Add StructuresLocateEvent as replacement for StructureLocateEvent (#7524)

patches/api/0311-Add-more-line-of-sight-methods.patch

@@ -0,0 +1,49 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: TwoLeggedCat <80929284+TwoLeggedCat@users.noreply.github.com>
+Date: Sat, 29 May 2021 14:33:18 -0500
+Subject: [PATCH] Add more line of sight methods
+
+
+diff --git a/src/main/java/org/bukkit/World.java b/src/main/java/org/bukkit/World.java
+index def9f0f9803e71cbe57abcffeb9114a5ab462e54..d149dd1d3d2703a428006e0c3ab5f9251e560882 100644
+--- a/src/main/java/org/bukkit/World.java
++++ b/src/main/java/org/bukkit/World.java
+@@ -76,6 +76,14 @@ public interface World extends RegionAccessor, WorldInfo, PluginMessageRecipient
+      */
+     @NotNull
+     io.papermc.paper.world.MoonPhase getMoonPhase();
++
++    /**
++     * Tell whether a line of sight exists between the given locations
++     * @param from Location to start at
++     * @param to target Location
++     * @return whether a line of sight exists between {@code from} and {@code to}
++     */
++    public boolean lineOfSightExists(@NotNull Location from, @NotNull Location to);
+     // Paper end
+ 
+     /**
+diff --git a/src/main/java/org/bukkit/entity/LivingEntity.java b/src/main/java/org/bukkit/entity/LivingEntity.java
+index 330eab77547ae059f716418f71ad1d3391a57a9b..cda05df6784dd4d6a09710a416dcb71c016dabfc 100644
+--- a/src/main/java/org/bukkit/entity/LivingEntity.java
++++ b/src/main/java/org/bukkit/entity/LivingEntity.java
+@@ -483,6 +483,19 @@ public interface LivingEntity extends Attributable, Damageable, ProjectileSource
+      */
+     public boolean hasLineOfSight(@NotNull Entity other);
+ 
++    // Paper start
++    /**
++     * Checks whether the living entity has block line of sight to the given block.
++     * <p>
++     * This uses the same algorithm that hostile mobs use to find the closest
++     * player.
++     *
++     * @param location the location to determine line of sight to
++     * @return true if there is a line of sight, false if not
++     */
++    public boolean hasLineOfSight(@NotNull Location location);
++    // Paper end
++
+     /**
+      * Returns if the living entity despawns when away from players or not.
+      * <p>