[update] Implemented an animation of LoadingScene.

src/sj/LoadingScene.d

@@ -1,6 +1,8 @@
 /// License: MIT
 module sj.LoadingScene;
 
+import std.math;
+
 import gl4d;
 
 static import sjplayer;
@@ -11,11 +13,26 @@ import sj.FontSet,
        sj.Music,
        sj.PlayScene,
        sj.ProgramSet,
-       sj.SceneInterface;
+       sj.SceneInterface,
+       sj.Text,
+       sj.TextProgram,
+       sj.util.Animation,
+       sj.util.Easing;
 
 ///
 class LoadingScene : SceneInterface {
  public:
+  ///
+  enum AnimeFrames = 300;
+  ///
+  enum CubeRotationSpeed = vec3(PI/200, PI/20, PI/200);
+  ///
+  enum LoadingTextScale = vec3(-0.1, 0.1, 0.1);
+  ///
+  enum LoadingTextTranslation = vec3(0, -0.3, 0);
+  ///
+  enum LoadingTextColor = vec4(0.2, 0.2, 0.2, 1);
+
   ///
   this(
       LobbyWorld          lobby,
@@ -25,13 +42,23 @@ class LoadingScene : SceneInterface {
     lobby_      = lobby;
     posteffect_ = posteffect;
     programs_   = programs;
-    fonts_      = fonts;
+
+    loading_text_ = new Text(programs.Get!TextProgram);
+    with (loading_text_) {
+      auto w = LoadGlyphs(
+          vec2i(128, 32), "Loading...", vec2i(16, 0), fonts.gothic);
+      matrix.scale = LoadingTextScale;
+      matrix.translation =
+        LoadingTextTranslation + vec3(-w/2*matrix.scale.x, 0, 0);
+      color = LoadingTextColor;
+    }
   }
   ~this() {
+    loading_text_.destroy();
   }
 
   ///
-  void SetupSceneDependency(PlayScene play) {  // TODO: add play scene
+  void SetupSceneDependency(PlayScene play) {
     play_scene_ = play;
   }
 
@@ -40,10 +67,29 @@ class LoadingScene : SceneInterface {
     music_       = music;
     offset_beat_ = offset_beat;
 
-    first_drawn_ = false;
+    anime_ = Animation(AnimeFrames);
+
+    with (lobby_) {
+      bg_inner_ease_ = Easing!vec4(
+          music.preview.bg_inner_color, background.inner_color/2);
+      bg_outer_ease_ = Easing!vec4(
+          music.preview.bg_outer_color, background.outer_color/2);
+    }
   }
   override SceneInterface Update(KeyInput input) {
-    if (first_drawn_) {
+    const ratio = anime_.Update();
+
+    with (lobby_) {
+      cube_matrix.rotation += CubeRotationSpeed;
+
+      background.inner_color = bg_inner_ease_.Calculate(ratio);
+      background.outer_color = bg_outer_ease_.Calculate(ratio);
+    }
+
+    posteffect_.clip_lefttop.y     = 1-pow(1-ratio, 4);
+    posteffect_.clip_rightbottom.y = 1-pow(1-ratio, 4);
+
+    if (anime_.isFinished) {
       // TODO: parallelize context creation
       auto context = music_.CreatePlayerContext(posteffect_, programs_.player);
       play_scene_.Initialize(music_, context, offset_beat_);
@@ -53,7 +99,7 @@ class LoadingScene : SceneInterface {
   }
   override void Draw() {
     lobby_.Draw();
-    first_drawn_ = true;
+    loading_text_.Draw(lobby_.Projection, lobby_.view.Create());
   }
 
  private:
@@ -61,14 +107,17 @@ class LoadingScene : SceneInterface {
 
   ProgramSet programs_;
 
-  FontSet fonts_;
-
   LobbyWorld lobby_;
 
+  Text loading_text_;
+
   PlayScene play_scene_;
 
   Music music_;
   float offset_beat_;
 
-  bool first_drawn_;
+  Animation anime_;
+
+  Easing!vec4 bg_inner_ease_;
+  Easing!vec4 bg_outer_ease_;
 }

src/sj/SelectScene.d

@@ -133,7 +133,7 @@ private abstract class AbstractSceneState {
   enum CubeRotationSpeed = vec3(0, PI/500, 0);
   enum CubeInterval      = 0.005;
 
-  enum PlayingCubeRotationSpeed = vec3(PI/100, PI/10, PI/100);
+  enum PlayingCubeRotationSpeed = vec3(PI/200, PI/20, PI/200);
   enum PlayingCubeInterval      = 0.04;
 
   enum LoadingCubeRotationSpeed = vec3(PI/100, PI/10, PI/100);
@@ -364,10 +364,6 @@ private class MusicPlayState : AbstractSceneState {
       Easing!vec3(CubeRotationSpeed, PlayingCubeRotationSpeed);
     cube_interval_ease_ =
       Easing!float(CubeInterval, PlayingCubeInterval);
-
-    bg_inner_ease_ =
-      Easing!vec4(owner.lobby_.background.inner_color,
-          owner.lobby_.background.inner_color*2);
   }
   override UpdateResult Update(KeyInput input) {
     const ratio = anime_.Update();
@@ -377,8 +373,6 @@ private class MusicPlayState : AbstractSceneState {
     with (owner.lobby_) {
       cube_matrix.rotation += cube_rota_speed;
       cube_interval         = cube_interval_;
-
-      background.inner_color = bg_inner_ease_.Calculate(ratio);
     }
 
     if (!input.down) {
@@ -409,7 +403,6 @@ private class MusicPlayState : AbstractSceneState {
 
   Easing!vec3  cube_rota_speed_ease_;
   Easing!float cube_interval_ease_;
-  Easing!vec4  bg_inner_ease_;
 }
 ///
 private class MusicCancelPlayState : AbstractSceneState {
@@ -428,9 +421,6 @@ private class MusicCancelPlayState : AbstractSceneState {
       Easing!vec3(cube_rota_speed, CubeRotationSpeed);
     cube_interval_ease_ =
       Easing!float(cube_interval, CubeInterval);
-
-    bg_inner_ease_ = Easing!vec4(
-        owner.lobby_.background.inner_color, music.preview.bg_inner_color);
   }
   override UpdateResult Update(KeyInput input) {
     const ratio = anime_.Update();
@@ -438,7 +428,6 @@ private class MusicCancelPlayState : AbstractSceneState {
     with (owner.lobby_) {
       cube_matrix.rotation += cube_rota_speed_ease_.Calculate(ratio);
       cube_interval         = cube_interval_ease_  .Calculate(ratio);
-      background.inner_color  = bg_inner_ease_       .Calculate(ratio);
     }
     if (anime_.isFinished) {
       return CreateResult(music_wait_state_);
@@ -458,5 +447,4 @@ private class MusicCancelPlayState : AbstractSceneState {
 
   Easing!vec3  cube_rota_speed_ease_;
   Easing!float cube_interval_ease_;
-  Easing!vec4  bg_inner_ease_;
 }