[Feature] Doors welded and bolted shut can stop Kudzu growth

[kyle2143]

The idea makes sense, but for 6 or 7 TC i feel like Kudzu already has a hard time makign its way through some airlocks as is. If this was to be implemented I would push for a lower TC cost.

That's an interesting point. I forgot that it does happen that doors can by chance not be opened by Kudzu. Maybe a better option would be to make Kudzu having a (or near)100% chance to open doors. But doing different things to doors lowers the probability of the kudzu breaking through. I realize now that I didn't consider shocking doors to have an effect on kudzu's ability to open them, maybe it could.

For example:
Door - only bolted = 75% chance per kudzu growth cycle that it can open the door
Door - Only welded = 75% chance
Door - Shocked & powered = 50% chance kudzu breaks through
All active = 0% chance that kudzu can open door

Currently (in 2016 at least) Each closed door encountered by Kudzu has a 50% chance to be opened by the Kudzu per growth stage.