Recreate the 1981 arcade game <Star Castle> with p5.js

"Recreate the 1981 arcade game <Star Castle> with p5.js: 1. Restore the core gameplay: Control the laser turret to rotate and shoot, destroy the layered approaching alien castles, dodge enemy laser/missile counterattacks, and protect the bottom city; 2. Recreate the original minimalist sci-fi visuals with pure vector lines, no external creatives, restore turret charging shots, city health, and increasing level difficulty; 3. Keyboard and mouse (arrow keys for rotation + spacebar for firing), adapting to the original operation feedback; 4. Runs smoothly at 60 FPS, a single HTML file can be played directly, black background with bright lines fitting the 80s arcade texture, and code comments are clear for easy adjustment of turret firing rate." 
 ### Summary 1. Core Replicas: Restores the classic mechanics of rotating and shooting turrets in the interstellar castle, destroying alien castles, and dodging counterattacks to protect the city; 2. Visual Style: Drawn with pure vector lines, no external creatives, accurately replicating the minimalist sci-fi arcade visuals of the 1981 original; 3. Technology Implementation: Developed with a single p5.js file, featuring high frame rate smoothness, compatible with classic keyboard and mouse controls, and easy to adjust game difficulty parameters.