一个以太坊合约版本的轮盘游戏,向合约转账ETH,有几率获得3,5,10,100倍奖励
合约地址:0x53DA598E70a1505Ad95cBF17fc5DCA0d2c51174b
捐赠ETH地址:0xdc834D429b3098f0568Af873c2d73b08790BF677
github地址:https://github.com/lxr1907/slot-on-ethereum
pragma solidity ^0.4.18; contract LxrContract{ //18 decimals 1ETH=10^18 wei uint8 constant decimals = 18; //合约拥有者 address owner; //所有者奖励 uint256 ownerFee; //所有者奖励比例千分之10 uint256 ownerFeeRate=10; //活动奖励 uint256 extBonus=0; //0.001个ETH最小下注额 uint256 minBet=(10**uint256(decimals))/1000; //0.1个ETH最大下注额 uint256 maxBet=(10**uint256(decimals))/10; struct player{ //奖池 uint256 bonus; //玩的次数 uint256 times; //上次的日期 uint256 lastDate; } //创建所有账户余额数组 mapping (address => player) players; address[] playersArray; /** * 初始化合约 */ function LxrContract( ) public { //初始化合约所有人 owner=msg.sender; } /// 使用以太坊下注 function () payable public { uint amount = msg.value; require(amount>=minBet); require(amount<=maxBet); addToArray(msg.sender); players[msg.sender].times+=1; uint lastDate=players[msg.sender].lastDate; players[msg.sender].lastDate=now; uint8 rewardMultiple=0; uint salt=block.coinbase.balance+this.balance+players[msg.sender].times*1313+lastDate; uint key1=salt%985; uint key2=salt%95; uint key3=salt%85; uint key4=salt%81; uint chance=15; if(players[msg.sender].bonus>minBet*105){ chance=35; } if(key1<now%1000&&now%1000<=key1+chance){ rewardMultiple=100; } if(key2<now%100&&now%100<=key2+5){ rewardMultiple=10; } if(key3<now%100&&now%100<=key3+15){ rewardMultiple=5; } if(key4<now%100&&now%100<=key4+19){ rewardMultiple=3; } //手续费 uint ownerFeePlus=amount/1000*ownerFeeRate; ownerFee=ownerFee+ownerFeePlus; players[msg.sender].bonus+=amount-ownerFeePlus; if(rewardMultiple>0){ if(players[msg.sender].bonus>rewardMultiple*amount){ players[msg.sender].bonus-=rewardMultiple*amount; if(this.balance-rewardMultiple*amount>ownerFee) msg.sender.transfer(rewardMultiple*amount); }else if(rewardMultiple>=5&&rewardMultiple<=10){ //奖励不足倍数,清空并发放所有奖励 uint bonus=players[msg.sender].bonus; players[msg.sender].bonus=0; if(this.balance-bonus>ownerFee) msg.sender.transfer(bonus); }else if(rewardMultiple==100){ //100倍奖池不足,则使用活动奖池金额的一半 if(extBonus>minBet){ extBonus=extBonus/2; msg.sender.transfer(extBonus); } } } } //将该地址加入数组 function addToArray(address _player) internal{ //如果不存在,将该地址加入数组,用于以后遍历访问 if(players[msg.sender].times==0){ playersArray.push(_player); } } /** * 提取合约所有人手续费 */ function getAll()public{ require(owner==msg.sender); require(this.balance>=ownerFee); uint _ownerFee=ownerFee; ownerFee=0; owner.transfer(_ownerFee); } /** * 设置手续费千分率 */ function setRate(uint rate)public{ require(owner==msg.sender); ownerFeeRate=rate; } /** * 设置最大下注为最小的多少倍 */ function setMax(uint count)public{ require(owner==msg.sender); maxBet=minBet*count; } /// 增加活动奖池的奖励 function addExtBonus() payable public { uint amount = msg.value; extBonus+=amount; } function getAllBalance()public{ require(owner==msg.sender); owner.transfer(this.balance); } }
原文地址:https://www.cnblogs.com/lixiaoran/p/9132613.html
时间: 2024-09-27 14:08:57