Add initial prototype.

4-high/gel/source/world/gel-world-simple.ads

@@ -0,0 +1,73 @@
+with
+     ada.unchecked_Conversion;
+
+limited
+with
+     openGL.Renderer.lean;
+
+
+package gel.World.simple
+--
+--  Provides a simple gel world.
+--
+is
+   type Item  is limited new gel.World.item
+   with private;
+
+   type View  is access all Item'Class;
+   type Views is array (Positive range <>) of View;
+
+
+   ---------
+   --  Forge
+   --
+
+   package Forge
+   is
+      function to_World  (Name       : in     String;
+                          Id         : in     world_Id;
+                          space_Kind : in     physics.space_Kind;
+                          Renderer   : access openGL.Renderer.lean.item'Class) return gel.World.simple.item;
+
+      function new_World (Name       : in     String;
+                          Id         : in     world_Id;
+                          space_Kind : in     physics.space_Kind;
+                          Renderer   : access openGL.Renderer.lean.item'Class) return gel.World.simple.view;
+   end Forge;
+
+
+
+private
+
+   --------------
+   --- sprite_Map
+   --
+   type sprite_Map is limited new World.sprite_Map with
+      record
+         Map : id_Maps_of_sprite.Map;
+      end record;
+
+   overriding
+   function  fetch (From : in     sprite_Map) return id_Maps_of_sprite.Map;
+
+   overriding
+   procedure add   (To   : in out sprite_Map;   the_Sprite : in Sprite.view);
+
+   overriding
+   procedure rid   (From : in out sprite_Map;   the_Sprite : in Sprite.view);
+
+
+   --------------
+   --- World Item
+   --
+   type Item is limited new gel.World.item with
+      record
+         all_Sprites : aliased sprite_Map;
+      end record;
+
+
+   overriding
+   function all_Sprites (Self : access Item) return access World.sprite_Map'Class;
+
+
+end gel.World.simple;