world.setSystem(new PhysicsSystem());
world.setSystem(new ExpirationSystem());
world.setSystem(new PlayerTankTowerSystem(container));
world.setSystem(new PlayerTankMovementSystem(container));
world.setSystem(new BoundarySystem(0, 0, 4096, 4096));
world.setSystem(new CameraSystem(container));
world.setSystem(new AmmoRegenerationSystem());
terrainRenderSystem = world.setSystem(new TerrainRenderSystem(container), true);
renderSystem = world.setSystem(new RenderSystem(container), true);
hudRenderSystem = world.setSystem(new HudRenderSystem(container), true);