Paper/patches/server/0473-Collision-option-for-requiring-a-player-participant.patch
Bjarne Koll c5a10665b8
Remove wall-time / unused skip tick protection (#11412)
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.
2024-09-19 16:36:07 +02:00

43 lines
3.2 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Mariell Hoversholm <proximyst@proximyst.com>
Date: Sat, 14 Nov 2020 16:48:37 +0100
Subject: [PATCH] Collision option for requiring a player participant
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index bed376337035545e7ec677f2f7fe3372a3c9ea25..7d131f3b3f5739468aa3115e97ed28b6bfeca33d 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -1936,6 +1936,7 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
public void push(Entity entity) {
if (!this.isPassengerOfSameVehicle(entity)) {
if (!entity.noPhysics && !this.noPhysics) {
+ if (this.level.paperConfig().collisions.onlyPlayersCollide && !(entity instanceof ServerPlayer || this instanceof ServerPlayer)) return; // Paper - Collision option for requiring a player participant
double d0 = entity.getX() - this.getX();
double d1 = entity.getZ() - this.getZ();
double d2 = Mth.absMax(d0, d1);
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 4d8c14d3a42f3e4b963cf5f8fa764df79813912b..93634fb01962ca7a35026e3c365f2a7f6b258a39 100644
--- a/src/main/java/net/minecraft/world/entity/vehicle/AbstractMinecart.java
+++ b/src/main/java/net/minecraft/world/entity/vehicle/AbstractMinecart.java
@@ -799,6 +799,7 @@ public abstract class AbstractMinecart extends VehicleEntity {
public void push(Entity entity) {
if (!this.level().isClientSide) {
if (!entity.noPhysics && !this.noPhysics) {
+ if (!this.level().paperConfig().collisions.allowVehicleCollisions && this.level().paperConfig().collisions.onlyPlayersCollide && !(entity instanceof Player)) return; // Paper - Collision option for requiring a player participant
if (!this.hasPassenger(entity)) {
// CraftBukkit start
VehicleEntityCollisionEvent collisionEvent = new VehicleEntityCollisionEvent((Vehicle) this.getBukkitEntity(), entity.getBukkitEntity());
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 2cb535639bff0e867c1b1e845fee6e34bb237044..907f751c859855484151fb5d607acee2f2a35076 100644
--- a/src/main/java/net/minecraft/world/entity/vehicle/Boat.java
+++ b/src/main/java/net/minecraft/world/entity/vehicle/Boat.java
@@ -204,6 +204,7 @@ public class Boat extends VehicleEntity implements Leashable, VariantHolder<Boat
@Override
public void push(Entity entity) {
+ if (!this.level().paperConfig().collisions.allowVehicleCollisions && this.level().paperConfig().collisions.onlyPlayersCollide && !(entity instanceof Player)) return; // Paper - Collision option for requiring a player participant
if (entity instanceof Boat) {
if (entity.getBoundingBox().minY < this.getBoundingBox().maxY) {
// CraftBukkit start