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Paper/patches/server/0753-Add-entity-knockback-API.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

24 Zeilen
1.2 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: MelnCat <melncatuwu@gmail.com>
Date: Sun, 16 Oct 2022 12:10:17 -0700
Subject: [PATCH] Add entity knockback API
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
index ae3bf4adc93ebd5a3d19536ac0e0889599aa4e6b..2b53f1daa4f22ee1b52443ae8589c62807d22903 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
@@ -1103,4 +1103,12 @@ public class CraftLivingEntity extends CraftEntity implements LivingEntity {
throw new UnsupportedOperationException("Cannot set the hurt direction on a non player");
}
// Paper end - hurt direction API
+
+ // Paper start - knockback API
+ @Override
+ public void knockback(final double strength, final double directionX, final double directionZ) {
+ Preconditions.checkArgument(strength > 0, "Knockback strength must be > 0");
+ this.getHandle().knockback(strength, directionX, directionZ);
+ };
+ // Paper end - knockback API
}