Add configurable entity left handedness chance

patches/server/0149-Changeable-Mob-Left-Handed-Chance.patch

@@ -0,0 +1,34 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Ben Kerllenevich <me@notom3ga.me>
+Date: Mon, 30 Nov 2020 11:40:11 -0500
+Subject: [PATCH] Changeable Mob Left Handed Chance
+
+
+diff --git a/src/main/java/net/minecraft/server/EntityInsentient.java b/src/main/java/net/minecraft/server/EntityInsentient.java
+index 9214b2a3c..3a79771d5 100644
+--- a/src/main/java/net/minecraft/server/EntityInsentient.java
++++ b/src/main/java/net/minecraft/server/EntityInsentient.java
+@@ -1133,7 +1133,7 @@ public abstract class EntityInsentient extends EntityLiving {
+     @Nullable
+     public GroupDataEntity prepare(WorldAccess worldaccess, DifficultyDamageScaler difficultydamagescaler, EnumMobSpawn enummobspawn, @Nullable GroupDataEntity groupdataentity, @Nullable NBTTagCompound nbttagcompound) {
+         this.getAttributeInstance(GenericAttributes.FOLLOW_RANGE).addModifier(new AttributeModifier("Random spawn bonus", this.random.nextGaussian() * 0.05D, AttributeModifier.Operation.MULTIPLY_BASE));
+-        if (this.random.nextFloat() < 0.05F) {
++        if (this.random.nextFloat() < this.world.purpurConfig.entityLeftHandedChance) { // Purpur
+             this.setLeftHanded(true);
+         } else {
+             this.setLeftHanded(false);
+diff --git a/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java b/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
+index 79b345df7..8bdb6399e 100644
+--- a/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
++++ b/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
+@@ -129,8 +129,10 @@ public class PurpurWorldConfig {
+     }
+
+     public int entityLifeSpan = 0;
++    public float entityLeftHandedChance = 0.05f;
+     private void entitySettings() {
+         entityLifeSpan = getInt("gameplay-mechanics.entity-lifespan", entityLifeSpan);
++        entityLeftHandedChance = (float) getDouble("gameplay-mechanics.entity-left-handed-chance", entityLeftHandedChance);
+     }
+
+     public List<Item> itemImmuneToExplosion = new ArrayList<>();