tokenURI.sol

tokenURI.sol

function tokenURI(uint256 _tokenId)
        public
        view
        override
        returns (string memory)
    {
        CharacterAttributes memory charAttributes = nftHolderAttributes[
            _tokenId
        ];

        string memory strHp = Strings.toString(charAttributes.hp);
        string memory strMaxHp = Strings.toString(charAttributes.maxHp);
        string memory strAttackDamage = Strings.toString(
            charAttributes.attackDamage
        );

        string memory json = Base64.encode(
            bytes(
                string(
                    abi.encodePacked(
                        '{"name": "',
                        charAttributes.name,
                        " -- NFT #: ",
                        Strings.toString(_tokenId),
                        '", "description": "This is an NFT that lets people play in the game Metaverse Slayer!", "image": "',
                        charAttributes.imageURI,
                        '", "attributes": [ { "trait_type": "Health Points", "value": ',
                        strHp,
                        ', "max_value":',
                        strMaxHp,
                        '}, { "trait_type": "Attack Damage", "value": ',
                        strAttackDamage,
                        "} ]}"
                    )
                )
            )
        );

        string memory output = string(
            abi.encodePacked("data:application/json;base64,", json)
        );

        return output;
    }