From 635486be4cfe832a3e32ddaa27e88f3f3604a330 Mon Sep 17 00:00:00 2001
From: Encode42 <me@encode42.dev>
Date: Sun, 8 Aug 2021 22:50:58 -0400
Subject: [PATCH] Config to allow mobs to pathfind over rails

---
 ...to-allow-mobs-to-pathfind-over-rails.patch | 39 +++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 patches/server/0248-Config-to-allow-mobs-to-pathfind-over-rails.patch

diff --git a/patches/server/0248-Config-to-allow-mobs-to-pathfind-over-rails.patch b/patches/server/0248-Config-to-allow-mobs-to-pathfind-over-rails.patch
new file mode 100644
index 000000000..bd028e817
--- /dev/null
+++ b/patches/server/0248-Config-to-allow-mobs-to-pathfind-over-rails.patch
@@ -0,0 +1,39 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Encode42 <me@encode42.dev>
+Date: Sun, 8 Aug 2021 22:50:23 -0400
+Subject: [PATCH] Config to allow mobs to pathfind over rails
+
+
+diff --git a/src/main/java/net/minecraft/world/level/pathfinder/WalkNodeEvaluator.java b/src/main/java/net/minecraft/world/level/pathfinder/WalkNodeEvaluator.java
+index 60605a8a021cc56f9c3ba22bc43c43c302fb1a70..e7dc64c3ef715e3e58d79bb55546a1222c101edf 100644
+--- a/src/main/java/net/minecraft/world/level/pathfinder/WalkNodeEvaluator.java
++++ b/src/main/java/net/minecraft/world/level/pathfinder/WalkNodeEvaluator.java
+@@ -240,7 +240,7 @@ public class WalkNodeEvaluator extends NodeEvaluator {
+             }
+ 
+             if (blockPathTypes != BlockPathTypes.WALKABLE && (!this.isAmphibious() || blockPathTypes != BlockPathTypes.WATER)) {
+-                if ((node == null || node.costMalus < 0.0F) && maxYStep > 0 && blockPathTypes != BlockPathTypes.FENCE && blockPathTypes != BlockPathTypes.UNPASSABLE_RAIL && blockPathTypes != BlockPathTypes.TRAPDOOR && blockPathTypes != BlockPathTypes.POWDER_SNOW) {
++                if ((node == null || node.costMalus < 0.0F) && maxYStep > 0 && blockPathTypes != BlockPathTypes.FENCE && !(!this.mob.level.purpurConfig.mobsIgnoreRails && blockPathTypes == BlockPathTypes.UNPASSABLE_RAIL) && blockPathTypes != BlockPathTypes.TRAPDOOR && blockPathTypes != BlockPathTypes.POWDER_SNOW) { // Purpur
+                     node = this.findAcceptedNode(x, y + 1, z, maxYStep - 1, prevFeetY, direction, nodeType);
+                     if (node != null && (node.type == BlockPathTypes.OPEN || node.type == BlockPathTypes.WALKABLE) && this.mob.getBbWidth() < 1.0F) {
+                         double g = (double)(x - direction.getStepX()) + 0.5D;
+diff --git a/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java b/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
+index fe13c25efe4c3696f20771f1bbdf256c56934a24..57c5e7c77079a214ce7fde850fe198005b2297cd 100644
+--- a/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
++++ b/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
+@@ -642,6 +642,7 @@ public class PurpurWorldConfig {
+     public double voidDamageDealt = 4.0D;
+     public int raidCooldownSeconds = 0;
+     public int animalBreedingCooldownSeconds = 0;
++    public boolean mobsIgnoreRails = false;
+     private void miscGameplayMechanicsSettings() {
+         useBetterMending = getBoolean("gameplay-mechanics.use-better-mending", useBetterMending);
+         alwaysTameInCreative = getBoolean("gameplay-mechanics.always-tame-in-creative", alwaysTameInCreative);
+@@ -664,6 +665,7 @@ public class PurpurWorldConfig {
+         voidDamageDealt = getDouble("gameplay-mechanics.void-damage-dealt", voidDamageDealt);
+         raidCooldownSeconds = getInt("gameplay-mechanics.raid-cooldown-seconds", raidCooldownSeconds);
+         animalBreedingCooldownSeconds = getInt("gameplay-mechanics.animal-breeding-cooldown-seconds", animalBreedingCooldownSeconds);
++        mobsIgnoreRails = getBoolean("gameplay-mechanics.mobs-ignore-rails", mobsIgnoreRails);
+     }
+ 
+     public Set<Block> noRandomTickBlocks = new HashSet<>();