Current state:

The renderer.js file is responsible for drawing game elements on the canvas, including snakes, pellets, and the HUD. It's a central part of the game's visual output, interacting with various game objects and the camera.
Positive aspects:

The file is well-organized with separate functions for different rendering tasks.
It uses the camera system effectively to handle viewport rendering.
The code implements visual effects like glowing pellets and snake boosting.
Areas for improvement: