Paper/patches/server/0783-Allow-to-change-the-podium-for-the-EnderDragon.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 to change the podium for the EnderDragon


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 1621a06eff438eccdbc04a2abebd718567c320b3..ccc68b1a1b1b087c52d91591ba4c63b075bfdc66 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 - add var for save custom podium
+    @Nullable
+    private BlockPos podium;
+    // Paper end
 
     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
+    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
+
     @Override
     public boolean isFlapping() {
         float f = Mth.cos(this.flapTime * 6.2831855F);
@@ -993,7 +1010,7 @@ 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 - use custom podium
             double d1 = Math.max(Math.sqrt(blockposition.distToCenterSqr(this.position())) / 4.0D, 1.0D);
 
             d0 = (double) segmentOffset / d1;
@@ -1020,7 +1037,7 @@ 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 - use custom 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 247cf0684c1b80a44ad021dcbd35ffc507232ccf..b9ed29f8ee130d513d832784ec824282c790c16c 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 - use custom 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 72ba595bd538a23499449b7de655190a10ef1f5f..4ab60d13beeb4e88bfc7e2b5638672835e225361 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 - use custom 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 2e8c922b96d7bc3a5d58702f3c7634ac9589977d..2cdd74b052948d8457e4eb5cd35fa8280bc039bb 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 - use custom 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 9dfa807e0288a95636fd44214625d64cc49e5e76..b97b33b4b146e6925a24c199ec54fa3f8a8ac0ec 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 - use custom 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 bbf85d7d30ea4f2f934a45343cead94aadbc0b70..c981fece56bdd17f0b8799994c6f5f9e9a1fc60e 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 - use custom 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 1cfba7aaa807f70ce6d88bf67c7ddacecf55d295..492fdc855fe9735b614b6831aa5baaa6b252cfb6 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
+    @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
 }