implement default colors

src/beatmap.rs

@@ -1,3 +1,4 @@
+use ggez::graphics::Color;
 use libosu::{beatmap::Beatmap, hitobject::HitObjectKind, math::Point};
 
 use crate::hitobject::HitObjectExt;
@@ -21,13 +22,13 @@ impl BeatmapExt {
         BeatmapExt { inner, hit_objects }
     }
 
-    pub fn compute_colors(&mut self) {
+    pub fn compute_colors(&mut self, colors: &[Color]) {
         let mut color_idx = 0;
         let mut number = 1;
         for ho in self.hit_objects.iter_mut() {
             if ho.inner.new_combo {
                 number = 1;
-                color_idx = (color_idx + 1) % self.inner.colors.len();
+                color_idx = (color_idx + 1) % colors.len();
             }
 
             ho.number = number;
@@ -37,7 +38,9 @@ impl BeatmapExt {
     }
 
     pub fn compute_stacking(&mut self) {
-        self.compute_stacking_inner(0, self.hit_objects.len() - 1)
+        if self.inner.stack_leniency > 0.0 {
+            self.compute_stacking_inner(0, self.hit_objects.len() - 1)
+        }
     }
 
     fn compute_stacking_inner(&mut self, start_idx: usize, end_idx: usize) {

src/game/mod.rs

@@ -28,6 +28,12 @@ use crate::hitobject::HitObjectExt;
 use crate::skin::Skin;
 
 pub const PLAYFIELD_BOUNDS: Rect = Rect::new(112.0, 122.0, 800.0, 600.0);
+pub const DEFAULT_COLORS: &[(f32, f32, f32)] = &[
+    (1.0, 0.75, 0.0),
+    (0.0, 0.8, 0.0),
+    (0.07, 0.5, 1.0),
+    (0.95, 0.1, 0.22),
+];
 
 pub type SliderCache = HashMap<Vec<Point<i32>>, Spline>;
 
@@ -39,6 +45,7 @@ pub struct Game {
     pub skin: Skin,
     frame: usize,
     slider_cache: SliderCache,
+    combo_colors: Vec<Color>,
 
     keymap: HashSet<KeyCode>,
     current_uninherited_timing_point: Option<TimingPoint>,
@@ -61,6 +68,10 @@ impl Game {
             skin,
             frame: 0,
             slider_cache: SliderCache::default(),
+            combo_colors: DEFAULT_COLORS
+                .iter()
+                .map(|(r, g, b)| Color::new(*r, *g, *b, 1.0))
+                .collect(),
 
             keymap: HashSet::new(),
             current_uninherited_timing_point: None,
@@ -77,9 +88,32 @@ impl Game {
 
         let beatmap = Beatmap::from_osz(&contents)?;
         self.beatmap = BeatmapExt::new(beatmap);
-        self.beatmap.compute_colors();
         self.beatmap.compute_stacking();
 
+        if self.beatmap.inner.colors.len() > 0 {
+            self.combo_colors.clear();
+            self.combo_colors = self
+                .beatmap
+                .inner
+                .colors
+                .iter()
+                .map(|color| {
+                    Color::new(
+                        color.red as f32 / 255.0,
+                        color.green as f32 / 255.0,
+                        color.blue as f32 / 255.0,
+                        1.0,
+                    )
+                })
+                .collect();
+        } else {
+            self.combo_colors = DEFAULT_COLORS
+                .iter()
+                .map(|(r, g, b)| Color::new(*r, *g, *b, 1.0))
+                .collect();
+        }
+        self.beatmap.compute_colors(&self.combo_colors);
+
         let dir = path.parent().unwrap();
 
         let song = Sound::create(dir.join(&self.beatmap.inner.audio_filename))?;
@@ -134,13 +168,7 @@ impl Game {
         // keeping track of the old index will probably be much faster
         for ho in self.beatmap.hit_objects.iter().rev() {
             let ho_time = (ho.inner.start_time.0 as f64) / 1000.0;
-            let color = self.beatmap.inner.colors[ho.color_idx];
-            let color = graphics::Color::new(
-                color.red as f32 / 256.0,
-                color.green as f32 / 256.0,
-                color.blue as f32 / 256.0,
-                1.0,
-            );
+            let color = self.combo_colors[ho.color_idx];
 
             // draw in timeline
             self.draw_hitobject_to_timeline(ctx, time, ho)?;

src/game/seeker.rs

@@ -29,8 +29,8 @@ impl Game {
 
             for timing_point in self.beatmap.inner.timing_points.iter() {
                 let color = match timing_point.kind {
-                    TimingPointKind::Inherited(_) => Color::new(0.0, 1.0, 0.0, 0.5),
-                    TimingPointKind::Uninherited(_) => Color::new(1.0, 0.0, 0.0, 0.5),
+                    TimingPointKind::Inherited(_) => Color::new(0.0, 0.8, 0.0, 0.5),
+                    TimingPointKind::Uninherited(_) => Color::new(0.8, 0.0, 0.0, 0.5),
                 };
 
                 let percent = timing_point.time.as_seconds() / len;

src/game/timeline.rs

@@ -157,13 +157,7 @@ impl Game {
             .get_hitobject_end_time(&ho.inner)
             .as_seconds();
 
-        let color = self.beatmap.inner.colors[ho.color_idx];
-        let color = graphics::Color::new(
-            color.red as f32 / 256.0,
-            color.green as f32 / 256.0,
-            color.blue as f32 / 256.0,
-            1.0,
-        );
+        let color = self.combo_colors[ho.color_idx];
 
         if end_time >= timeline_left && start_time <= timeline_right {
             let timeline_percent = (start_time - timeline_left) / (timeline_right - timeline_left);