I read the tutorial on creating toxic goo for my map and everything works except I don't understand the "mist on top" part. Here are the instructions:
*
Mist on top:

-create an point entity in the middle of your water and set its class name to info_particle_system

-give it the following keyvalues:

Targetname - green_mist_1
start_active - 1
effect_name - water_mist_1024_512
angles - 0 0 0
hammerid - 000002 - random number*

I don't see a "point" entity but I do see a "info_particle_system" object. I assumed (I know, never a good idea) this is the entity I am to add. Under the "info_particle_system" class info I do not see any of the above properties except "Start Active?" which has a yes/no option. There is no Targetname, effect-name, etc. I'm guessing some update changed things since the tutorial was written.

Am I using the "info_particle_system" entity incorrectly here?
If not, what values should I now be entering?
Why would this entity need a targetname? (just curious, seeing how it's not a trigger)

EDIT: Looks like I've answered some of my own questions.

The only values that need to be set now are:
Particle System Name (replaces effect_name) = water_mist_1024_512
Start Active? = YES

I think the 1024_512 would be the area covered by the mist (with the entity being centered). I'll test this out after dinner.

A "point entity" is an entity which has a fixed location, as opposed to a "brush entity" which is tied to a brush.

Be sure you press Apply after you select the info_particle_system entity so that the properties window gets filled in with all of the correct options.

If there still isn't anything there, then you need to turn off Smart Edit and add the values manually. FYI, "targetname" is a little misleading, it gets labled simply as Name when Smart Edit is on.

This information seems to be from before the SDK was released... it needs updating.

That and hammerid is a totally bunk keyvalue, you don't need it at all.

volt wrote:
That and hammerid is a totally bunk keyvalue, you don't need it at all.

Usefull for testing which none of us are interested in probably.

youme wrote:
Usefull for testing which none of us are interested in probably.

How is it used?

No idea to be honest, I just know its for some aspect of debugging