Here's an idea. What if there was a retractable spike block. You could make it by crafting together a dispenser with an arrow.
The block would be completely harmless except when it receives a redstone charge. When powered a spike would pop out of one (and only one) face on the side of the block. When the power is turned off, the spike would withdraw.
Creatures that touch the spike would take continuous damage, just like with cacti. Having spikes you could activate or deactivate with redstone would allow for all kinds of sophisticated mob traps. The spike would also have the property of blocking water, just like ladders and and signs. So you could also use spike blocks as flood gates, to block water when powered.
For example here's a top down view (with the furnace being a spike block).
[>>-i>]
When the current is turned off the spike would withdraw, letting the water out.
What do you think?
P.S. I found other spike suggestions, but they mostly seem to involve floor spikes and don't include a purpose as flood gates.
This is more than just floodgates. It talks about retractable spikes that by the same logic the signs and ladders, can stop the flow of water. I have seen a few threads about retractable spikes and floodgates, but this is the first I have see with it is both. The Wall-Spike Dispenser trap and the Spikes that serve a different purpose than Cactus! are my favorite ones. As for floodgate, I will go with the pistons. It looks like we will be getting that anyway.
The block would be completely harmless except when it receives a redstone charge. When powered a spike would pop out of one (and only one) face on the side of the block. When the power is turned off, the spike would withdraw.
Creatures that touch the spike would take continuous damage, just like with cacti. Having spikes you could activate or deactivate with redstone would allow for all kinds of sophisticated mob traps. The spike would also have the property of blocking water, just like ladders and and signs. So you could also use spike blocks as flood gates, to block water when powered.
For example here's a top down view (with the furnace being a spike block).
When the current is turned off the spike would withdraw, letting the water out.
What do you think?
P.S. I found other spike suggestions, but they mostly seem to involve floor spikes and don't include a purpose as flood gates.
Edit: The pistons mod covers all of this except for damaging mobs, but I'm sure you can crush a mob's head with two pistons.
I have wanted floodgates for a while, but again, pistons act as flood gates.
Woah, that mod is awesome. Yeah, I imagine this working a bit like that but with spikes.
Perhaps you could design both regular pistons and spiked varieties.
This is more than just floodgates. It talks about retractable spikes that by the same logic the signs and ladders, can stop the flow of water. I have seen a few threads about retractable spikes and floodgates, but this is the first I have see with it is both. The Wall-Spike Dispenser trap and the Spikes that serve a different purpose than Cactus! are my favorite ones. As for floodgate, I will go with the pistons. It looks like we will be getting that anyway.
MineCarts Mk. II
Golden Fleece
Wall Clocks
Fireworks