Tools and Items ​

c0de comes with a few tools for writing and testing programs, and with items that carry data. This chapter explains what each one does and how to craft it.

Wrench ​

Right-click a trigger block with the wrench to enter the c0de dimension. You arrive in front of the program of that trigger block, or of the first free sheet.

On a sheet, the wrench moves and copies lines you marked with the text marker. Left-click a line that is not marked: the marked lines move in front of it. The gaps close by themselves.

Right-click a line to copy the marked lines in front of it. That line and all lines after it move south. In survival mode, the copied blocks come from your inventory.

Recipe: three iron ingots in a V shape (top left, top right, middle) above a red wool block.

Text marker ​

The text marker looks like a yellow feather. Left-click a line to mark it, left-click it again to remove the mark. Marked lines get a yellow overlay.

Right-click another line of the same sheet to mark everything from your last left-clicked line to this one. If the last left click removed a mark, the right click removes the marks instead.

Each right click is remembered too, so you can grow a selection step by step.

Recipe: a feather and yellow dye, in any shape.

Hammer ​

Left-click a line with the hammer to delete it. If you click a marked area, the whole area is deleted. The lines below move up to close the gap. In survival mode, the blocks go to your inventory.

Right-click a line to insert an empty line in front of it. The clicked line and the lines after it move south.

Clicking the floor of a line works like clicking a block of the line. This is true for the marker, the wrench, the hammer and the pliers.

Recipe: three iron ingots in a row, one iron ingot below the middle and a red wool block below that.

Pliers ​

The pliers change the indentation of your code. Left-click a line to move it one block to the left. Right-click it to move it one block to the right. If the line is part of a marked area, the whole area moves.

Nothing moves if a block would leave the code area. The message tells you which line is in the way. The pliers don't check whether the new indentation is right, but the line numbers show it.

Recipe: shears and a stick, in any shape.

Boots ​

Any boots help you find your way through long programs. Hold them in your main hand and left-click the FUNCTION block at the start of a function. You land next to its END FUNCTION line. Left-click the FUNCTION block behind END to go back to the start.

Right-click any FUNCTION block with boots to go to the PROGRAM line at the top of the sheet.

Debugging tool ​

The debugging tool looks like a fly swatter. Right-click any c0de block with it to see all its properties. For a red line number, it tells you what is wrong.

Hit a debug trigger block with it to start a process with a red debug cursor. The debug cursor starts paused.

• Left-click the paused cursor: it moves one line.
• Shift-left-click the cursor: it runs on its own, or pauses again.
• Right-click any cursor: see its properties and its stack.
• Shift-right-click a PID block: abort the process.

Recipe: a red wool block bottom left, a stick in the middle and a leather top right.

c0de disk ​

The c0de disk looks like an old floppy disk. It carries one program.

To copy a program onto the disk, right-click the PROGRAM block with it. This also works while the program runs.

To build the program of a disk, right-click the floor at the start of an empty sheet (x=5, line 0). In survival mode, the blocks come from your inventory.

Recipe: a data item, an iron ingot and black dye, in any shape.

Disk drive ​

The disk drive looks like an old floppy drive. Put a disk into its slot. Save writes the program of the disk into the folder c0de of your Minecraft, next to saves and screenshots. Load puts a program from that folder onto the disk. This way you keep your programs on your own computer and can share them with friends.

Recipe: iron ingots in the top and bottom rows, and two smooth stone slabs with redstone dust between them in the middle row.

Data item ​

The data item looks like a blank punch card. It is the base for all items that carry data.

Recipe: a paper, white dye and yellow dye, in any shape. You get four data items.

Type items ​

A type item looks like a data item with a red border. It stands for a data type and is used to craft variable and constant items of that type.

Recipe: a data item, red dye and the item of the type, in any shape:

• BOOLEAN: redstone torch
• INTEGER: sand
• FLOAT: red sand
• CHAR: oak plank
• STRING: string
• ARRAY: barrel
• HASH: chest
• STRUCT: scaffolding
• TIME: clock
• ERROR: campfire

Variable items ​

A variable item has a blue border. It carries a name, a type and a value into or out of a process. Hold it and right-click to edit it.

Recipe: a data item, a type item and light blue dye give two variable items of that type.

An uninitialized variable item has no name, type or value. A process writes a result into it. Recipe: a data item and light blue dye.

The trash can button in the dialog empties all fields. Saving with all fields empty makes the item uninitialized again.

Constant items ​

A constant item has a pink border. It works like a variable item, but once it has a value, it can't be changed.

Recipe: a data item, a type item and pink dye give two constant items. A data item and pink dye give an uninitialized constant item.

The NOOP block ​

The NOOP block is the base of almost every language block. It is a clear frame with metal corners.

Recipe: iron ingots in the four corners and sticks in the four edges, with the center empty. You get 64 NOOP blocks.

Eight around one ​

Many blocks are crafted from eight NOOP blocks around one item. You get eight blocks:

• COMMENT: glass
• LITERAL: white wool
• OPERATOR: red wool
• ASSIGN: cyan wool
• TAG: brown wool
• BEGIN: yellow wool
• EXIT: iron door
• PARAMETER: hopper
• RETURN: spruce door

The type base (red carpet) and the structural base (green wool) are made the same way. They are items for crafting other blocks.

NOOP plus one ​

These blocks are crafted from one NOOP block and one item, in any shape:

• LABEL: paper
• PROGRAM: book
• INCLUDE: empty map
• FUNCTION: stone
• CALL: smooth stone
• BREAK: stick

Type blocks ​

Type blocks are red slabs. Each is crafted from a type base and an item, in any shape:

• BOOLEAN: redstone torch
• INTEGER: sand
• FLOAT: red sand
• CHAR: oak plank
• STRING: string
• ARRAY: barrel
• HASH: chest
• STRUCT: scaffolding
• TIME: clock
• ERROR: campfire

VARIABLE is a type base and a bone block. CONSTANT is a type base and three bones.

Structural blocks ​

Conditions and loops are crafted from a structural base and an item, in any shape:

• IF: wheat seeds
• ELSE: wheat
• FOR: dirt
• EACH: cobblestone
• WHILE: diorite
• REPEAT: granite

Swapping blocks ​

Some blocks can be turned into their partner. Put one alone into the crafting grid:

• BEGIN and END
• PARAMETER and RESULT
• VARIABLE and CONSTANT
• IF and ELSE, FOR and EACH, WHILE and REPEAT
• INTEGER and FLOAT, with yellow or orange dye

Trigger blocks ​

All three trigger blocks share one pattern: copper ingots in the corners, glass on the edges and one item in the center.

• trigger block: gold ingot, gives 8
• timer block: clock, gives 8
• debug trigger block: redstone block, gives 1

Guide book ​

If the mod Patchouli is installed, this guide is also a book in the game. You get it once, the first time you join a world with c0de.

To make another copy, craft a book and a PROGRAM block together, in any order.

Handbooks ​

With Patchouli, there are five more red books: handbooks with one page per block, item or function. Each page has a short description, the crafting recipe and an example.

• Data: crafted from a book and a type base
• Statements: a book and a structural base
• Tools: a book and a wrench
• Triggers: a book and a trigger block
• Functions: a book and a FUNCTION block