Item requiement for Galv's Shop Upgrade (fake id concept)

[xSydRowex 4]

I have recently use the shop upgrade and one thing that got me wondering would an item be available to the player if the player has a certain item.

 

The idea I have in mind is some sort of ID system, where a player would need an ID to buy certain items. The reason for the specific is because a character in one of my games in development is using a fake id to buy items like beer and cigarettes for task-related reasons (the main character isn't really a good person anyway or at least not anymore)

 

Is there a way to make that work?

 

Edit: So I actually try it out via regular eventing and it somewhat work did not the way I wanted to.

Want I wanted it to do is when I had the ID, the items would show up as available, otherwise, they would just be grayed out.

Instead, when I got the ID, the items didn't show in the original shop process but it just forces the players into another shop process.

In which to be honest is my fault for the assumption as I don't fully understand the engine yet (far from a newbie but nowhere near an expert.)

 

So my issue still stands but with a more (hopefully) specific detail that is understandable.

Edited November 10 by xSydRowex

[roninator2 111]

You could try Hime Shop Manager. Not sure if the two are compatible. 

disable_good(good_id, hide_formula)

[xSydRowex 4]

On 11/10/2019 at 5:31 PM, roninator2 said:

You could try Hime Shop Manager. Not sure if the two are compatible. 

disable_good(good_id, hide_formula)

So I looked over the script. And It does look like what I'm looking for but I can't anything on how to re-enable the goods. or how to re-enable it when a key item is in inventory.

[roninator2 111]

4 hours ago, xSydRowex said:

re-enable it when a key item is in inventory

That would be the formula part.

 

I'm not the best with that.

you need to do an inventory check

$game_party.item.include?(key_item_id) # probably not going to work

[PhoenixSoul 936]

$game_party.item.include?($data_items[id])

Key Items and Normal Items are both $data_items so, this should do the trick. Of course, this only works if the item exists in inventory, not if the item is equipped (requires extra scripting but it is there-though I only mention it because the whole fake id thing sounds like something I'd treat as individual equipment).

So, whatever the ID of the item is, that's what you use. I'm not familiar with any of the shop modding scripts other than I know they exist, but I would think that the above line of Ruby would work for what you need. Maybe. All I know is that it is worth a shot.

[xSydRowex 4]

 

 

 

 

 

3 hours ago, roninator2 said:

That would be the formula part.

 

 

 

 

 

 

 

 

 

21 minutes ago, PhoenixSoul said:

$game_party.item.include?($data_items[id])

Key Items and Normal Items are both $data_items so, this should do the trick. Of course, this only works if the item exists in inventory, not if the item is equipped.

 

So it would be like this?

 

 

 

 

Spoiler

 

[PhoenixSoul 936]

!$game_party.item.include?($data_items[31])

 

!

 

That tells the interpreter to check if the item is NOT present. If you use that code as is, having the item will disable the goods.

Here's some common syntax to remember (or jot down in notepad):
 

! NOT
&& AND

|| OR
== EQUAL TO
!= NOT EQUAL TO
= EQUALS
+= ADD TO EQUAL
-= SUBTRACT TO EQUAL
* MULTIPLY
/ DIVIDE
% MODULAR DIVISION

[xSydRowex 4]

8 hours ago, PhoenixSoul said:

!$game_party.item.include?($data_items[31])

 

!

 

That tells the interpreter to check if the item is NOT present. If you use that code as is, having the item will disable the goods.

Here's some common syntax to remember (or jot down in notepad):
 

! NOT
&& AND

|| OR
== EQUAL TO
!= NOT EQUAL TO
= EQUALS
+= ADD TO EQUAL
-= SUBTRACT TO EQUAL
* MULTIPLY
/ DIVIDE
% MODULAR DIVISION

 

Oh okay. Thanks for the info.

 

But for either one, I still get this error.

 

 

 

 

Spoiler

 

[PhoenixSoul 936]

I just looked into Game_Interpreter. The solution (I hope) is on line 442.

 

!$game_party.has_item?($data_items[31])

[xSydRowex 4]

Gives me an error saying "can't convert true into string". line 609.

 

Here's the script call I put down:

disable_good(11, !$game_party.has_item?($data_items[31]))

[PhoenixSoul 936]

Double dammit. I'm out of ideas. However, mayhaps @Rikifive, or @Kayzee can be of aid?
They've more experience with RGSS than I do; I'm just a novice who gets lucky on occasion, lolz

[Kayzee 2,971]

I know nothing about the script in question, but maybe it's expecting the condition to be a string to be used with eval? Try quoting the condition like this:

disable_good(11, "!$game_party.has_item?($data_items[31])")

 

Edited November 15 by Kayzee

[Rikifive 3,186]

It's a bit unclear in the script, but you're supposed to put a string, not the code. The string is then evaluated as an expression that returns the result. With that being said, add quotes to the expression (formula, that is). So it should be like this:

disable_good(11, "!$game_party.has_item?($data_items[31])")

 

Edit: Ninja'd, but yup, that's the case.

Edited November 15 by Rikifive

[Kayzee 2,971]

Nin nin nin! Wooosh!

[PhoenixSoul 936]

That's it, yup. These. " "

 

I'm actually surprised at how I missed that, given TsukiHime's Choice Options script works the same way.

lolz @Kayzee

Addendum: Now I actually wonder if item.include? would also work given the issue with string eval being solved...

 

Edited November 15 by PhoenixSoul

[Rikifive 3,186]

Oh and if you'd like to dig into what and why happened;

The error says that the true (which is a result of your expression) cannot be converted into a string, then it points to that line of code:

so in the end it tried to process this: eval(true) which makes the game   *ahem* idk

 

to not search far, if you'll ask Wikipedia what eval is, it will say:

 

 

So that means, that a string should be provided as an argument.

so if you'll add these quotes, it will throw this: eval("your_formula") that then is actually processed.

 

so more or less it's like this:

 

eval(true) => 

eval("expression") => expression => true or false (or  when made typos etc.)

 

[xSydRowex 4]

I tried it out and it now works. Thank you all so much!

[roninator2 111]

2 hours ago, PhoenixSoul said:

I actually wonder if item.include? would also work

Maybe. Looking into Game_Party I see it should have been items.include - not item.include

 

I just tested it and yes it does work.

disable_good(1, "!$game_party.items.include?($data_items[8])")

 

[PhoenixSoul 936]

5 hours ago, xSydRowex said:

I tried it out and it now works. Thank you all so much!

 

You're very welcome.
 

3 hours ago, roninator2 said:

I just tested it and yes it does work.

disable_good(1, "!$game_party.items.include?($data_items[8])")

 

I had thought it might.

All is well that ends well...