Allow roller bed IVs to have transfer rates adjusted the same way as IV stands

[Sheeplets]

As it is now you set the transfer rate on a roller bed's IV by adjusting your container directly before hanging it. You can use almost anything that houses reagents for these, including bluespace beakers which max out at a 300u per second transfer. It should go without saying that this lets you do some seriously game-y things like instantly pushing a pre-measured beaker of medications in a single second. Or an entire bag of blood in about seven seconds since their upper limit is 30u/s. If they functioned identically to regular stands it'd (probably) circumvent this jank.

Edited March 1, 2021 by UncleJo

[Sparky_hotdog]

I can see the problem with the current system: As is, I tend to OOCly cap what I set the transfer rate for roller IVs to 10u, simply to avoid the potential "game-y" thing. However, I can see an issue with allowing the exact same transfer rates as a full IV. Currently, medicines with more precise transfer rates (0.2 Alkysine for example) can only be done with IV stands, which maintains their use while allowing the roller to be used for things like blood which don't require the same level of precision. My worry would be that by allowing roller IVs to have the same range would make IV stands redundant for 75% of cases, with their only use left being for having multiple drips set up at once. A way around that might be to make the roller IVs have a less precise, but slightly larger range; Something like 2u-10u maybe?

[Carver]

Seems like a sound idea given how broken the current implementation could be for insta-murdering someone with the right mix, as well.