coding problem

[pefu19]

lets say value 1 base value is 10.
value 2 base value is 20
when value 1 is 10, i want value 2 to be 20
but when value 1 is 0, i want value 2 to be 0 aswell, instead of value 2 being 10 (20-10)
help?

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[Ipquarx]

double value2 = value1 * 2.0;

[pefu19]

double value2 = value1 * 2.0;

noo urgh
you dont get it
i dont want it to be exactly twice
i know how to do that
say value 1 is 4999 and value 2 is 600, how do you go about that?

[Rainzx¹]

Not entirely sure what you are asking for here.

[devildogelite]

When you modify one or the other you have to modify them both. You would also need a ratio for what value 2 should be compared to value 1.

[pefu19]

Not entirely sure what you are asking for here.

i am doing a engine with a gearbox and i have a problem with rpm, when i try to remove gear force rpm from the rpm it makes the rpm go negative
say youre in gear 1 and you go, and you change to gear 2 and when you stop you have negative rpm, i want it to be as many as in gear 1 without the car having idle rpm for 2 seconds after launch
hope this isnt too confusing

[devildogelite]

You need to make a set function that makes value2 = value1. So like when you make a gear change call the set function setting gear 2.

[$trinick]

It's called gear ratios. engineRPM = wheelRPM / gearRatio;