MQL:5分鐘雙均線EA

//+------------------------------------------------------------------+
//|                                                 myEA20180115.mq4 |
//|                                             Copyright 2017,CuiYi |
//|                                                1010333562@qq.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2017,CuiYi"
#property link      "1010333562@qq.com"
#property version   "1.00"
#property strict
#define MAGICMA 19880305

extern double Lots=0.02;

int CalculateCurrentOrder(string symbol)
	{
	int buys=0,sells=0;
	for(int i=0;i<OrdersTotal();i=i+1)
		{
		if(OrderSelect(i,SELECT_BY_POS,MODE_TRADES)==false)	break;
		if(OrderSymbol()=="EURUSD" && OrderMagicNumber()==MAGICMA)
			{
			if(OrderType()==OP_BUY) 	buys++;
			if(OrderType()==OP_SELL)	sells++;
			}
		}
	if(buys>0)	return(buys);
	else		return(-sells);
	}

void CheckForOpen()
	{
	double ma1,ma2,ma3,ma4;
	int res;
	
	ma1=iMA(NULL,5,6,0,MODE_EMA,PRICE_CLOSE,1);
	ma2=iMA(NULL,5,18,0,MODE_EMA,PRICE_CLOSE,1);
	ma3=iMA(NULL,5,6,0,MODE_EMA,PRICE_CLOSE,2);
	ma4=iMA(NULL,5,180,0,MODE_EMA,PRICE_CLOSE,2);
	
	if(ma1>ma2 && ma3<ma4)
		{
		res=OrderSend("EURUSD",OP_BUY,Lots,Ask,3,0,0,"",MAGICMA,0,Blue);
		return;
		}
	
	if(ma1<ma2 && ma3>ma4)
		{
		res=OrderSend("EURUSD",OP_SELL,Lots,Bid,3,0,0,"",MAGICMA,0,Red);
		return;
		}
	}

void CheckForClose()
	{
	double ma1,ma2,ma3,ma4;
		
	ma1=iMA(NULL,5,6,0,MODE_EMA,PRICE_CLOSE,1);
	ma2=iMA(NULL,5,18,0,MODE_EMA,PRICE_CLOSE,1);
	ma3=iMA(NULL,5,6,0,MODE_EMA,PRICE_CLOSE,2);
	ma4=iMA(NULL,5,18,0,MODE_EMA,PRICE_CLOSE,2);
		
	for(int i=0;i<OrdersTotal();i++)
		{
		if(OrderSelect(i,SELECT_BY_POS,MODE_TRADES)==false)	break;
		if(OrderMagicNumber()==MAGICMA || OrderSymbol()=="EURUSD")
			{
			if(OrderType()==OP_BUY)
				{
				if(ma1<ma2 && ma3>ma4)	
					{
					if(!OrderClose(OrderTicket(),Lots,Bid,3,White))
						Print("OrderClose error ",GetLastError());
					}
				break;
				}
			
			if(OrderType()==OP_SELL)
				{
				if(ma1>ma2 && ma3<ma4)
					{
					if(OrderClose(OrderTicket(),Lots,Ask,3,White))
						Print("OrderClose error ",GetLastError());
					}
				break;
				}
			}
		}
	}

void start()
	{
	if(Bars<100 || IsTradeAllowed()==false) return;
	if(CalculateCurrentOrder(Symbol())==0) CheckForOpen();
	else CheckForClose();
	}