mirror of
https://github.com/PaperMC/Paper.git
synced 2024-12-03 05:26:50 +01:00
163 lines
9.1 KiB
Diff
163 lines
9.1 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Bjarne Koll <lynxplay101@gmail.com>
|
|
Date: Mon, 16 Sep 2024 23:07:29 +0200
|
|
Subject: [PATCH] Remove wall-time / unused skip tick protection
|
|
|
|
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.
|
|
|
|
diff --git a/src/main/java/net/minecraft/world/entity/item/ItemEntity.java b/src/main/java/net/minecraft/world/entity/item/ItemEntity.java
|
|
index 03cfa29bdb426a9fb6b1b6be6e897da48d4f2f3e..4423973d4d9a2c3879d98d1d4c8b8c117c677ac5 100644
|
|
--- a/src/main/java/net/minecraft/world/entity/item/ItemEntity.java
|
|
+++ b/src/main/java/net/minecraft/world/entity/item/ItemEntity.java
|
|
@@ -60,7 +60,7 @@ public class ItemEntity extends Entity implements TraceableEntity {
|
|
@Nullable
|
|
public UUID target;
|
|
public final float bobOffs;
|
|
- private int lastTick = MinecraftServer.currentTick - 1; // CraftBukkit
|
|
+ // private int lastTick = MinecraftServer.currentTick - 1; // CraftBukkit // Paper - remove anti tick skipping measures / wall time
|
|
public boolean canMobPickup = true; // Paper - Item#canEntityPickup
|
|
private int despawnRate = -1; // Paper - Alternative item-despawn-rate
|
|
public net.kyori.adventure.util.TriState frictionState = net.kyori.adventure.util.TriState.NOT_SET; // Paper - Friction API
|
|
@@ -153,12 +153,11 @@ public class ItemEntity extends Entity implements TraceableEntity {
|
|
this.discard(EntityRemoveEvent.Cause.DESPAWN); // CraftBukkit - add Bukkit remove cause
|
|
} else {
|
|
super.tick();
|
|
- // CraftBukkit start - Use wall time for pickup and despawn timers
|
|
- int elapsedTicks = MinecraftServer.currentTick - this.lastTick;
|
|
- if (this.pickupDelay != 32767) this.pickupDelay -= elapsedTicks;
|
|
- if (this.age != -32768) this.age += elapsedTicks;
|
|
- this.lastTick = MinecraftServer.currentTick;
|
|
- // CraftBukkit end
|
|
+ // Paper start - remove anti tick skipping measures / wall time - revert to vanilla
|
|
+ if (this.pickupDelay > 0 && this.pickupDelay != 32767) {
|
|
+ --this.pickupDelay;
|
|
+ }
|
|
+ // Paper end - remove anti tick skipping measures / wall time - revert to vanilla
|
|
|
|
this.xo = this.getX();
|
|
this.yo = this.getY();
|
|
@@ -211,7 +210,7 @@ public class ItemEntity extends Entity implements TraceableEntity {
|
|
this.mergeWithNeighbours();
|
|
}
|
|
|
|
- /* CraftBukkit start - moved up
|
|
+ // Paper - remove anti tick skipping measures / wall time - revert to vanilla /* CraftBukkit start - moved up
|
|
if (this.age != -32768) {
|
|
++this.age;
|
|
}
|
|
@@ -242,12 +241,14 @@ public class ItemEntity extends Entity implements TraceableEntity {
|
|
// Spigot start - copied from above
|
|
@Override
|
|
public void inactiveTick() {
|
|
- // CraftBukkit start - Use wall time for pickup and despawn timers
|
|
- int elapsedTicks = MinecraftServer.currentTick - this.lastTick;
|
|
- if (this.pickupDelay != 32767) this.pickupDelay -= elapsedTicks;
|
|
- if (this.age != -32768) this.age += elapsedTicks;
|
|
- this.lastTick = MinecraftServer.currentTick;
|
|
- // CraftBukkit end
|
|
+ // Paper start - remove anti tick skipping measures / wall time - copied from above
|
|
+ if (this.pickupDelay > 0 && this.pickupDelay != 32767) {
|
|
+ --this.pickupDelay;
|
|
+ }
|
|
+ if (this.age != -32768) {
|
|
+ ++this.age;
|
|
+ }
|
|
+ // Paper end - remove anti tick skipping measures / wall time - copied from above
|
|
|
|
if (!this.level().isClientSide && this.age >= this.despawnRate) { // Spigot // Paper - Alternative item-despawn-rate
|
|
// CraftBukkit start - fire ItemDespawnEvent
|
|
diff --git a/src/main/java/net/minecraft/world/entity/monster/Zombie.java b/src/main/java/net/minecraft/world/entity/monster/Zombie.java
|
|
