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@iisaint
Last active January 4, 2019 02:25
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pragma solidity >=0.4.22 <0.6.0;
// THIS CONTRACT CONTAINS A BUG - DO NOT USE
contract EtherDice {
event LOG_RESULT(uint _number, uint _dice, address _winner);
constructor() public payable {
require(msg.value > 0.1 ether);
}
function roll() public view returns(uint) {
return (block.timestamp % 6);
}
function bet(uint _number) public payable returns(bool) {
require(isHuman(msg.sender), "robot is not allowed!!");
require(_number >=0 && _number <=5, "_number is between 0 to 5");
uint _dice = roll();
if (_number == _dice) {
msg.sender.transfer(msg.value*2);
emit LOG_RESULT(_number, _dice, msg.sender);
return true;
}
emit LOG_RESULT(_number, _dice, address(0x0));
return false;
}
function getPool() public view returns(uint) {
return address(this).balance;
}
function isHuman(address addr) internal view returns (bool) {
uint size;
assembly { size := extcodesize(addr) }
return size == 0;
}
}
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