Display chance of random drops in stats or on tooltip about cookiemonster HOT 4 CLOSED

Hmm indeed this might be hard. Are you saying to show what is the chance to get something which changes to be lower as more of it has been already unlocked?

from cookiemonster.

Yeah, all of that stuff. It should say the chances for getting for instance a common Easter egg from both wrinklers and golden/wrath cookies and it has to calculate everything changing the chances, i.e. you've already unlocked some of the eggs, you've got upgrades or achievements increasing chances for random drops etc.

from cookiemonster.

The calculations really are not that hard. Christmas and halloween cookies work exactly the same, only easter eggs are a bit harder.

You take the base fail rate and multiply with a bunch of multipliers based on unlocks (can easily be found in the source; lookup "halloween cookie drops" and "seasonPopup.spawn"). Then take pSucces = 1 - failrate. After that the chance to unlock a new cookie is pSuccess * (1 - have/total).

As for easter eggs the calculations are as follows (for failRate calculations lookup "DropEgg" in the source):
Chance of normal drop first chance:
pNormal1 = pSuccess * 0.9 * (1 - nHaveNormalEggs/nNormalEggs)

Chance of rare drop first chance:
pRare1 = pSuccess * 0.1 * (1 - nHaveRareEggs/nRareEggs)

Chance to get redrop
pRedropNormal = pSuccess * 0.9 * (nHaveNormalEggs/nNormalEggs)
pRedropRare = pSuccess * 0.1 * (nHaveRareEggs/nRareEggs)
pRedrop = pRedropNormal + pRedropRare

Change of normal drop 2nd chance
pNormal2 = pRedrop * 0.9 * (1 - nHaveNormalEggs/nNormalEggs)

Change of rare drop 2nd chance
pRare2 = pRedrop * 0.1 * (1 - nHaveRareEggs/nRareEggs)

Chance of normal drop:
pNormal = pNormal1 + pNormal2

Chance of rare drop:
pRare = pRare1 + pRare2

I could probably make a branch and do a pull request.

from cookiemonster.

I'll get my head around this in a bit, too early in the morning =p

from cookiemonster.