feat: Three new mods

phira/locales/en-US/song.ftl

@@ -100,11 +100,17 @@ review-edit-tags-done = Tags updated.
 
 mods = Mods
 mods-autoplay = Autoplay
-mods-autoplay-sub = Plays the chart without user input.
+mods-autoplay-sub = Results will not be submitted when enabled.
 mods-flip-x = Mirror
 mods-flip-x-sub = Mirrors the chart by the X-axis.
+mods-fade-in = Fade-In
+mods-fade-in-sub = Makes notes fade in when they approach the judgeline.
 mods-fade-out = Fade-Out
 mods-fade-out-sub = Makes notes fade out when they approach the judgeline.
+mods-nightcore = Nightcore
+mods-nightcore-sub = Plays the chart at higher speed
+mods-rainbow = Rainbow
+mods-rainbow-sub = Makes your game a *little* more colorful
 
 rate-failed = Rate failed.
 rate-done = Rated successfully.

phira/locales/ja-JP/song.ftl

@@ -55,5 +55,16 @@ ldb = リーダーボード
 ldb-load-failed = リーダーボードの読み込みに失敗
 ldb-no-rank = なし
 
+mods = Mods
 mods-autoplay = オートプレイ
 mods-autoplay-sub = これを有効にすると、リザルトの記録が無効になります
+mods-flip-x = ミラー
+mods-flip-x-sub = X軸に沿って譜面を反転させます
+mods-fade-in = フェードイン
+mods-fade-in-sub = ノーツが判定線に近づくと現れるようにします
+mods-fade-out = フェードアウト
+mods-fade-out-sub = ノーツが判定線に近づくと消えるようにします
+mods-nightcore = ナイトコア
+mods-nightcore-sub = より高速で譜面をプレイします
+mods-rainbow = レインボー
+mods-rainbow-sub = ゲームを *少しだけ* カラフルにします

phira/locales/zh-CN/song.ftl

@@ -101,8 +101,14 @@ mods-autoplay = 自动游玩
 mods-autoplay-sub = 启用后将无法上传成绩
 mods-flip-x = X 轴反转
 mods-flip-x-sub = 在 X 轴上反转谱面
+mods-fade-in = 上隐
+mods-fade-in-sub = 音符在靠近判定线时会显现
 mods-fade-out = 下隐
 mods-fade-out-sub = 音符在靠近判定线时会隐藏
+mods-nightcore = 夜店
+mods-nightcore-sub = 以高倍速游玩谱面
+mods-rainbow = 彩虹
+mods-rainbow-sub = 遇上彩虹，吃定彩虹
 
 rate-failed = 评分失败
 rate-done = 评分成功

phira/src/scene/song.rs

@@ -1198,7 +1198,7 @@ impl SongScene {
                 let (btn, clicked) = &mut self.mod_btns[index];
                 if *clicked {
                     *clicked = false;
-                    self.mods.toggle(flag);
+                    self.mods.toggle_mod(flag);
                 }
                 let on = self.mods.contains(flag);
                 let oh = rr.h;
@@ -1219,7 +1219,10 @@ impl SongScene {
             };
             item(tl!("mods-autoplay"), Some(tl!("mods-autoplay-sub")), Mods::AUTOPLAY);
             item(tl!("mods-flip-x"), Some(tl!("mods-flip-x-sub")), Mods::FLIP_X);
+            item(tl!("mods-fade-in"), Some(tl!("mods-fade-in-sub")), Mods::FADE_IN);
             item(tl!("mods-fade-out"), Some(tl!("mods-fade-out-sub")), Mods::FADE_OUT);
+            item(tl!("mods-nightcore"), Some(tl!("mods-nightcore-sub")), Mods::NIGHTCORE);
+            item(tl!("mods-rainbow"), Some(tl!("mods-rainbow-sub")), Mods::RAINBOW);
             (width, h)
         });
     }

prpr/src/config.rs

@@ -14,6 +14,29 @@ bitflags! {
         const AUTOPLAY = 1;
         const FLIP_X = 2;
         const FADE_OUT = 4;
+        const FADE_IN = 8;
+        const NIGHTCORE = 16;
+        const RAINBOW = 32;
+    }
+}
+
+impl Mods {
+    pub fn toggle_mod(&mut self, flag: Mods) {
+        if self.contains(flag) {
+            self.remove(flag);
+        } else {
+            for &conflict in Mods::conflicts(flag) {
+                self.remove(conflict);
+            }
+            self.insert(flag);
+        }
+    }
+    fn conflicts(flag: Mods) -> &'static [Mods] {
+        match flag {
+            Mods::FADE_IN => &[Mods::FADE_OUT],
+            Mods::FADE_OUT => &[Mods::FADE_IN],
+            _ => &[],
+        }
     }
 }
 

