Formula for engine BP cost?

[db48x (OP)]

I found an old post that gives a formula for the crew required, but I can't find the formula for the BP cost. Does anyone know it?

[sublight]

It isn't linear.

If memory serves cost is:

Cost = max(5, power_mod < 1.0 ? hs*tech*power_mod^2 : hs*tech*power_mod)

[db48x (OP)]

Hmm. That's not coming out right at all...

[db48x (OP)]

It turns out that you were only out by a factor of two:

Code: [Select]

Cost = max(5, power_mod < 1.0 ? hs*tech*power_mod^2/2 : hs*tech*power_mod/2)
or in spreadsheet terms:

Code: [Select]

=MAX(5, IF(ChosenPowerMod<1, ChosenEngineSize*ChosenPowerPerHS*ChosenPowerMod^2/2, ChosenEngineSize*ChosenPowerPerHS*ChosenPowerMod/2))