Add initial prototype.

4-high/gel/source/applet/gel-applet-sim_2d_world.adb

@@ -0,0 +1,68 @@
+with
+     gel.Camera.forge,
+     gel.World.simple;
+
+
+package body gel.Applet.sim_2D_world
+is
+
+   sim_world_Id  : constant gel.world_Id  := 1;
+   sim_camera_Id : constant gel.camera_Id := 1;
+
+
+
+   procedure define (Self : in View;   Name : in String)
+   is
+      the_world_Info : constant world_Info_view  := new world_Info;
+      the_Camera     : constant gel.Camera.View  := gel.Camera.forge.new_Camera;
+   begin
+      the_world_Info.World := gel.World.simple.forge.new_World (Name,
+                                                                sim_world_Id,
+                                                                physics.Box2d,
+                                                                Self.Renderer).all'Access;
+
+      the_Camera.Viewport_is (Self.Window.Width, Self.Window.Height);
+      the_Camera.Renderer_is (Self.Renderer);
+      the_Camera.Site_is     ((0.0, 5.0, 50.0));
+
+      the_world_Info.Cameras.append (the_Camera);
+
+      Self.Worlds.append (the_world_Info);
+   end define;
+
+
+
+   package body Forge
+   is
+
+      function new_Applet (Name       : in String;
+                           use_Window : in gel.Window.view) return View
+      is
+         Self : constant View := new Item' (gel.Applet.Forge.to_Applet (Name, use_Window)
+                                            with null record);
+      begin
+         define (Self, Name);
+         return Self;
+      end new_Applet;
+
+   end Forge;
+
+
+
+   function sim_World (Self : in Item) return gel.World.view
+   is
+   begin
+      return Self.World (sim_world_Id);
+   end sim_World;
+
+
+
+   function sim_Camera (Self : in Item) return gel.Camera.view
+   is
+   begin
+      return Self.Camera (sim_world_Id,
+                          sim_camera_Id);
+   end sim_Camera;
+
+
+end gel.Applet.sim_2D_world;