01 Snippet

# Source URL: https://dev.epicgames.com/community/snippets/YjL/fortnite-memory-sequence-device
# Local doc:  epic-docs/community/snippets/YjL/fortnite-memory-sequence-device.md
  using { /Fortnite.com/Devices }
  using { /Verse.org/Random }
  using { /Verse.org/Simulation }
  using { /Verse.org/Simulation/Tags }
  using { /UnrealEngine.com/Temporary/Diagnostics }
  # This tag is used to identify devices that are part of the memory sequence.
  memory_sequence_item_tag := class(tag){}
  # We use a creative device to store and use both the "interaction" device and the "viewer" device in a single device
  # that we can find via gameplay tags.
  # We must do this since there must be a 1:1 relationship between the device the player interacts with and the device that
  # is used to "show" the sequence.
  # Retrieving devices with gameplay tags doesn't guarantee a specific order, which means that the nth interaction device might not
  # match the nth viewer device. For example, the third button might not visually match the third cinematic sequence device.
  memory_sequence_item := class(creative_device):
  # We use a button to detect the player interacting with the memory_sequence_item.
  # You can use any other device that works for your experience and modify how you signal ItemInteractedEvent accordingly.
  @editable
  Button:button_device = button_device{}
  # We use a cinematic_sequence_device to show the memory_sequence_item activation.
  # You can use any other device that works for your experience and modify Play accordingly.
  @editable
  Cinematic:cinematic_sequence_device = cinematic_sequence_device{}
  # This event is raised each time the device the player interacts with is used.
  # We use this instead of directly using the interactable device events to enable easier customization.
  # You just need to change how the ItemInteractedEvent is signaled and your interactable device type, without
  # further modifications to the code that uses the memory_sequence_item.
  ItemInteractedEvent:event(?agent) = event(?agent){}
  # Play/activates the device used to "show" this memory_sequence_item.