how do you prevent negative numbers?

laithman

in my game MoneySimulator2018 (heres the link: https://scratch.mit.edu/projects/236279103/) in the shop when you try to get an upgrade but you don't have enough money, it just gives you the upgrade and the cash variable goes into negative numbers and I don't really want that. does anybody have a script to prevent negative numbers?

shoresbeep

if <((cash) - (cost of upgrade)) < [0]> then 
say [not enough cash]
  

else
say [here ya go!]
end

Also, you didn't share the project so I couldn't actually look to see if something else was happening.

Last edited by shoresbeep (July 21, 2018 22:47:38)

deck26

shoresbeep wrote:
if <((cash) - (cost of upgrade)) < [0]> then 
say [not enough cash]
  

else
say [here ya go!]
end
Also, you didn't share the project so I couldn't actually look to see if something else was happening.

Or, potentially simpler to understand and one less operation for Scratch

if <(cash) < (cost of upgrade) > then 
say [not enough cash]

else
say [here ya go!]
end

adsuri

laithman wrote:
in my game MoneySimulator2018 (heres the link: https://scratch.mit.edu/projects/236279103/) in the shop when you try to get an upgrade but you don't have enough money, it just gives you the upgrade and the cash variable goes into negative numbers and I don't really want that. does anybody have a script to prevent negative numbers?

Maybe like this

when this sprite clicked
if <<(cash) = (cost)> or <(cash) > (cost)>> then
upgrade
else
say [not enough cash] for (2) secs
end

Last edited by adsuri (July 27, 2018 14:25:22)

H                                                                                    He
Li   Be                                                     B    C    N    O    F    Ne
Na   Mg                                                     Al   Si   P    S    Cl   Ar
K    Ca   Sc   Ti   V    Cr   Mn   Fe   Co   Ni   Cu   Zn   Ga   Ge   As   Se   Br   Kr
Rb   Sr   Y    Zr   Nb   Mo   Tc   Ru   Rh   Pd   Ag   Cd   In   Sn   Sb   Te   I    Xe
Cs   Ba        Hf   Ta   W    Re   Os   Ir   Pt   Au   Hg   Tl   Pb   Bi   Po   At   Rn
Fr   Ra        Rf   Db   Sg   Bh   Hs   Mt   Ds   Rg   Cn   Nh   Fl   Mc   Lv   Ts   Og

          La   Ce   Pr   Nd   Pm   Sm   Eu   Gd   Tb   Dy   Ho   Er   Tm   Yb   Lu
          Ac   Th   Pa   U    Np   Pu   Am   Cm   Bk   Cf   Es   Fm   Md   No   Lr

ShinigamiBlacky

adsuri wrote:
laithman wrote:
in my game MoneySimulator2018 (heres the link: https://scratch.mit.edu/projects/236279103/) in the shop when you try to get an upgrade but you don't have enough money, it just gives you the upgrade and the cash variable goes into negative numbers and I don't really want that. does anybody have a script to prevent negative numbers?
Maybe like this
when this sprite clicked
if <<(cash) = (cost)> or <(cash) > (cost)>> then
upgrade
else
say [not enough cash] for (2) secs
end

youre too late…
And deck26s solution is shorter

adsuri

ShinigamiBlacky wrote:
adsuri wrote:
laithman wrote:
in my game MoneySimulator2018 (heres the link: https://scratch.mit.edu/projects/236279103/) in the shop when you try to get an upgrade but you don't have enough money, it just gives you the upgrade and the cash variable goes into negative numbers and I don't really want that. does anybody have a script to prevent negative numbers?
Maybe like this
when this sprite clicked
if <<(cash) = (cost)> or <(cash) > (cost)>> then
upgrade
else
say [not enough cash] for (2) secs
end
youre too late…
And deck26s solution is shorter

i was just suggesting

H                                                                                    He
Li   Be                                                     B    C    N    O    F    Ne
Na   Mg                                                     Al   Si   P    S    Cl   Ar
K    Ca   Sc   Ti   V    Cr   Mn   Fe   Co   Ni   Cu   Zn   Ga   Ge   As   Se   Br   Kr
Rb   Sr   Y    Zr   Nb   Mo   Tc   Ru   Rh   Pd   Ag   Cd   In   Sn   Sb   Te   I    Xe
Cs   Ba        Hf   Ta   W    Re   Os   Ir   Pt   Au   Hg   Tl   Pb   Bi   Po   At   Rn
Fr   Ra        Rf   Db   Sg   Bh   Hs   Mt   Ds   Rg   Cn   Nh   Fl   Mc   Lv   Ts   Og

          La   Ce   Pr   Nd   Pm   Sm   Eu   Gd   Tb   Dy   Ho   Er   Tm   Yb   Lu
          Ac   Th   Pa   U    Np   Pu   Am   Cm   Bk   Cf   Es   Fm   Md   No   Lr

laithman

thanks guys for responses! I will try these. I will also make this project public

laithman

https://scratch.mit.edu/projects/236279103/

nividhmehra

when green flag clicked
forever
if <<[cost] < [cash]>> then 

say [here ya go!] for (2) secs
broadcast [buyed ]

else
say [not enough cash] for (2) secs

end
end

try this

Jeph_thegood

Last edited by Jeph_thegood (Jan. 19, 2021 00:38:53)

deck26

Jeph_thegood wrote:

Please don't necropost.

aust120YT

None of these work…

cupcake1502

when this sprite clicked
if <(money) > (cost of upgrade)> then
get upgrade
change [money] by (cost of upgrade)
else
say [Not enough money!] for (2) secs
end

And for a safety measure:

when green flag clicked
forever
if <(money) < [0]> then
set [money] to [0]
end
end

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Nezon

cupcake1502 wrote:

when this sprite clicked
if <(money) > (cost of upgrade)> then
get upgrade
change [money] by (cost of upgrade)
else
say [Not enough money!] for (2) secs
end

And for a safety measure:

when green flag clicked
forever
if <(money) < [0]> then
set [money] to [0]
end
end

Please don't Necropost

This is my signature (it goes automatically under every post I make)! Here is a bit of advice on foruming, by the way. Don't do SAND. SAND means four words.
SAND means Spam, Advertising, Necroposting, and Derailing.
Spam is when a irrelevant message is sent to many places. Wiki Article: Spam
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bob has been hidden again :(

RJBERS

I'm looking for something like this but for Health points do i just copy these but with my variables?

The_Imaginarium

RJBERS wrote:
I'm looking for something like this but for Health points do i just copy these but with my variables?

Please create your own topics instead of posting on other's.

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