PaperMC/patches/server/0768-Allow-changing-the-EnderDragon-podium.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Doc <nachito94@msn.com>
Date: Sun, 3 Apr 2022 11:31:42 -0400
Subject: [PATCH] Allow changing the EnderDragon podium


diff --git a/src/main/java/net/minecraft/world/entity/boss/enderdragon/EnderDragon.java b/src/main/java/net/minecraft/world/entity/boss/enderdragon/EnderDragon.java
index 2ede6678a5fe6e1280ee4918b69302f483cc50ff..36893dac635f676ca447133a1bce32429347e4a5 100644
--- a/src/main/java/net/minecraft/world/entity/boss/enderdragon/EnderDragon.java
+++ b/src/main/java/net/minecraft/world/entity/boss/enderdragon/EnderDragon.java
@@ -103,6 +103,10 @@ public class EnderDragon extends Mob implements Enemy {
     private final int[] nodeAdjacency;
     private final BinaryHeap openSet;
     private final Explosion explosionSource; // CraftBukkit - reusable source for CraftTNTPrimed.getSource()
+    // Paper start - Allow changing the EnderDragon podium
+    @Nullable
+    private BlockPos podium;
+    // Paper end - Allow changing the EnderDragon podium
 
     public EnderDragon(EntityType<? extends EnderDragon> entitytypes, Level world) {
         super(EntityType.ENDER_DRAGON, world);
@@ -143,6 +147,19 @@ public class EnderDragon extends Mob implements Enemy {
         return Mob.createMobAttributes().add(Attributes.MAX_HEALTH, 200.0D);
     }
 
+    // Paper start - Allow changing the EnderDragon podium
+    public BlockPos getPodium() {
+        if (this.podium == null) {
+            return EndPodiumFeature.getLocation(this.getFightOrigin());
+        }
+        return this.podium;
+    }
+
+    public void setPodium(@Nullable BlockPos blockPos) {
+        this.podium = blockPos;
+    }
+    // Paper end - Allow changing the EnderDragon podium
+
     @Override
     public boolean isFlapping() {
         float f = Mth.cos(this.flapTime * 6.2831855F);
@@ -994,7 +1011,7 @@ public class EnderDragon extends Mob implements Enemy {
                 d0 = segment2[1] - segment1[1];
             }
         } else {
-            BlockPos blockposition = this.level().getHeightmapPos(Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, EndPodiumFeature.getLocation(this.fightOrigin));
+            BlockPos blockposition = this.level().getHeightmapPos(Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, this.getPodium()); // Paper - Allow changing the EnderDragon podium
             double d1 = Math.max(Math.sqrt(blockposition.distToCenterSqr(this.position())) / 4.0D, 1.0D);
 
             d0 = (double) segmentOffset / d1;
@@ -1021,7 +1038,7 @@ public class EnderDragon extends Mob implements Enemy {
                 vec3d = this.getViewVector(tickDelta);
             }
         } else {
-            BlockPos blockposition = this.level().getHeightmapPos(Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, EndPodiumFeature.getLocation(this.fightOrigin));
+            BlockPos blockposition = this.level().getHeightmapPos(Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, this.getPodium()); // Paper - Allow changing the EnderDragon podium
 
