improve the jackass test

Spigot-Server-Patches/Check-entity-count-additions-and-mark-entities-remov.patch

@@ -13,8 +13,21 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
          }
  
 +        // Paper start - Try to catch plugins doing indecent things
-+        if (entity.aa && entity.getChunkX() == this.locX && entity.getChunkY() == k && entity.getChunkZ() == this.locZ) {
-+            throw new IllegalStateException("Hey Jackass don't do that.");
++        if (entity.aa) {
++            boolean thisChunk = entity.getChunkX() == this.locX && entity.getChunkY() == k && entity.getChunkZ() == this.locZ;
++            String chunkName = entity.getWorld().getWorld().getName() + ":" + entity.getChunkX() + "," + entity.getChunkY() + "," + entity.getChunkZ();
++            if (!thisChunk) {
++                throw new IllegalStateException("Entity Already in another chunk: " + chunkName);
++            } else if (this.entitySlices[k].contains(entity)) {
++                throw new IllegalStateException("Double Chunk Add to: " + chunkName);
++            } else {
++                for (int i1 = 0; i1 < this.entitySlices.length; i1++) {
++                    if (this.entitySlices[i1].contains(entity)) {
++                        throw new IllegalStateException("Entity was found in another slice of this chunk, tried: " + k + ", was in: " + chunkName);
++                    }
++                }
++                new Throwable("Improperly detected double chunk add. Was not actually in this chunk.").printStackTrace();
++            }
 +        }
 +        // Paper end
 +