text: import { SPACE_WIDTH, SPACE_HEIGHT, ROCK_INITIAL_VELOCITY } from './const'
  import { int as randint, num as randnum } from './lib/random'
  
  export const make = () => {
      const x = randint(0, SPACE_WIDTH)
      const y = randint(0, SPACE_HEIGHT)
      const vx = randnum(-ROCK_INITIAL_VELOCITY, ROCK_INITIAL_VELOCITY)
      const vy = randnum(-ROCK_INITIAL_VELOCITY, ROCK_INITIAL_VELOCITY)
      const r = 100
      const m = 64
      return { x, y, vx, vy, r, m }
  }
  