The pipe can be connected from the interaction menu now, too. Expanded the disconnection logic, because more problems arise when the pipe can still be connected to other structures - it would be sufficient to remove the line, but that could be annoying:
- if the pipe is connected to a container, then you can disconnect the pipe from that liquid tank and it will still be connected to the pump
- if you disconnect the pipe from the pump, then it will disconnect from the liquid tank as well
Maybe this is confusing to the user, we can still kick that out later again.
Now it is possible to connect lines from a pump to the steam engine. This is achieved by the steam engine being a liquid tank. It did not seem good to allow connection from pumps to all liquid containers (i.e. barrels). A liquid tank is also a liquid container, they share the same interface, but it is also a structure.
It is not yet possible to fill the steam engine with any liquid though, because it is not defined what kind of liquid it accepts. This will be oil in the future. Furthermore, the behaviour when the pump adds incompatible liquid is not defined yet.
ExtractMaterial has been changed to be able to slurp in from the most distant horizontal position rather than the closest to the extraction top center.
Also speed up ExtractMaterial for the common case of no required horizontal shifts.
Renamed CreateObject() to CreateObjectAbove() and replaced all occurrences in script files.
Added CreateObject(), the function may need a rewrite though, see comment in code.
Updated documentation
Before this patch, you could destroy materials by pumping them into earth (like you could in CR). This made scenario with acid/lava obstacles rather easy.