This contract is a reference implementation using Baedriks SNIP-721 impl as a framework, optimized for randomly minting SNIP-721s in to buyers using SNIP-20 tokens as payment.
Fields that you will want to edit for your particular launch include:
MINT_COST u128 in contract.rs. It is written in the lowest denomination of your SNIP-20 token of choice. The Address and Hash of the SNIP contract must be included in the init msg.
PreLoad struct in state.rs. It defines the datatypes of the public and private data you will want to store when using the pre_load() function to load the tokens into the contract.
mint() in contract.rs list the components of the public and private metadata as None. Change the components you want to fill with the PreLoad data to read Some(token_data.<INSERT_PRE_LOAD_COMPONENT_NAME>)
New functions to understand:
pre_load() is used to store a Vec<PreLoad> for the token data used when minting. Each PreLoad in the Vec is the data for a single token.
receive() is used when minting. Rather than calling the mint() function itself, users will interact with the SNIP-20 contract which will send tokens to the SNIP-721 contract along with address of the person paying.