How do I trigger a rising water level?

[Teelo]

I remember one of the undead dungeon levels on the campaign, they had a "trap" that involved flooding an area, killing all units and buildings in it.
How would they have done this?

 

[D4RK_G4ND4LF]

there is a rising water doodad
Doodads\Cinematic\RisingWaterDoodad\RisingWaterDoodad
(Doodad Palette\Icecrown Glacier\Cinematic\Rising Water or Rising Water Wide)
you could also use this water plane model http://www.wc3c.net/showthread.php?t=82133
give it to a unit and raise it using "Animation - Change (unit) flying height to NewHeight at Speed"

if you want it to be exactly like in the campaign just open the campaign map and see for yourself

 

[Berb]

Funny you should ask, I was just checking random Frozen Throne campaign maps the other day. The file attached is the map you're referring to, with the rising water levels.

 

[Teelo]

Ahh a doodad. Okay there goes my idea of a map with constantly rising water levels

 

[Berb]

You could try scaling the doodad for amplified effects.

If you take a look at the campaign map, they just use TriggerSleepAction() to create a lapse in time between the triggered deaths of the towers. The doodad doesn't actually change the pathing or anything like that.