Issue Description:

The event onBlockHarvestDrops does not accept WeightedItemStacks in the event.drops list. Since there is no random function, you are unable to set the drop chance for individual drops.

What happens:

event.dropChance applies to all items being dropped, adding a WeightedItemStack to event.drops causes the script to throw an error.

What you expected to happen:

The item chance to be used when getting the item's drop chance, or event.dropChance to apply to the last item added to event.drops.

Script used:

https://pastebin.com/WiHsYSKX -> both items have a 50% chance of being dropped
https://pastebin.com/GE4YXjjx -> script throws error

crafttweaker.log file:

https://pastebin.com/5f02fzg1 -> the error thrown, just cant cast from weighted to normal

Affected Versions (Do not use "latest"):

• Minecraft: 1.12.2
• Forge: forge-14.23.4.2709
• Crafttweaker: 4.1.9
• Using a server: no
• If yes, does the client have the exact same scripts?
  N/A

Your most recent log file where the issue was present:

same as log file

I have the same problem, i cannot set the dropChance for every Drop added. Or give it another trick that we can use?