const PLAYER_WIDTH = 20;
let PLAYER_MAX_SPEED = 600;
let LASER_MAX_SPEED = 300.0;
let LASER_COOLDOWN = 0.5;
let ENEMIES_PER_ROW = 5;
let ENEMY_HORIZONTAL_PADDING = 80;
let ENEMY_VERTICAL_PADDING = 70;
let ENEMY_VERTICAL_SPACING = 80;
let ENEMY_COOLDOWN = 15.0;
let KEY_CODE_LEFT = 37;
let KEY_CODE_RIGHT = 39;
let KEY_CODE_SPACE = 32;
let GAME_HEIGHT = 600;
let GAME_WIDTH = 800;
let ENEMY_X = 50;
let ENEMY_Y = 10;
let PAUSE = false;
let SCORE = 0;
let lives = 3;
let levels = 1;
let AUDIO = true
let PLAYERS_KEY = "players"
let PLAYER_NAME = "player"