The Binding of Isaac: Rebirth

The Binding of Isaac: Rebirth

Danizk0 Dec 1, 2022 @ 5:26pm
Tinted Rock chance
Does anybody know what the chance of a tinted rock appearing is? Is it rolled for every individual rock or just once per room and one of the rocks inside is converted into a tinted one if the roll is successful? What about Super Special Rocks? How different are the chances on Normal and Hard mode?
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josh Dec 2, 2022 @ 4:03pm 
IIRC, each tile on the floor in a room is assigned a value. Not sure what the range of this number is (eg. 1 to 100 or whatever else), but the game then rolls a random number for each room generated. If there is a rock that was generated on the tile that matches the random number rolled, then a tinted rock will replace the regular rock in that specific room. So you normally can find one tinted rocked generated per room. Super special rocks probably use an additional roll (again, no clue what it is), and as far as I'm aware Normal and Hard are the same for rock generation mechanics.

How you would find out the chance of a tinted rock, I'm not too sure. You'd have to know how many tiles are in the room, how big the range is that the game rolls for random numbers, and how many rocks are in each room. My non-scientific-and-I'm-only-basing-this-off-of-1200-hours-and-nothing-else guess is, you're probably looking at a range of less than 1 percent for small rooms with few rocks, and 5 to 10 percent to double sized rooms with lots of rocks to have one tinted rock generated.
Last edited by josh; Dec 2, 2022 @ 4:03pm
Danizk0 Dec 2, 2022 @ 4:34pm 
Originally posted by josh:
Not sure what the range of this number is (eg. 1 to 100 or whatever else), but the game then rolls a random number for each room generated. If there is a rock that was generated on the tile that matches the random number rolled, then a tinted rock will replace the regular rock in that specific room.
There's no way that's how it works, that would be the dumbest piece of code ever written. Although it does sound just ridiculous enough to be a mechanic in Flash Isaac.

Also, Repentance's patchnotes stated that Hard mode has a lower chance to spawn tinted rocks than Normal, and you'd have to be pretty unobservant not to spot the difference on your own.
josh Dec 2, 2022 @ 7:59pm 
Originally posted by Danizk0:
Also, Repentance's patchnotes stated that Hard mode has a lower chance to spawn tinted rocks than Normal, and you'd have to be pretty unobservant not to spot the difference on your own.
Looks like you would have been right (2 years ago), but it was changed shortly after Repentance's release.

Tinted rocks are now more common in Hard mode and back to how they were previously in normal mode.

https://steamcommunity.com/games/250900/announcements/detail/3007816130312947507
UwU Dec 2, 2022 @ 8:17pm 
Originally posted by josh:
Originally posted by Danizk0:
Also, Repentance's patchnotes stated that Hard mode has a lower chance to spawn tinted rocks than Normal, and you'd have to be pretty unobservant not to spot the difference on your own.
Looks like you would have been right (2 years ago), but it was changed shortly after Repentance's release.

Tinted rocks are now more common in Hard mode and back to how they were previously in normal mode.

https://steamcommunity.com/games/250900/announcements/detail/3007816130312947507
You're reading it wrong. They're more common now in hard (still less then they were before repentance) and in normal mode they're back to how common they were before (only normal, not hard)
josh Dec 2, 2022 @ 10:46pm 
Oh I see. Thanks for clearing that up. I don't play normal, so really don't have anything to compare it to.

Although, the first repentance patch only notes a reduced chance for hard mode, and the second repentance patch seems to imply that it was changed for both, so idk which is correct.
Last edited by josh; Dec 2, 2022 @ 11:35pm
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Date Posted: Dec 1, 2022 @ 5:26pm
Posts: 5