Paper/patches/server/0768-Add-PlayerItemFrameChangeEvent.patch
Spottedleaf 01a13871de
Rewrite chunk system (#8177)
Patch documentation to come

Issues with the old system that are fixed now:
- World generation does not scale with cpu cores effectively.
- Relies on the main thread for scheduling and maintaining chunk state, dropping chunk load/generate rates at lower tps.
- Unreliable prioritisation of chunk gen/load calls that block the main thread.
- Shutdown logic is utterly unreliable, as it has to wait for all chunks to unload - is it guaranteed that the chunk system is in a state on shutdown that it can reliably do this? Watchdog shutdown also typically failed due to thread checks, which is now resolved.
- Saving of data is not unified (i.e can save chunk data without saving entity data, poses problems for desync if shutdown is really abnormal.
- Entities are not loaded with chunks. This caused quite a bit of headache for Chunk#getEntities API, but now the new chunk system loads entities with chunks so that they are ready whenever the chunk loads in. Effectively brings the behavior back to 1.16 era, but still storing entities in their own separate regionfiles.

The above list is not complete. The patch documentation will complete it.

New chunk system hard relies on starlight and dataconverter, and most importantly the new concurrent utilities in ConcurrentUtil.

Some of the old async chunk i/o interface (i.e the old file io thread reroutes _some_ calls to the new file io thread) is kept for plugin compat reasons. It will be removed in the next major version of minecraft.

The old legacy chunk system patches have been moved to the removed folder in case we need them again.
2022-09-26 01:02:51 -07:00

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Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: SamB440 <sam@islandearth.net>
Date: Mon, 15 Nov 2021 18:10:10 +0000
Subject: [PATCH] Add PlayerItemFrameChangeEvent
diff --git a/src/main/java/net/minecraft/world/entity/decoration/ItemFrame.java b/src/main/java/net/minecraft/world/entity/decoration/ItemFrame.java
index ac0fe310b01506b3b2a767d47f65cefb57f58c7d..d2a77b4ca343d19e1c70afe3f3906a9bd53d0eec 100644
--- a/src/main/java/net/minecraft/world/entity/decoration/ItemFrame.java
+++ b/src/main/java/net/minecraft/world/entity/decoration/ItemFrame.java
@@ -3,6 +3,7 @@ package net.minecraft.world.entity.decoration;
import com.mojang.logging.LogUtils;
import java.util.OptionalInt;
import javax.annotation.Nullable;
+import io.papermc.paper.event.player.PlayerItemFrameChangeEvent; // Paper
import net.minecraft.core.BlockPos;
import net.minecraft.core.Direction;
import net.minecraft.nbt.CompoundTag;
@@ -187,6 +188,13 @@ public class ItemFrame extends HangingEntity {
return true;
}
// CraftBukkit end
+ // Paper start - call PlayerItemFrameChangeEvent
+ if (source.getEntity() instanceof Player player) {
+ var event = new PlayerItemFrameChangeEvent((org.bukkit.entity.Player) player.getBukkitEntity(), (org.bukkit.entity.ItemFrame) this.getBukkitEntity(), this.getItem().asBukkitCopy(), PlayerItemFrameChangeEvent.ItemFrameChangeAction.REMOVE);
+ if (!event.callEvent()) return true; // return true here because you aren't cancelling the damage, just the change
+ this.setItem(ItemStack.fromBukkitCopy(event.getItemStack()), false);
+ }
+ // Paper end
this.dropItem(source.getEntity(), false);
this.playSound(this.getRemoveItemSound(), 1.0F, 1.0F);
}
@@ -451,13 +459,22 @@ public class ItemFrame extends HangingEntity {
return InteractionResult.FAIL;
}
}
-
- this.setItem(itemstack);
+ // Paper start - call PlayerItemFrameChangeEvent
+ var event = new PlayerItemFrameChangeEvent((org.bukkit.entity.Player) player.getBukkitEntity(), (org.bukkit.entity.ItemFrame) this.getBukkitEntity(), itemstack.asBukkitCopy(), PlayerItemFrameChangeEvent.ItemFrameChangeAction.PLACE);
+ if (!event.callEvent()) return InteractionResult.FAIL;
+ this.setItem(ItemStack.fromBukkitCopy(event.getItemStack()));
+ // this.setItem(itemstack);
+ // Paper end
if (!player.getAbilities().instabuild) {
itemstack.shrink(1);
}
}
} else {
+ // Paper start - call PlayerItemFrameChangeEvent
+ var event = new PlayerItemFrameChangeEvent((org.bukkit.entity.Player) player.getBukkitEntity(), (org.bukkit.entity.ItemFrame) this.getBukkitEntity(), this.getItem().asBukkitCopy(), PlayerItemFrameChangeEvent.ItemFrameChangeAction.ROTATE);
+ if (!event.callEvent()) return InteractionResult.FAIL;
+ setItem(ItemStack.fromBukkitCopy(event.getItemStack()), false, false);
+ // Paper end
this.playSound(this.getRotateItemSound(), 1.0F, 1.0F);
this.setRotation(this.getRotation() + 1);
}