黄金多周期顺势回调信号指标

//+------------------------------------------------------------------+

//|                  XAUUSD 日内顺势三件套（MQL4 版）                  |

//+------------------------------------------------------------------+

#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 clrGreen
#property indicator_color2 clrRed

//--- 输入参数

extern int    EMA50Period = 50;           // H1 周期 EMA50（趋势过滤）

extern int    EMA21Period = 21;           // M15 周期 EMA21（回调支撑/阻力）

extern int    RSIPeriod   = 14;           // RSI 周期

extern double RSIOversold = 40.0;         // RSI 做多拐头区（低于此值后向上穿越）

extern double RSIOverbought = 60.0;       // RSI 做空拐头区（高于此值后向下穿越）

extern double PullbackTolerance = 0.001;  // 回调容差（0.1% 允许误差）


//--- 指标缓冲区

double BuyBuffer[];    // 做多箭头

double SellBuffer[];   // 做空箭头


//+------------------------------------------------------------------+

//| 初始化                                                           |

//+------------------------------------------------------------------+

int init()
{
   // 绑定缓冲区

   SetIndexBuffer(0, BuyBuffer);
   SetIndexBuffer(1, SellBuffer);
   
   // 箭头样式

   SetIndexStyle(0, DRAW_ARROW, EMPTY, 2);
   SetIndexArrow(0, 233);  // 向上箭头

   SetIndexEmptyValue(0, EMPTY_VALUE);
   
   SetIndexStyle(1, DRAW_ARROW, EMPTY, 2);
   SetIndexArrow(1, 234);  // 向下箭头

   SetIndexEmptyValue(1, EMPTY_VALUE);
   
   // 标签

   SetIndexLabel(0, "做多信号");
   SetIndexLabel(1, "做空信号");
   
   return(INIT_SUCCEEDED);
}

//+------------------------------------------------------------------+

//| 逐根 K 线计算                                                    |

//+------------------------------------------------------------------+

int OnCalculate(const int rates_total,
                const int prev_calculated,
                const datetime &time[],
                const double &open[],
                const double &high[],
                const double &low[],
                const double &close[],
                const long &tick_volume[],
                const long &volume[],
                const int &spread[])
{
   // 计算起始位置（首次计算全部，之后只算新 K 线）

   int limit;
   if(prev_calculated == 0)
      limit = rates_total - EMA50Period - 3;  // 留出足够历史数据

   else
      limit = rates_total - prev_calculated;
   
   if(limit < 0) return(0);
   
   // 从旧到新遍历（MQL4 数组 0 是最新 K 线，循环必须倒序）

   for(int i = limit; i >= 0; i--)
   {
      // 默认无信号

      BuyBuffer[i] = EMPTY_VALUE;
      SellBuffer[i] = EMPTY_VALUE;
      
      // 确保有足够历史数据（需要访问 i+2）

      if(i + 2 >= rates_total) continue;
      
      // ═══════════════════════════════════

      // 1. 获取 H1 周期 50 EMA（趋势）

      // ═══════════════════════════════════

      double ema50_0 = iMA(NULL, PERIOD_H1, EMA50Period, 0, MODE_EMA, PRICE_CLOSE, i);
      double ema50_1 = iMA(NULL, PERIOD_H1, EMA50Period, 0, MODE_EMA, PRICE_CLOSE, i+1);
      double ema50_2 = iMA(NULL, PERIOD_H1, EMA50Period, 0, MODE_EMA, PRICE_CLOSE, i+2);
      
      if(ema50_0 == 0 || ema50_1 == 0 || ema50_2 == 0) continue;
      
      // ═══════════════════════════════════

      // 2. 获取 M15 周期 21 EMA（回调位）

      // ═══════════════════════════════════

      double ema21_0 = iMA(NULL, PERIOD_M15, EMA21Period, 0, MODE_EMA, PRICE_CLOSE, i);
      double ema21_1 = iMA(NULL, PERIOD_M15, EMA21Period, 0, MODE_EMA, PRICE_CLOSE, i+1);
      
      if(ema21_0 == 0 || ema21_1 == 0) continue;
      
      // ═══════════════════════════════════

      // 3. 获取 RSI（动量确认）

      // ═══════════════════════════════════

      double rsi_0 = iRSI(NULL, 0, RSIPeriod, PRICE_CLOSE, i);
      double rsi_1 = iRSI(NULL, 0, RSIPeriod, PRICE_CLOSE, i+1);
      double rsi_2 = iRSI(NULL, 0, RSIPeriod, PRICE_CLOSE, i+2);
      
      if(rsi_0 == 0 || rsi_1 == 0 || rsi_2 == 0) continue;
      
      // ═══════════════════════════════════

      // 做多条件

      // ═══════════════════════════════════

      // 趋势向上：前一根收盘在 H1-EMA50 上方 且 EMA50 斜率向上

      bool trendUp = (close[i+1] > ema50_1) && (ema50_1 > ema50_2);
      
      // 回调到 M15-EMA21 附近：前一根最低价触及 EMA21（允许 0.1% 误差），收盘价收回上方

      bool pullback = (low[i+1] <= ema21_1 * (1 + PullbackTolerance)) && 
                      (close[i+1] > ema21_1);
      
      // RSI 拐头：前两根在超卖区下方，前一根回到上方且未过热（<55）

      bool rsiLong = (rsi_2 < RSIOversold) && 
                     (rsi_1 >= RSIOversold) && 
                     (rsi_1 < 55);
      
      if(trendUp && pullback && rsiLong)
      {
         BuyBuffer[i] = low[i] - 15 * Point;  // 箭头画在当前 K 线下方

      }
      
      // ═══════════════════════════════════

      // 做空条件

      // ═══════════════════════════════════

      // 趋势向下：前一根收盘在 H1-EMA50 下方 且 EMA50 斜率向下

      bool trendDn = (close[i+1] < ema50_1) && (ema50_1 < ema50_2);
      
      // 回调到 M15-EMA21 附近：前一根最高价触及 EMA21，收盘价收回下方

      bool pullbackShort = (high[i+1] >= ema21_1 * (1 - PullbackTolerance)) && 
                           (close[i+1] < ema21_1);
      
      // RSI 拐头：前两根在超买区上方，前一根回到下方且未过冷（>45）

      bool rsiShort = (rsi_2 > RSIOverbought) && 
                      (rsi_1 <= RSIOverbought) && 
                      (rsi_1 > 45);
      
      if(trendDn && pullbackShort && rsiShort)
      {
         SellBuffer[i] = high[i] + 15 * Point;  // 箭头画在当前 K 线上方

      }
   }
   
   return(rates_total);
}
//+------------------------------------------------------------------+