5-10-20 Cross
// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © aadilpatel07

//@version=4
strategy("5-10-20 Cross", overlay=true)
src = close, 
len1 = input(5, minval=1, title="EMA 1")
len2 = input(10, minval=1, title="EMA 2")
len3 = input(20, minval=1, title="EMA 3")

mult = input(type=input.float, defval=2)
len = input(type=input.integer, defval=14)
[superTrend, dir] = supertrend(mult, len)

ema1 = ema(src, len1)
ema2 = ema(src, len2)
ema3 = ema(src, len3)

//EMA Color
col1 = color.lime
col2 = color.blue
col3 = color.red

//EMA Plots
plot(series=ema1,color=col1, title="EMA1")
plot(series=ema2,color=col2, title="EMA2")
plot(series=ema3,color=col3, title="EMA3")

//plot SuperTrend
colResistance = dir == 1 and dir == dir[1] ? color.new(color.red, 100) : color.new(color.green, 100)
colSupport = dir == -1 and dir == dir[1] ? color.new(color.green, 0) : color.new(color.green, 10)
plot(superTrend, color = colResistance, linewidth=1)
plot(superTrend, color = colSupport, linewidth=1)

//longCondition = crossover(ema1, ema2) and crossover(ema1,ema3) and crossover(ema2,ema3)
longCondition = ema1 > ema2 and ema1 > ema3 and ema2 > ema3 and ema2 < ema1 and dir == -1
if (longCondition)
    strategy.entry("My Long Entry Id", strategy.long)

//shortCondition = crossover(ema2, ema1) and crossover(ema3,ema1) and crossover(ema3,ema2)
shortCondition = ema1 < ema2 and ema1 < ema3 and ema2 < ema3 and ema2 > ema1 and dir == 1
if (shortCondition)
    strategy.entry("My Short Entry Id", strategy.short)