[Minecraft] 基于气泡柱的滴水石锥炮：操作简单，可重复利用

根据 wiki 描述: The amount of damage is 6 for each block of falling distance after 2 blocks (e.g., a stalactite that falls 4 blocks deals 18 damage). The damage is capped at 40, no matter how far the stalactite falls.，滴水石锥下落高度在十格左右伤害就封顶了