Drop Item

[pavlicekdominik]

Drop Item Feature

1. Item Pickup Blueprint/Class

Attributes:

• FInventoryItemOptionalData:
  • SpawnClassOnDrop: Represents the 3D model or actor of the item in the game world.

Functionality:

• VerifyInventoryInterface:

  • Ensure that the SpawnClassOnDrop either directly implements the InventoryInterface or contains a component that implements it.

• InstantiatePickup:

  • Spawns the SpawnClassOnDrop in the game world.
  • Transfer the relevant item data (including metadata, flags, and quantity) to the spawned actor's InventoryInterface.

2. Drop Item Functionality

Attributes:

• DropAmount: (for stackable items) Defines how much of the item the player wishes to drop.

Functionality:

• CanDropItem:

  • Checks if the item has tags like "Drop.Allowed".
  • Optionally, checks if the item is equipped based on Equipment Check settings (more on this later).

• HandleDropAction:

  • Handles the action of dropping the item.
  • Spawns the SpawnClassOnDrop in the world.
  • If stackable, presents a UI prompt to the player to select the DropAmount.
  • Updates item flags and tags accordingly.
  • Removes or moves the item from the player's inventory based on the scenario.

• UpdateInventoryUI:

  • Updates the player's inventory UI to reflect the new state after dropping an item.

3. Networking Considerations

• Ensure the HandleDropAction is replicated to all relevant players.
• Ensure synchronization between the server and client for accurate and consistent item data, especially in a multiplayer context.

4. Integration with Current System

Functionality:

• UpdateFlagsAndTags:

  • Before removing the item from the inventory, ensure that the item's flags and tags are updated to reflect its new state.

• MoveOrRemoveItem:

  • Depending on the context, either MoveItemBetweenInventories or RemoveItemFromInventory should be invoked.

5. Equipment Check

Attributes:

• DropEquippedItemSetting: This setting lets developers decide how to handle the dropping of equipped items. The options could be:

  • AutoUnequip: The item is automatically unequipped before being dropped.
  • WarnAndConfirm: The system prompts the player with a warning that they're about to drop an equipped item and seeks confirmation.
  • Disallow: The system doesn't allow dropping of equipped items.

Functionality:

• CheckIfEquipped:

  • Before dropping, the system checks if the item is currently equipped.

• HandleEquippedItemDrop:

  • Depending on the DropEquippedItemSetting, this function will decide how to handle the item drop action for equipped items.