I'm outta ideas

Well i need to know a trigger that when ever you build a specific building, you have to build in the radius of another building.what trigger could i use? i'll use an example
protoss buildings are built near phylons but the nexus is not. thats an example.

i need a trigger that can help me with this.

thank you in advance,

That would be pretty difficult. Im thinking something along the lines of this:

Variables:
CanUBuild - boolean - set to false

Events:
A unit begins construction of a building
Conditions:
(building under construction) is a (type of building that needs to be in the radius)
Actions:
unit group - for every (pylon type unit) on the map
If (building under construction) within range (500) of (picked unit) then
CanUBuild = true
else, end if
if CanUBuild = false then
unit - kill (building under construction)
Game - display to player (owner of (building under construction)) "Must build near a pylon..."
end if

Thats the general layout, you'll have to fix that to the WE. Of course that immidately destroys the building, you probably want to do something else.

Alright i'll try it... i'll get back to you in 15 minutes.

Edit: Actually The condition of that type i cant find....... Could you clear that up for me?

I'm pretty sure its actually a unit comparison comparing the two buildings (buildings count as units)


Edit:
@Anitar- Yeah, thats what I meant.

It's a unit-type comparison.

ty. its greatly appreciated.

but. i have no idea which actions those are :\
so i'l try to find them.

and i'll change the kill" to pause. then i'll try to find a trigger to unpause it

Could some 1 help me this trigger.

a unit is going to use a spell, and one of the buildings in your base will play an animation.

nothing is pre-placed so its prolly all gonna be variables.


and i still dont get that other ones plz you will be geatly appreciated.

Events:
A unit begins construction of a building event - generic unit event
Conditions:
(building under construction) is a (type of building that needs to be in the radius) unit-type comparison
Actions:
unit group - for every (pylon type unit) on the map unit group - pick every unit in region matching conditionand do actions
If (building under construction) within range (500) of (picked unit) then general - if/then/else multiple functions
CanUBuild = true general - set variable
else, end if
if CanUBuild = false then if/then/else + boolean comparison (CanUBuild = boolean variable)
unit - kill (building under construction) unit action
Game - display to player (owner of (building under construction)) "Must build near a pylon..." game - display text (it's the first action under "game")
end if