优化递归效率

src/core/Entity.ts

@@ -27,9 +27,11 @@ export function traverse(target: Entity, hitChild: (child: Entity, ...params) =>
 				interrupt = true;
 				continue;
 			}
+			if(child.children.length > 0){
 				traverse(child, hitChild, level - 1, false, fullCallback, ...params);
 			}
 		}
+	}
 
 	!interrupt && fullCallback && fullCallback(target);
 }