[update] Implemented drawing cubes in TitleScene.

src/sj/CubeProgram.d

@@ -113,7 +113,7 @@ class CubeProgram {
   };
 
   ///
-  enum MaxInstanceCount = 10;
+  enum MaxInstanceCount = 256;
 
   ///
   this() {

src/sj/LobbyWorld.d

@@ -31,7 +31,7 @@ class LobbyWorld {
     gl.Enable(GL_DEPTH_TEST);
     gl.DepthMask(true);
     cube_program_.Draw(
-        cubes.map!"a.Create()",
+        CreateCubes(cube_matrix.Create(), cube_interval)[],
         Projection, view.Create(), light_pos, cube_material);
   }
 
@@ -40,16 +40,41 @@ class LobbyWorld {
     return background_;
   }
 
-  ///
-  ModelMatrixFactory!4[] cubes;
   ///
   ViewMatrixFactory view;
   ///
   vec3 light_pos = vec3(0, 10, 0);
   ///
   CubeProgram.Material cube_material;
+  ///
+  ModelMatrixFactory!4 cube_matrix;
+  ///
+  float cube_interval = 0.005;
 
  private:
+  static mat4[8] CreateCubes(mat4 model, float interval) {
+    mat4[8] cubes;
+
+    enum  sz = 0.05;
+    const si = sz + interval;
+
+    auto m = mat4.identity;
+    m.scale(sz, sz, sz);
+    cubes[] = m;
+
+    cubes[0].translate( si,  si,  si);
+    cubes[1].translate(-si,  si,  si);
+    cubes[2].translate( si, -si,  si);
+    cubes[3].translate(-si, -si,  si);
+    cubes[4].translate( si,  si, -si);
+    cubes[5].translate(-si,  si, -si);
+    cubes[6].translate( si, -si, -si);
+    cubes[7].translate(-si, -si, -si);
+
+    cubes[].each!((ref x) => x = model * x);
+    return cubes;
+  }
+
   Background background_;
 
   CubeProgram cube_program_;

src/sj/TitleScene.d

@@ -1,6 +1,10 @@
 /// License: MIT
 module sj.TitleScene;
 
+import std.math;
+
+import gl4d;
+
 import sj.AbstractScene,
        sj.KeyInput,
        sj.LobbyWorld,
@@ -12,11 +16,7 @@ class TitleScene : AbstractScene {
   ///
   this(LobbyWorld lobby) {
     lobby_ = lobby;
-
+    SetupLobby(lobby);
-    // TODO: test
-    import gl4d;
-    lobby_.background.outer_color = vec4(0.8, 0.8, 0.8, 1);
-    lobby_.background.inner_color = vec4(1, 1, 1, 1);
   }
 
   ///
@@ -25,12 +25,28 @@ class TitleScene : AbstractScene {
   }
 
   override void Update(KeyInput input) {
+    lobby_.cube_matrix.rotation += vec3(PI/300, PI/300, PI/300);
   }
   override void Draw() {
     lobby_.Draw();
   }
 
  private:
+  static void SetupLobby(LobbyWorld lobby) {
+    lobby.view.pos    = vec3(0, 0, -1);
+    lobby.view.target = vec3(0, -0.2, 0);
+
+    lobby.background.inner_color = vec4(0.9, 0.9, 0.9, 1);
+    lobby.background.outer_color = vec4(0.2, 0.2, 0.2, 1);
+
+    lobby.light_pos                    = vec3(0, 10, 0);
+    lobby.cube_material.diffuse_color  = vec3(0.1, 0.1, 0.1);
+    lobby.cube_material.light_color    = vec3(1, 0.8, 0.8);
+    lobby.cube_material.light_power    = vec3(100, 100, 100);
+    lobby.cube_material.ambient_color  = vec3(0.1, 0.1, 0.1);
+    lobby.cube_material.specular_color = vec3(0.5, 0.2, 0.2);
+  }
+
   SceneInterface next_scene_;
 
   LobbyWorld lobby_;