From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <Blake.Galbreath@GMail.com>
Date: Wed, 4 Nov 2020 13:12:50 -0600
Subject: [PATCH] Arrows should not reset despawn counter

This prevents keeping arrows alive indefinitely (such as when the block
the arrow is stuck in gets removed, like a piston head going up/down)

diff --git a/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java b/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java
index e7ef36dac559d03d127cf45373a7e0dc935b80a8..39fa3fa6d49eb9451f876f7b46bd16555e71da05 100644
--- a/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java
+++ b/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java
@@ -323,7 +323,7 @@ public abstract class AbstractArrow extends Projectile {
         Vec3 vec3d = this.getDeltaMovement();
 
         this.setDeltaMovement(vec3d.multiply((double) (this.random.nextFloat() * 0.2F), (double) (this.random.nextFloat() * 0.2F), (double) (this.random.nextFloat() * 0.2F)));
-        this.life = 0;
+        if (this.level.purpurConfig.arrowMovementResetsDespawnCounter) this.life = 0; // Purpur - do not reset despawn counter
     }
 
     @Override
diff --git a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
index 0acc57bf9ca2a2cfef8a662c8893ca1bc34b9e9a..72a409ca200864040eb317fef3090e5719c076f6 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
@@ -104,6 +104,11 @@ public class PurpurWorldConfig {
         armorstandStepHeight = (float) getDouble("gameplay-mechanics.armorstand.step-height", armorstandStepHeight);
     }
 
+    public boolean arrowMovementResetsDespawnCounter = true;
+    private void arrowSettings() {
+        arrowMovementResetsDespawnCounter = getBoolean("gameplay-mechanics.arrow.movement-resets-despawn-counter", arrowMovementResetsDespawnCounter);
+    }
+
     public boolean useBetterMending = false;
     public boolean boatEjectPlayersOnLand = false;
     public boolean disableDropsOnCrammingDeath = false;