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PaperMC/patches/server-remapped/0679-do-not-create-unnecessary-copies-of-passenger-list.patch
Mariell Hoversholm a207d14a0e
Rename all patches to correct numbering scheme 
Signed-off-by: Mariell Hoversholm <proximyst@proximyst.com>
2021-06-11 15:46:44 +02:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: lukas81298 <lukas81298@gmail.com>
Date: Sun, 13 Dec 2020 13:42:55 +0100
Subject: [PATCH] do not create unnecessary copies of passenger list
diff --git a/src/main/java/net/minecraft/network/protocol/game/ClientboundSetPassengersPacket.java b/src/main/java/net/minecraft/network/protocol/game/ClientboundSetPassengersPacket.java
index a6ecb82d14ccab5d8229689a2a6cb67c579b1f71..cded79352dff0978e0d633eae9d9020b4dec1d4b 100644
--- a/src/main/java/net/minecraft/network/protocol/game/ClientboundSetPassengersPacket.java
+++ b/src/main/java/net/minecraft/network/protocol/game/ClientboundSetPassengersPacket.java
@@ -15,7 +15,7 @@ public class ClientboundSetPassengersPacket implements Packet<ClientGamePacketLi
public ClientboundSetPassengersPacket(Entity entity) {
this.vehicle = entity.getId();
- List<Entity> list = entity.getPassengers();
+ List<Entity> list = entity.passengers; // Paper - do not create a copy of the list
this.passengers = new int[list.size()];
diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
index f4dd30c8b3326db72d3b3068ee2291de6f15de7c..c17e827a976f509c8294df65335f12139cd36a9f 100644
--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
+++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
@@ -2312,7 +2312,7 @@ Sections go from 0..16. Now whenever a section is not empty, it can potentially
list.add(entity);
}
- if (!entity.getPassengers().isEmpty()) {
+ if (!entity.passengers.isEmpty()) { // Paper - do not copy list
list1.add(entity);
}
}
diff --git a/src/main/java/net/minecraft/server/level/ServerEntity.java b/src/main/java/net/minecraft/server/level/ServerEntity.java
index 75e2274578c2c28de3d786372df0b4102337a2cc..e703233db7879c73378b3a06b2e89f7fcea97979 100644
--- a/src/main/java/net/minecraft/server/level/ServerEntity.java
+++ b/src/main/java/net/minecraft/server/level/ServerEntity.java
@@ -102,10 +102,10 @@ public class ServerEntity {
public final void tick() { this.sendChanges(); } // Paper - OBFHELPER
public void sendChanges() {
- List<Entity> list = this.entity.getPassengers();
+ List<Entity> list = this.entity.passengers; // Paper - do not copy list
if (!list.equals(this.lastPassengers)) {
- this.lastPassengers = list;
+ this.lastPassengers = com.google.common.collect.ImmutableList.copyOf(list); // Paper - only copy list if something has changed
this.broadcastAndSend(new ClientboundSetPassengersPacket(this.entity)); // CraftBukkit
}
@@ -375,7 +375,7 @@ public class ServerEntity {
}
}
- if (!this.entity.getPassengers().isEmpty()) {
+ if (!this.entity.passengers.isEmpty()) { // Paper - do not create copy of list
consumer.accept(new ClientboundSetPassengersPacket(this.entity));
}
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index ec30f886585d407fbd122e05107ebca44895c585..d055b362459e5b4658aa220e16118ee6174c0de4 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -2233,7 +2233,7 @@ public abstract class Entity implements Nameable, CommandSource, net.minecraft.s
}
protected boolean canAddPassenger(Entity passenger) {
- return this.getPassengers().size() < 1;
+ return this.passengers.size() < 1; // Paper - do not copy list
}
public final float getCollisionBorderSize() { return getPickRadius(); } // Paper - OBFHELPER
@@ -2329,7 +2329,7 @@ public abstract class Entity implements Nameable, CommandSource, net.minecraft.s
}
public boolean isVehicle() {
- return !this.getPassengers().isEmpty();
+ return !this.passengers.isEmpty(); // Paper - do not copy list
}
public boolean rideableUnderWater() {
@@ -3141,7 +3141,7 @@ public abstract class Entity implements Nameable, CommandSource, net.minecraft.s
}
public boolean hasPassenger(Entity passenger) {
- Iterator iterator = this.getPassengers().iterator();
