PocketMine/PocketMine-MP — pull request #1711 by Yosshi999 (2014-07-17 05:34:11+00:00)
Title: fix #1707

there should be the ID of Stone(=1) but self::STONE means stone::STONE(=0,the damage of Stone).
To use block::STONE(=1,the ID of Stone),we should write "parent::STONE".