air = { label = "Air"; state = gas; }; biomass = { label = "Biomass"; state = solid; }; dirt = { label = "Dirt"; state = solid; }; ice = { label = "Ice"; state = solid; }; rock = { label = "Rock"; state = solid; }; sand = { label = "Sand"; state = solid; }; water = { label = "Water"; state = liquid; }; wood = { label = "Wood"; state = solid; };