Paper/patches/server/0839-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 20:10:44 -0400
Subject: [PATCH] Collision API


diff --git a/src/main/java/org/bukkit/craftbukkit/CraftRegionAccessor.java b/src/main/java/org/bukkit/craftbukkit/CraftRegionAccessor.java
index 57bb76050919d187adef4bfa8b21416a70867d23..254cdf5efe85583c5ef126d46af7c5246daa97c2 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftRegionAccessor.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftRegionAccessor.java
@@ -1021,5 +1021,12 @@ public abstract class CraftRegionAccessor implements RegionAccessor {
 
         return this.getHandle().clip(new net.minecraft.world.level.ClipContext(start, end, net.minecraft.world.level.ClipContext.Block.COLLIDER, net.minecraft.world.level.ClipContext.Fluid.NONE, null)).getType() == net.minecraft.world.phys.HitResult.Type.MISS;
     }
+
+    @Override
+    public boolean hasCollisionsIn(@org.jetbrains.annotations.NotNull org.bukkit.util.BoundingBox boundingBox) {
+        net.minecraft.world.phys.AABB aabb = new AABB(boundingBox.getMinX(), boundingBox.getMinY(), boundingBox.getMinZ(), boundingBox.getMaxX(), boundingBox.getMaxY(), boundingBox.getMaxZ(), false);
+
+        return !this.getHandle().noCollision(aabb);
+    }
     // Paper end
 }
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
index 6fdde2f766b91833dc2318526f84e96cb26233b4..8733255559e63d8709d2502e58f16decdf1714ae 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
@@ -1435,4 +1435,19 @@ public abstract class CraftEntity implements org.bukkit.entity.Entity {
         return getHandle().isInPowderSnow || getHandle().wasInPowderSnow; // depending on the location in the entity "tick" either could be needed.
     }
     // Paper end
+    // Paper Start - Collision API
+    @Override
+    public boolean collidesAt(@org.jetbrains.annotations.NotNull Location location) {
+        net.minecraft.world.phys.AABB aabb = this.getHandle().getBoundingBoxAt(location.getX(), location.getY(), location.getZ());
+
+        return !this.getHandle().level().noCollision(this.getHandle(), aabb);
+    }
+
+    @Override
+    public boolean wouldCollideUsing(@org.jetbrains.annotations.NotNull BoundingBox boundingBox) {
+        net.minecraft.world.phys.AABB aabb = new AABB(boundingBox.getMinX(), boundingBox.getMinY(), boundingBox.getMinZ(), boundingBox.getMaxX(), boundingBox.getMaxY(), boundingBox.getMaxZ(), false);
+
+        return !this.getHandle().level().noCollision(this.getHandle(), aabb);
+    }
+    // Paper End - Collision API
 }