Hmm... at the university I attend, they host a Tekkit server. Tekkit includes ComputerCraft. I need one of these world-eating scripts...
Is the version of CC in Tekkit stable the one where turtles can craft? Because if so, fully-functional grey goo should be possible...
Muaha, Muahahaha, MUAHAHAHAAAAAAAA!
Pity I don't have any Lua experience...
Also, I tried in singleplayer to move turtles with frames (Possible to use them as [Dead reckoning or GPS guided, penetrating, optionally nuclear armed] torpedoes on frameships?) but it crashed. I think this bug is fixed on newer versions of CC though, so non-tekkit players might be able to pull it off. Turtles seem, by cost-to-capabilities ratio, the most powerful war machine in Tekkit. They are cheap, versatile and powerful, thier only drawback (besides general clumsyness) is the blindness they suffer (ccsensors might alliviate this somewhat for turtles slaved to a nearby computer? They look really complicated and buggy though.)
I want my simple locator system darnit! It could be as simple as giving a frameship "entity to north" "entity to south", etc. sensors.
All I need is a block that outputs redstone when a directional airspace (of selectable size?) is comprimised by players/mobs/block updates. Batteries of such and Redpower cables should be able to make a decent radar that will let us direct fire from automated platforms at intruders, rather than having to use fixed triggers on immobile, fixed guns.
I have fond memories of playing on this server! If my university server doesn't have enough of an active community, I might try setting up MultiMC or something for this server again. Do you guys still run Mystcraft? I once figured out a way to use it to call in artillery anywhere you can look from automated batteries in a pocket dimension. Even built a prototype in singleplayer creative mode, but it didn't work because you couldn't load two dimensions then. Lost the world though.
Also, how many TNT do you belive a minecart is worth? Two? Four? I highly doubt any more than that. I recently remade an old railcannon design that I'm pretty sure is a lot cheaper to fire than TNT-propelled models at the cost of one minecart, one TNT per shot regardless of distance dialed in.
It also can be rigged for storage of quite a lot of ammo and a configurable burst-fire count from one to nine if you use a train dispenser. It's pretty compact and simple. I designed the original for frameships as a crew-served weapon, but this one can be fired via redstone pulse and only needs a crew to change burst/distance settings or refill the dispenser.
...I just love being a mad scientist...