Idea by: Vladimir Gribachev.
MQL5 code by: Vladimir Karputov.
Introducing the Coin Flip EA—a unique trading tool that operates without any custom indicators. It opens positions based on a pseudorandom algorithm, making each trade feel like a game of chance!
This EA includes a trailing stop feature that adjusts the Stop Loss for open positions. Should a loss occur, it employs a Martingale strategy to increase the lot size. If you’re wondering how to keep tabs on losses, you can use the OnTradeTransaction function to track when the Stop Loss is triggered:
//+------------------------------------------------------------------+ //| TradeTransaction function | //+------------------------------------------------------------------+ void OnTradeTransaction(const MqlTradeTransaction &trans, const MqlTradeRequest &request, const MqlTradeResult &result) { //--- get transaction type as enumeration value ENUM_TRADE_TRANSACTION_TYPE type=trans.type; //--- if transaction is result of addition of the transaction in history if(type==TRADE_TRANSACTION_DEAL_ADD) { long deal_ticket =0; long deal_order =0; long deal_time =0; long deal_time_msc =0; long deal_type =-1; long deal_entry =-1; long deal_magic =0; long deal_reason =-1; long deal_position_id =0; double deal_volume =0.0; double deal_price =0.0; double deal_commission =0.0; double deal_swap =0.0; double deal_profit =0.0; string deal_symbol =""; string deal_comment =""; string deal_external_id =""; if(HistoryDealSelect(trans.deal)) { deal_ticket =HistoryDealGetInteger(trans.deal,DEAL_TICKET); deal_order =HistoryDealGetInteger(trans.deal,DEAL_ORDER); deal_time =HistoryDealGetInteger(trans.deal,DEAL_TIME); deal_time_msc =HistoryDealGetInteger(trans.deal,DEAL_TIME_MSC); deal_type =HistoryDealGetInteger(trans.deal,DEAL_TYPE); deal_entry =HistoryDealGetInteger(trans.deal,DEAL_ENTRY); deal_magic =HistoryDealGetInteger(trans.deal,DEAL_MAGIC); deal_reason =HistoryDealGetInteger(trans.deal,DEAL_REASON); deal_position_id =HistoryDealGetInteger(trans.deal,DEAL_POSITION_ID); deal_volume =HistoryDealGetDouble(trans.deal,DEAL_VOLUME); deal_price =HistoryDealGetDouble(trans.deal,DEAL_PRICE); deal_commission =HistoryDealGetDouble(trans.deal,DEAL_COMMISSION); deal_swap =HistoryDealGetDouble(trans.deal,DEAL_SWAP); deal_profit =HistoryDealGetDouble(trans.deal,DEAL_PROFIT); deal_symbol =HistoryDealGetString(trans.deal,DEAL_SYMBOL); deal_comment =HistoryDealGetString(trans.deal,DEAL_COMMENT); deal_external_id =HistoryDealGetString(trans.deal,DEAL_EXTERNAL_ID); } else return; if(deal_symbol==m_symbol.Name() && deal_magic==m_magic) if(deal_entry==DEAL_ENTRY_OUT) { PrevBars=0; if(deal_reason==DEAL_REASON_SL && deal_commission+deal_swap+deal_profit<0.0) last_lots_sl=deal_volume; else last_lots_sl=0.0; } } }
Input Parameters
- Stop Loss - Set your Stop Loss level;
- Take Profit - Define your Take Profit target;
- Trailing Stop - Enable trailing stop;
- Trailing Step - Specify the step for the trailing stop;
- Lots - Manually set lot size (if Lots is greater than zero, then Risk should be zero);
- Risk - Automatically calculate lot size (if Risk is greater than zero, then Lots must be zero);
- Martingale - Ratio for increasing lots if a previous position was closed by Stop Loss with a negative profit;
- Max Lots - Set the maximum position size; exceeding this will cause the EA to stop functioning;
- Magic Number - Unique identifier for the EA.
Testing was interrupted when the reference lot exceeded the Max Lots parameter:
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