Factorio Forums

Posted: **Fri Dec 22, 2017 12:46 pm**

I am trying to insert a fluid in an empty fluidbox of an entity, but it's not working like I think...
For example if I want to fill the storage tank with 1000 water when it gets placed, I would do the following:

Code: Select all

function fill_storagetank(tank)
  tank.fluidbox[1] = {type="water", amount=1000}
end

--function is called on_built_entity, that part works
script.on_event(defines.events.on_built_entity, function(event)
 if event.created_entity.name == "storage-tank" then
    fill_storagetank(event.created_entity)	
  end
end)

However that is not working, it throws the error: bad argument #-1 to '__newindex' (string expected, got nil)
I am thinking that probably the fluidbox doesn't exist, because the tank is empty. Is that possible? But how do I create it?
If anyone could point me in the right direction here, I would appreciate it...

Posted: **Fri Dec 22, 2017 1:24 pm**

You have to instanciate the fluidbox to change it's properties as described in the api
http://lua-api.factorio.com/latest/LuaFluidBox.html

Code: Select all

function fill_storagetank(tank)
  fluid =  tank.fluidbox[1]
  fluid.type= "water"
  fluid.amount = 1000
  tank.fluidbox[1] = fluid
end

Also note that with 0.16 type was changed to name.

Posted: **Fri Dec 22, 2017 2:27 pm**

Optera wrote:Also note that with 0.16 type was changed to name.

Thank you, that was the cause of this - I am testing with version 0.16.7.
Now it works:

Code: Select all

function fill_storagetank(tank)
  tank.fluidbox[1] = {name="water", amount=1000}
end

The instanciation you mentioned is not even necessary, I suppose you just need to do that if you want to modify an existing fluid.

Factorio Forums

How to insert fluid in an entity's fluidbox

How to insert fluid in an entity's fluidbox

Re: How to insert fluid in an entity's fluidbox

Re: How to insert fluid in an entity's fluidbox