Purpur/patches/server/0012-LivingEntity-safeFallDistance.patch

From 9cd51989f8d31b988b3cbdb9ad7f60fd1c1b33da Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <blake.galbreath@gmail.com>
Date: Sun, 5 May 2019 12:58:45 -0500
Subject: [PATCH] LivingEntity safeFallDistance


diff --git a/src/main/java/net/minecraft/server/EntityGiantZombie.java b/src/main/java/net/minecraft/server/EntityGiantZombie.java
index 702242653a47051c9ed32304c427c27652af6157..9f4f56c47ecd4b35ebf33ca0bf9a040074ababf2 100644
--- a/src/main/java/net/minecraft/server/EntityGiantZombie.java
+++ b/src/main/java/net/minecraft/server/EntityGiantZombie.java
@@ -4,6 +4,7 @@ public class EntityGiantZombie extends EntityMonster {
 
     public EntityGiantZombie(EntityTypes<? extends EntityGiantZombie> entitytypes, World world) {
         super(entitytypes, world);
+        this.safeFallDistance = 10.0F; // Purpur
     }
 
     @Override
diff --git a/src/main/java/net/minecraft/server/EntityHorseAbstract.java b/src/main/java/net/minecraft/server/EntityHorseAbstract.java
index fcb31147622b4b81934be05ffc8de5e821ce69b7..ce26e65aaf25a41663ecd8c935967c33ff3de1dc 100644
--- a/src/main/java/net/minecraft/server/EntityHorseAbstract.java
+++ b/src/main/java/net/minecraft/server/EntityHorseAbstract.java
@@ -210,7 +210,7 @@ public abstract class EntityHorseAbstract extends EntityAnimal implements IInven
 
     @Override
     protected int e(float f, float f1) {
-        return MathHelper.f((f * 0.5F - 3.0F) * f1);
+        return MathHelper.f((f * 0.5F - this.safeFallDistance) * f1); // Purpur
     }
 
     protected int getChestSlots() {
diff --git a/src/main/java/net/minecraft/server/EntityLiving.java b/src/main/java/net/minecraft/server/EntityLiving.java
index c57e7e1bccfc3a0cccfbaca44d9f369ec1f5683c..309a20e06461aeb362080b9aeb256f2c73d548a5 100644
--- a/src/main/java/net/minecraft/server/EntityLiving.java
+++ b/src/main/java/net/minecraft/server/EntityLiving.java
@@ -132,6 +132,7 @@ public abstract class EntityLiving extends Entity {
     // CraftBukkit start
     public int expToDrop;
     public int maxAirTicks = 300;
+    public float safeFallDistance = 3.0F; // Purpur
     boolean forceDrops;
     ArrayList<org.bukkit.inventory.ItemStack> drops = new ArrayList<org.bukkit.inventory.ItemStack>();
     public final org.bukkit.craftbukkit.attribute.CraftAttributeMap craftAttributes;
@@ -226,8 +227,8 @@ public abstract class EntityLiving extends Entity {
             this.cR();
         }
 
-        if (!this.world.isClientSide && this.fallDistance > 3.0F && flag) {
-            float f = (float) MathHelper.f(this.fallDistance - 3.0F);
+        if (!this.world.isClientSide && this.fallDistance > this.safeFallDistance && flag) { // Purpur
+            float f = (float) MathHelper.f(this.fallDistance - this.safeFallDistance); // Purpur
 
             if (!iblockdata.isAir()) {
                 double d1 = Math.min((double) (0.2F + f / 15.0F), 2.5D);
@@ -1679,7 +1680,7 @@ public abstract class EntityLiving extends Entity {
         MobEffect mobeffect = this.getEffect(MobEffects.JUMP);
         float f2 = mobeffect == null ? 0.0F : (float) (mobeffect.getAmplifier() + 1);
 
-        return MathHelper.f((f - 3.0F - f2) * f1);
+        return MathHelper.f((f - this.safeFallDistance - f2) * f1); // Purpur
     }
 
     protected void playBlockStepSound() {
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
index 1fc356d0b74c1cbb19bf7527088f1f61b6da5422..66447231244dbe3d6fadaa0d00710f9ec7f72445 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
@@ -816,4 +816,16 @@ public class CraftLivingEntity extends CraftEntity implements LivingEntity {
         getHandle().receive(((CraftItem) item).getHandle(), quantity);
     }
     // Paper end
+
+    // Purpur start
+    @Override
+    public float getSafeFallDistance() {
+        return getHandle().safeFallDistance;
+    }
+
+    @Override
+    public void setSafeFallDistance(float safeFallDistance) {
+        getHandle().safeFallDistance = safeFallDistance;
+    }
+    // Purpur end
 }