Contract 0x2069B76Afe6b734Fb65D1d099E7ec64ee9CC76B2 4

/**
 *Submitted for verification at FtmScan.com on 2021-09-06
*/

// SPDX-License-Identifier: MIT
pragma solidity 0.8.7;

interface rarity {
    function level(uint) external view returns (uint);
    function getApproved(uint) external view returns (address);
    function ownerOf(uint) external view returns (address);
}

contract rarity_gold {
    string public constant name = "Rarity Gold";
    string public constant symbol = "gold";
    uint8 public constant decimals = 18;

    uint public totalSupply = 0;
    
    rarity constant rm = rarity(0xce761D788DF608BD21bdd59d6f4B54b2e27F25Bb);

    mapping(uint => mapping (uint => uint)) public allowance;
    mapping(uint => uint) public balanceOf;
    
    mapping(uint => uint) public claimed;

    event Transfer(uint indexed from, uint indexed to, uint amount);
    event Approval(uint indexed from, uint indexed to, uint amount);

    function wealth_by_level(uint level) public pure returns (uint wealth) {
        for (uint i = 1; i < level; i++) {
            wealth += i * 1000e18;
        }
    }

    function _isApprovedOrOwner(uint _summoner) internal view returns (bool) {
        return rm.getApproved(_summoner) == msg.sender || rm.ownerOf(_summoner) == msg.sender;
    }
    
    
    function claimable(uint summoner) external view returns (uint amount) {
        require(_isApprovedOrOwner(summoner));
        uint _current_level = rm.level(summoner);
        uint _claimed_for = claimed[summoner]+1;
        for (uint i = _claimed_for; i <= _current_level; i++) {
            amount += wealth_by_level(i);
        }
    }
    
    function claim(uint summoner) external {
        require(_isApprovedOrOwner(summoner));
        uint _current_level = rm.level(summoner);
        uint _claimed_for = claimed[summoner]+1;
        for (uint i = _claimed_for; i <= _current_level; i++) {
            _mint(summoner, wealth_by_level(i));
        }
        claimed[summoner] = _current_level;
    }

    function _mint(uint dst, uint amount) internal {
        totalSupply += amount;
        balanceOf[dst] += amount;
        emit Transfer(dst, dst, amount);
    }

    function approve(uint from, uint spender, uint amount) external returns (bool) {
        require(_isApprovedOrOwner(from));
        allowance[from][spender] = amount;

        emit Approval(from, spender, amount);
        return true;
    }

    function transfer(uint from, uint to, uint amount) external returns (bool) {
        require(_isApprovedOrOwner(from));
        _transferTokens(from, to, amount);
        return true;
    }

    function transferFrom(uint executor, uint from, uint to, uint amount) external returns (bool) {
        require(_isApprovedOrOwner(executor));
        uint spender = executor;
        uint spenderAllowance = allowance[from][spender];

        if (spender != from && spenderAllowance != type(uint).max) {
            uint newAllowance = spenderAllowance - amount;
            allowance[from][spender] = newAllowance;

            emit Approval(from, spender, newAllowance);
        }

        _transferTokens(from, to, amount);
        return true;
    }

    function _transferTokens(uint from, uint to, uint amount) internal {
        balanceOf[from] -= amount;
        balanceOf[to] += amount;

        emit Transfer(from, to, amount);
    }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"from","type":"uint256"},{"indexed":true,"internalType":"uint256","name":"to","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"from","type":"uint256"},{"indexed":true,"internalType":"uint256","name":"to","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"from","type":"uint256"},{"internalType":"uint256","name":"spender","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"summoner","type":"uint256"}],"name":"claim","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"summoner","type":"uint256"}],"name":"claimable","outputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"claimed","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"from","type":"uint256"},{"internalType":"uint256","name":"to","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"executor","type":"uint256"},{"internalType":"uint256","name":"from","type":"uint256"},{"internalType":"uint256","name":"to","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"level","type":"uint256"}],"name":"wealth_by_level","outputs":[{"internalType":"uint256","name":"wealth","type":"uint256"}],"stateMutability":"pure","type":"function"}]

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