Checking if a unit is in the area

[vladane]

I'm doing a creep wave system.
I need to change the creep wave when I improve a building.
I wanted to make a trigger to check if the building (unit) is in a certain area, if it is a level 1 barracks, then certain units come out, if it is already a level 2 barracks, then other units.
Can you advise how to implement this correctly?
I am a beginner, so if the answers will be very detailed and with examples, I will be very grateful.

 

[Chaosium]

If you're upgrading using the standard WC3 way like scout tower > watch tower, you can do this

• Upgrade
  • Events
    • Unit - A unit Finishes an upgrade
  • Conditions
  • Actions
    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
      • If - Conditions
        • (MyRegion <gen> contains (Triggering unit)) Equal to True
      • Then - Actions
        • -------- Do stuff here --------
      • Else - Actions

The condition is a boolean comparison "unit in region"

 

[vladane]

If you're upgrading using the standard WC3 way like scout tower > watch tower, you can do this

• Upgrade
  • Events
    • Unit - A unit Finishes an upgrade
  • Conditions
  • Actions
    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
      • If - Conditions
        • (MyRegion <gen> contains (Triggering unit)) Equal to True
      • Then - Actions
        • -------- Do stuff here --------
      • Else - Actions

The condition is a boolean comparison "unit in region"

I can't find the features I need
Can you send me the file with the trigger, if you don't mind?
It is still difficult for me to navigate and search for the right parameters in triggers

 

[Chaosium]

It was just a temporary map I made, I don't have it any longer, but here are the actions:

The first is an if/then/else

And the condition is here

 

[Pyrogasm]

What's kind of relevant is if this check only needs to happen once per area or per player (or per player per area), and what should happen if the unit dies. In the Do stuff here section you'll probably want to set boolean variable to true, then check the value of that boolean when you create the units:

• -------- Do stuff here --------
• Set UpgradedBarracks = True

• If (All conditions are true) then do (Then actions) else do (Else actions)
  • If - Conditions
    • UpgradedBarracks equal to False
  • Then - Actions
    • -------- do normal stuff --------
  • Else - Actions
    • -------- do upgraded stuff --------