             f1 = Math.max((float) Math.sqrt(blockposition.distToCenterSqr(this.position())) / 4.0F, 1.0F);
             float f3 = 6.0F / f1;
diff --git a/src/main/java/net/minecraft/world/entity/boss/enderdragon/phases/DragonDeathPhase.java b/src/main/java/net/minecraft/world/entity/boss/enderdragon/phases/DragonDeathPhase.java
index f4028b6890fd094360a33403728588380111204d..d6ec0583dbaca95eb6a6444923cc1311a9753825 100644
--- a/src/main/java/net/minecraft/world/entity/boss/enderdragon/phases/DragonDeathPhase.java
+++ b/src/main/java/net/minecraft/world/entity/boss/enderdragon/phases/DragonDeathPhase.java
@@ -32,7 +32,7 @@ public class DragonDeathPhase extends AbstractDragonPhaseInstance {
     public void doServerTick() {
         ++this.time;
         if (this.targetLocation == null) {
-            BlockPos blockPos = this.dragon.level().getHeightmapPos(Heightmap.Types.MOTION_BLOCKING, EndPodiumFeature.getLocation(this.dragon.getFightOrigin()));
+            BlockPos blockPos = this.dragon.level().getHeightmapPos(Heightmap.Types.MOTION_BLOCKING, this.dragon.getPodium()); // Paper - Allow changing the EnderDragon podium
             this.targetLocation = Vec3.atBottomCenterOf(blockPos);
         }
 
diff --git a/src/main/java/net/minecraft/world/entity/boss/enderdragon/phases/DragonHoldingPatternPhase.java b/src/main/java/net/minecraft/world/entity/boss/enderdragon/phases/DragonHoldingPatternPhase.java
index 00228e49c07eeed13b726192d5f9b8f2fc55bb75..bd7be8a5a24f1328dde28ae4a66823c12110fa02 100644
--- a/src/main/java/net/minecraft/world/entity/boss/enderdragon/phases/DragonHoldingPatternPhase.java
+++ b/src/main/java/net/minecraft/world/entity/boss/enderdragon/phases/DragonHoldingPatternPhase.java
@@ -54,7 +54,7 @@ public class DragonHoldingPatternPhase extends AbstractDragonPhaseInstance {
 
     private void findNewTarget() {
         if (this.currentPath != null && this.currentPath.isDone()) {
-            BlockPos blockPos = this.dragon.level().getHeightmapPos(Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, new BlockPos(EndPodiumFeature.getLocation(this.dragon.getFightOrigin())));
+            BlockPos blockPos = this.dragon.level().getHeightmapPos(Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, this.dragon.getPodium()); // Paper - Allow changing the EnderDragon podium
             int i = this.dragon.getDragonFight() == null ? 0 : this.dragon.getDragonFight().getCrystalsAlive();
             if (this.dragon.getRandom().nextInt(i + 3) == 0) {
                 this.dragon.getPhaseManager().setPhase(EnderDragonPhase.LANDING_APPROACH);
diff --git a/src/main/java/net/minecraft/world/entity/boss/enderdragon/phases/DragonLandingApproachPhase.java b/src/main/java/net/minecraft/world/entity/boss/enderdragon/phases/DragonLandingApproachPhase.java
index 80647b1f5192e6f2b660a31413db1fa45fb92f2c..e161bfb06beeada4987272d01a0f140069b37951 100644
--- a/src/main/java/net/minecraft/world/entity/boss/enderdragon/phases/DragonLandingApproachPhase.java
+++ b/src/main/java/net/minecraft/world/entity/boss/enderdragon/phases/DragonLandingApproachPhase.java
@@ -52,7 +52,7 @@ public class DragonLandingApproachPhase extends AbstractDragonPhaseInstance {
     private void findNewTarget() {
         if (this.currentPath == null || this.currentPath.isDone()) {
             int i = this.dragon.findClosestNode();
-            BlockPos blockPos = this.dragon.level().getHeightmapPos(Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, EndPodiumFeature.getLocation(this.dragon.getFightOrigin()));
+            BlockPos blockPos = this.dragon.level().getHeightmapPos(Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, this.dragon.getPodium()); // Paper - Allow changing the EnderDragon podium
             Player player = this.dragon.level().getNearestPlayer(NEAR_EGG_TARGETING, this.dragon, (double)blockPos.getX(), (double)blockPos.getY(), (double)blockPos.getZ());
             int j;
             if (player != null) {
diff --git a/src/main/java/net/minecraft/world/entity/boss/enderdragon/phases/DragonLandingPhase.java b/src/main/java/net/minecraft/world/entity/boss/enderdragon/phases/DragonLandingPhase.java
index 48ebc2ab8ebbdc2292af10b955384bf7d722ade2..24db7fafd31277eb1b82eac4a97b2f979c1d3816 100644
--- a/src/main/java/net/minecraft/world/entity/boss/enderdragon/phases/DragonLandingPhase.java
+++ b/src/main/java/net/minecraft/world/entity/boss/enderdragon/phases/DragonLandingPhase.java
@@ -39,7 +39,7 @@ public class DragonLandingPhase extends AbstractDragonPhaseInstance {
     @Override
     public void doServerTick() {
         if (this.targetLocation == null) {
-            this.targetLocation = Vec3.atBottomCenterOf(this.dragon.level().getHeightmapPos(Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, EndPodiumFeature.getLocation(this.dragon.getFightOrigin())));
+            this.targetLocation = Vec3.atBottomCenterOf(this.dragon.level().getHeightmapPos(Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, this.dragon.getPodium())); // Paper - Allow changing the EnderDragon podium
         }
 
