Repository navigation
Codex Getting Started Building Plants
Plants are large machines built from many blocks. Every plant has:
- a controller, the block with the plant's window, which checks the structure;
- walls of the plant's casing or bricks, often with sight glass;
- ports that move items, fluids, gases or heat in and out;
- energy input hatches, tier 1 to 6. No plant demands a certain hatch tier; for more power, add more hatches.
Ports hold nothing themselves. Once the plant is complete, they pass everything on to the controller.
After every change, the controller checks the structure on its next tick. When everything fits, the plant is formed: the controller shows "Formed", the ports connect, and you earn an advancement for that plant. If something is wrong, the controller's window names the problem, for example a wrong block at a position, missing parts or too many ports of one kind. A plant with parts in unloaded chunks pauses until they load again.
Many plants can be built in several sizes. No edge may be longer than perf.maxStructureSize (default 16, allowed 5–32).
The 
Build Projector shows a plant as a hologram before you build it:
- Place the controller.
- Right-click the controller with the projector. The projector's window opens.
- Choose the size, the layer to show and, where the plant allows it, a sight-glass front.
- Build along the ghost blocks. Missing blocks show as see-through copies at full size, blocks in the way get a red see-through box, and a bar at the top of the screen shows how far you are: placed and missing blocks and, in red, the blocks in the way.
The window also lists the material and what you still lack in your inventory. Sneak and right-click to turn the projection off. The projector does not place blocks for you. Only players holding a projector see the hologram, unless the server turns on works.projectorEntities (default false).
Shown size: 5 wide, 5 high, 5 deep (adjustable: Height 4–8).
One example of many: within the rules on this page, size and arrangement are up to you; the Build Projector shows the plan in every allowed size.
| Key | Block | Count | |
|---|---|---|---|
 |
A | Refractory Bricks | 78 |
 |
B | Industrial Sight Glass | 8 |
 |
E | Induction Coil | 4 |
 |
H | Casting Basin | 3 |
 |
F | Energy Input Hatch (Tier 3) | 1 |
 |
G | Gas Input Port | 1 |
 |
C | Item Input Port | 1 |
 |
D | Item Output Port | 1 |
 |
0 | Foundry Controller | 1 |
Casings join into smooth walls together with their glass, ports and controller. Two different casings keep a frame between them.