This is a very crude 8x8 pixel 2d version of minecraft that I made.


Directions:

The blinking set of lamps are your character, and the solid lamps are blocks.

Known Bug: don't try to place a block off screen or the charter will disappear.

Left, right, and down work how you expect them to, and you can not move into a space where there is a block

there is a sudeo-gravity programmed in, so jump moves you up one space up and you stay there, but you can not jump again when you are in midair.

You can move right or left 1 space off a block without falling (think of it like shift walking to make a bridge) but if you move again, you move and then fall (the fall takes some time to process).

The Other game mode just turns gravity off so you can fly, kind of like "creative" mode and is activated with the lever on the wall to the left.

To place or remove a block flip on the lever next to the movement buttons. You character may disappear for a second or quickly flash to a different space and back. That is normal. Use the movement buttons to break or place the blocks that are in the spaces next to you.

If you spawn into the world and there is no player/ it isn't flashing go to the left of the machine and find the button with a sign under it that says something like "start player flasher clock thing"


How it works: it has 64 bits of t flip flop memory that has 2 ways of reading from it. 1 way reads directly into each pixel of the display. The other way reads into the shift registers and is based of your players position . For instance if your y position is 2, the memory is reading all the blocks that fall on the line y=2 to the x position shift register. If the shift register detects there is a block next to the player, it will not let the player move to that spot. The same process happens for the y shift register.

When placing and breaking blocks the shift register stores the players position in its own memory, and switches its output to the memory write bus which just uses x,y to write to a single memory cell.