Add Entity Origin API

This replaces the TNT and Falling Block Source Location API with a more
general purpose API that works with all entities.

Spigot-API-Patches/0006-Entity-Origin-API.patch

@@ -1,14 +1,34 @@
-From 77c518b68d30af9a16dee08c8352fdeb2c9ad371 Mon Sep 17 00:00:00 2001
+From b63b68858570e7fa3b29c47c4124fcc69bd87098 Mon Sep 17 00:00:00 2001
 From: Byteflux <byte@byteflux.net>
 Date: Mon, 29 Feb 2016 17:50:31 -0600
-Subject: [PATCH] FallingBlock and TNTPrimed source location API
+Subject: [PATCH] Entity Origin API
 
 
+diff --git a/src/main/java/org/bukkit/entity/Entity.java b/src/main/java/org/bukkit/entity/Entity.java
+index 9f4d48b..b82d112 100644
+--- a/src/main/java/org/bukkit/entity/Entity.java
++++ b/src/main/java/org/bukkit/entity/Entity.java
+@@ -374,4 +374,15 @@ public interface Entity extends Metadatable, CommandSender {
+ 
+     Spigot spigot();
+     // Spigot End
++
++    // Paper start
++    /**
++     * Gets the location where this entity originates from.
++     * <p>
++     * This value can be null if the entity hasn't yet been added to the world.
++     *
++     * @return Location where entity originates or null if not yet added
++     */
++    Location getOrigin();
++    // Paper end
+ }
 diff --git a/src/main/java/org/bukkit/entity/FallingBlock.java b/src/main/java/org/bukkit/entity/FallingBlock.java
-index bc56fa2..ae9033c 100644
+index bc56fa2..360e149 100644
 --- a/src/main/java/org/bukkit/entity/FallingBlock.java
 +++ b/src/main/java/org/bukkit/entity/FallingBlock.java
-@@ -59,4 +59,11 @@ public interface FallingBlock extends Entity {
+@@ -59,4 +59,13 @@ public interface FallingBlock extends Entity {
       * @param hurtEntities whether entities will be damaged by this block.
       */
      void setHurtEntities(boolean hurtEntities);
@@ -17,14 +37,16 @@ index bc56fa2..ae9033c 100644
 +     * Gets the source block location of the FallingBlock
 +     *
 +     * @return the source block location the FallingBlock was spawned from
++     * @deprecated replaced by {@link Entity#getOrigin()}
 +     */
++    @Deprecated
 +    public org.bukkit.Location getSourceLoc();
  }
 diff --git a/src/main/java/org/bukkit/entity/TNTPrimed.java b/src/main/java/org/bukkit/entity/TNTPrimed.java
-index 3ce322d..74b82f9 100644
+index 3ce322d..69df487 100644
 --- a/src/main/java/org/bukkit/entity/TNTPrimed.java
 +++ b/src/main/java/org/bukkit/entity/TNTPrimed.java
-@@ -35,4 +35,11 @@ public interface TNTPrimed extends Explosive {
+@@ -35,4 +35,13 @@ public interface TNTPrimed extends Explosive {
       * @return the source of this primed TNT
       */
      public Entity getSource();
@@ -33,7 +55,9 @@ index 3ce322d..74b82f9 100644
 +     * Gets the source block location of the TNTPrimed
 +     *
 +     * @return the source block location the TNTPrimed was spawned from
++     * @deprecated replaced by {@link Entity#getOrigin()}
 +     */
++    @Deprecated
 +    public org.bukkit.Location getSourceLoc();
  }
 --