Bartering

BARTERING adds progress when a player completes piglin bartering.

quests: # Root task configuration.
  levels: # Level entries.
    26: # Target level.
      requirements: # Requirement list.
        rules0: # Unique rule id.
          type: "BARTERING" # Listen for piglin bartering.
          required: "4" # Number of barter completions required.
        description: # Requirement descriptions.
          0: "%status%<reset> <gray>Complete 4 piglin barters</gray> <white>({currentProgress}/{maxProgress})</white>" # Description for rules0.

The source tracks the bartering input internally.