Only 1 type of block.
What the block does depends on adjacent blocks an their direction.
Change tile direction with arrow keys or WASD.
Click to place, Right click to erase.
M = mine
F = factory (only one recipe in this prototype)
E = Export
Arrow tile = moves items
S,U = currently unused
Colors: Blue=empty, dark blue = in motion, black=backed up.
Light Grey = Iron Ore
Dark Grey = Coal