+ Iterator iterator = this.passengers.iterator(); // Paper - do not copy list
Entity entity1;
@@ -3157,7 +3157,7 @@ public abstract class Entity implements Nameable, CommandSource, net.minecraft.s
}
public boolean hasPassenger(Class<? extends Entity> clazz) {
- Iterator iterator = this.getPassengers().iterator();
+ Iterator iterator = this.passengers.iterator(); // Paper - do not copy list
Entity entity;
@@ -3174,7 +3174,7 @@ public abstract class Entity implements Nameable, CommandSource, net.minecraft.s
public Collection<Entity> getIndirectPassengers() {
Set<Entity> set = Sets.newHashSet();
- Iterator iterator = this.getPassengers().iterator();
+ Iterator iterator = this.passengers.iterator(); // Paper - do not copy list
while (iterator.hasNext()) {
Entity entity = (Entity) iterator.next();
@@ -3200,7 +3200,7 @@ public abstract class Entity implements Nameable, CommandSource, net.minecraft.s
private void fillIndirectPassengers(boolean playersOnly, Set<Entity> output) {
Entity entity;
- for (Iterator iterator = this.getPassengers().iterator(); iterator.hasNext(); entity.fillIndirectPassengers(playersOnly, output)) {
+ for (Iterator iterator = this.passengers.iterator(); iterator.hasNext(); entity.fillIndirectPassengers(playersOnly, output)) { // Paper - do not copy list
entity = (Entity) iterator.next();
if (!playersOnly || ServerPlayer.class.isAssignableFrom(entity.getClass())) {
output.add(entity);
diff --git a/src/main/java/net/minecraft/world/entity/ai/goal/RunAroundLikeCrazyGoal.java b/src/main/java/net/minecraft/world/entity/ai/goal/RunAroundLikeCrazyGoal.java
index 3d919e878908e19d598d70011c44cf980676f4f8..debf53a8bf6f062a237160a7b7e0a251a9756ef6 100644
--- a/src/main/java/net/minecraft/world/entity/ai/goal/RunAroundLikeCrazyGoal.java
+++ b/src/main/java/net/minecraft/world/entity/ai/goal/RunAroundLikeCrazyGoal.java
@@ -52,7 +52,7 @@ public class RunAroundLikeCrazyGoal extends Goal {
@Override
public void tick() {
if (!this.horse.isTamed() && this.horse.getRandom().nextInt(50) == 0) {
- Entity entity = (Entity) this.horse.getPassengers().get(0);
+ Entity entity = this.horse.passengers.isEmpty() ? null : this.horse.passengers.get(0); // Paper - do not copy list, fixed array out of bounds exception as well
if (entity == null) {
return;
diff --git a/src/main/java/net/minecraft/world/entity/animal/Pig.java b/src/main/java/net/minecraft/world/entity/animal/Pig.java
index e512a38ccbba93266f0234e3b2fcf7f62693039b..7a60c0b2c301e8cb768c39ad20f273a5921428cb 100644
--- a/src/main/java/net/minecraft/world/entity/animal/Pig.java
+++ b/src/main/java/net/minecraft/world/entity/animal/Pig.java
@@ -85,7 +85,7 @@ public class Pig extends Animal implements ItemSteerable, Saddleable {
@Nullable
@Override
public Entity getControllingPassenger() {
- return this.getPassengers().isEmpty() ? null : (Entity) this.getPassengers().get(0);
+ return this.passengers.isEmpty() ? null : (Entity) this.passengers.get(0); // Paper - do not copy list
}
@Override
diff --git a/src/main/java/net/minecraft/world/entity/animal/horse/AbstractHorse.java b/src/main/java/net/minecraft/world/entity/animal/horse/AbstractHorse.java
index b298bcfb665b1036cd21445cec1518069eb08f06..5901e92a749af50166c517bda575d541554756f5 100644
--- a/src/main/java/net/minecraft/world/entity/animal/horse/AbstractHorse.java
+++ b/src/main/java/net/minecraft/world/entity/animal/horse/AbstractHorse.java
@@ -971,7 +971,7 @@ public abstract class AbstractHorse extends Animal implements ContainerListener,
@Nullable
@Override
public Entity getControllingPassenger() {
- return this.getPassengers().isEmpty() ? null : (Entity) this.getPassengers().get(0);
+ return this.passengers.isEmpty() ? null : (Entity) this.passengers.get(0); // Paper - do not copy list
}
@Nullable
diff --git a/src/main/java/net/minecraft/world/entity/monster/Ravager.java b/src/main/java/net/minecraft/world/entity/monster/Ravager.java
index e50d72c98f2ee3cd3349d2df9a0cdc47b733f7cd..ccc9d941b28ee090436a5958e1b48589d48d9d6f 100644
--- a/src/main/java/net/minecraft/world/entity/monster/Ravager.java
+++ b/src/main/java/net/minecraft/world/entity/monster/Ravager.java
