Paper/patches/server/0837-Determine-lava-and-water-fluid-explosion-resistance-.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

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: galacticwarrior9 <zareef1@yahoo.com>
Date: Thu, 13 Jul 2023 21:32:13 +0100
Subject: [PATCH] Determine lava and water fluid explosion resistance by their
block explosion resistance
When selecting which explosion resistance to use for lava and water, vanilla selects the highest value between their block explosion resistance and fluid explosion resistance.
Problems emerge when we want to reduce the explosion resistance of water or lava, since the fluid explosion resistance is hardcoded to return 100.0F and can't be changed by a plugin. This simply makes the fluid explosion resistance the same as the block explosion resistance, which allows plugin to change the value. Since both are the same in vanilla, this has no side effects on servers that do not need to do this.
diff --git a/src/main/java/net/minecraft/world/level/material/LavaFluid.java b/src/main/java/net/minecraft/world/level/material/LavaFluid.java
index 72f8b72c6436ca3b8eaeb39c7d3efe2c1462ae1d..3bb4a9a1a6249e8ba2de237f801210e7f4fd5825 100644
--- a/src/main/java/net/minecraft/world/level/material/LavaFluid.java
+++ b/src/main/java/net/minecraft/world/level/material/LavaFluid.java
@@ -232,7 +232,7 @@ public abstract class LavaFluid extends FlowingFluid {
@Override
protected float getExplosionResistance() {
- return 100.0F;
+ return Blocks.LAVA.getExplosionResistance(); // Paper - Get explosion resistance from actual block
}
@Override
diff --git a/src/main/java/net/minecraft/world/level/material/WaterFluid.java b/src/main/java/net/minecraft/world/level/material/WaterFluid.java
index 21b4afd053e01073eb514264d4960f0f3b1ee3d8..109f71401c65f476ccf6813137386fc9fef10254 100644
--- a/src/main/java/net/minecraft/world/level/material/WaterFluid.java
+++ b/src/main/java/net/minecraft/world/level/material/WaterFluid.java
@@ -125,7 +125,7 @@ public abstract class WaterFluid extends FlowingFluid {
@Override
protected float getExplosionResistance() {
- return 100.0F;
+ return Blocks.WATER.getExplosionResistance(); // Paper - Get explosion resistance from actual block
}
@Override