PaperMC/patches/unapplied/server/0604-Rate-options-and-timings-for-sensors-and-behaviors.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Phoenix616 <max@themoep.de>
Date: Mon, 28 Jun 2021 22:38:29 +0100
Subject: [PATCH] Rate options and timings for sensors and behaviors

This adds config options to specify the tick rate for sensors
 and behaviors of different entity types as well as timings
 for those in order to be able to have some metrics as to which
 ones might need tweaking.

diff --git a/src/main/java/co/aikar/timings/MinecraftTimings.java b/src/main/java/co/aikar/timings/MinecraftTimings.java
index 4bd813161a5d76a83cdbd0a9209b9ea9e60ffe1b..e2764186bd6b838ed5cd86c15597a08d079ef984 100644
--- a/src/main/java/co/aikar/timings/MinecraftTimings.java
+++ b/src/main/java/co/aikar/timings/MinecraftTimings.java
@@ -115,6 +115,14 @@ public final class MinecraftTimings {
         return Timings.ofSafe("Minecraft", "## tickEntity - " + entityType + " - " + type, tickEntityTimer);
     }
 
+    public static Timing getBehaviorTimings(String type) {
+        return Timings.ofSafe("## Behavior - " + type);
+    }
+
+    public static Timing getSensorTimings(String type, int rate) {
+        return Timings.ofSafe("## Sensor - " + type + " (Default rate: " + rate + ")");
+    }
+
     /**
      * Get a named timer for the specified tile entity type to track type specific timings.
      * @param entity
diff --git a/src/main/java/net/minecraft/world/entity/ai/behavior/Behavior.java b/src/main/java/net/minecraft/world/entity/ai/behavior/Behavior.java
index f639cafa64d98a001e622882c647701547f5c3ac..03092417cd8ab5c6d266f3af9f20f47b34cfaba3 100644
--- a/src/main/java/net/minecraft/world/entity/ai/behavior/Behavior.java
+++ b/src/main/java/net/minecraft/world/entity/ai/behavior/Behavior.java
@@ -14,6 +14,10 @@ public abstract class Behavior<E extends LivingEntity> implements BehaviorContro
     private long endTimestamp;
     private final int minDuration;
     private final int maxDuration;
+    // Paper start - configurable behavior tick rate and timings
+    private final String configKey;
+    private final co.aikar.timings.Timing timing;
+    // Paper end - configurable behavior tick rate and timings
 
     public Behavior(Map<MemoryModuleType<?>, MemoryStatus> requiredMemoryState) {
         this(requiredMemoryState, 60);
@@ -27,6 +31,15 @@ public abstract class Behavior<E extends LivingEntity> implements BehaviorContro
         this.minDuration = minRunTime;
         this.maxDuration = maxRunTime;
         this.entryCondition = requiredMemoryState;
+        // Paper start - configurable behavior tick rate and timings
+        String key = io.papermc.paper.util.ObfHelper.INSTANCE.deobfClassName(this.getClass().getName());
+        int lastSeparator = key.lastIndexOf('.');
+        if (lastSeparator != -1) {
+            key = key.substring(lastSeparator + 1);
+        }
+        this.configKey = key.toLowerCase(java.util.Locale.ROOT);
+        this.timing = co.aikar.timings.MinecraftTimings.getBehaviorTimings(configKey);
+        // Paper end - configurable behavior tick rate and timings
     }
 
     @Override
@@ -36,11 +49,19 @@ public abstract class Behavior<E extends LivingEntity> implements BehaviorContro
 
     @Override
     public final boolean tryStart(ServerLevel world, E entity, long time) {
+        // Paper start - configurable behavior tick rate and timings
+        int tickRate = java.util.Objects.requireNonNullElse(world.paperConfig().tickRates.behavior.get(entity.getType(), this.configKey), -1);
+        if (tickRate > -1 && time < this.endTimestamp + tickRate) {
+            return false;
+        }
+        // Paper end - configurable behavior tick rate and timings
         if (this.hasRequiredMemories(entity) && this.checkExtraStartConditions(world, entity)) {
             this.status = Behavior.Status.RUNNING;
             int i = this.minDuration + world.getRandom().nextInt(this.maxDuration + 1 - this.minDuration);
             this.endTimestamp = time + (long)i;
+            this.timing.startTiming(); // Paper - behavior timings
             this.start(world, entity, time);
+            this.timing.stopTiming(); // Paper - behavior timings
             return true;
         } else {
             return false;
@@ -52,11 +73,13 @@ public abstract class Behavior<E extends LivingEntity> implements BehaviorContro
 
     @Override
     public final void tickOrStop(ServerLevel world, E entity, long time) {
+        this.timing.startTiming(); // Paper - behavior timings
         if (!this.timedOut(time) && this.canStillUse(world, entity, time)) {
             this.tick(world, entity, time);
         } else {
             this.doStop(world, entity, time);
         }
+        this.timing.stopTiming(); // Paper - behavior timings
     }
 
     protected void tick(ServerLevel world, E entity, long time) {
diff --git a/src/main/java/net/minecraft/world/entity/ai/sensing/Sensor.java b/src/main/java/net/minecraft/world/entity/ai/sensing/Sensor.java
index 671fc7725d7c801a2ba009da5bd1bc1a9530f187..9e90cb2f51d1bacacb287e912d14ab9152523205 100644
--- a/src/main/java/net/minecraft/world/entity/ai/sensing/Sensor.java
+++ b/src/main/java/net/minecraft/world/entity/ai/sensing/Sensor.java
@@ -26,8 +26,21 @@ public abstract class Sensor<E extends LivingEntity> {
         .ignoreInvisibilityTesting();
     private final int scanRate;
     private long timeToTick;
+    // Paper start - configurable sensor tick rate and timings
+    private final String configKey;
+    private final co.aikar.timings.Timing timing;
+    // Paper end
 
     public Sensor(int senseInterval) {
+        // Paper start - configurable sensor tick rate and timings
+        String key = io.papermc.paper.util.ObfHelper.INSTANCE.deobfClassName(this.getClass().getName());
+        int lastSeparator = key.lastIndexOf('.');
+        if (lastSeparator != -1) {
+            key = key.substring(lastSeparator + 1);
+        }
+        this.configKey = key.toLowerCase(java.util.Locale.ROOT);
+        this.timing = co.aikar.timings.MinecraftTimings.getSensorTimings(configKey, senseInterval);
+        // Paper end
         this.scanRate = senseInterval;
         this.timeToTick = (long)RANDOM.nextInt(senseInterval);
     }
@@ -38,8 +51,12 @@ public abstract class Sensor<E extends LivingEntity> {
 
     public final void tick(ServerLevel world, E entity) {
         if (--this.timeToTick <= 0L) {
-            this.timeToTick = (long)this.scanRate;
+            // Paper start - configurable sensor tick rate and timings
+            this.timeToTick = java.util.Objects.requireNonNullElse(world.paperConfig().tickRates.sensor.get(entity.getType(), this.configKey), this.scanRate);
+            this.timing.startTiming();
+            // Paper end
             this.doTick(world, entity);
+            this.timing.stopTiming(); // Paper - sensor timings
         }
     }