Paper/patches/server-remapped/0271-Slime-Pathfinder-Events.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: BillyGalbreath <Blake.Galbreath@GMail.com>
Date: Fri, 24 Aug 2018 08:18:42 -0500
Subject: [PATCH] Slime Pathfinder Events


diff --git a/src/main/java/net/minecraft/world/entity/monster/Slime.java b/src/main/java/net/minecraft/world/entity/monster/Slime.java
index fc8f26e988f1e4826dcfdcf071293bb356163e62..120ceb28ee3aee8a09cf67b45ac95d3d6613c133 100644
--- a/src/main/java/net/minecraft/world/entity/monster/Slime.java
+++ b/src/main/java/net/minecraft/world/entity/monster/Slime.java
@@ -24,7 +24,6 @@ import net.minecraft.world.effect.MobEffects;
 import net.minecraft.world.entity.Entity;
 import net.minecraft.world.entity.EntityDimensions;
 import net.minecraft.world.entity.EntityType;
-import net.minecraft.world.entity.LivingEntity;
 import net.minecraft.world.entity.Mob;
 import net.minecraft.world.entity.MobSpawnType;
 import net.minecraft.world.entity.Pose;
@@ -43,6 +42,13 @@ import net.minecraft.world.level.WorldGenLevel;
 import net.minecraft.world.level.biome.Biomes;
 import net.minecraft.world.level.levelgen.WorldgenRandom;
 import net.minecraft.world.phys.Vec3;
+// Paper start
+import com.destroystokyo.paper.event.entity.SlimeChangeDirectionEvent;
+import com.destroystokyo.paper.event.entity.SlimeSwimEvent;
+import com.destroystokyo.paper.event.entity.SlimeTargetLivingEntityEvent;
+import com.destroystokyo.paper.event.entity.SlimeWanderEvent;
+import org.bukkit.entity.LivingEntity;
+// Paper end
 // CraftBukkit start
 import java.util.ArrayList;
 import java.util.List;
@@ -103,6 +109,7 @@ public class Slime extends Mob implements Enemy {
     @Override
     public void addAdditionalSaveData(CompoundTag tag) {
         super.addAdditionalSaveData(tag);
+        tag.putBoolean("Paper.canWander", this.canWander); // Paper
         tag.putInt("Size", this.getSize() - 1);
         tag.putBoolean("wasOnGround", this.wasOnGround);
     }
@@ -117,6 +124,11 @@ public class Slime extends Mob implements Enemy {
 
         this.setSize(i + 1, false);
         super.readAdditionalSaveData(tag);
+        // Paper start - check exists before loading or this will be loaded as false
+        if (tag.contains("Paper.canWander")) {
+            this.canWander = tag.getBoolean("Paper.canWander");
+        }
+        // Paper end
         this.wasOnGround = tag.getBoolean("wasOnGround");
     }
 
@@ -218,7 +230,7 @@ public class Slime extends Mob implements Enemy {
                 super.remove();
                 return;
             }
-            List<LivingEntity> slimes = new ArrayList<>(j);
+            List<net.minecraft.world.entity.LivingEntity> slimes = new ArrayList<>(j);
             // CraftBukkit end
 
             for (int l = 0; l < k; ++l) {
@@ -242,7 +254,7 @@ public class Slime extends Mob implements Enemy {
             if (CraftEventFactory.callEntityTransformEvent(this, slimes, EntityTransformEvent.TransformReason.SPLIT).isCancelled()) {
                 return;
             }
-            for (LivingEntity living : slimes) {
+            for (net.minecraft.world.entity.LivingEntity living : slimes) {
                 this.level.addEntity(living, org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.SLIME_SPLIT); // CraftBukkit - SpawnReason
             }
             // CraftBukkit end
@@ -255,7 +267,7 @@ public class Slime extends Mob implements Enemy {
     public void push(Entity entity) {
         super.push(entity);
         if (entity instanceof IronGolem && this.isDealsDamage()) {
-            this.dealDamage((LivingEntity) entity);
+            this.dealDamage((net.minecraft.world.entity.LivingEntity) entity);
         }
 
     }
@@ -263,18 +275,18 @@ public class Slime extends Mob implements Enemy {
     @Override
     public void playerTouch(Player player) {
         if (this.isDealsDamage()) {
-            this.dealDamage((LivingEntity) player);
+            this.dealDamage((net.minecraft.world.entity.LivingEntity) player);
         }
 
     }
 
-    protected void dealDamage(LivingEntity target) {
+    protected void dealDamage(net.minecraft.world.entity.LivingEntity target) {
         if (this.isAlive()) {
             int i = this.getSize();
 
             if (this.distanceToSqr((Entity) target) < 0.6D * (double) i * 0.6D * (double) i && this.canSee(target) && target.hurt(DamageSource.mobAttack(this), this.getAttackDamage())) {
                 this.playSound(SoundEvents.SLIME_ATTACK, 1.0F, (this.random.nextFloat() - this.random.nextFloat()) * 0.2F + 1.0F);
-                this.doEnchantDamageEffects((LivingEntity) this, (Entity) target);
+                this.doEnchantDamageEffects((net.minecraft.world.entity.LivingEntity) this, (Entity) target);
             }
         }
 
@@ -396,7 +408,7 @@ public class Slime extends Mob implements Enemy {
 
         @Override
         public boolean canUse() {
-            return !this.slime.isPassenger();
+            return !this.slime.isPassenger() && this.slime.canWander && new SlimeWanderEvent((org.bukkit.entity.Slime) this.slime.getBukkitEntity()).callEvent(); // Paper
         }
 
