For questions or bug reports, ping @jona23 on discord.

How to use SPDE (Pipe Property and Direction Editor):

 
Note: you can shift-click on the SDPE element itself in the menu to toggle HUD rendering

Hold LMB to set direction or draw pipes:

Hold Shift + LMB to draw a straight section of pipes. Hint: hold ALT too to snap to 8 directions.


Use the Scroll Wheel whilst SPDE is selected to set mode, then hold CTRL + LMB to apply special operations.

Modes:
0 - Erase direction (removes the previous and next pipe's direction)
1 - Set/Place Color: Red (sets pipe filter to red, or places new pipe)

2 - Set/Place Color: Green (sets pipe filter to green, or places new pipe)

3 - Set/Place Color: Blue (sets pipe filter to blue, or places new pipe)
4 - Set Heat Transfer: True (makes the pipe transfer heat to its sorroundings)
5 - Set Heat Transfer: False (makes the pipe not transfer heat to its sorroundings)

Examples:

Pipe Crossing Example:

Pipe distributor Example: If a pipe has no next direction, it will pick a random pipe to push it's particle to from the 8 neighbouring pipes


Here are the meanings of the zoom window marks:

: Previous pipe's direction

: Next pipe's direction

: Heat transfer pipe

 : Not a single pixel pipe, directions are ignored

: Paused (For PPIP)

: Particle's future path at the mouse position

: Particle's past path, or future path when PPIP is reversed via. INST

: Everything combined

@linfuciuscont (View Post)

 i'll add a function to PPIP to make place already generated pipe