[ci skip] Move EntityUtil to correct directory (#12092)

paper-server/src/main/java/ca/spottedleaf/moonrise/common/util/EntityUtil.java

@@ -0,0 +1,44 @@
+package ca.spottedleaf.moonrise.common.util;
+
+import net.minecraft.world.entity.Entity;
+import net.minecraft.world.phys.Vec3;
+import java.text.DecimalFormat;
+import java.util.ArrayList;
+import java.util.List;
+
+public final class EntityUtil {
+
+    private static final ThreadLocal<DecimalFormat> THREE_DECIMAL_PLACES = ThreadLocal.withInitial(() -> {
+        return new DecimalFormat("#,##0.000");
+    });
+
+    private static String formatVec(final Vec3 vec) {
+        final DecimalFormat format = THREE_DECIMAL_PLACES.get();
+
+        return "(" + format.format(vec.x) + "," + format.format(vec.y) + "," + format.format(vec.z) + ")";
+    }
+
+    private static String dumpEntityWithoutReferences(final Entity entity) {
+        if (entity == null) {
+            return "{null}";
+        }
+
+        return "{type=" + entity.getClass().getSimpleName() + ",id=" + entity.getId() + ",uuid=" + entity.getUUID() + ",pos=" + formatVec(entity.position())
+            + ",mot=" + formatVec(entity.getDeltaMovement()) + ",aabb=" + entity.getBoundingBox() + ",removed=" + entity.getRemovalReason() + ",has_vehicle=" + (entity.getVehicle() != null)
+            + ",passenger_count=" + entity.getPassengers().size();
+    }
+
+    public static String dumpEntity(final Entity entity) {
+        final List<Entity> passengers = entity.getPassengers();
+        final List<String> passengerStrings = new ArrayList<>(passengers.size());
+
+        for (final Entity passenger : passengers) {
+            passengerStrings.add("(" + dumpEntityWithoutReferences(passenger) + ")");
+        }
+
+        return "{root=[" + dumpEntityWithoutReferences(entity) + "], vehicle=[" + dumpEntityWithoutReferences(entity.getVehicle())
+            + "], passengers=[" + String.join(",", passengerStrings) + "]";
+    }
+
+    private EntityUtil() {}
+}