pragma solidity ^0.4.25; // File: openzeppelin-solidity/contracts/ownership/Ownable.sol /** * @title Ownable * @dev The Ownable contract has an owner address, and provides basic authorization control * functions, this simplifies the implementation of "user permissions". */ contract Ownable { address public owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev The Ownable constructor sets the original `owner` of the contract to the sender * account. */ constructor() public { owner = msg.sender; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(msg.sender == owner); _; } /** * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param newOwner The address to transfer ownership to. */ function transferOwnership(address newOwner) public onlyOwner { require(newOwner != address(0)); emit OwnershipTransferred(owner, newOwner); owner = newOwner; } } // File: openzeppelin-solidity/contracts/math/SafeMath.sol /** * @title SafeMath * @dev Math operations with safety checks that throw on error */ library SafeMath { /** * @dev Multiplies two numbers, throws on overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256 c) { if (a == 0) { return 0; } c = a * b; assert(c / a == b); return c; } /** * @dev Integer division of two numbers, truncating the quotient. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 // uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return a / b; } /** * @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend). */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } /** * @dev Adds two numbers, throws on overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256 c) { c = a + b; assert(c >= a); return c; } } // File: openzeppelin-solidity/contracts/token/TRC20/TRC20Basic.sol /** * @title TRC20Basic * @dev Simpler version of TRC20 interface * @dev see https://github.com/ethereum/EIPs/issues/179 */ contract TRC20Basic { function totalSupply() public view returns (uint256); function balanceOf(address who) public view returns (uint256); function transfer(address to, uint256 value) public returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); } // File: openzeppelin-solidity/contracts/token/TRC20/BasicToken.sol /** * @title Basic token * @dev Basic version of StandardToken, with no allowances. */ contract BasicToken is TRC20Basic { using SafeMath for uint256; mapping(address => uint256) balances; uint256 totalSupply_; /** * @dev total number of tokens in existence */ function totalSupply() public view returns (uint256) { return totalSupply_; } /** * @dev transfer token for a specified address * @param _to The address to transfer to. * @param _value The amount to be transferred. */ function transfer(address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[msg.sender]); balances[msg.sender] = balances[msg.sender].sub(_value); balances[_to] = balances[_to].add(_value); emit Transfer(msg.sender, _to, _value); return true; } /** * @dev Gets the balance of the specified address. * @param _owner The address to query the the balance of. * @return An uint256 representing the amount owned by the passed address. */ function balanceOf(address _owner) public view returns (uint256) { return balances[_owner]; } } // File: openzeppelin-solidity/contracts/token/TRC20/TRC20.sol /** * @title TRC20 interface * @dev see https://github.com/ethereum/EIPs/issues/20 */ contract TRC20 is TRC20Basic { function allowance(address owner, address spender) public view returns (uint256); function transferFrom(address from, address to, uint256 value) public returns (bool); function approve(address spender, uint256 value) public returns (bool); event Approval(address indexed owner, address indexed spender, uint256 value); } // File: openzeppelin-solidity/contracts/token/TRC20/StandardToken.sol /** * @title Standard TRC20 token * * @dev Implementation of the basic standard token. * @dev https://github.com/ethereum/EIPs/issues/20 * @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol */ contract StandardToken is TRC20, BasicToken { mapping(address => mapping(address => uint256)) internal allowed; /** * @dev Transfer tokens from one address to another * @param _from address The address which you want to send tokens from * @param _to address The address which you want to transfer to * @param _value uint256 the amount of tokens to be transferred */ function transferFrom(address _from, address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[_from]); require(_value <= allowed[_from][msg.sender]); balances[_from] = balances[_from].sub(_value); balances[_to] = balances[_to].add(_value); allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value); emit Transfer(_from, _to, _value); return true; } /** * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender. * * Beware that changing an allowance with this method brings the risk that someone may use both the old * and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this * race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * @param _spender The address which will spend the funds. * @param _value The amount of tokens to be spent. */ function approve(address _spender, uint256 _value) public returns (bool) { allowed[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } /** * @dev Function to check the amount of tokens that an owner allowed to a spender. * @param _owner address The address which owns the funds. * @param _spender address The address which will spend the funds. * @return A uint256 specifying the amount of tokens still available for the spender. */ function allowance(address _owner, address _spender) public view returns (uint256) { return allowed[_owner][_spender]; } /** * @dev Increase the amount of tokens that an owner allowed to a spender. * * approve should be called when allowed[_spender] == 0. To increment * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _addedValue The amount of tokens to increase the allowance by. */ function increaseApproval(address _spender, uint _addedValue) public returns (bool) { allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue); emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } /** * @dev Decrease