Thanks for taking a look to parallax ! What extacly means dynamic building and autogenerator ? Also, if you make an update, it would be interresting to be able to displace grass in a more classical way. For exemple a special "grass" block who can be filled to any block, the same as trees. Your way is still interresting, don't delete it ! Having the two options could give more control for placing grass. Other think : Be able to change the texture of a block instead of having to dig, then to build with a new block with another texture.