Hello,
(i hope the following stuff is not already known...)
while making experiments with IE-modding i found out how to reconstruct the Water Weird animation, which is used in IWD1 HoW.
The BAM animation files already exist in BG2-engine, but the accessory entry in animate.ids is missing.
To solve this problem start NearInfinity and add the line
0xEF10 IC_WATER_WEIRD
at the bottom of animate.ids. That's all; now you can choose the Water Weird animation in the "animation ID" field of any CRE-File.
OPTIONAL
If you want to add a special soundset to your water weird creature, you can do it the normal way by adding new strings and putting them into the Soundplots of CRE-File.
Another possibility for this:
add the following entry
0xEF10 MWWE CGAMEANIMATIONTYPE_WATER_WEIRD
to the anisnd.ids and then copy one of the sound 2DA files like MDR1.2DA,
name it to MWWE.2DA and change the specific entries.
Now all WaterWeird-creatures use the sounds of MWWE.2DA
greetings
Jarl
PS: Sorry, my English teacher wasn't really satisfied with my interpretation of englisch language