Paper/patches/server/0066-handle-NaN-health-absorb-values-and-repair-bad-data.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sun, 27 Sep 2015 01:18:02 -0400
Subject: [PATCH] handle NaN health/absorb values and repair bad data
diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
index a492f0b8393c185f0464f0fb0e5d5dce4d0e3824..bcf7fc1bdee10baaff7ec15ad2572061c2c800ec 100644
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--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
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@@ -764,7 +764,13 @@ public abstract class LivingEntity extends Entity {
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@Override
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public void readAdditionalSaveData(CompoundTag nbt) {
- this.setAbsorptionAmount(nbt.getFloat("AbsorptionAmount"));
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+ // Paper start - jvm keeps optimizing the setter
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+ float absorptionAmount = nbt.getFloat("AbsorptionAmount");
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+ if (Float.isNaN(absorptionAmount)) {
+ absorptionAmount = 0;
+ }
+ this.setAbsorptionAmount(absorptionAmount);
+ // Paper end
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if (nbt.contains("Attributes", 9) && this.level != null && !this.level.isClientSide) {
this.getAttributes().load(nbt.getList("Attributes", 10));
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}
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@@ -1251,6 +1257,10 @@ public abstract class LivingEntity extends Entity {
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}
public void setHealth(float health) {
+ // Paper start
+ if (Float.isNaN(health)) { health = getMaxHealth(); if (this.valid) {
+ System.err.println("[NAN-HEALTH] " + getScoreboardName() + " had NaN health set");
+ } } // Paper end
// CraftBukkit start - Handle scaled health
if (this instanceof ServerPlayer) {
org.bukkit.craftbukkit.entity.CraftPlayer player = ((ServerPlayer) this).getBukkitEntity();
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@@ -3398,7 +3408,7 @@ public abstract class LivingEntity extends Entity {
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}
public void setAbsorptionAmount(float amount) {
- if (amount < 0.0F) {
+ if (amount < 0.0F || Float.isNaN(amount)) { // Paper
amount = 0.0F;
}
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index ada3e4af93c96221355b5ad777527ae16cfa866d..b3d49b652790a98f1426498a555c6826f8657c63 100644
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--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -1708,6 +1708,7 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
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}
public void setRealHealth(double health) {
+ if (Double.isNaN(health)) {return;} // Paper
this.health = health;
}