From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: kashike <kashike@vq.lc>
Date: Wed, 15 Aug 2018 01:26:09 -0700
Subject: [PATCH] Allow disabling armour stand ticking


diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
index 3562950df4868b1393790b1a1ff1fe0dc589c155..5ab0e7183e48134b7a0f736462516b1a8a333b04 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -384,4 +384,10 @@ public class PaperWorldConfig {
     private void armorStandEntityLookups() {
         armorStandEntityLookups = getBoolean("armor-stands-do-collision-entity-lookups", true);
     }
+
+    public boolean armorStandTick = true;
+    private void armorStandTick() {
+        this.armorStandTick = this.getBoolean("armor-stands-tick", this.armorStandTick);
+        log("ArmorStand ticking is " + (this.armorStandTick ? "enabled" : "disabled") + " by default");
+    }
 }
diff --git a/src/main/java/net/minecraft/world/entity/decoration/EntityArmorStand.java b/src/main/java/net/minecraft/world/entity/decoration/EntityArmorStand.java
index e97d25339b37a70f91022dcb021bbe82fb8f5eda..8d35240405d7f7245f3c7b0b611973d58fa4384f 100644
--- a/src/main/java/net/minecraft/world/entity/decoration/EntityArmorStand.java
+++ b/src/main/java/net/minecraft/world/entity/decoration/EntityArmorStand.java
@@ -81,9 +81,16 @@ public class EntityArmorStand extends EntityLiving {
     public Vector3f leftLegPose;
     public Vector3f rightLegPose;
     public boolean canMove = true; // Paper
+    // Paper start - Allow ArmorStands not to tick
+    public boolean canTick = true;
+    public boolean canTickSetByAPI = false;
+    private boolean noTickPoseDirty = false;
+    private boolean noTickEquipmentDirty = false;
+    // Paper end
 
     public EntityArmorStand(EntityTypes<? extends EntityArmorStand> entitytypes, World world) {
         super(entitytypes, world);
+        if (world != null) this.canTick = world.paperConfig.armorStandTick; // Paper - armour stand ticking
         this.handItems = NonNullList.a(2, ItemStack.b);
         this.armorItems = NonNullList.a(4, ItemStack.b);
         this.headPose = EntityArmorStand.bj;
@@ -179,6 +186,7 @@ public class EntityArmorStand extends EntityLiving {
                 this.armorItems.set(enumitemslot.b(), itemstack);
         }
 
+        this.noTickEquipmentDirty = true; // Paper - Allow equipment to be updated even when tick disabled
     }
 
     @Override
@@ -259,6 +267,7 @@ public class EntityArmorStand extends EntityLiving {
         }
 
         nbttagcompound.set("Pose", this.B());
+        if (this.canTickSetByAPI) nbttagcompound.setBoolean("Paper.CanTickOverride", this.canTick); // Paper - persist no tick setting
     }
 
     @Override
@@ -290,6 +299,12 @@ public class EntityArmorStand extends EntityLiving {
         this.setBasePlate(nbttagcompound.getBoolean("NoBasePlate"));
         this.setMarker(nbttagcompound.getBoolean("Marker"));
         this.noclip = !this.A();
+        // Paper start - persist no tick
+        if (nbttagcompound.hasKey("Paper.CanTickOverride")) {
+            this.canTick = nbttagcompound.getBoolean("Paper.CanTickOverride");
+            this.canTickSetByAPI = true;
+        }
+        // Paper end
         NBTTagCompound nbttagcompound1 = nbttagcompound.getCompound("Pose");
 
         this.g(nbttagcompound1);
@@ -645,7 +660,29 @@ public class EntityArmorStand extends EntityLiving {
 
     @Override
     public void tick() {
+        // Paper start
+        if (!this.canTick) {
+            if (this.noTickPoseDirty) {
+                this.noTickPoseDirty = false;
+                this.updatePose();
+            }
+
+            if (this.noTickEquipmentDirty) {
+                this.noTickEquipmentDirty = false;
+                this.updateEquipment();
+            }
+
+            return;
+        }
+        // Paper end
+
         super.tick();
+        // Paper start - Split into separate method
+        updatePose();
+    }
+
+    public void updatePose() {
+        // Paper end
         Vector3f vector3f = (Vector3f) this.datawatcher.get(EntityArmorStand.c);
 
         if (!this.headPose.equals(vector3f)) {
@@ -768,29 +805,36 @@ public class EntityArmorStand extends EntityLiving {
     public void setHeadPose(Vector3f vector3f) {
         this.headPose = vector3f;
         this.datawatcher.set(EntityArmorStand.c, vector3f);
+        this.noTickPoseDirty = true; // Paper - Allow updates when not ticking
     }
 
     public void setBodyPose(Vector3f vector3f) {
         this.bodyPose = vector3f;
         this.datawatcher.set(EntityArmorStand.d, vector3f);
+        this.noTickPoseDirty = true; // Paper - Allow updates when not ticking
     }
 
     public void setLeftArmPose(Vector3f vector3f) {
         this.leftArmPose = vector3f;
         this.datawatcher.set(EntityArmorStand.e, vector3f);
+        this.noTickPoseDirty = true; // Paper - Allow updates when not ticking
     }
 
     public void setRightArmPose(Vector3f vector3f) {
         this.rightArmPose = vector3f;
         this.datawatcher.set(EntityArmorStand.f, vector3f);
+        this.noTickPoseDirty = true; // Paper - Allow updates when not ticking
     }
 
     public void setLeftLegPose(Vector3f vector3f) {
+        this.noTickPoseDirty = true; // Paper - Allow updates when not ticking
         this.leftLegPose = vector3f;
         this.datawatcher.set(EntityArmorStand.g, vector3f);
+
     }
 
     public void setRightLegPose(Vector3f vector3f) {
+        this.noTickPoseDirty = true; // Paper - Allow updates when not ticking
         this.rightLegPose = vector3f;
         this.datawatcher.set(EntityArmorStand.bh, vector3f);
     }
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftArmorStand.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftArmorStand.java
index 226d3a242c602a3e4d16b6eab11d938a1e3e84ba..e87f293cf26d7ce2a8c385936d09be9b41968cea 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftArmorStand.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftArmorStand.java
@@ -312,5 +312,16 @@ public class CraftArmorStand extends CraftLivingEntity implements ArmorStand {
     public boolean isSlotDisabled(org.bukkit.inventory.EquipmentSlot slot) {
         return getHandle().isSlotDisabled(org.bukkit.craftbukkit.CraftEquipmentSlot.getNMS(slot));
     }
+
+    @Override
+    public boolean canTick() {
+        return this.getHandle().canTick;
+    }
+
+    @Override
+    public void setCanTick(final boolean tick) {
+        this.getHandle().canTick = tick;
+        this.getHandle().canTickSetByAPI = true;
+    }
     // Paper end
 }