system(cosmonaut_animation_system.system());
+        app.add_system(animation_system.system());
+        app.add_system(star_spawning_system.system());
     }
 }
 
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