League of Extraordinary FoundryVTT Developers•2y ago

How to run code from a specific user

Hi, I have the function foo(bar) and when you run this function it opens a window with some details on is there a way I can make foundry think that the function was run from a specific userId, so the window appears on their screen instead of mine?

15 Replies

EllamOP•2y ago

or some other way to make the window appear on their screen doesn't necessarily have to be some kind of psudo command

Re4XN•2y ago

Client code executes for everyone, I believe. So what you can do is use a gate that checks for that specific user, e.g.

if (!user.isGM()) {
  // do nothing
}

// run code for this user

if (!user.isGM()) {
  // do nothing
}

// run code for this user

EllamOP•2y ago

so the code will be run on a click event, I want the GM to click the button, and the USER to see the window

Re4XN•2y ago

Right, I don't think that changes my suggestion. Imagine you have the following snippet in your code:

const printHello = () => {
  console.log('Hello!')
}

printHello()

const printHello = () => {
  console.log('Hello!')
}

printHello()

If you have 3 logged in users and this function is called, you will see 3 outputs in the console if you open it. The way you would refactor this to only print for a specific user is to add the gate pattern I mentioned above.

EllamOP•2y ago

but the function i'm running renders a handlebars template, and only runs it for the client which runs the code

Ethaks•2y ago

If you want an action that is not tied to some document lifetime cycle executed on every client to trigger something for another client, you'll need sockets: https://foundryvtt.wiki/en/development/api/sockets

Foundry VTT Community Wiki

Sockets

API documentation for the Socket functionality available to packages.

Ethaks•2y ago

With those the GM click can send a message to other clients, and the correct client (as determined by a userId check or via socketlib) can render something on their end.

EllamOP•2y ago

so if i wanted to use a socket to maker user: game.users.get(userId) run the below code:

await game.ptu.utils.dex.render(species, type)

await game.ptu.utils.dex.render(species, type)

it would be

socket.emit('ptu.renderDex', {
  userId: userID,
  species: species,
  type: type
})

socket.emit('ptu.renderDex', {
  userId: userID,
  species: species,
  type: type
})

then elsewhere i'd have

async function handleRenderDex({userId, species, type}) {
  if(!!userId && game.userId !== userId) return

  await game.ptu.utils.dex.render(species, type)
}

socket.on('ptu.renderDex', handleRenderDex);

async function handleRenderDex({userId, species, type}) {
  if(!!userId && game.userId !== userId) return

  await game.ptu.utils.dex.render(species, type)
}

socket.on('ptu.renderDex', handleRenderDex);

that right?

Ethaks•2y ago

Mind the event name, it has to match specific requirements.

EllamOP•2y ago

so the system i'm editing is called ptu so does the event name have to be "system.ptu"?

Ethaks•2y ago

Looks correct

EllamOP•2y ago

what if there is already an event that runs that?

Ethaks•2y ago

The event name is essentially a Foundry determined value. If you want to have different events, you have to move the kind of event into the payload and use a single listener determining which function to run based on that.

EllamOP•2y ago

ok cool got it working thankyou!

4535992•2y ago

or just use https://github.com/mclemente/fvtt-advanced-macros you can speciy for what user run a macro on the macro sheet (it use always sockets ).

Gaming

Programming

How to run code from a specific user

Did you find this page helpful?