[SOLVED] Creating an Item Entity

Plugins Plugin Development
1

Hello guys,
I can’t seem to figure out how to create an Item (Entity) in the world from an ItemStack.
I already tried to use the Extent.createEntity() method, but without much luck.

Thanks for any help, nylser :smiley:

2

Here is how i would do it. I have not tested the code nor do I have SpongeAPI so some things maybe a tiny bit wrong

ItemStack stack;
World world;
Vector3i vector;
Item item = (Item) world.createEntity(EntityTypes.DROPPED_ITEM,  vector) ;
RepresentedItemData data = item.getOrCreate(RepresentedItemData.class).get();
data.setValue(stack);
world.spawnEntity(item);
1 Like
3

This code looks good, but it only seems to create a dropped stone item in the world.

4

This is the more efficient way to do it, but I have tried it and it does not work. Im out of ideas now.

ItemStack stack;
World world;
Vector3i vector;
Item item = (Item) world.createEntity(EntityTypes.DROPPED_ITEM,  vector) ;
item.getItemData().setValue(stack);
world.spawnEntity(item);
1 Like
5

You need to offer the data back to the entity. No use changing it without re-applying it.
item.offer(item.getItemData().setValue(stack));

2 Likes
6

Thank you very much! this worked :slight_smile:

7

This code doesn’t seem to work with the newer Sponge API.

  • DROPPED_ITEM is no longer a thing in EntityTypes
  • Entities can’t be cast to Items
  • RepresentedItemData (the thing returned from item.getItemData()) doesn’t have a set method that takes in an ItemStack anymore.
  • world.spawnEntity now requires a Cause

Does anybody know the new way to “drop” an item in the world at a location? I’ll see if I can figure it out on my own but if someone else already knows how to do it that would help.

8

You would need to spawn an entity into the world as you normally would, with a few minor adjustments. Take a look at the entity docs to see how spawning an entity would normally occur. Note that SpawnCauses are currently not implemented.

Here is an example of spawning an ItemStack in:

Location<World> loc = ...;
ItemStack stack = ...;
Extent extent = loc.getExtent();
// Use the ITEM type
Optional<Entity> optional = extent.createEntity(EntityTypes.ITEM, loc.getBlockPosition());
if (optional.isPresent()) {
    Entity entity = optional.get();
    // We need to specify the ItemStack that this entity should represent
    entity.offer(Keys.REPRESENTED_ITEM, stack.createSnapshot());
    // If running this from a command, use the CommandSource, rather than 'this'
    extent.spawnEntity(entity, Cause.of(this));
}

There is a PR open on the docs on things such as spawning items, creating items, and such if you wish to look through it.

9

Thanks, I’ll give that a shot.