From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Mariell Hoversholm <proximyst@proximyst.com>
Date: Sat, 9 Jan 2021 22:22:59 +0100
Subject: [PATCH] Movement options for armor stands

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <https://www.gnu.org/licenses/>.

diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index cc7cdb842df3a9d9cb9dc86b589c9893e06577ce..7e92c7a9c5792cb0d4c6c4370449aa0cf36d7dc5 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -1875,7 +1875,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, S
         return this.isInWater() || flag;
     }
 
-    void updateInWaterStateAndDoWaterCurrentPushing() {
+    public void updateInWaterStateAndDoWaterCurrentPushing() { // Purpur - package-private -> public
         Entity entity = this.getVehicle();
 
         if (entity instanceof Boat) {
diff --git a/src/main/java/net/minecraft/world/entity/decoration/ArmorStand.java b/src/main/java/net/minecraft/world/entity/decoration/ArmorStand.java
index 728814649f8d6837586cd5400b271d25b8306e35..53f36e281e42a2bfc174f06f448f1eb85eb02aff 100644
--- a/src/main/java/net/minecraft/world/entity/decoration/ArmorStand.java
+++ b/src/main/java/net/minecraft/world/entity/decoration/ArmorStand.java
@@ -99,10 +99,12 @@ public class ArmorStand extends LivingEntity {
     private boolean noTickPoseDirty = false;
     private boolean noTickEquipmentDirty = false;
     // Paper end - Allow ArmorStands not to tick
+    public boolean canMovementTick = true; // Purpur
 
     public ArmorStand(EntityType<? extends ArmorStand> type, Level world) {
         super(type, world);
         if (world != null) this.canTick = world.paperConfig().entities.armorStands.tick; // Paper - Allow ArmorStands not to tick
+        if (world != null) this.canMovementTick = world.purpurConfig.armorstandMovement; // Purpur
         this.handItems = NonNullList.withSize(2, ItemStack.EMPTY);
         this.armorItems = NonNullList.withSize(4, ItemStack.EMPTY);
         this.headPose = ArmorStand.DEFAULT_HEAD_POSE;
@@ -1005,4 +1007,18 @@ public class ArmorStand extends LivingEntity {
         }
     }
     // Paper end
+
+    // Purpur start
+    @Override
+    public void updateInWaterStateAndDoWaterCurrentPushing() {
+        if (this.level().purpurConfig.armorstandWaterMovement &&
+            (this.level().purpurConfig.armorstandWaterFence || !(level().getBlockState(blockPosition().below()).getBlock() instanceof net.minecraft.world.level.block.FenceBlock)))
+            super.updateInWaterStateAndDoWaterCurrentPushing();
+    }
+
+    @Override
+    public void aiStep() {
+        if (this.canMovementTick && this.canMove) super.aiStep();
+    }
+    // Purpur end
 }
diff --git a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
index f4106a69deb3ebc9562633642617da44f4055f73..54775a4c13dd8b03373bb1e47bb591ac0a2f82c7 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
@@ -99,10 +99,16 @@ public class PurpurWorldConfig {
     public float armorstandStepHeight = 0.0F;
     public boolean armorstandSetNameVisible = true;
     public boolean armorstandFixNametags = false;
+    public boolean armorstandMovement = true;
+    public boolean armorstandWaterMovement = true;
+    public boolean armorstandWaterFence = true;
     private void armorstandSettings() {
         armorstandStepHeight = (float) getDouble("gameplay-mechanics.armorstand.step-height", armorstandStepHeight);
         armorstandSetNameVisible = getBoolean("gameplay-mechanics.armorstand.set-name-visible-when-placing-with-custom-name", armorstandSetNameVisible);
         armorstandFixNametags = getBoolean("gameplay-mechanics.armorstand.fix-nametags", armorstandFixNametags);
+        armorstandMovement = getBoolean("gameplay-mechanics.armorstand.can-movement-tick", armorstandMovement);
+        armorstandWaterMovement = getBoolean("gameplay-mechanics.armorstand.can-move-in-water", armorstandWaterMovement);
+        armorstandWaterFence = getBoolean("gameplay-mechanics.armorstand.can-move-in-water-over-fence", armorstandWaterFence);
     }
 
     public boolean arrowMovementResetsDespawnCounter = true;