the amount of tokens that an owner allowed to a spender. * * approve should be called when allowed[_spender] == 0. To decrement * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _subtractedValue The amount of tokens to decrease the allowance by. */ function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) { uint oldValue = allowed[msg.sender][_spender]; if (_subtractedValue > oldValue) { allowed[msg.sender][_spender] = 0; } else { allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue); } emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } } // File: openzeppelin-solidity/contracts/token/TRC20/MintableToken.sol /** * @title Mintable token * @dev Simple TRC20 Token example, with mintable token creation * @dev Issue: * https://github.com/OpenZeppelin/openzeppelin-solidity/issues/120 * Based on code by TokenMarketNet: https://github.com/TokenMarketNet/ico/blob/master/contracts/MintableToken.sol */ contract MintableToken is StandardToken, Ownable { event Mint(address indexed to, uint256 amount); event MintFinished(); bool public mintingFinished = false; modifier canMint() { require(!mintingFinished); _; } /** * @dev Function to mint tokens * @param _to The address that will receive the minted tokens. * @param _amount The amount of tokens to mint. * @return A boolean that indicates if the operation was successful. */ function mint(address _to, uint256 _amount) onlyOwner canMint public returns (bool) { totalSupply_ = totalSupply_.add(_amount); balances[_to] = balances[_to].add(_amount); emit Mint(_to, _amount); emit Transfer(address(0), _to, _amount); return true; } /** * @dev Function to stop minting new tokens. * @return True if the operation was successful. */ function finishMinting() onlyOwner canMint public returns (bool) { mintingFinished = true; emit MintFinished(); return true; } } contract Token { function remainingMintableSupply() public view returns (uint256) {} function transferFrom(address from, address to, uint256 value) public returns (bool){} function transfer(address to, uint256 value) public returns (bool){} function balanceOf(address who) public view returns (uint256){} function burn(uint256 _value) public {} function mintedSupply() public returns (uint256) {} } /** * @dev Very simple TRC20 Token that can be minted. * It is meant to be used in a crowdsale contract. */ contract HyperToken is MintableToken { struct Stats { uint256 txs; uint256 minted; bool receivedAirdrop; } // solium-disable-next-line uppercase string public constant name = "Bankroll Token"; string public constant symbol = "BNKR"; // solium-disable-line uppercase uint8 public constant decimals = 6; // solium-disable-line uppercase uint256 private constant targetSupply = 21e6 * 1e6; //21M supply uint256 public totalTxs; uint256 public players; uint256 private mintedSupply_; //Old token address public tokenAddress; Token private token; mapping(address => Stats) private stats; /** * @dev default constructor */ constructor(address _tokenAddress) Ownable() public { //Old token tokenAddress = _tokenAddress; token = Token(tokenAddress); } /** * @dev Swaps the old token for the new one if approval and amount is available (onlyOwner) */ function swap(address _to, uint256 _amount) public { require(_amount > 0); //Transfer requires approval require(token.transferFrom(_to, address(this), _amount)); //Burn whatever is collected; make no assumptions about former tokens calcs token.burn(token.balanceOf(address(this))); //Mint the new token require(mint(_to,_amount)); } /** @dev does a one time airdrop; subject to (onlyOwner) */ function airdrop(address _to, uint256 _amount) public returns (bool) { require(!stats[_to].receivedAirdrop); stats[_to].receivedAirdrop = mint(_to, _amount); return stats[_to].receivedAirdrop; } /** * @dev Function to mint tokens (onlyOwner) * @param _to The address that will receive the minted tokens. * @param _amount The amount of tokens to mint. * @return A boolean that indicates if the operation was successful. */ function mint(address _to, uint256 _amount) public returns (bool) { //Never fail, just don't mint if over if (_amount == 0 || mintedSupply_.add(_amount) > targetSupply) { return false; } //Mint super.mint(_to, _amount); mintedSupply_ = mintedSupply_.add(_amount); if (mintedSupply_ == targetSupply) { mintingFinished = true; } /* Members */ if (stats[_to].txs == 0) { players += 1; } stats[_to].txs += 1; stats[_to].minted += _amount; totalTxs += 1; return true; } /** * @dev Override so that minting cannot be accidentally terminated */ function finishMinting() onlyOwner canMint public returns (bool) { return false; } /** @dev Transfers (using transferFrom) */ function transferFrom(address _from, address _to, uint256 _value) public returns (bool) { super.transferFrom(_from, _to, _value); /* Members */ if (stats[_to].txs == 0) { players += 1; } stats[_to].txs += 1; stats[_from].txs += 1; totalTxs += 1; return true; } /** @dev Transfers */ function transfer(address _to, uint256 _value) public returns (bool) { super.transfer(_to, _value); /* Members */ if (stats[_to].txs == 0) { players += 1; } stats[_to].txs += 1; stats[msg.sender].txs += 1; totalTxs += 1; return true; } /** @dev Returns the supply still available to mint */ function remainingMintableSupply() public view returns (uint256) { return targetSupply.sub(mintedSupply_); } /** * @dev Returns the cap for the token minting. */ function cap() public view returns (uint256) { return targetSupply; } /** * @dev total number of minted tokens */ function mintedSupply() public view returns (uint256) { return mintedSupply_; } /** @dev stats of player, (txs, minted) */ function statsOf(address player) public view returns (uint256, uint256, uint256){ return (balanceOf(player), stats[player].txs, stats[player].minted); } /** @dev check eligibiity for a given player to receive a one time airdrop */ function airdropEligible(address player) public view returns (bool){ return stats[player].receivedAirdrop == false; } ///** @dev Returns the number of tokens minted by the player */ function mintedBy(address player) public view returns (uint256){ return stats[player].minted; } }