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SakuraMC/patches/server/0007-Reduce-deltaMovement-Allocations.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Samsuik <kfian294ma4@gmail.com>
Date: Fri, 24 Mar 2023 16:29:21 +0000
Subject: [PATCH] Reduce deltaMovement Allocations
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index c33e325d7eb4584986de338f966a79e868ef300e..29e609be885944dbb4868e34e7eb83b8a136619c 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -1294,7 +1294,7 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
this.tryCheckInsideBlocks();
float f = this.getBlockSpeedFactor();
- this.setDeltaMovement(this.getDeltaMovement().multiply((double) f, 1.0D, (double) f));
+ this.multiplyDeltaMovement((double) f, 1.0D, (double) f); // Sakura - reduce movement allocations
// Paper start - remove expensive streams from here
boolean noneMatch = true;
AABB fireSearchBox = this.getBoundingBox().deflate(1.0E-6D);
@@ -1831,7 +1831,7 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
double d0 = this.getGravity();
if (d0 != 0.0D) {
- this.setDeltaMovement(this.getDeltaMovement().add(0.0D, -d0, 0.0D));
+ this.addDeltaMovement(0.0D, -d0, 0.0D); // Sakura - reduce movement allocations
}
}
@@ -2123,6 +2123,7 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
public void moveTo(double x, double y, double z, float yaw, float pitch) {
// Paper start - Fix Entity Teleportation and cancel velocity if teleported
if (!preserveMotion) {
+ this.movementDirty = false; // Sakura
this.deltaMovement = Vec3.ZERO;
} else {
this.preserveMotion = false;
@@ -3525,29 +3526,33 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
}
public void onAboveBubbleCol(boolean drag) {
- Vec3 vec3d = this.getDeltaMovement();
+ // Sakura start - reduce movement allocations
+ // Vec3 vec3d = this.getDeltaMovement();
+ this.syncDeltaMovement();
double d0;
if (drag) {
- d0 = Math.max(-0.9D, vec3d.y - 0.03D);
+ d0 = Math.max(-0.9D, movementY - 0.03D);
} else {
- d0 = Math.min(1.8D, vec3d.y + 0.1D);
+ d0 = Math.min(1.8D, movementY + 0.1D);
}
- this.setDeltaMovement(vec3d.x, d0, vec3d.z);
+ this.setDeltaMovement(movementX, d0, movementZ);
}
public void onInsideBubbleColumn(boolean drag) {
- Vec3 vec3d = this.getDeltaMovement();
+ // Vec3 vec3d = this.getDeltaMovement();
+ this.syncDeltaMovement();
double d0;
if (drag) {
- d0 = Math.max(-0.3D, vec3d.y - 0.03D);
+ d0 = Math.max(-0.3D, movementY - 0.03D);
} else {
- d0 = Math.min(0.7D, vec3d.y + 0.06D);
+ d0 = Math.min(0.7D, movementY + 0.06D);
}
- this.setDeltaMovement(vec3d.x, d0, vec3d.z);
+ this.setDeltaMovement(movementX, d0, movementZ);
+ // Sakura end
this.resetFallDistance();
}
@@ -4546,16 +4551,19 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
vec3d = vec3d.normalize();
}
- Vec3 vec3d2 = this.getDeltaMovement();
+ // Sakura start - reduce movement allocations
+ // Vec3 vec3d2 = this.getDeltaMovement();
+ this.syncDeltaMovement();
vec3d = vec3d.scale(speed * 1.0D);
double d3 = 0.003D;
- if (Math.abs(vec3d2.x) < 0.003D && Math.abs(vec3d2.z) < 0.003D && vec3d.length() < 0.0045000000000000005D) {
+ if (Math.abs(movementX) < 0.003D && Math.abs(movementZ) < 0.003D && vec3d.length() < 0.0045000000000000005D) {
vec3d = vec3d.normalize().scale(0.0045000000000000005D);
}
- this.setDeltaMovement(this.getDeltaMovement().add(vec3d));
+ this.addDeltaMovement(vec3d.x, vec3d.y, vec3d.z);
+ // Sakura end
}
this.fluidHeight.put(tag, d1);
@@ -4626,11 +4634,53 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
return this.chunkPosition;
}
+ // Sakura start - reduce movement allocations
+ private double movementX;
+ private double movementY;
+ private double movementZ;
+ private boolean movementDirty;
+
+ public void addDeltaMovement(double x, double y, double z) {
+ syncDeltaMovement();
+ movementX += x;
+ movementY += y;
+ movementZ += z;
+ }
+
+ public void scaleDeltaMovement(double n) {
+ syncDeltaMovement();
+ movementX *= n;
+ movementY *= n;
+ movementZ *= n;
+ }
+
+ public void multiplyDeltaMovement(double x, double y, double z) {
+ syncDeltaMovement();
+ movementX *= x;
+ movementY *= y;
+ movementZ *= z;
+ }
+
+ private void updateDeltaMovement() {
+ if (movementDirty) {
+ deltaMovement = new Vec3(movementX, movementY, movementZ);
+ movementDirty = false;
+ }
+ }
+
+ private void syncDeltaMovement() {
+ if (!movementDirty) {
+ setDeltaMovement(deltaMovement.x, deltaMovement.y, deltaMovement.z);
+ }
+ }
+
public Vec3 getDeltaMovement() {
+ updateDeltaMovement();
return this.deltaMovement;
}
public void setDeltaMovement(Vec3 velocity) {
+ movementDirty = false;
synchronized (this.posLock) { // Paper
this.deltaMovement = velocity;
} // Paper