@@ -134,7 +134,7 @@ public class Ravager extends Raider {
@Nullable
@Override
public Entity getControllingPassenger() {
- return this.getPassengers().isEmpty() ? null : (Entity) this.getPassengers().get(0);
+ return this.passengers.isEmpty() ? null : (Entity) this.passengers.get(0); // Paper - do not copy list
}
@Override
diff --git a/src/main/java/net/minecraft/world/entity/vehicle/AbstractMinecart.java b/src/main/java/net/minecraft/world/entity/vehicle/AbstractMinecart.java
index 25df3ef6b96bec39847a732394af8eccdb4d5d45..23421c4964c67a963a55ce08595c8de112a2ba6e 100644
--- a/src/main/java/net/minecraft/world/entity/vehicle/AbstractMinecart.java
+++ b/src/main/java/net/minecraft/world/entity/vehicle/AbstractMinecart.java
@@ -560,7 +560,7 @@ public abstract class AbstractMinecart extends Entity {
vec3d1 = new Vec3(d8 * d4 / d6, vec3d1.y, d8 * d5 / d6);
this.setDeltaMovement(vec3d1);
- Entity entity = this.getPassengers().isEmpty() ? null : (Entity) this.getPassengers().get(0);
+ Entity entity = this.passengers.isEmpty() ? null : (Entity) this.passengers.get(0); // Paper - do not copy list
if (entity instanceof Player) {
Vec3 vec3d2 = entity.getDeltaMovement();
diff --git a/src/main/java/net/minecraft/world/entity/vehicle/Boat.java b/src/main/java/net/minecraft/world/entity/vehicle/Boat.java
index e7ac3bff190c899397d6576fabbf4966878ea7e5..37f0e359ec858eebfa15d01f23a9ce0103816c8b 100644
--- a/src/main/java/net/minecraft/world/entity/vehicle/Boat.java
+++ b/src/main/java/net/minecraft/world/entity/vehicle/Boat.java
@@ -316,7 +316,7 @@ public class Boat extends Entity {
super.tick();
this.tickLerp();
if (this.isControlledByLocalInstance()) {
- if (this.getPassengers().isEmpty() || !(this.getPassengers().get(0) instanceof Player)) {
+ if (this.passengers.isEmpty() || !(this.passengers.get(0) instanceof Player)) { // Paper - do not copy list
this.setPaddleState(false, false);
}
@@ -379,7 +379,7 @@ public class Boat extends Entity {
Entity entity = (Entity) list.get(j);
if (!entity.hasPassenger(this)) {
- if (flag && this.getPassengers().size() < 2 && !entity.isPassenger() && entity.getBbWidth() < this.getBbWidth() && entity instanceof LivingEntity && !(entity instanceof WaterAnimal) && !(entity instanceof Player)) {
+ if (flag && this.passengers.size() < 2 && !entity.isPassenger() && entity.getBbWidth() < this.getBbWidth() && entity instanceof LivingEntity && !(entity instanceof WaterAnimal) && !(entity instanceof Player)) { // Paper - do not copy passenger list
entity.startRiding(this);
} else {
this.push(entity);
@@ -726,8 +726,8 @@ public class Boat extends Entity {
float f = 0.0F;
float f1 = (float) ((this.removed ? 0.009999999776482582D : this.getPassengersRidingOffset()) + passenger.getMyRidingOffset());
- if (this.getPassengers().size() > 1) {
- int i = this.getPassengers().indexOf(passenger);
+ if (this.passengers.size() > 1) { // Paper - do not copy list
+ int i = this.passengers.indexOf(passenger); // Paper - do not copy list
if (i == 0) {
f = 0.2F;
@@ -746,7 +746,7 @@ public class Boat extends Entity {
passenger.yRot += this.deltaRotation;
passenger.setYHeadRot(passenger.getYHeadRot() + this.deltaRotation);
this.clampRotation(passenger);
- if (passenger instanceof Animal && this.getPassengers().size() > 1) {
+ if (passenger instanceof Animal && this.passengers.size() > 1) { // Paper - do not copy list
int j = passenger.getId() % 2 == 0 ? 90 : 270;
passenger.setYBodyRot(((Animal) passenger).yBodyRot + (float) j);
@@ -906,13 +906,13 @@ public class Boat extends Entity {
@Override
protected boolean canAddPassenger(Entity passenger) {
- return this.getPassengers().size() < 2 && !this.isEyeInFluid((Tag) FluidTags.WATER);
+ return this.passengers.size() < 2 && !this.isEyeInFluid((Tag) FluidTags.WATER); // Paper - do not copy list
}
@Nullable
@Override
public Entity getControllingPassenger() {
- List<Entity> list = this.getPassengers();
+ List<Entity> list = this.passengers; // Paper - do not copy list
return list.isEmpty() ? null : (Entity) list.get(0);
}
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