//+------------------------------------------------------------------+
//|                                                   Robot Danu.mq4 |
//|                      danusaputra © 2012, Ultimate Explorer Corp. |
//|                                        http://www.metaquotes.net |
//+------------------------------------------------------------------+
#property copyright "danusaputra © 2012, Ultimate Explorer Corp."
#property link      "http://www.metaquotes.net"

#define MAGICMA  20050610

input double Lots                = 0.01;
input int LotRatio               = 5000;
input int StopLoss               = 0;
input int TakeProfit             = 0;
extern double Risk               = 0.02;
extern double Period1            = 5;
extern double Period2            = 12;
extern double Period3            = 35;
extern string Dev_Step_1         ="5,3";
extern string Dev_Step_2         ="5,3";
extern string Dev_Step_3         ="5,3";
extern int Symbol_1_Kod          =159;
extern int Symbol_2_Kod          =159;
extern int Symbol_3_Kod          =82;
input int PeriodOne              = 13; // The period for the first EMA
input int PeriodTwo              = 50; // The period for the second EMA

//+------------------------------------------------------------------+
//| Calculate open positions                                         |
//+------------------------------------------------------------------+
int CalculateCurrentOrders(string symbol)
  {
   int buys=0,sells=0;
//----
   for(int i=0;i<OrdersTotal();i++)
     {
      if(OrderSelect(i,SELECT_BY_POS,MODE_TRADES)==false) break;
      if(OrderSymbol()==Symbol() && OrderMagicNumber()==MAGICMA)
        {
         if(OrderType()==OP_BUY)  buys++;
         if(OrderType()==OP_SELL) sells++;
        }
     }
//---- return orders volume
   if(buys>0) return(buys);
   else       return(-sells);
  }
//+------------------------------------------------------------------+
//| Calculate optimal lot size                                       |
//+------------------------------------------------------------------+
double LotsOptimized()
  {
   double lot=Lots;
   int    orders=HistoryTotal();     // history orders total
   int    losses=0;                  // number of losses orders without a break
//---- select lot size
 lot = NormalizeDouble (AccountFreeMargin()/LotRatio,2);
if (lot<0.01) lot      = 0.01;
return (lot);
//---- return lot size

  }
//Check for EMA Crossover
int CheckForCross(double input1, double input2)
{
  static int previous_direction = 0;
  static int current_direction  = 0;
 
  // Up Direction = 1
  if(input1 > input2){
    current_direction = 1;
  }
 
  // Down Direction = 2
  if(input1 < input2){
    current_direction = 2;
  }
 
  // Detect a direction change
  if(current_direction != previous_direction){
    previous_direction = current_direction;
    return (previous_direction);
  } else {
    return (0);
  }
}
 

//+------------------------------------------------------------------+
//| Check for open order conditions                                  |
//+------------------------------------------------------------------+
int start()
  {
   double ZZ_1, ZZ_2;
   int    res;



//---- get 3 Level ZZ Semafor
   
   ZZ_1=iCustom(Symbol(),0,"3_Level_ZZ_Semafor",Period1,Period2,Period3,Dev_Step_1,Dev_Step_2,Dev_Step_3,Symbol_1_Kod,Symbol_2_Kod,Symbol_3_Kod,5,3);
   ZZ_2=iCustom(Symbol(),0,"3_Level_ZZ_Semafor",Period1,Period2,Period3,Dev_Step_1,Dev_Step_2,Dev_Step_3,Symbol_1_Kod,Symbol_2_Kod,Symbol_3_Kod,4,3);
   
  // Calculate the SMAs from the iMA indicator in MODE_SMMA using the close price
  double shortEMA, longEMA;
  shortEMA = iMA(NULL, 0, PeriodOne, 0, MODE_EMA, PRICE_CLOSE, 0);
  longEMA = iMA(NULL, 0, PeriodTwo, 0, MODE_EMA, PRICE_CLOSE, 0);
 
  // Check if there has been a cross on this tick from the two SMAs
  int isCrossed = CheckForCross(shortEMA, longEMA);

// TP and SL Calcs
double ShortSL, LongSL, ShortTP, LongTP;
   if (StopLoss > 0){
      ShortSL = Bid+(StopLoss*Point);
      LongSL = Ask-(StopLoss*Point);
       }
     
   if (TakeProfit > 0){
      ShortTP = Bid-(TakeProfit*Point);
      LongTP = Ask+(TakeProfit*Point);
       }
   for(int i=(OrdersTotal()-1);i>=0;i--)        
        if(OrderSelect(i,SELECT_BY_POS,MODE_TRADES)==false){
           Print("ERROR - Unable to select the order - ",GetLastError());
           break;
           } 
        if(ZZ_1 < ZZ_2 && OrderType()==OP_SELL){
           OrderClose(OrderTicket(), OrderLots(), Ask, 3, NULL);
           }
        if(ZZ_1 > ZZ_2 && OrderType()==OP_BUY){
           OrderClose(OrderTicket(), OrderLots(), Ask, 3, NULL);
           }    
       
       
 
//---- sell conditions   
   if(ZZ_1 > ZZ_2 && isCrossed == 2 && OrdersTotal() < 1)  
     {
      res=OrderSend(Symbol(),OP_SELL,LotsOptimized(),Bid,3,ShortSL, ShortTP,"Robot Danu",MAGICMA,0,Red);
      return(0);
     }
     
//---- buy conditions
   if(ZZ_1 < ZZ_2 && isCrossed == 1 && OrdersTotal() < 1)  
      {
     
      res=OrderSend(Symbol(),OP_BUY,LotsOptimized(),Ask,3, LongSL, LongTP,"Robot Danu",MAGICMA,0,Blue);   
     return(0);
     }
return(0);
  }