Paper/patches/server/0778-Stop-large-look-changes-from-crashing-the-server.patch
Owen 89d51d5f29
Allow enabling sand duping (#10191)
Because this exploit has been widely known for years and has not been fixed by Mojang, we decided that it was worth allowing people to toggle it on/off due to how easy it is to make it configurable.

It should be noted that this decision does not promise all future exploits will be configurable.
2024-03-03 17:05:34 -05:00

75 lines
3.1 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: MWHunter <s0521458@student.rockvalleycollege.edu>
Date: Wed, 24 Aug 2022 09:54:11 -0400
Subject: [PATCH] Stop large look changes from crashing the server
Co-authored-by: Jaren Knodel <Jaren@Knodel.com>
diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
index 79fd521d5c4a8d6acd2b4f946dfdcc7b4e641b75..5fd17014c95e04d50d30e79d6e331a06b238b613 100644
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
@@ -3076,37 +3076,15 @@ public abstract class LivingEntity extends Entity implements Attackable {
this.level().getProfiler().pop();
this.level().getProfiler().push("rangeChecks");
- while (this.getYRot() - this.yRotO < -180.0F) {
- this.yRotO -= 360.0F;
- }
-
- while (this.getYRot() - this.yRotO >= 180.0F) {
- this.yRotO += 360.0F;
- }
+ // Paper start - stop large pitch and yaw changes from crashing the server
+ this.yRotO += Math.round((this.getYRot() - this.yRotO) / 360.0F) * 360.0F;
- while (this.yBodyRot - this.yBodyRotO < -180.0F) {
- this.yBodyRotO -= 360.0F;
- }
+ this.yBodyRotO += Math.round((this.yBodyRot - this.yBodyRotO) / 360.0F) * 360.0F;
- while (this.yBodyRot - this.yBodyRotO >= 180.0F) {
- this.yBodyRotO += 360.0F;
- }
-
- while (this.getXRot() - this.xRotO < -180.0F) {
- this.xRotO -= 360.0F;
- }
+ this.xRotO += Math.round((this.getXRot() - this.xRotO) / 360.0F) * 360.0F;
- while (this.getXRot() - this.xRotO >= 180.0F) {
- this.xRotO += 360.0F;
- }
-
- while (this.yHeadRot - this.yHeadRotO < -180.0F) {
- this.yHeadRotO -= 360.0F;
- }
-
- while (this.yHeadRot - this.yHeadRotO >= 180.0F) {
- this.yHeadRotO += 360.0F;
- }
+ this.yHeadRotO += Math.round((this.yHeadRot - this.yHeadRotO) / 360.0F) * 360.0F;
+ // Paper end
this.level().getProfiler().pop();
this.animStep += f2;
diff --git a/src/main/java/net/minecraft/world/entity/projectile/Projectile.java b/src/main/java/net/minecraft/world/entity/projectile/Projectile.java
index 20842ed5b730dda88efd0cda9292a37f879a4017..0a207f3f2e4c0790e784fb4b0c3c2dfa49c39724 100644
--- a/src/main/java/net/minecraft/world/entity/projectile/Projectile.java
+++ b/src/main/java/net/minecraft/world/entity/projectile/Projectile.java
@@ -259,13 +259,7 @@ public abstract class Projectile extends Entity implements TraceableEntity {
}
protected static float lerpRotation(float prevRot, float newRot) {
- while (newRot - prevRot < -180.0F) {
- prevRot -= 360.0F;
- }
-
- while (newRot - prevRot >= 180.0F) {
- prevRot += 360.0F;
- }
+ prevRot += Math.round((newRot - prevRot) / 360.0F) * 360.0F; // Paper - stop large look changes from crashing the server
return Mth.lerp(0.2F, prevRot, newRot);
}