How to stop falling items?

CVDH · January 14, 2016, 1:41pm

Hello,
if i create an item and spawn it on a world.
How to stop the item by falling down.

RandomByte · January 14, 2016, 1:58pm

The item you spawn spawns at the position you specified. Then it follows the rules of “minecraft physics”, like gravity and water flow. So it can only fall if it was not spawned on the ground.
Am I guessing right what you mean?

CVDH · January 14, 2016, 1:59pm

Are there a way do disable this rule?

RandomByte · January 14, 2016, 2:06pm

I don’t think there is a way to “lock” the (item)entity position without mods. A workaround could be setting the location rapidly with the scheduler but this could be glitchy. Just try.

ryantheleach · January 14, 2016, 2:16pm

Make it ride an invisible armor stand.

CVDH · January 14, 2016, 2:43pm

Just set it Passager?

ryantheleach · January 14, 2016, 2:46pm

Yeah, and set armor stand to no gravity.

CVDH · January 14, 2016, 3:19pm

only got: IllegalStateException: Entity is already tracked!

ryantheleach · January 14, 2016, 3:27pm

Report what you did as a bug to the SpongeCommon bug tracker, that shouldn’t happen. https://github.com/SpongePowered/SpongeCommon/issues

Back on topic though, I should have been more specific, when I said invisible armor stand I mean,

Marker
Invisible
NoGravity

Also not sure if you need both Marker and Invisible.

I’m not sure what data they represent in SpongeAPI.

github.com

SpongePowered/SpongeAPI/blob/6ec0106ae12c349729c5f6c08e51d5f3b696df80/src/main/java/org/spongepowered/api/entity/living/ArmorStand.java

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 * This file is part of SpongeAPI, licensed under the MIT License (MIT).
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CVDH · January 14, 2016, 3:39pm

I tryed this:

Extent extent = spawnLocation.getExtent(); Entity stand = extent.createEntity(EntityTypes.ARMOR_STAND, spawnLocation.getPosition()).get(); Entity item = extent.createEntity(EntityTypes.ITEM, spawnLocation.getPosition()).get(); ArmorStand as = (ArmorStand) stand; as.setGravity(false); InvisibilityData invisibilityData= as.getOrCreate(InvisibilityData.class).get(); invisibilityData.invisible().set(true); as.offer(invisibilityData); as.offer(Keys.PASSENGER,EntitySnapshot.builder().from(item).build()); extent.spawnEntity(as, Cause.of(this));

ryantheleach · January 14, 2016, 3:54pm

InvisibilityData is also used for vanish, so I’m not 100% sure on whether this is the correct form of invisibility.

CVDH · January 14, 2016, 4:06pm

the Error is thrown in this line:
as.offer(Keys.PASSENGER,EntitySnapshot.builder().from(item).build());

gabizou · January 14, 2016, 5:05pm

Try this:

Extent extent = spawnLocation.getExtent();
Entity stand = extent.createEntity(EntityTypes.ARMOR_STAND, spawnLocation.getPosition()).get();
Entity item = extent.createEntity(EntityTypes.ITEM, spawnLocation.getPosition()).get();
ArmorStand as = (ArmorStand) stand;
as.setGravity(false);
as.offer(Keys.INVISIBLE, true);
extent.spawnEntity(as, Cause.of(this));
extent.spawnEntity(item, Cause.of(this));
as.setPassenger(item);

CVDH · January 18, 2016, 9:47am

java.lang.IllegalStateException
at com.google.common.base.Preconditions.checkState(Preconditions.java:161)

Cause by as.setPassenger(item);

Version: spongeforge-1.8-1577-3.1.0-BETA-1045

simon816 · January 18, 2016, 10:42am

It looks like setPassenger in the implementation is not correctly building the DataTransactionResult. This will be fixed soon
https://github.com/SpongePowered/SpongeCommon/blob/master/src/main/java/org/spongepowered/common/mixin/core/entity/MixinEntity.java#L611-L628

simon816 · January 18, 2016, 3:02pm

OK fixed the issue

CVDH · January 18, 2016, 3:45pm

How can i get this version of SpongeCommon(With this fix) for my server
Did it exist for mc 1.8
did i need to use Gradle for it?

simon816 · January 18, 2016, 8:02pm

The next build on spongeforge will have it (1062). Changes in spongecommon get added to spongeforge when someone bumps the reference in the repo.
The ref will be bumped soon