index 2280004638fd19ed018cb3e77d53a018b34ec516..2b43337ac63d051718a2074fcc46e128a1d65129 100644
|
|
--- a/src/main/java/net/minecraft/world/entity/monster/Zombie.java
|
|
+++ b/src/main/java/net/minecraft/world/entity/monster/Zombie.java
|
|
@@ -96,7 +96,7 @@ public class Zombie extends Monster {
|
|
private boolean canBreakDoors;
|
|
private int inWaterTime;
|
|
public int conversionTime;
|
|
- private int lastTick = MinecraftServer.currentTick; // CraftBukkit - add field
|
|
+ // private int lastTick = MinecraftServer.currentTick; // CraftBukkit - add field // Paper - remove anti tick skipping measures / wall time
|
|
private boolean shouldBurnInDay = true; // Paper - Add more Zombie API
|
|
|
|
public Zombie(EntityType<? extends Zombie> type, Level world) {
|
|
@@ -219,10 +219,7 @@ public class Zombie extends Monster {
|
|
public void tick() {
|
|
if (!this.level().isClientSide && this.isAlive() && !this.isNoAi()) {
|
|
if (this.isUnderWaterConverting()) {
|
|
- // CraftBukkit start - Use wall time instead of ticks for conversion
|
|
- int elapsedTicks = MinecraftServer.currentTick - this.lastTick;
|
|
- this.conversionTime -= elapsedTicks;
|
|
- // CraftBukkit end
|
|
+ --this.conversionTime; // Paper - remove anti tick skipping measures / wall time
|
|
if (this.conversionTime < 0) {
|
|
this.doUnderWaterConversion();
|
|
}
|
|
@@ -239,7 +236,7 @@ public class Zombie extends Monster {
|
|
}
|
|
|
|
super.tick();
|
|
- this.lastTick = MinecraftServer.currentTick; // CraftBukkit
|
|
+ // this.lastTick = MinecraftServer.currentTick; // CraftBukkit // Paper - remove anti tick skipping measures / wall time
|
|
}
|
|
|
|
@Override
|
|
@@ -280,7 +277,7 @@ public class Zombie extends Monster {
|
|
}
|
|
// Paper end - Add more Zombie API
|
|
public void startUnderWaterConversion(int ticksUntilWaterConversion) {
|
|
- this.lastTick = MinecraftServer.currentTick; // CraftBukkit
|
|
+ // this.lastTick = MinecraftServer.currentTick; // CraftBukkit // Paper - remove anti tick skipping measures / wall time
|
|
this.conversionTime = ticksUntilWaterConversion;
|
|
this.getEntityData().set(Zombie.DATA_DROWNED_CONVERSION_ID, true);
|
|
}
|
|
diff --git a/src/main/java/net/minecraft/world/level/block/entity/BrewingStandBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/BrewingStandBlockEntity.java
|
|
index a2fafef89d5354e2cb02f5672810909950a57777..bf2c303a314205590a2839e0f729af3a9ff40a86 100644
|
|
--- a/src/main/java/net/minecraft/world/level/block/entity/BrewingStandBlockEntity.java
|
|
+++ b/src/main/java/net/minecraft/world/level/block/entity/BrewingStandBlockEntity.java
|
|
@@ -54,7 +54,7 @@ public class BrewingStandBlockEntity extends BaseContainerBlockEntity implements
|
|
public int fuel;
|
|
protected final ContainerData dataAccess;
|
|
// CraftBukkit start - add fields and methods
|
|
- private int lastTick = MinecraftServer.currentTick;
|
|
+ // private int lastTick = MinecraftServer.currentTick; // Paper - remove anti tick skipping measures / wall time
|
|
public List<HumanEntity> transaction = new java.util.ArrayList<HumanEntity>();
|
|
private int maxStack = MAX_STACK;
|
|
|
|
@@ -169,12 +169,10 @@ public class BrewingStandBlockEntity extends BaseContainerBlockEntity implements
|
|
boolean flag1 = blockEntity.brewTime > 0;
|
|
ItemStack itemstack1 = (ItemStack) blockEntity.items.get(3);
|
|
|
|
- // CraftBukkit start - Use wall time instead of ticks for brewing
|
|
- int elapsedTicks = MinecraftServer.currentTick - blockEntity.lastTick;
|
|
- blockEntity.lastTick = MinecraftServer.currentTick;
|
|
+ // Paper - remove anti tick skipping measures / wall time
|
|
|
|
if (flag1) {
|
|
- blockEntity.brewTime -= elapsedTicks;
|
|
+ --blockEntity.brewTime; // Paper - remove anti tick skipping measures / wall time - revert to vanilla
|
|
boolean flag2 = blockEntity.brewTime <= 0; // == -> <=
|
|
// CraftBukkit end
|
|
|