updateDirection_()

in snake-dqn/snake_game.js [189:215]

• 27 lines of code
• 13 McCabe index (conditional complexity)

  updateDirection_(action) {
    if (this.snakeDirection_ === 'l') {
      if (action === ACTION_TURN_LEFT) {
        this.snakeDirection_ = 'd';
      } else if (action === ACTION_TURN_RIGHT) {
        this.snakeDirection_ = 'u';
      }
    } else if (this.snakeDirection_ === 'u') {
      if (action === ACTION_TURN_LEFT) {
        this.snakeDirection_ = 'l';
      } else if (action === ACTION_TURN_RIGHT) {
        this.snakeDirection_ = 'r';
      }
    } else if (this.snakeDirection_ === 'r') {
      if (action === ACTION_TURN_LEFT) {
        this.snakeDirection_ = 'u';
      } else if (action === ACTION_TURN_RIGHT) {
        this.snakeDirection_ = 'd';
      }
    } else if (this.snakeDirection_ === 'd') {
      if (action === ACTION_TURN_LEFT) {
        this.snakeDirection_ = 'r';
      } else if (action === ACTION_TURN_RIGHT) {
        this.snakeDirection_ = 'l';
      }
    }
  }