BowTiedDeployer / lootbox-vrf

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Details lootbox

docs

https://gamefi-stacks.gitbook.io/gamefistacks/lootbox-on-chain-m3/general-idea

main points

  • user does one call operation
  • id and block-height+1 are given when lootbox minted
  • can call function open-lootbox starting with block-height+1
  • when open is called, burn the lootbox and mint a new component nft to the user address

flow lootbox

  • admin mint a lootbox to a user address
  • lootbox has block-height of the block it was minted on
  • lootbox has id as an NFT
  • users can check with is-openable if they can open the lootbox
  • after one block from the moment the lootbox was minted, users can open it
  • when lootbox is opnened
    • it concatenates vrf-seed of the minted block with the lootbox id and calculates the keccak256 hash of result
    • takes first byte of the value resulted and if it is between given values it mints that specific component
      • eg. 0 < nr < 51 mint a 'Goldie' background
      • eg. 192 < nr < 231 mint a 'Sunset' background
  • the mint is called in the same function with the burn of the lootbox and has direct control for mint-as-admin on the components smart contract

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