Paper/patches/api/0371-Collision-API.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Owen1212055 <23108066+Owen1212055@users.noreply.github.com>
Date: Wed, 6 Oct 2021 20:10:36 -0400
Subject: [PATCH] Collision API


diff --git a/src/main/java/org/bukkit/RegionAccessor.java b/src/main/java/org/bukkit/RegionAccessor.java
index 44ee56a5956cc17194c767a0c1071a2abffe818a..43dd6c59cceba12f27e6b265acc3ad97eea37abd 100644
--- a/src/main/java/org/bukkit/RegionAccessor.java
+++ b/src/main/java/org/bukkit/RegionAccessor.java
@@ -493,5 +493,15 @@ public interface RegionAccessor extends Keyed { // Paper
      * @return whether a line of sight exists between {@code from} and {@code to}
      */
     public boolean lineOfSightExists(@NotNull Location from, @NotNull Location to);
+
+    /**
+     * Checks if the world collides with the given boundingbox.
+     * This will check for any colliding hard entities (boats, shulkers) / worldborder / blocks.
+     * Does not load chunks that are within the bounding box.
+     *
+     * @param boundingBox the box to check collisions in
+     * @return collides or not
+     */
+    boolean hasCollisionsIn(@NotNull org.bukkit.util.BoundingBox boundingBox);
     // Paper end
 }
diff --git a/src/main/java/org/bukkit/entity/Entity.java b/src/main/java/org/bukkit/entity/Entity.java
index 2ea66188468cf32bcaedc5167d4b9b0c6ea9b0b3..351a7d0aeab5d83564dd543935ba503ea0b68d60 100644
--- a/src/main/java/org/bukkit/entity/Entity.java
+++ b/src/main/java/org/bukkit/entity/Entity.java
@@ -971,4 +971,26 @@ public interface Entity extends Metadatable, CommandSender, Nameable, Persistent
      */
     boolean isInPowderedSnow();
     // Paper end
+
+    // Paper Start - Collision API
+    /**
+     * Checks for any collisions with the entity's bounding box at the provided location.
+     * This will check for any colliding entities (boats, shulkers) / worldborder / blocks.
+     * Does not load chunks that are within the bounding box at the specified location.
+     *
+     * @param location the location to check collisions in
+     * @return collides or not
+     */
+    boolean collidesAt(@NotNull Location location);
+
+    /**
+     * This checks using the given boundingbox as the entity's boundingbox if the entity would collide with anything.
+     * This will check for any colliding entities (boats, shulkers) / worldborder / blocks.
+     * Does not load chunks that are within the bounding box.
+     *
+     * @param boundingBox the box to check collisions in
+     * @return collides or not
+     */
+    boolean wouldCollideUsing(@NotNull BoundingBox boundingBox);
+    // Paper End - Collision API
 }