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c5a10665b8
Spigot still maintains some partial implementation of "tick skipping", a practice in which the MinecraftServer.currentTick field is updated not by an increment of one per actual tick, but instead set to System.currentTimeMillis() / 50. This behaviour means that the tracked tick may "skip" a tick value in case a previous tick took more than the expected 50ms. To compensate for this in important paths, spigot/craftbukkit implements "wall-time". Instead of incrementing/decrementing ticks on block entities/entities by one for each call to their tick() method, they instead increment/decrement important values, like an ItemEntity's age or pickupDelay, by the difference of `currentTick - lastTick`, where `lastTick` is the value of `currentTick` during the last tick() call. These "fixes" however do not play nicely with minecraft's simulation distance as entities/block entities implementing the above behaviour would "catch up" their values when moving from a non-ticking chunk to a ticking one as their `lastTick` value remains stuck on the last tick in a ticking chunk and hence lead to a large "catch up" once ticked again. Paper completely removes the "tick skipping" behaviour (See patch "Further-improve-server-tick-loop"), making the above precautions completely unnecessary, which also rids paper of the previous described incompatibility with non-ticking chunks.
46 lines
3.2 KiB
Diff
46 lines
3.2 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Madeline Miller <mnmiller1@me.com>
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Date: Sun, 17 Jan 2021 13:16:09 +1000
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Subject: [PATCH] Add BlockPreDispenseEvent
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diff --git a/src/main/java/net/minecraft/world/level/block/DispenserBlock.java b/src/main/java/net/minecraft/world/level/block/DispenserBlock.java
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index 94bcbaf7daf7dfe566f508d1170a433930d9d49a..f6edfea463b3725d3a79aca38825e86dbf82175c 100644
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--- a/src/main/java/net/minecraft/world/level/block/DispenserBlock.java
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+++ b/src/main/java/net/minecraft/world/level/block/DispenserBlock.java
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@@ -110,6 +110,7 @@ public class DispenserBlock extends BaseEntityBlock {
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DispenseItemBehavior idispensebehavior = this.getDispenseMethod(world, itemstack);
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if (idispensebehavior != DispenseItemBehavior.NOOP) {
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+ if (!org.bukkit.craftbukkit.event.CraftEventFactory.handleBlockPreDispenseEvent(world, pos, itemstack, i)) return; // Paper - Add BlockPreDispenseEvent
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DispenserBlock.eventFired = false; // CraftBukkit - reset event status
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tileentitydispenser.setItem(i, idispensebehavior.dispense(sourceblock, itemstack));
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}
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diff --git a/src/main/java/net/minecraft/world/level/block/DropperBlock.java b/src/main/java/net/minecraft/world/level/block/DropperBlock.java
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index 91b514967405115f22edf4255775361a672e5c2f..ddecf443df3679e3098eb54edd19585a0512e342 100644
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--- a/src/main/java/net/minecraft/world/level/block/DropperBlock.java
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+++ b/src/main/java/net/minecraft/world/level/block/DropperBlock.java
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@@ -71,6 +71,7 @@ public class DropperBlock extends DispenserBlock {
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ItemStack itemstack1;
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if (iinventory == null) {
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+ if (!org.bukkit.craftbukkit.event.CraftEventFactory.handleBlockPreDispenseEvent(world, pos, itemstack, i)) return; // Paper - Add BlockPreDispenseEvent
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itemstack1 = DropperBlock.DISPENSE_BEHAVIOUR.dispense(sourceblock, itemstack);
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} else {
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// CraftBukkit start - Fire event when pushing items into other inventories
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diff --git a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
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index 9e67dc35ea12149265517b951a96828460b2ca67..251b605396b77b0c449972c1da75978f57587e1a 100644
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--- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
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+++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
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@@ -2134,5 +2134,11 @@ public class CraftEventFactory {
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io.papermc.paper.event.block.BlockFailedDispenseEvent event = new io.papermc.paper.event.block.BlockFailedDispenseEvent(block);
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return event.callEvent();
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}
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+
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+ public static boolean handleBlockPreDispenseEvent(ServerLevel serverLevel, BlockPos pos, ItemStack itemStack, int slot) {
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+ org.bukkit.block.Block block = CraftBlock.at(serverLevel, pos);
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+ io.papermc.paper.event.block.BlockPreDispenseEvent event = new io.papermc.paper.event.block.BlockPreDispenseEvent(block, org.bukkit.craftbukkit.inventory.CraftItemStack.asCraftMirror(itemStack), slot);
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+ return event.callEvent();
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+ }
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// Paper end
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}
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