Making a Buy Max Button for My Clicker Game

hueychen

So I'm making https://scratch.mit.edu/projects/778354226/ which is a clicker game and I want to make a buy max button. A buy max button is used to buy the most amount of upgrades without having a negative amount of money. I have found this but I don't really know if I turned this into Scratch code correctly.
These are the equations I know that I need:
b = 0.02;
r = 1.5;
k = Upgrades;
c = money;
n=floor(log(c(r−1)b(rk)+1)/log(r));
cost=b∗rk(rn−1)r−1;
However I'm not sure if I can accurately make the equations code. Any idea of doing this and how to implement it into my game?

mchen2010

I'm sorry, but the math you found is likely incorrect, the /log()/ function is not used to calculate the max amount.
To make a real max button, this code should be used:

(

 (needed_amount)

is a negative number, denoting how much it will take away.)

1. The easy way

repeat until <(coins) < [0]>
change [coins v] by (needed_amount) //subtract the correct amount of coins for purchase
change [purchased v] by (1) //change amount of purchaed items
end
change [coins v] by ((-1) * (needed_amount)) //the loop will overdo it
change [purchased v] by (-1)

2. The math way

set [coins v] to ((coins) mod ((-1) * (needed_amount)))  //the ()mod() function calculates the remainder of a division, e.g. (5)mod(2) = 1.
set [purchased v] to ([floor v] of ((coins) / ((-1) * (needed_amount)))) //This calculates the amount of times you can have needed amount, and makes it a whole number

both work.

Last edited by mchen2010 (Dec. 29, 2022 06:14:06)

hueychen

Where's the cost variable?

mchen2010

The needed_amount varable is the cost varable. It needs to be a negative number.

hueychen

Can you show this in a project?

mchen2010

I *don't* really want to make a project right now… You should be able to smoothly integrate it into your program, I think.

wait - Does the price of the item increase every buy? My calculations only account for a linear growth, not a exponential.

SavetheAtlantic

([floor v] of (([log v] of ((((c ::grey) * ((r ::grey) - (1))) * ((b ::grey) * ((r ::grey) * (k ::grey)))) + (1))) / ([log v] of (r ::grey))))

hueychen

mchen2010 wrote:
I *don't* really want to make a project right now… You should be able to smoothly integrate it into your program, I think.

wait - Does the price of the item increase every buy? My calculations only account for a linear growth, not a exponential.

Yes, it grows exponentially by 1.5 for the cost. Also the value of the click grows exponentially by 1.1.

casp803e

Thanks this was really helpful

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