1 files changed, 59 insertions, 0 deletions
diff --git a/src/video.adb b/src/video.adb
new file mode 100644
index 0000000..0a93592
--- /dev/null
+++ b/src/video.adb
@@ -0,0 +1,59 @@
+with Sf.Window;
+with Sf.Window.Event;
+with Sf.Graphics.Color;
+
+package body Video is
+   procedure Clear_Screen is
+   begin
+      for X in 0 .. sfUint32 (Width) - 1 loop
+         for Y in 0 .. sfUint32 (Height) - 1 loop
+            Image.setPixel (Pixels, X, Y, Color.sfBlack);
+         end loop;
+      end loop;
+   end Clear_Screen;
+
+   procedure Initialize is
+   begin
+      Sprite.setTexture (Pixels_Sprite, Pixels_Texture);
+      Sprite.setPosition (Pixels_Sprite, (Float (0), Float (0)));
+      Sprite.setScale (Pixels_Sprite, (Float (Scale), Float (Scale)));
+      RenderWindow.setFramerateLimit (app, 60);
+   end Initialize;
+
+   function Is_Running return Boolean is
+   begin
+      return RenderWindow.isOpen (app) = sfTrue;
+   end Is_Running;
+
+   procedure Display is
+      use Sf.Window.Event;
+
+      e : sfEvent;
+   begin
+      while RenderWindow.pollEvent (app, event => e) = sfTrue loop
+         if e.eventType = sfEvtClosed then
+            RenderWindow.close (app);
+         end if;
+      end loop;
+
+      RenderWindow.clear (app, Color.sfWhite);
+      Texture.updateFromImage (Pixels_Texture, Pixels, 0, 0);
+      RenderWindow.drawSprite (app, Pixels_Sprite);
+      RenderWindow.display (app);
+   end Display;
+
+   function Toggle_Pixel (X, Y : sfUint32) return Boolean is
+      use Color;
+
+      P : constant sfColor := Image.getPixel (Pixels, X, Y);
+      R : constant Boolean := P = sfWhite;
+   begin
+      Image.setPixel (Pixels, X, Y, (if R then sfBlack else sfWhite));
+      return R;
+   end Toggle_Pixel;
+
+   procedure Finish is
+   begin
+      RenderWindow.close (app);
+   end Finish;
+end Video;