         @Override
@@ -417,7 +429,7 @@ public class Slime extends Mob implements Enemy {
 
         @Override
         public boolean canUse() {
-            return (this.slime.isInWater() || this.slime.isInLava()) && this.slime.getMoveControl() instanceof Slime.SlimeMoveControl;
+            return (this.slime.isInWater() || this.slime.isInLava()) && this.slime.getMoveControl() instanceof Slime.SlimeMoveControl && this.slime.canWander && new SlimeSwimEvent((org.bukkit.entity.Slime) this.slime.getBukkitEntity()).callEvent(); // Paper
         }
 
         @Override
@@ -443,14 +455,18 @@ public class Slime extends Mob implements Enemy {
 
         @Override
         public boolean canUse() {
-            return this.slime.getTarget() == null && (this.slime.onGround || this.slime.isInWater() || this.slime.isInLava() || this.slime.hasEffect(MobEffects.LEVITATION)) && this.slime.getMoveControl() instanceof Slime.SlimeMoveControl;
+            return this.slime.getTarget() == null && (this.slime.onGround || this.slime.isInWater() || this.slime.isInLava() || this.slime.hasEffect(MobEffects.LEVITATION)) && this.slime.getMoveControl() instanceof Slime.SlimeMoveControl && this.slime.canWander; // Paper - add canWander
         }
 
         @Override
         public void tick() {
             if (--this.nextRandomizeTime <= 0) {
                 this.nextRandomizeTime = 40 + this.slime.getRandom().nextInt(60);
-                this.chosenDegrees = (float) this.slime.getRandom().nextInt(360);
+                // Paper start
+                SlimeChangeDirectionEvent event = new SlimeChangeDirectionEvent((org.bukkit.entity.Slime) this.slime.getBukkitEntity(), (float) this.slime.getRandom().nextInt(360));
+                if (!this.slime.canWander || !event.callEvent()) return;
+                this.chosenDegrees = event.getNewYaw();
+                // Paper end
             }
 
             ((Slime.SlimeMoveControl) this.slime.getMoveControl()).setDirection(this.chosenDegrees, false);
@@ -469,9 +485,17 @@ public class Slime extends Mob implements Enemy {
 
         @Override
         public boolean canUse() {
-            LivingEntity entityliving = this.slime.getTarget();
+            net.minecraft.world.entity.LivingEntity entityliving = this.slime.getTarget();
 
-            return entityliving == null ? false : (!entityliving.isAlive() ? false : (entityliving instanceof Player && ((Player) entityliving).abilities.invulnerable ? false : this.slime.getMoveControl() instanceof Slime.SlimeMoveControl));
+            // Paper start
+            if (entityliving == null || !entityliving.isAlive()) {
+                return false;
+            }
+            if (entityliving instanceof Player && ((Player) entityliving).abilities.invulnerable) {
+                return false;
+            }
+            return this.slime.getMoveControl() instanceof Slime.SlimeMoveControl && this.slime.canWander && new SlimeTargetLivingEntityEvent((org.bukkit.entity.Slime) this.slime.getBukkitEntity(), (LivingEntity) entityliving.getBukkitEntity()).callEvent();
+            // Paper end
         }
 
         @Override
@@ -482,9 +506,17 @@ public class Slime extends Mob implements Enemy {
 
         @Override
         public boolean canContinueToUse() {
-            LivingEntity entityliving = this.slime.getTarget();
+            net.minecraft.world.entity.LivingEntity entityliving = this.slime.getTarget();
 
-            return entityliving == null ? false : (!entityliving.isAlive() ? false : (entityliving instanceof Player && ((Player) entityliving).abilities.invulnerable ? false : --this.growTiredTimer > 0));
+            // Paper start
+            if (entityliving == null || !entityliving.isAlive()) {
+                return false;
+            }
+            if (entityliving instanceof Player && ((Player) entityliving).abilities.invulnerable) {
+                return false;
+            }
+            return --this.growTiredTimer > 0 && this.slime.canWander && new SlimeTargetLivingEntityEvent((org.bukkit.entity.Slime) this.slime.getBukkitEntity(), (LivingEntity) entityliving.getBukkitEntity()).callEvent();
+            // Paper end
         }
 
         @Override
@@ -492,6 +524,13 @@ public class Slime extends Mob implements Enemy {
             this.slime.lookAt((Entity) this.slime.getTarget(), 10.0F, 10.0F);
             ((Slime.SlimeMoveControl) this.slime.getMoveControl()).setDirection(this.slime.yRot, this.slime.isDealsDamage());
         }
+
+        // Paper start - clear timer and target when goal resets
+        public void stop() {
+            this.growTiredTimer = 0;
+            this.slime.setTarget(null);
+        }
+        // Paper end
     }
 
     static class SlimeMoveControl extends MoveControl {
@@ -550,4 +589,15 @@ public class Slime extends Mob implements Enemy {
             }
         }
     }
+
+    // Paper start
+    private boolean canWander = true;
+    public boolean canWander() {
+        return canWander;
+    }
+
+    public void setWander(boolean canWander) {
+        this.canWander = canWander;
+    }
+    // Paper end
 }
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftSlime.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftSlime.java
index 93af0fd9e15954d7d9f28d7dc29ee18055908348..340036135588d06e43cbd229dd3a6613b04bb9ab 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftSlime.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftSlime.java
@@ -34,4 +34,14 @@ public class CraftSlime extends CraftMob implements Slime {
     public EntityType getType() {
         return EntityType.SLIME;
     }
+
+    // Paper start
+    public boolean canWander() {
+        return getHandle().canWander();
+    }
+
+    public void setWander(boolean canWander) {
+        getHandle().setWander(canWander);
+    }
+    // Paper end
 }