+ # Begin playing, after intro if `initial`, otherwise after death
+ fun begin_play(initial: Bool)
+ do
+ ui_sprites.clear
+
+ world.spawn_player
+ world.planes.add new Airplane(new Point3d[Float](0.0, world.player.center.y - 10.0, 0.0), 16.0, 4.0)
+
+ if initial then
+ # Setup tutorial
+ ui_sprites.add_all([tutorial_wasd, tutorial_arrows, tutorial_chute])
+ end
+ end
+