ALR Trade Manager

The EA will be a trade manager. It won't open positions by itself,
but only manage trades which are opened manually or by another EA.

If a long position is opened the EA sets Stop Loss and Take Profit marks
according to the input parameters (pip-distance from entry price).

BUT these levels are no real SL or TP orders, but only price levels
which require further actions when hit.

If TP is hit, the trade will be closed normally.
If SL is hit, the ALR (automatic loss recovery) algorithm starts.

ALR

example input parameters:
SL: 500
TP: 1500
FixedProfit: 100
MaxTurns: 10

The first trade is opened manually or by another EA. For example 1 Lot long at 1,29500
SL level is  1,29000, TP level is 1,31000.
If SL is hit, the orignal position remains OPEN, but the EA opens an additional position, for example 1.4 Lot short at 1,29000. SL of the 2nd trade is 1,29500, TP of the 2nd trade is 1,27500.

If then TP of the 2nd trade (1,27500) is hit, all positions are closed immediately.
That would be 1 Lot with a loss of 2000pips and 1,4 Lot with a profit of 1500pips --> 100 Pips profit.

BUT: If SL of the 2nd trade is hit, another position is opened, for example 0,93 Lot long at 1,29500.
SL of the 3rd position would be 1,29000 and TP of the 3rd positon would be 1,31000.

If then TP (1,31000) is hit, all positions are closed immediately at 1,31000.
But, if 1,29000 is hit, the game starts all over again.

For better understanding, look at the picture.

The EA should calculate the Lot Size of the next trade which is necessary to
get a certain amount of pips profit. This amount is an input parameter
(can also be zero if you just want the get out of a trade break even).

After 10 turns (also an input parameter) no more new positions should be opened.
But if either TP or SL is then hit all position should be closed immediately.

That's how calculations look like: