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9ec82c34eaea892325c6ec9fceeb89797bdebff7
SakuraMC/patches/server/0006-Reduce-deltaMovement-Allocations.patch
Samsuik 9ec82c34ea Begin backporting to 1.18.2
2025-03-14 18:45:24 +00:00

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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 65e53582f3d2b49e795f0f98325ddf8063f5f752..078ec45f7e0b51f6b78f71d909d43b8966fc1b0a 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -1100,7 +1100,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
this.tryCheckInsideBlocks();
float f2 = this.getBlockSpeedFactor();
- this.setDeltaMovement(this.getDeltaMovement().multiply((double) f2, 1.0D, (double) f2));
+ this.multiplyDeltaMovement((double) f2, 1.0D, (double) f2); // Sakura - reduce movement allocations
// Paper start - remove expensive streams from here
boolean noneMatch = true;
AABB fireSearchBox = this.getBoundingBox().deflate(1.0E-6D);
@@ -1781,6 +1781,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
public void moveTo(double x, double y, double z, float yaw, float pitch) {
// Paper - cancel entity velocity if teleported
if (!preserveMotion) {
+ this.movementDirty = false; // Sakura
this.deltaMovement = Vec3.ZERO;
} else {
this.preserveMotion = false;
@@ -3053,29 +3054,33 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
}
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 - reduce movement allocations
this.resetFallDistance();
}
@@ -3950,16 +3955,19 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
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);
@@ -4024,18 +4032,64 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
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
}
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 - reduce movement allocations
}
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 cd587ad749699e14351e75be82363759b7ce4235..597efc61bdd46b951b62c2584a846942508983cf 100644
--- a/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java
+++ b/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java
@@ -140,7 +140,7 @@ public class FallingBlockEntity extends Entity {
++this.time;
if (!this.isNoGravity()) {
- this.setDeltaMovement(this.getDeltaMovement().add(0.0D, -0.04D, 0.0D));
+ this.addDeltaMovement(0.0D, -0.04D, 0.0D); // Sakura - reduce movement allocations
}
this.move(MoverType.SELF, this.getDeltaMovement());
@@ -187,7 +187,7 @@ 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)));
@@ -254,7 +254,7 @@ 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 29830c07e61aaf74bfd876f2624c0fea859ddf4f..f997647a7ff29100acd5bab1d77ac3a6305e4717 100644
--- a/src/main/java/net/minecraft/world/entity/item/PrimedTnt.java
+++ b/src/main/java/net/minecraft/world/entity/item/PrimedTnt.java
@@ -65,7 +65,7 @@ public class PrimedTnt extends Entity {
public void tick() {
if (level.spigotConfig.maxTntTicksPerTick > 0 && ++level.spigotConfig.currentPrimedTnt > level.spigotConfig.maxTntTicksPerTick) { return; } // Spigot
if (!this.isNoGravity()) {
- this.setDeltaMovement(this.getDeltaMovement().add(0.0D, -0.04D, 0.0D));
+ this.addDeltaMovement(0.0D, -0.04D, 0.0D); // Sakura - reduce movement allocations
}
this.move(MoverType.SELF, this.getDeltaMovement());
@@ -75,9 +75,9 @@ public class PrimedTnt extends Entity {
return;
}
// Paper end
- 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 29f6c10e2c2626a9726d295acf12efea2b463cd3..22ceea2deb22bc8bd082a5ad94de9a9ca02a4ec7 100644
--- a/src/main/java/net/minecraft/world/level/Explosion.java
+++ b/src/main/java/net/minecraft/world/level/Explosion.java
@@ -277,7 +277,7 @@ public class Explosion {
d14 = entity instanceof Player && level.paperConfig.disableExplosionKnockback ? 0 : ProtectionEnchantment.getExplosionKnockbackAfterDampener((LivingEntity) entity, d13); // Paper - Disable explosion knockback
}
- entity.setDeltaMovement(entity.getDeltaMovement().add(d8 * d14, d9 * d14, d10 * d14));
+ entity.addDeltaMovement(d8 * d14, d9 * d14, d10 * d14); // Sakura - reduce movement allocations
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 a80f4dc0a642c744223a155232291ace6e007636..db023572478d44398ea0454f3c01eca382752b43 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(BlockGetter world, BlockPos pos, BlockState state) {
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