Paper/patches/server/0031-Entity-Origin-API.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Byteflux <byte@byteflux.net>
Date: Tue, 1 Mar 2016 23:45:08 -0600
Subject: [PATCH] Entity Origin API
diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
index 3fce997cc390136a16c941f0461b20d2bc046948..b1771e25c13b555d3316aca35f8a97ed4ce8f275 100644
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--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -2215,6 +2215,15 @@ public class ServerLevel extends Level implements WorldGenLevel {
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entity.updateDynamicGameEventListener(DynamicGameEventListener::add);
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entity.valid = true; // CraftBukkit
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+ // Paper start - Set origin location when the entity is being added to the world
+ if (entity.getOriginVector() == null) {
+ entity.setOrigin(entity.getBukkitEntity().getLocation());
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+ }
+ // Default to current world if unknown, gross assumption but entities rarely change world
+ if (entity.getOriginWorld() == null) {
+ entity.setOrigin(entity.getOriginVector().toLocation(getWorld()));
+ }
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+ // Paper end
}
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public void onTrackingEnd(Entity entity) {
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diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
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index 0cd735648314872e98e310627247b9ad425ab64d..5cf04b209ae3fa6c52ad45e726343418d0de311f 100644
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--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -304,7 +304,27 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
public long activatedTick = Integer.MIN_VALUE;
public void inactiveTick() { }
// Spigot end
+ // Paper start
+ @javax.annotation.Nullable
+ private org.bukkit.util.Vector origin;
+ @javax.annotation.Nullable
+ private UUID originWorld;
+
+ public void setOrigin(@javax.annotation.Nonnull Location location) {
+ this.origin = location.toVector();
+ this.originWorld = location.getWorld().getUID();
+ }
+ @javax.annotation.Nullable
+ public org.bukkit.util.Vector getOriginVector() {
+ return this.origin != null ? this.origin.clone() : null;
+ }
+
+ @javax.annotation.Nullable
+ public UUID getOriginWorld() {
+ return this.originWorld;
+ }
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+ // Paper end
public float getBukkitYaw() {
return this.yRot;
}
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@@ -1928,6 +1948,15 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
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this.bukkitEntity.storeBukkitValues(nbt);
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}
// CraftBukkit end
+ // Paper start - Save the entity's origin location
+ if (this.origin != null) {
+ UUID originWorld = this.originWorld != null ? this.originWorld : this.level != null ? this.level.getWorld().getUID() : null;
+ if (originWorld != null) {
+ nbt.putUUID("Paper.OriginWorld", originWorld);
+ }
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+ nbt.put("Paper.Origin", this.newDoubleList(origin.getX(), origin.getY(), origin.getZ()));
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+ }
+ // Paper end
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return nbt;
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} catch (Throwable throwable) {
CrashReport crashreport = CrashReport.forThrowable(throwable, "Saving entity NBT");
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@@ -2054,6 +2083,20 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
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}
// CraftBukkit end
+ // Paper start - Restore the entity's origin location
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+ ListTag originTag = nbt.getList("Paper.Origin", 6);
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+ if (!originTag.isEmpty()) {
+ UUID originWorld = null;
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+ if (nbt.contains("Paper.OriginWorld")) {
+ originWorld = nbt.getUUID("Paper.OriginWorld");
+ } else if (this.level != null) {
+ originWorld = this.level.getWorld().getUID();
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+ }
+ this.originWorld = originWorld;
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+ origin = new org.bukkit.util.Vector(originTag.getDouble(0), originTag.getDouble(1), originTag.getDouble(2));
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+ }
+ // Paper end
+
} catch (Throwable throwable) {
CrashReport crashreport = CrashReport.forThrowable(throwable, "Loading entity NBT");
CrashReportCategory crashreportsystemdetails = crashreport.addCategory("Entity being loaded");
diff --git a/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java b/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java
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index c125564cfca5c4a616e11b334a9ec7929ebea496..561b8d6fcf4d511fb026bcc2c02054e56589d0b7 100644
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--- a/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java
+++ b/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java
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@@ -339,6 +339,14 @@ public class FallingBlockEntity extends Entity {
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this.blockState = Blocks.SAND.defaultBlockState();
}
+ // Paper start - Try and load origin location from the old NBT tags for backwards compatibility
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+ if (nbt.contains("SourceLoc_x")) {
+ int srcX = nbt.getInt("SourceLoc_x");
+ int srcY = nbt.getInt("SourceLoc_y");
+ int srcZ = nbt.getInt("SourceLoc_z");
+ this.setOrigin(new org.bukkit.Location(level.getWorld(), srcX, srcY, srcZ));
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+ }
+ // Paper end
}
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public void setHurtsEntities(float fallHurtAmount, int fallHurtMax) {
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diff --git a/src/main/java/net/minecraft/world/entity/item/PrimedTnt.java b/src/main/java/net/minecraft/world/entity/item/PrimedTnt.java
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index 43ec4bc45a3e553fbbf47aaf613f6e0aad2319cf..aa0dfd08aefbb9363ec96080432f0f75d71b0b95 100644
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--- a/src/main/java/net/minecraft/world/entity/item/PrimedTnt.java
+++ b/src/main/java/net/minecraft/world/entity/item/PrimedTnt.java
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@@ -117,6 +117,14 @@ public class PrimedTnt extends Entity {
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@Override
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protected void readAdditionalSaveData(CompoundTag nbt) {
this.setFuse(nbt.getShort("Fuse"));
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+ // Paper start - Try and load origin location from the old NBT tags for backwards compatibility
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+ if (nbt.contains("SourceLoc_x")) {
+ int srcX = nbt.getInt("SourceLoc_x");
+ int srcY = nbt.getInt("SourceLoc_y");
+ int srcZ = nbt.getInt("SourceLoc_z");
+ this.setOrigin(new org.bukkit.Location(level.getWorld(), srcX, srcY, srcZ));
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+ }
+ // Paper end
}
@Nullable
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
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index 55bf95017d58bb61f9c6af27335c88421c74c4aa..62c2780b165a520e85f17fdf5c0d1c29b7579ebc 100644
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--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
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@@ -1217,5 +1217,20 @@ public abstract class CraftEntity implements org.bukkit.entity.Entity {
return ret;
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}
+
+ @Override
+ public Location getOrigin() {
+ Vector originVector = this.getHandle().getOriginVector();
+ if (originVector == null) {
+ return null;
+ }
+ World world = this.getWorld();
+ if (this.getHandle().getOriginWorld() != null) {
+ world = org.bukkit.Bukkit.getWorld(this.getHandle().getOriginWorld());
+ }
+
+ //noinspection ConstantConditions
+ return originVector.toLocation(world);
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+ }
// Paper end
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}