PaperMC/patches/server/0333-MC-145656-Fix-Follow-Range-Initial-Target.patch
Spottedleaf 01a13871de
Rewrite chunk system (#8177)
Patch documentation to come

Issues with the old system that are fixed now:
- World generation does not scale with cpu cores effectively.
- Relies on the main thread for scheduling and maintaining chunk state, dropping chunk load/generate rates at lower tps.
- Unreliable prioritisation of chunk gen/load calls that block the main thread.
- Shutdown logic is utterly unreliable, as it has to wait for all chunks to unload - is it guaranteed that the chunk system is in a state on shutdown that it can reliably do this? Watchdog shutdown also typically failed due to thread checks, which is now resolved.
- Saving of data is not unified (i.e can save chunk data without saving entity data, poses problems for desync if shutdown is really abnormal.
- Entities are not loaded with chunks. This caused quite a bit of headache for Chunk#getEntities API, but now the new chunk system loads entities with chunks so that they are ready whenever the chunk loads in. Effectively brings the behavior back to 1.16 era, but still storing entities in their own separate regionfiles.

The above list is not complete. The patch documentation will complete it.

New chunk system hard relies on starlight and dataconverter, and most importantly the new concurrent utilities in ConcurrentUtil.

Some of the old async chunk i/o interface (i.e the old file io thread reroutes _some_ calls to the new file io thread) is kept for plugin compat reasons. It will be removed in the next major version of minecraft.

The old legacy chunk system patches have been moved to the removed folder in case we need them again.
2022-09-26 01:02:51 -07:00

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Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <Blake.Galbreath@GMail.com>
Date: Wed, 18 Dec 2019 22:21:35 -0600
Subject: [PATCH] MC-145656 Fix Follow Range Initial Target
diff --git a/src/main/java/net/minecraft/world/entity/ai/goal/target/NearestAttackableTargetGoal.java b/src/main/java/net/minecraft/world/entity/ai/goal/target/NearestAttackableTargetGoal.java
index 638942d54c6ea2d305350a330ac9fb8b82294f53..7f4fb6ad4b3b3da52a111b0c58499f27d8443124 100644
--- a/src/main/java/net/minecraft/world/entity/ai/goal/target/NearestAttackableTargetGoal.java
+++ b/src/main/java/net/minecraft/world/entity/ai/goal/target/NearestAttackableTargetGoal.java
@@ -38,6 +38,7 @@ public class NearestAttackableTargetGoal<T extends LivingEntity> extends TargetG
this.randomInterval = reducedTickDelay(reciprocalChance);
this.setFlags(EnumSet.of(Goal.Flag.TARGET));
this.targetConditions = TargetingConditions.forCombat().range(this.getFollowDistance()).selector(targetPredicate);
+ if (mob.level.paperConfig().entities.entitiesTargetWithFollowRange) this.targetConditions.useFollowRange(); // Paper
}
@Override
diff --git a/src/main/java/net/minecraft/world/entity/ai/targeting/TargetingConditions.java b/src/main/java/net/minecraft/world/entity/ai/targeting/TargetingConditions.java
index 9f65f6cdbcc054bde03c42d7d3b16f65b93e5deb..a7575b5ef56af6f53448d391abb4956e130148ca 100644
--- a/src/main/java/net/minecraft/world/entity/ai/targeting/TargetingConditions.java
+++ b/src/main/java/net/minecraft/world/entity/ai/targeting/TargetingConditions.java
@@ -76,7 +76,7 @@ public class TargetingConditions {
if (this.range > 0.0D) {
double d = this.testInvisible ? targetEntity.getVisibilityPercent(baseEntity) : 1.0D;
- double e = Math.max(this.range * d, 2.0D);
+ double e = Math.max((this.useFollowRange ? this.getFollowRange(baseEntity) : this.range) * d, 2.0D); // Paper
double f = baseEntity.distanceToSqr(targetEntity.getX(), targetEntity.getY(), targetEntity.getZ());
if (f > e * e) {
return false;
@@ -94,4 +94,18 @@ public class TargetingConditions {
return true;
}
}
+
+ // Paper start
+ private boolean useFollowRange = false;
+
+ public TargetingConditions useFollowRange() {
+ this.useFollowRange = true;
+ return this;
+ }
+
+ private double getFollowRange(LivingEntity entityliving) {
+ net.minecraft.world.entity.ai.attributes.AttributeInstance attributeinstance = entityliving.getAttribute(net.minecraft.world.entity.ai.attributes.Attributes.FOLLOW_RANGE);
+ return attributeinstance == null ? 16.0D : attributeinstance.getValue();
+ }
+ // Paper end
}