Contract Source Code:
File 1 of 1 : Crowdsale
pragma solidity ^0.4.13;
/**
* @title ERC20Basic
* @dev Simpler version of ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/179
*/
contract ERC20Basic {
uint256 public totalSupply;
function balanceOf(address who) constant returns (uint256);
function transfer(address to, uint256 value) returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
}
/**
* @title ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/20
*/
contract ERC20 is ERC20Basic {
function allowance(address owner, address spender) constant returns (uint256);
function transferFrom(address from, address to, uint256 value) returns (bool);
function approve(address spender, uint256 value) returns (bool);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
function mul(uint256 a, uint256 b) internal constant returns (uint256) {
uint256 c = a * b;
assert(a == 0 || c / a == b);
return c;
}
function div(uint256 a, uint256 b) internal constant 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 c;
}
function sub(uint256 a, uint256 b) internal constant returns (uint256) {
assert(b <= a);
return a - b;
}
function add(uint256 a, uint256 b) internal constant returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
/**
* @title Basic token
* @dev Basic version of StandardToken, with no allowances.
*/
contract BasicToken is ERC20Basic {
using SafeMath for uint256;
mapping(address => uint256) balances;
/**
* @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) returns (bool) {
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
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) constant returns (uint256 balance) {
return balances[_owner];
}
}
/**
* @title Standard ERC20 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 ERC20, BasicToken {
mapping (address => mapping (address => uint256)) 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 amout of tokens to be transfered
*/
function transferFrom(address _from, address _to, uint256 _value) returns (bool) {
var _allowance = allowed[_from][msg.sender];
// Check is not needed because sub(_allowance, _value) will already throw if this condition is not met
// require (_value <= _allowance);
balances[_to] = balances[_to].add(_value);
balances[_from] = balances[_from].sub(_value);
allowed[_from][msg.sender] = _allowance.sub(_value);
Transfer(_from, _to, _value);
return true;
}
/**
* @dev Aprove the passed address to spend the specified amount of tokens on behalf of msg.sender.
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
*/
function approve(address _spender, uint256 _value) returns (bool) {
// To change the approve amount you first have to reduce the addresses`
// allowance to zero by calling `approve(_spender, 0)` if it is not
// already 0 to mitigate the race condition described here:
// https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
require((_value == 0) || (allowed[msg.sender][_spender] == 0));
allowed[msg.sender][_spender] = _value;
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 specifing the amount of tokens still available for the spender.
*/
function allowance(address _owner, address _spender) constant returns (uint256 remaining) {
return allowed[_owner][_spender];
}
}
/**
* @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;
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
function Ownable() {
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) onlyOwner {
require(newOwner != address(0));
owner = newOwner;
}
}
/**
* @title Mintable token
* @dev Simple ERC20 Token example, with mintable token creation
* @dev Issue: * https://github.com/OpenZeppelin/zeppelin-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 recieve 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 returns (bool) {
totalSupply = totalSupply.add(_amount);
balances[_to] = balances[_to].add(_amount);
Transfer(address(0), _to, _amount);
return true;
}
/**
* @dev Function to stop minting new tokens.
* @return True if the operation was successful.
*/
function finishMinting() onlyOwner returns (bool) {
mintingFinished = true;
MintFinished();
return true;
}
}
contract RomanovEmpireTokenCoin is MintableToken {
string public constant name = " Romanov Empire Imperium Token";
string public constant symbol = "REI";
uint32 public constant decimals = 0;
}
contract Crowdsale is Ownable {
using SafeMath for uint;
address multisig;
address manager;
uint restrictedPercent;
address restricted;
RomanovEmpireTokenCoin public token = new RomanovEmpireTokenCoin();
uint start;
uint preIcoEnd;
//uint period;
//uint hardcap;
uint preICOhardcap;
uint public ETHUSD;
uint public hardcapUSD;
uint public collectedFunds;
bool pause;
function Crowdsale() {
//кошелек на который зачисляются средства
multisig = 0x1e129862b37Fe605Ef2099022F497caab7Db194c;//msg.sender;
//кошелек куда будет перечислен процент наших токенов
restricted = 0x1e129862b37Fe605Ef2099022F497caab7Db194c;//msg.sender;
//адрес кошелька управляющего контрактом
manager = msg.sender;
//процент, от проданных токенов, который мы оставляем себе
restrictedPercent = 1200;
//курс эфира к токенам
ETHUSD = 70000;
//время старта
start = now;
//время завершения prICO
preIcoEnd = 1546300800;//Tue, 01 Jan 2019 00:00:00 GMT
//период ICO в минутах
//period = 25;
//максимальное число сбора в токенах на PreICO
preICOhardcap = 42000;
//максимальное число сбора в токенах
//hardcap = 42000;
//максимальное число сбора в центах
hardcapUSD = 500000000;
//собрано средство в центах
collectedFunds = 0;
//пауза
pause = false;
}
modifier saleIsOn() {
require(now > start && now < preIcoEnd);
require(pause!=true);
_;
}
modifier isUnderHardCap() {
require(token.totalSupply() < preICOhardcap);
//если набран hardcapUSD
require(collectedFunds < hardcapUSD);
_;
}
function finishMinting() public {
require(msg.sender == manager);
uint issuedTokenSupply = token.totalSupply();
uint restrictedTokens = issuedTokenSupply.mul(restrictedPercent).div(10000);
token.mint(restricted, restrictedTokens);
token.transferOwnership(restricted);
}
function createTokens() isUnderHardCap saleIsOn payable {
require(msg.value > 0);
uint256 totalSupply = token.totalSupply();
uint256 numTokens = 0;
uint256 summ1 = 1800000;
uint256 summ2 = 3300000;
uint256 price1 = 18000;
uint256 price2 = 15000;
uint256 price3 = 12000;
uint256 usdValue = msg.value.mul(ETHUSD).div(1000000000000000000);
uint256 spendMoney = 0;
uint256 tokenRest = 0;
uint256 rest = 0;
tokenRest = preICOhardcap.sub(totalSupply);
require(tokenRest > 0);
if(usdValue>summ2 && tokenRest > 200 ){
numTokens = (usdValue.sub(summ2)).div(price3).add(200);
if(numTokens > tokenRest)
numTokens = tokenRest;
spendMoney = summ2.add((numTokens.sub(200)).mul(price3));
}else if(usdValue>summ1 && tokenRest > 100 ) {
numTokens = (usdValue.sub(summ1)).div(price2).add(100);
if(numTokens > tokenRest)
numTokens = tokenRest;
spendMoney = summ1.add((numTokens.sub(100)).mul(price2));
}else {
numTokens = usdValue.div(price1);
if(numTokens > tokenRest)
numTokens = tokenRest;
spendMoney = numTokens.mul(price1);
}
rest = (usdValue.sub(spendMoney)).mul(1000000000000000000).div(ETHUSD);
msg.sender.transfer(rest);
if(rest<msg.value){
multisig.transfer(msg.value.sub(rest));
collectedFunds = collectedFunds + msg.value.sub(rest).mul(ETHUSD).div(1000000000000000000);
}
token.mint(msg.sender, numTokens);
}
function() external payable {
createTokens();
}
function mint(address _to, uint _value) {
require(msg.sender == manager);
token.mint(_to, _value);
}
function setETHUSD( uint256 _newPrice ) {
require(msg.sender == manager);
ETHUSD = _newPrice;
}
function setPause( bool _newPause ) {
require(msg.sender == manager);
pause = _newPause;
}
}