nEngine/examples/sample-game/content/statemachines/carrot-quest.yaml

# Quest chain 2 (D29): activated on the day-start after the starter-quest
# completes, completes on the first carrot harvest (the crop-harvest event's
# cropItemId is the crop def id, not the seed item), pays a seed restock +
# questProgress slot on completion.
id: carrot-quest
initial: inactive
states:
  - id: inactive
  - id: active
  - id: complete
    onEnter:
      - action: give-item
        itemId: carrot-seed
        qty: 2
      - action: play-sound
        sound: harvest
      - action: set-state
        path: player.questProgress.carrot-quest
        value: complete
transitions:
  - from: inactive
    to: active
    on: day-start
    when:
      and:
        - { op: eq, path: player.questProgress.starter-quest, value: complete }
        - not: { op: exists, path: player.questProgress.carrot-quest }
  - from: active
    to: complete
    on: crop-harvest
    when:
      op: eq
      path: payload.cropItemId
      value: carrot