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PaperMC/patches/server/0997-Expose-hand-during-BlockCanBuildEvent.patch

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Expose Hand during BlockCanBuildEvent (#9636)
2023-08-23 02:41:30 +02:00
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: The456gamer <the456gamer@the456gamer.dev>
Date: Mon, 21 Aug 2023 14:13:42 +0100
Subject: [PATCH] Expose hand during BlockCanBuildEvent
diff --git a/src/main/java/net/minecraft/world/item/BlockItem.java b/src/main/java/net/minecraft/world/item/BlockItem.java
Dont resend blocks on interactions (#9413) In general, the client now has an acknowledgment system that will cause block changes made by the client to be reverted correctly. Essentially: The client enters a "prediction" stage, where any block changes made will have its old blockstate captured (this is referred to as "server state"). If you update blocks during this stage, the client will update this captured server state as long as they're still currently predicting. After prediction is done (via an ack packet) all captured blockstates are reverted to their captured server state. This means that if the server actually updated a block and send a block update packet, it's correctly set, while if a block wasn't updated on the server but WAS updated on the client (server state wasn't updated), that change will be reverted. It should be noted that this system does not yet support block entities, so those still need to be resynced when needed. I discovered this when noticing that blocks broken outside of the player's valid interaction distance are still properly reverted, even though the server doesn't send any block updates, only an ack packet.
2023-12-03 04:41:35 +01:00
index 6819cea2858f0035a4fbf3671612d43fead883b6..ce0a22b5084cb382b7c1036960793e3a8314a26f 100644
Expose Hand during BlockCanBuildEvent (#9636)
2023-08-23 02:41:30 +02:00
--- a/src/main/java/net/minecraft/world/item/BlockItem.java
+++ b/src/main/java/net/minecraft/world/item/BlockItem.java
Dont resend blocks on interactions (#9413) In general, the client now has an acknowledgment system that will cause block changes made by the client to be reverted correctly. Essentially: The client enters a "prediction" stage, where any block changes made will have its old blockstate captured (this is referred to as "server state"). If you update blocks during this stage, the client will update this captured server state as long as they're still currently predicting. After prediction is done (via an ack packet) all captured blockstates are reverted to their captured server state. This means that if the server actually updated a block and send a block update packet, it's correctly set, while if a block wasn't updated on the server but WAS updated on the client (server state wasn't updated), that change will be reverted. It should be noted that this system does not yet support block entities, so those still need to be resynced when needed. I discovered this when noticing that blocks broken outside of the player's valid interaction distance are still properly reverted, even though the server doesn't send any block updates, only an ack packet.
2023-12-03 04:41:35 +01:00
@@ -214,7 +214,7 @@ public class BlockItem extends Item {
Expose Hand during BlockCanBuildEvent (#9636)
2023-08-23 02:41:30 +02:00
boolean defaultReturn = (!this.mustSurvive() || state.canSurvive(context.getLevel(), context.getClickedPos())) && world.checkEntityCollision(state, entityhuman, voxelshapecollision, context.getClickedPos(), true); // Paper
org.bukkit.entity.Player player = (context.getPlayer() instanceof ServerPlayer) ? (org.bukkit.entity.Player) context.getPlayer().getBukkitEntity() : null;
- BlockCanBuildEvent event = new BlockCanBuildEvent(CraftBlock.at(context.getLevel(), context.getClickedPos()), player, CraftBlockData.fromData(state), defaultReturn);
+ BlockCanBuildEvent event = new BlockCanBuildEvent(CraftBlock.at(context.getLevel(), context.getClickedPos()), player, CraftBlockData.fromData(state), defaultReturn, org.bukkit.craftbukkit.CraftEquipmentSlot.getHand(context.getHand())); // Paper - expose hand
context.getLevel().getCraftServer().getPluginManager().callEvent(event);
return event.isBuildable();
diff --git a/src/main/java/net/minecraft/world/item/StandingAndWallBlockItem.java b/src/main/java/net/minecraft/world/item/StandingAndWallBlockItem.java
index 39b8b3675ac58409e05fac07e07c8016c5280d81..88072259a9de205db428351c5c9f6114e199e402 100644
--- a/src/main/java/net/minecraft/world/item/StandingAndWallBlockItem.java
+++ b/src/main/java/net/minecraft/world/item/StandingAndWallBlockItem.java
@@ -59,7 +59,7 @@ public class StandingAndWallBlockItem extends BlockItem {
boolean defaultReturn = world.isUnobstructed(iblockdata1, blockposition, CollisionContext.empty());
org.bukkit.entity.Player player = (context.getPlayer() instanceof ServerPlayer) ? (org.bukkit.entity.Player) context.getPlayer().getBukkitEntity() : null;
- BlockCanBuildEvent event = new BlockCanBuildEvent(CraftBlock.at(world, blockposition), player, CraftBlockData.fromData(iblockdata1), defaultReturn);
+ BlockCanBuildEvent event = new BlockCanBuildEvent(CraftBlock.at(world, blockposition), player, CraftBlockData.fromData(iblockdata1), defaultReturn, org.bukkit.craftbukkit.CraftEquipmentSlot.getHand(context.getHand())); // Paper - expose hand
context.getLevel().getCraftServer().getPluginManager().callEvent(event);
return (event.isBuildable()) ? iblockdata1 : null;
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