I was taken by a strange mood at work and now have claimed a Dwarf Fortress workshop, and begun a construction.
WWWO===OWWW
WWW|^^^|WWW
WO=O+++O=OW
W|**++bbb|W
W|**++bbb|W
W|**++bbb|W
W|BBBObbb|W
W|###|###|W
W|TTT|TTT|W
W|###|###|W
W|#+#|#+#|W
W|###|###|W
W|#+#|#+#|W
W|###|###|W
W|BBBObbb|W
W|**++bbb|W
W|**++bbb|W
W|**++bbb|W
WO=O+++O=OW
WWW|+++|WWW
WWW|vvv|WWW
WWWO===OWWW
W : outside walls
O & = & | : walls
^ & v : entrance/exit ramps
+ : floors
* : open space
b : open drawbridge
B : Retracted drawbridge
# : grate
T : pressure plate trigger
another view
WWWO===============OWWW
WWW|bbbb#T#####bbbb|WWW
O==Obbbb#T#+#+#bbbbO==O
|^++bbbb#T#####bbbb++V|
|^+++++O=======O+++++V|
|^+++++B#T#####B+++++V|
O==O***B#T#+#+#B***O==O
WWW|***B#T#####B***|WWW
WWWO===============OWWW
then above the section with the grates: (one of these over each section, with opposite settings)
O===O
|RRR|
|RRR|
|RRR| O=O
|RRR| |*|
|RRR| |p|
|RRR| |P|
|RRR| |M|
O===O O=O
O===O
|rrr|
|rrr|
|rrrO===O
|rrrMMMM|
|rrrO=OPO
|rrr| |p|
|rrr| |*|
O===O O=O
R : Retracting bridge covered in magma
r : open retracting bridge (space full of magma)
Pp : screwpump
M : magma
whew that's alot of ascii.
anyway, each of the triggers is linked to all the bridges.
enemy steps on the trigger on side A and after the bridge delay all this happens
-the A side is closed off by the drawbridges
-the B side's bridges lower to accept more enemies
-the A Z+1 retracting bridge opens and dumps magma on his head
-the A Z+2 retracting bridge closes and starts to refill
-the B Z+1 retracting bridge closes
-the B Z+2 retracting bridge opens and refills the Z+1 level
-magma showers over the now walled off A killzone
-the magma drains through the grates (to a pit where it's pumped back up to Z+2
So, whatcha think? the Z+2 level will be filled by a tower of pumps from the pit (probably at Z-2)
assuming it works:
-big enough for caravans
-always accepts more enemies via the not-in-use side
-foolproof? (the way i see it the worst that can happen is an enemy gets through without being sufficiently magma'd if it's been tripped -alot- in quick succession, since one side starts with 2 loads of magma and when it's triggered, the other side starts filling with a 2nd load), and since everything's linked to every trigger, it shouldn't matter if it's tripped repeatedly
-MAGMA!
question:
when you're picking the 2 mechanisms to link a trigger to a bridge/door/whatever, in which order do you pick them (trigger -> thing it's going to be linked to, or vice versa)
man i'm gonna need alot of bauxite