// chess.cpp

#include "windows.h"
#include "dsdll.h"
#include <string>

using namespace std;

int moveCounter = 0;
string lastMove = "      ";
string enpassantCapture = "  ";							//2 letter square name of enpassant capture
string moves[1000] = { "      " };
string enpassant[48] = {
							"a2a4", "b4a3", "b4a3",
							"b2b4", "a4b3", "c4b3",
							"c2c4", "b4c3", "d4c3",
							"d2d4", "c4d3", "e4d3",
							"e2e4", "d4e3", "f4e3",
							"f2f4", "e4f3", "g4f3",
							"g2g4", "f4g3", "h4g3",
							"h2h4", "g4h3", "g4h3",

                            "a7a5", "b5a6", "b5a6",
							"b7b5", "a5b6", "c5b6",
							"c7c5", "b5c6", "d5c6",
							"d7d5", "c5d6", "e5d6",
							"e7e5", "d5e6", "f5e6",
							"f7f5", "e5f6", "g5f6",
							"g7g5", "f5g6", "h5g6",
							"h7h5", "g5h6", "g5h6" };	//lastmove 
							 







BOOL APIENTRY DllMain( HANDLE, DWORD, LPVOID )
{
   return TRUE;
}

    // Class
    class chess
    {

            FEX static const char* Bar( void )
            {
                return ( "Hello World!\n" );
            }


			FEX	void writeMove( string move )
			{

				moves[moveCounter] = move;
				moveCounter++;

				return;
			}

			FEX string checkEnpassant( string move )
			{

				enpassantCapture = "  ";

				if (moveCounter > 0)							//if this isnt the games first move...
				{
					lastMove = moves[moveCounter - 1];
					for (int i=0; i<48; i+=3 )
					{
						if ( lastMove == enpassant[i] )
						{
							if ( (move == enpassant[i+1]) || (move == enpassant[i+2]) )
							{
								enpassantCapture = lastMove.substr(2,2);
								break;
							} 	
						}
				
					}
				}
				return ( enpassantCapture );
			}  

    };