From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: dfsek <dfsek@protonmail.com>
Date: Tue, 15 Sep 2020 21:59:16 -0700
Subject: [PATCH] Add StructureLocateEvent


diff --git a/src/main/java/io/papermc/paper/event/world/StructureLocateEvent.java b/src/main/java/io/papermc/paper/event/world/StructureLocateEvent.java
new file mode 100644
index 0000000000000000000000000000000000000000..45b6694fc5741831e2df638b1f760a3ca28a4907
--- /dev/null
+++ b/src/main/java/io/papermc/paper/event/world/StructureLocateEvent.java
@@ -0,0 +1,155 @@
+package io.papermc.paper.event.world;
+
+import org.bukkit.Location;
+import org.bukkit.StructureType;
+import org.bukkit.World;
+import org.bukkit.event.Cancellable;
+import org.bukkit.event.HandlerList;
+import org.bukkit.event.world.WorldEvent;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * Called <b>before</b> a structure/feature is located.
+ * This happens when:
+ * <ul>
+ *     <li>The /locate command is used.<br></li>
+ *     <li>An Eye of Ender is used.</li>
+ *     <li>An Explorer/Treasure Map is activated.</li>
+ *     <li>{@link World#locateNearestStructure(Location, StructureType, int, boolean)} is invoked.</li>
+ * </ul>
+ */
+public class StructureLocateEvent extends WorldEvent implements Cancellable {
+    private static final HandlerList handlers = new HandlerList();
+    private final Location origin;
+    private Location result = null;
+    private StructureType type;
+    private int radius;
+    private boolean findUnexplored;
+    private boolean cancelled = false;
+
+    public StructureLocateEvent(@NotNull World world, @NotNull Location origin, @NotNull StructureType structureType, int radius, boolean findUnexplored) {
+        super(world);
+        this.origin = origin;
+        this.type = structureType;
+        this.radius = radius;
+        this.findUnexplored = findUnexplored;
+    }
+
+    @NotNull
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
+
+    @NotNull
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    /**
+     * Gets the location set as the structure location, if it was defined.
+     * <p>
+     * Returns {@code null} if it has not been set by {@link StructureLocateEvent#setResult(Location)}.
+     * Since this event fires <i>before</i> the search is done, the actual location is unknown at this point.
+     *
+     * @return The result location, if it has been set. null if it has not.
+     * @see World#locateNearestStructure(Location, StructureType, int, boolean)
+     */
+    @Nullable
+    public Location getResult() {
+        return result;
+    }
+
+    /**
+     * Sets the result {@link Location}. This causes the search to be skipped, and the location passed here to be used as the result.
+     *
+     * @param result the {@link Location} of the structure.
+     */
+    public void setResult(@Nullable Location result) {
+        this.result = result;
+    }
+
+    /**
+     * Gets the {@link StructureType} that is to be located.
+     *
+     * @return the structure type.
+     */
+    @NotNull
+    public StructureType getType() {
+        return type;
+    }
+
+    /**
+     * Sets the {@link StructureType} that is to be located.
+     *
+     * @param type the structure type.
+     */
+    public void setType(@NotNull StructureType type) {
+        this.type = type;
+    }
+
+    /**
+     * Gets the {@link Location} from which the search is to be conducted.
+     *
+     * @return {@link Location} where search begins
+     */
+    @NotNull
+    public Location getOrigin() {
+        return origin;
+    }
+
+    /**
+     * Gets the search radius in which to attempt locating the structure.
+     * <p>
+     * This radius may not always be obeyed during the structure search!
+     *
+     * @return the search radius.
+     */
+    public int getRadius() {
+        return radius;
+    }
+
+    /**
+     * Sets the search radius in which to attempt locating the structure.
+     * <p>
+     * This radius may not always be obeyed during the structure search!
+     *
+     * @param radius the search radius.
+     */
+    public void setRadius(int radius) {
+        this.radius = radius;
+    }
+
+    /**
+     * Gets whether to search exclusively for unexplored structures.
+     * <p>
+     * As with the search radius, this value is not always obeyed.
+     *
+     * @return Whether to search for only unexplored structures.
+     */
+    public boolean shouldFindUnexplored() {
+        return findUnexplored;
+    }
+
+    /**
+     * Sets whether to search exclusively for unexplored structures.
+     * <p>
+     * As with the search radius, this value is not always obeyed.
+     *
+     * @param findUnexplored Whether to search for only unexplored structures.
+     */
+    public void setFindUnexplored(boolean findUnexplored) {
+        this.findUnexplored = findUnexplored;
+    }
+
+    @Override
+    public boolean isCancelled() {
+        return cancelled;
+    }
+
+    @Override
+    public void setCancelled(boolean cancel) {
+        this.cancelled = cancel;
+    }
+}