How to replicate Undead blight

Hi guys, in my map I am going to add a new race called the Naga. The main idea would be to add it something like the Undead blight, but with Water instead of blight. Naga are only able to build on Water and they have a bonus while in it. However I have 2 problems:
- I make absolute no idea on how to make this work
- My map also has the Undead race, so I don't Water and Blight to cause conflicts
- I don't know how I can make the building be built only on top of water (or shallow)

I am open to ideas, I give rep++ for help.

First, use something like naval pathing check to determine whether the build order was issued on water.
If it wasn't, abort the build order and display an error message.

Yes, I know how to do it that way (In fact that is how I planned it at first. Spell like Light Shield and Lauch Seal thought me how to use AbortOrder in quite a nice way). However take a close look on how Undead buildings are done. The action is made even before you place the structure. If you order an aco to build something on grass, per example, the structure appears "red" on that spot. I wonder if it is possible to simulate the same thing, but using water. Also, how do I make my buildings "spawn water" like Undead buildings "spawn blight" ?
Is it an object editor trick? Will it conflict with blight?

Have you even checked the pathing section of the object editor...? If yes, check harder.

base your buildings off the goblin shipyard.

you can't spawn water without making some fucked up stuff on the terrain.

I should expect such an answer from my dear Nemesis. I know what you are talking about Griffen (and Alevice), although it "could" work nicely on water (sea pathable terrain checked) thing is that "water" is not buildable by default. Sure I could change the buildings path to "sea path only" but then it would be a hell for other races (allies) to build near you, because they would simply not be able to.
So my original idea would be to code the whole damn thing. Is it even possible, using a few tricks?

What's your point, allies can't build on blight unless they're undead..

What!? I am almost sure that a Human (per example) is able to build on blight. Thing is after the construction is finished the blight is dispelled. My problem is that, a Human (per example) can not build on top of water and so I have to find a way to fix this =S

In a melee game, human/orc/nightelf can build on any buildable terrain-type while Undead is limited to blight.

If you wanted to duplicate this effect then you would have to make human/orc/nightelf able to build on water.

so, this setting does not work: (Object Editor \ Units)
Pathing - Placement Requires: Sea-pathable
?

EDIT: it works for me, structures that have this setting have to be build on water.

Oh, I see. So, the best thing for you to do is trigger it, yourself. Since you want to build on water- but also allow other races to build on water (which would also be dispelled), then there's no other way of going around it. You would also have to import terrain textures unless you plan on using something that is already existing. But even then, I'm not sure how you're going to make Water look like actual water, when there's no cliff level adjustment that water usually takes. It's just cosmetics to make a water-drenched area look prettier, but still.

You could import iNfranNe's water model to simulate water that doesn't require cliff height adjustment, but the problem to face then is that you wouldn't have actual terrain; it's just for props. And, you want to be able to detect whether or not there is water, too, right? Because buildings built by this race can only be built on your Water.

Then again... Can you detect custom tiles?

If you want to also simulate the Undead's inability to even build beyond blight, you'd probably have to hack the game, or something. The only to do that is to miraculously have the game know that you're new "blight" exists, and then have it registered as real pathing. Yeah... You'd have to hack the game.

Yes I know that. However the only way for me to do that is to change the pathing from "buildable" to "ground pathable". This is a problem, because this way, players can build structures in areas that should be un-buildable, like the lanes where units pass, and therefore they can block the lanes (which is bad).

The problem here is that if I trigger the whole thing, It won't be so perfect. Per example, a player will see the structure "green" in all terrains, and only when he clicks to create the building, the error message appears. It is a valid solution, however it is very choppy.

If by props you mean doodads or something like that, I think I can find a way of doing it. This would be excellent for a triggered choppy solution.

Unfortunately for me, you are correct. However if do so, other people won't be able to play the map ... which will obviously be bad...

Thx for the water model, rep++

You don't play ladder much, do you?

Neither do I, but I know you can build on Blight; all other buildings have a "Blight Dispel Radius" ability.
Or were you talking about the "no building on water"?

Apparently you've never played melee, because he was correct.