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47b9a5d178
Optimizes small movements by entities by merging the movement into the entities next larger movement, until enough movement velocity has been hit. This reduces collision detection and able to reduce movement cpu cost by 5-7%. The default option of 0.75 seems to provide all the gains without any noticable behavior change to entity movement. We have to exclude slimes due to weird jumping animation bugs.
114 lines
4.4 KiB
Diff
114 lines
4.4 KiB
Diff
From eb001bde1cff971c9a4e667ed42fb1bee8dc491c Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Thu, 1 Nov 2018 19:45:51 -0400
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Subject: [PATCH] Optimize Small Entity Movement
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Optimizes small movements by entities by merging the movement
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into the entities next larger movement, until enough movement
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velocity has been hit.
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This reduces collision detection and able to reduce movement
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cpu cost by 5-7%.
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The default option of 0.75 seems to provide all the gains without
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any noticable behavior change to entity movement.
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We have to exclude slimes due to weird jumping animation bugs.
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diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
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index eabb2c1bad..f6d4c476bc 100644
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--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
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+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
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@@ -569,4 +569,10 @@ public class PaperWorldConfig {
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private void preventMovingIntoUnloadedChunks() {
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preventMovingIntoUnloadedChunks = getBoolean("prevent-moving-into-unloaded-chunks", false);
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}
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+
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+ public double mergeEntityMovement = 0.075D;
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+ private void mergeEntityMovement() {
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+ mergeEntityMovement = getDouble("merge-entity-movement", mergeEntityMovement);
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+ }
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+
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}
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diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
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index 32b90f30d9..6023824e3d 100644
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--- a/src/main/java/net/minecraft/server/Entity.java
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+++ b/src/main/java/net/minecraft/server/Entity.java
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@@ -558,6 +558,15 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
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}
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+ // Paper start
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+ protected double pendingX = 0D;
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+ protected double pendingY = 0D;
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+ protected double pendingZ = 0D;
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+ public boolean shouldMergeMovement(int mergeMin, double d0, double d1, double d2) {
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+ return d0 * d0 < mergeMin && d1 * d1 < mergeMin && d2 * d2 < mergeMin;
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+ }
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+ // Paper end
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+
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public void extinguish() {
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this.fireTicks = 0;
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}
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@@ -580,6 +589,23 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
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this.a(this.getBoundingBox().d(d0, d1, d2));
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this.recalcPosition();
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} else {
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+ // Paper start
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+ final double mergeMin = this.world.paperConfig.mergeEntityMovement;
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+ if (mergeMin > 0 && enummovetype == EnumMoveType.SELF) {
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+ if (pendingX != 0D) {
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+ d0 += pendingX;
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+ pendingX = 0D;
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+ }
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+ if (pendingY != 0D) {
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+ d1 += pendingY;
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+ pendingY = 0D;
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+ }
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+ if (pendingZ != 0D) {
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+ d2 += pendingZ;
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+ pendingZ = 0D;
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+ }
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+ }
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+ // Paper end
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if (enummovetype == EnumMoveType.PISTON) {
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this.activatedTick = MinecraftServer.currentTick + 20; // Paper
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long i = this.world.getTime();
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@@ -683,6 +709,17 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
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}
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}
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+ // Paper start
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+ if (mergeMin > 0 && enummovetype == EnumMoveType.SELF && shouldMergeMovement(mergeMin, d0, d1, d2)) {
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+ pendingX = d0;
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+ pendingY = d1;
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+ pendingZ = d2;
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+ d0 = d7 = 0;
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+ d1 = d8 = 0;
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+ d2 = d9 = 0;
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+ }
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+ // Paper end
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+
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AxisAlignedBB axisalignedbb = this.getBoundingBox();
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if (d0 != 0.0D || d1 != 0.0D || d2 != 0.0D) {
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diff --git a/src/main/java/net/minecraft/server/EntitySlime.java b/src/main/java/net/minecraft/server/EntitySlime.java
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index e63f4afa9b..1941faaebd 100644
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--- a/src/main/java/net/minecraft/server/EntitySlime.java
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+++ b/src/main/java/net/minecraft/server/EntitySlime.java
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@@ -495,6 +495,12 @@ public class EntitySlime extends EntityInsentient implements IMonster {
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}
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// Paper start
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+ @Override
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+ public boolean shouldMergeMovement(int mergeMin, double d0, double d1, double d2) {
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+ // Slimes have weird movement bugs when a move is skipped, ideally we can fix this and fix that state
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+ return false;
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+ }
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+
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private boolean canWander = true;
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public boolean canWander() {
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return canWander;
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--
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2.19.1
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