Quick Question - Quick Answer : Can I add to a variable?

[ThePrivateer]

QQ-QA :

I would like a way to increment a variable of the player...but no such function seems to exist.

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(objSetData gPlayerShip "foo" "1")

As we all know, that sets a piece of Data (named foo) in the playership to 1. But that sets the data, no questions asked. I want to add to that number...but no function exists on the Wiki or Xelerus.

I want something like this:

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(objAddToData gPlayerShip "foo" "1")

In which foo would get 1 added to it. How do I do that?

If it helps to think outside the box, what I want is this (for Hell's Trinity):

When the player destroys an Ares Outpost in the Lincoln System, a variable gets added to - I want to use this later in a dockscreen to direct the player to a screen based on how many outposts he has killed.

I cannot use this (taken from Eridani.xml which has a similar thing to what I want)

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(setq centauriStations (sysFindObject gSource "T +centauriWarlords; +populated; -occupation; -uncharted;"))
(setq centauriStationsDestroyed (filter centauriStations theStation (objIsAbandoned theStation)))

I can't use that because it doesn't take into account if the player has destroyed the station -- it assumes that the player has, but in theory an netural or friendly could have destroyed that.

I already have this:

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<Events>
<OnDestroy>
(block Nil
(if (eq(sysGetNode) "Lincoln")
(objSetData gPlayerShip "AresOutpostDestroyedLincoln" "1")
)
)
</OnDestroy>
</Events>

But that will only set the variable once -- I can work with this for now, but a solution that adds to the variable would be appreciated (or something outside the box).

Thanks!

[sdw195]

(objIncData spaceObject string [number])

[ThePrivateer]

(objIncData spaceObject string [number])

That sounds like it will work!

So it would be :

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(objIncData gPlayerShip "AresOutpostLincoln" "1")

Does the number have to be in "" (quotations)?

[sdw195]

nope

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(objIncData gPlayerShip "rins" 100)
Adds 100 rins to the player. 
(objIncData gPlayerShip "rins")

Add 1 rin to the player.

[alterecco]

what sdw195 points to is definitely the right option, but just for clarification you can also do this:

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(objSetData gPlayerShip "somevalue" (add (objGetData gPlayerShip "somevalue") 1))

[ThePrivateer]

@Sdw195 - thanks for clearing that up,

what sdw195 points to is definitely the right option, but just for clarification you can also do this:

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(objSetData gPlayerShip "somevalue" (add (objGetData gPlayerShip "somevalue") 1))

I was going to use that, but I think it failed somewhere...thanks though that could come in handy at some point perhaps.

[See? Quick question, quick answer! ]

[RPC]

You'd also have to do a switch to find out if the player has killed the station. Something like [using pseudocode here]

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(switch
(eq(; the destroyer's UNID) (;the playership's UNID)
     (; increment data)
)