         if (this.targetLocation.distanceToSqr(this.dragon.getX(), this.dragon.getY(), this.dragon.getZ()) < 1.0D) {
diff --git a/src/main/java/net/minecraft/world/entity/boss/enderdragon/phases/DragonTakeoffPhase.java b/src/main/java/net/minecraft/world/entity/boss/enderdragon/phases/DragonTakeoffPhase.java
index 1290090f855840bf64bf3a7ba93e3cb036630dcc..792ff77090fa582a7ffcb7b8c394badfa7586126 100644
--- a/src/main/java/net/minecraft/world/entity/boss/enderdragon/phases/DragonTakeoffPhase.java
+++ b/src/main/java/net/minecraft/world/entity/boss/enderdragon/phases/DragonTakeoffPhase.java
@@ -24,7 +24,7 @@ public class DragonTakeoffPhase extends AbstractDragonPhaseInstance {
     @Override
     public void doServerTick() {
         if (!this.firstTick && this.currentPath != null) {
-            BlockPos blockPos = this.dragon.level().getHeightmapPos(Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, EndPodiumFeature.getLocation(this.dragon.getFightOrigin()));
+            BlockPos blockPos = this.dragon.level().getHeightmapPos(Heightmap.Types.MOTION_BLOCKING_NO_LEAVES, this.dragon.getPodium()); // Paper - Allow changing the EnderDragon podium
             if (!blockPos.closerToCenterThan(this.dragon.position(), 10.0D)) {
                 this.dragon.getPhaseManager().setPhase(EnderDragonPhase.HOLDING_PATTERN);
             }
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEnderDragon.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEnderDragon.java
index 25b3d889a1742c347e60725df8d6f6c1cee264c7..7b7b89e67d53ed70efae714192c5fa32977f3d9c 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEnderDragon.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEnderDragon.java
@@ -73,4 +73,22 @@ public class CraftEnderDragon extends CraftMob implements EnderDragon, CraftEnem
     public int getDeathAnimationTicks() {
         return this.getHandle().dragonDeathTime;
     }
+
+    // Paper start - Allow changing the EnderDragon podium
+    @Override
+    public org.bukkit.Location getPodium() {
+        net.minecraft.core.BlockPos blockPosOrigin = this.getHandle().getPodium();
+        return new org.bukkit.Location(getWorld(), blockPosOrigin.getX(), blockPosOrigin.getY(), blockPosOrigin.getZ());
+    }
+
+    @Override
+    public void setPodium(org.bukkit.Location location) {
+        if (location == null) {
+            this.getHandle().setPodium(null);
+        } else {
+            org.apache.commons.lang.Validate.isTrue(location.getWorld() == null || location.getWorld().equals(getWorld()), "You cannot set a podium in a different world to where the dragon is");
+            this.getHandle().setPodium(io.papermc.paper.util.MCUtil.toBlockPos(location));
+        }
+    }
+    // Paper end - Allow changing the EnderDragon podium
 }