prpr/src/core/line.rs

@@ -1,8 +1,7 @@
 use super::{chart::ChartSettings, object::CtrlObject, Anim, AnimFloat, BpmList, Matrix, Note, Object, Point, RenderConfig, Resource, Vector};
 use crate::{
-    config::Mods,
     ext::{get_viewport, NotNanExt, SafeTexture},
-    judge::{JudgeStatus, LIMIT_BAD},
+    judge::JudgeStatus,
     ui::Ui,
 };
 use macroquad::prelude::*;
@@ -352,9 +351,6 @@ impl JudgeLine {
                 draw_below: self.show_below,
                 incline_sin: self.incline.now_opt().map(|it| it.to_radians().sin()).unwrap_or_default(),
             };
-            if res.config.has_mod(Mods::FADE_OUT) {
-                config.invisible_time = LIMIT_BAD;
-            }
             if alpha < 0.0 {
                 if !settings.pe_alpha_extension {
                     return;

prpr/src/core/note.rs

@@ -1,6 +1,7 @@
 use super::{chart::ChartSettings, BpmList, CtrlObject, JudgeLine, Matrix, Object, Point, Resource};
 pub use crate::{
-    judge::{HitSound, JudgeStatus},
+    judge::{HitSound, JudgeStatus, LIMIT_BAD},
+    config::Mods,
     parse::RPE_HEIGHT,
 };
 use macroquad::prelude::*;
@@ -236,11 +237,17 @@ impl Note {
         } else {
             &res.res_pack.note_style
         };
+        let mod_alpha = if res.config.has_mod(Mods::FADE_OUT) {
+            ((self.time - res.time - LIMIT_BAD) / LIMIT_BAD).clamp(0., 1.)
+        } else if res.config.has_mod(Mods::FADE_IN) {
+            (1. - (self.time - res.time - LIMIT_BAD) / LIMIT_BAD).clamp(0., 1.)
+        } else { 1. };
         let draw = |res: &mut Resource, tex: Texture2D| {
             let mut color = color;
             if !config.draw_below {
                 color.a *= (self.time - res.time).min(0.) / FADEOUT_TIME + 1.;
             }
+            color.a *= mod_alpha;
             res.with_model(self.now_transform(res, ctrl_obj, base, config.incline_sin), |res| {
                 draw_center(res, tex, order, scale, color);
             });
@@ -264,6 +271,7 @@ impl Note {
                         return;
                     }
                     let end_height = end_height / res.aspect_ratio * spd;
+                    color.a *= mod_alpha;
 
                     let h = if self.time <= res.time { line_height } else { height };
                     let bottom = h - line_height;

prpr/src/scene/game.rs

@@ -245,6 +245,17 @@ impl GameScene {
                 .push(Effect::new(0.0..f32::INFINITY, include_str!("fxaa.glsl"), Vec::new(), false).unwrap());
         }
 
+        if config.has_mod(Mods::NIGHTCORE) {
+            config.speed = 1.5;
+        }
+
+        if config.has_mod(Mods::RAINBOW) {
+            chart
+                .extra
+                .effects
+                .push(Effect::new(0.0..f32::INFINITY, include_str!("rainbow.glsl"), Vec::new(), false).unwrap());
+        }
+
         let info_offset = info.offset;
         let mut res = Resource::new(
             config,

prpr/src/scene/rainbow.glsl

@@ -0,0 +1,37 @@
+#version 100
+precision highp float;
+
+varying lowp vec2 uv;
+uniform sampler2D screenTexture;
+uniform float time;
+
+const float hueSpeed = 0.5;
+
+vec3 rgb2hsv(vec3 c) {
+    vec4 K = vec4(0.0, -1.0/3.0, 2.0/3.0, -1.0);
+    vec4 p = mix(vec4(c.bg, K.wz), vec4(c.gb, K.xy), step(c.b, c.g));
+    vec4 q = mix(vec4(p.xyw, c.r), vec4(c.r, p.yzx), step(p.x, c.r));
+
+    float d = q.x - min(q.w, q.y);
+    float e = 1.0e-10;
+    return vec3(abs(q.z + (q.w - q.y) / (6.0 * d + e)),
+                d / (q.x + e),
+                q.x);
+}
+
+vec3 hsv2rgb(vec3 c) {
+    vec3 p = abs(fract(c.xxx + vec3(0.0, 2.0/3.0, 1.0/3.0)) * 6.0 - 3.0);
+    return c.z * mix(vec3(1.0), clamp(p - 1.0, 0.0, 1.0), c.y);
+}
+
+void main() {
+    vec4 color = texture2D(screenTexture, uv);
+
+    vec3 hsv = rgb2hsv(color.rgb);
+
+    hsv.x = fract(hsv.x + time * hueSpeed);
+
+    vec3 rgb = hsv2rgb(hsv);
+
+    gl_FragColor = vec4(rgb, color.a);
+}