@@ -4641,7 +4691,11 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
}
public void setDeltaMovement(double x, double y, double z) {
- this.setDeltaMovement(new Vec3(x, y, z));
+ movementX = x;
+ movementY = y;
+ movementZ = z;
+ movementDirty = true;
+ // Sakura end
}
public final int getBlockX() {
diff --git a/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java b/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java
index 28b8efdd224e4dbb32f3eac1c9e2c512e2695dc8..7da6420aed597ee1bf544059c79a063512adcd40 100644
--- a/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java
+++ b/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java
@@ -183,7 +183,7 @@ public class FallingBlockEntity extends Entity {
} else {
BlockState iblockdata = this.level().getBlockState(blockposition);
- this.setDeltaMovement(this.getDeltaMovement().multiply(0.7D, -0.5D, 0.7D));
+ this.multiplyDeltaMovement(0.7D, -0.5D, 0.7D); // Sakura - reduce movement allocations
if (!iblockdata.is(Blocks.MOVING_PISTON)) {
if (!this.cancelDrop) {
boolean flag2 = iblockdata.canBeReplaced((BlockPlaceContext) (new DirectionalPlaceContext(this.level(), blockposition, Direction.DOWN, ItemStack.EMPTY, Direction.UP)));
@@ -250,7 +250,7 @@ public class FallingBlockEntity extends Entity {
}
}
- this.setDeltaMovement(this.getDeltaMovement().scale(0.98D));
+ this.scaleDeltaMovement(0.98D); // Sakura - reduce movement allocations
}
}
diff --git a/src/main/java/net/minecraft/world/entity/item/PrimedTnt.java b/src/main/java/net/minecraft/world/entity/item/PrimedTnt.java
index dace8dc0c051ce9355d878154466ee3a548a3832..fda88328472130df8317a84fc726a73c35850c3a 100644
--- a/src/main/java/net/minecraft/world/entity/item/PrimedTnt.java
+++ b/src/main/java/net/minecraft/world/entity/item/PrimedTnt.java
@@ -85,9 +85,9 @@ public class PrimedTnt extends Entity implements TraceableEntity {
return;
}
// Paper end - Configurable TNT height nerf
- this.setDeltaMovement(this.getDeltaMovement().scale(0.98D));
+ this.scaleDeltaMovement(0.98D); // Sakura - reduce movement allocations
if (this.onGround()) {
- this.setDeltaMovement(this.getDeltaMovement().multiply(0.7D, -0.5D, 0.7D));
+ this.multiplyDeltaMovement(0.7D, -0.5D, 0.7D); // Sakura - reduce movement allocations
}
int i = this.getFuse() - 1;
diff --git a/src/main/java/net/minecraft/world/level/Explosion.java b/src/main/java/net/minecraft/world/level/Explosion.java
index 37896ccb5eea0ec4e301ca97092c8ccef3aa1da5..85c0855eaf20013b60ed643052b783f7f6e30584 100644
--- a/src/main/java/net/minecraft/world/level/Explosion.java
+++ b/src/main/java/net/minecraft/world/level/Explosion.java
@@ -618,17 +618,23 @@ public class Explosion {
d8 *= d13;
d9 *= d13;
d10 *= d13;
- Vec3 vec3d1 = new Vec3(d8, d9, d10);
+ Vec3 vec3d1 = null; // Sakura - move allocation into living entity condition
// CraftBukkit start - Call EntityKnockbackEvent
if (entity instanceof LivingEntity) {
+ vec3d1 = new Vec3(d8, d9, d10); // Sakura - reduce deltaMovement allocations
// Paper start - knockback events
io.papermc.paper.event.entity.EntityKnockbackEvent event = CraftEventFactory.callEntityKnockbackEvent((org.bukkit.craftbukkit.entity.CraftLivingEntity) entity.getBukkitEntity(), this.damageSource.getEntity() != null ? this.damageSource.getEntity() : this.source, io.papermc.paper.event.entity.EntityKnockbackEvent.Cause.EXPLOSION, d13, vec3d1);
vec3d1 = event.isCancelled() ? Vec3.ZERO : org.bukkit.craftbukkit.util.CraftVector.toNMS(event.getKnockback());
// Paper end - knockback events
+ // Sakura start - reduce deltaMovement allocations
+ entity.addDeltaMovement(vec3d1.x(), vec3d1.y(), vec3d1.z());
+ } else {
+ entity.addDeltaMovement(d8, d9, d10);
+ // Sakura end - reduce deltaMovement allocations
}
// CraftBukkit end
- entity.setDeltaMovement(entity.getDeltaMovement().add(vec3d1));
+ // Sakura - moved up
if (entity instanceof Player) {
Player entityhuman = (Player) entity;
diff --git a/src/main/java/net/minecraft/world/level/block/Block.java b/src/main/java/net/minecraft/world/level/block/Block.java
index cf8b8c8efd1c9c81eb5f02d75bd75875eb66771f..30e23f67a1a816dfb4f32cfe45bc8dd40938317a 100644
--- a/src/main/java/net/minecraft/world/level/block/Block.java
+++ b/src/main/java/net/minecraft/world/level/block/Block.java
@@ -461,7 +461,7 @@ public class Block extends BlockBehaviour implements ItemLike {
}
public void updateEntityAfterFallOn(BlockGetter world, Entity entity) {
- entity.setDeltaMovement(entity.getDeltaMovement().multiply(1.0D, 0.0D, 1.0D));
+ entity.multiplyDeltaMovement(1.0D, 0.0D, 1.0D); // Sakura
}
public ItemStack getCloneItemStack(LevelReader world, BlockPos pos, BlockState state) {
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