Documentation request for PipeConnection.Layers
Posted: Fri Jul 10, 2026 6:53 pm
For my mod P.U.M.P. I wanted to test if the underground segment of a pipe I was planning was traversing lava. And if so, add foundations in that area. Since I'm not actually building anything in those tiles (it's underground, after all), I was trying to get the collision_mask of the tile, and the mask of the underground portion of the fluid_box.
I found: https://lua-api.factorio.com/latest/typ ... ision_mask
Which discribes how to make the prototype.
But - in the Runtime prototype: https://lua-api.factorio.com/latest/con ... ition.html
It's not mentioned.
But - But - when I try to log the pipe connection:
I do find a `Layers` table, which appears to be exactly what I needed:
So I suppose I just want to let you know you have undocumented feature, and might be nice to expand the documentation of it. 
I found: https://lua-api.factorio.com/latest/typ ... ision_mask
Which discribes how to make the prototype.
But - in the Runtime prototype: https://lua-api.factorio.com/latest/con ... ition.html
It's not mentioned.
But - But - when I try to log the pipe connection:
Code: Select all
prototypes.entity["pipe-to-ground"].fluidbox_prototypes[1].pipe_connections[2]Code: Select all
{
connection_category = {
"default"
},
connection_type = "underground",
direction = 8,
flow_direction = "input-output",
hide_connection_info = true,
layers = {
empty_space = true,
lava_tile = true
},
max_underground_distance = 10,
positions = {
{
x = 0,
y = 0
},
{
x = 0,
y = 0
},
{
x = 0,
y = 0
},
{
x = 0,
y = 0
}
}
}