Detecting how many units are loaded in a transport

[purparisien]

Hello,
I would like to do a trigger that would calculate how many units are transported in transports. In other words, I want to create a new war3 ressource in my map that would calculate every 10 seconds how many workers are in a certain building, in order to simulate an income. Is it possible ?

 

[Uncle]

I attached a map with an example of how you can do this.

It's very simple.
I use a Unit Indexer to keep track of an Integer (array) called LoadCount.
Then I set each Transport Unit's LoadCount value to how many units are loaded inside of it.
In order to do this I need to detect when a Unit is Loaded/Unloaded from a Transport Unit and increase/decrease LoadCount accordingly.
Finally, I run a periodic timer every 10 seconds that adds Income to each Player based on the sum of their LoadCount values.

Here are the triggers:

Spoiler: Triggers

This trigger runs when a unit enters a transport. This increases the Transport's LoadCount by 1.

• Load
  • Events
    • Unit - A unit Is loaded into a transport
  • Conditions
  • Actions
    • Set CustomValue = (Custom value of (Transporting unit))
    • Set LoadCount[CustomValue] = (LoadCount[CustomValue] + 1)

This trigger runs when a unit leaves a transport. This decreases the Transport's LoadCount by 1.

• Unload
  • Events
    • Unit - A unit Is issued an order targeting an object
  • Conditions
    • (Issued order) Equal to (Order(unload))
    • ((Target unit of issued order) is loaded into (Ordered unit)) Equal to True
  • Actions
    • Set CustomValue = (Custom value of (Ordered unit))
    • Set LoadCount[CustomValue] = (LoadCount[CustomValue] - 1)

Then every 10 seconds we pick through every player's Transport units and find the sum of their LoadCount values, adding Gold equal to this amount.

• Income
  • Events
    • Time - Every 10.00 seconds of game time
  • Conditions
  • Actions
    • Player Group - Pick every player in (All players) and do (Actions)
      • Loop - Actions
        • Set PlayerNumber = (Player number of (Picked player))
        • Set Income = 0
        • Unit Group - Pick every unit in TransportUG[PlayerNumber] and do (Actions)
          • Loop - Actions
            • Set CustomValue = (Custom value of (Picked unit))
            • Set Income = (Income + LoadCount[CustomValue])
        • Player - Add Income to (Picked player) Current gold
        • Game - Display to (Player group((Picked player))) for 5.00 seconds the text: (Income: + (+|cffffff00 + (String(Income))))

The thing is, TransportUG will be empty by default so you will need to add your Transport Units to TransportUG manually like I do below. TransportUG[1] is Player 1's TransportUG. TransportUG[2] would be Player 2's TransportUG.

• Load Setup
  • Events
    • Time - Elapsed game time is 0.00 seconds
  • Conditions
  • Actions
    • Unit Group - Add Orc Burrow 0012 <gen> to TransportUG[1]
    • Unit Group - Add Orc Burrow 0002 <gen> to TransportUG[1]
    • Unit Group - Add Orc Burrow 0010 <gen> to TransportUG[1]

Note that this is just an example. Maybe the player can build their own Transport units with a Worker or train them from a Barracks. If that was the case, then you would have to make a trigger to add those newly built Transport units into the player's TransportUG. Something along the lines of "A unit finishes training/construction -> Add trained/constructed unit to TransportUG[put the player's number here]".

Note: I removed the Stand Down ability from the Orc Burrows in this example. If you want to use that ability then I can easily add it back/make it work with the system.

 

[Pyrogasm]

This system includes a simple way to catch load and unload events without issue: GUI Unit Event v2.5.2.0