This is a technical description of the blueprint string format, used to share blueprints with other users.
A blueprint string is a json representation of the blueprint, encoded using base 64 with the version byte in front (0 in vanilla 0.15) and then compressed with zlib deflate. So to get the json representation of a blueprint from a blueprint string, skip the first byte, base64 decode the string, and finally decompress using zlib deflate.
Json representation of a blueprint/blueprint book
The json representation of a blueprint or blueprint book is one large object, named either blueprint or blueprint-book.
Blueprint book object
| Key |
Description
|
| item
|
String, the name of the item that was saved ("blueprint-book" in vanilla)
|
| label
|
String, the name of the blueprint set by the user
|
| blueprints
|
The actual content of the blueprint book, array of objects containing an "index" key and value (starts with 0) and a "blueprint" key with a #Blueprint object as the value
|
| active_index
|
Index of the currently selected blueprint (starts with 0)
|
| version
|
The map version of the map the blueprint was created in (but converted to an uint, not sure how)
|
Blueprint object
| Key |
Description
|
| item
|
String, the name of the item that was saved ("blueprint" in vanilla)
|
| label
|
String, the name of the blueprint set by the user
|
| entities
|
The actual content of the blueprint, array of #Entity objects
|
| icons
|
The icons of the blueprint set by the user, array of #Icon objects
|
| version
|
The map version of the map the blueprint was created in (but converted to an uint, not sure how)
|
Icon object
| Key |
Description
|
| index
|
Index of the icon (starts with 1)
|
| signal
|
Object with a type key/value pair and a name key/value pair.
|
Entity object
| Key |
Description
|
| entity_number
|
Index of the entity (starts with 1)
|
| name
|
Prototype name of the entity (e.g. "offshore-pump")
|
| position
|
Position of the entity within the blueprint. Object with a x key/value pair and a y key/value pair
|
| direction
|
Direction of the entity, uint (optional)
|
| connections
|
Circuit connection, object with keys starting from 1, values are #Connection objects (optional)
|
| control_behaviour
|
|
| items
|
|
| recipe
|
|