Code:
#include <iostream.h>
#include <stdlib.h>
#include <ctype.h>
//REGULAR PROTOTYPES
int getxcoord(void);
int getycoord(void);
void showboard(int matrix[8][8]);
char convert(int number);
//Checker Piece Class for Inheritance
class checkerpiece
{
protected:
int x;
int y;
bool king;
bool selected;
public:
int givexposition(void);
int giveyposition(void);
void select(void);
void unselect(void);
bool whetherselected(void);
//bool alljump(void); <- Implement This!
checkerpiece(int startx, int starty, bool kingship = 0);
};
int checkerpiece::givexposition(void)
{
return(x);
}
int checkerpiece::giveyposition(void)
{
return(y);
}
void checkerpiece::select(void)
{
selected = 1;
}
void checkerpiece::unselect(void)
{
selected = 0;
}
bool checkerpiece::whetherselected(void)
{
return(selected);
}
checkerpiece::checkerpiece(int startx, int starty, bool kingship)
{
x = startx;
y = starty;
king = kingship;
}
//White Piece
class wpiece : public checkerpiece
{
public:
bool moveup(int nextx, int nexty, int matrix[8][8]);
bool jumpup(int nextx, int nexty, int matrix[8][8]);
wpiece(int startx = -1, int starty = -1, bool kingship = 0);
};
bool wpiece::jumpup(int nextx, int nexty, int matrix[8][8])
{
if(nextx == x + 2 && nexty == y + 2 && matrix[x+1][y+1] == 2)
{
matrix[x][y] = 0;
matrix[x+1][y+1] = 0;
matrix[x+2][y+2] = 1;
x = x+2;
y = y+2;
cout << "jumped up right" << endl;
return(1);
}
if(nextx == x - 2 && nexty == y + 2 && matrix[x-1][y+1] == 2)
{
matrix[x][y] = 0;
matrix[x-1][y+1] = 0;
matrix[x-2][y+2] = 1;
x = x-2;
y = y+2;
cout << "jumped up left" << endl;
return(1);
}
cout << "No Jump - sorry" << endl;
return(0);
}
bool wpiece::moveup(int nextx, int nexty, int matrix[8][8])
{
if(nextx == x + 1 && nexty == y + 1 && matrix[x][y] == 0)
{
cout << matrix[x-1][y-1] << endl;
matrix[x-1][y-1] = 0;
matrix[x][y] = 1;
cout << matrix[x][y] << endl;
x++;
y++;
cout << matrix[x-1][y-1] << endl;
cout << "moved up right" << endl;
return(1);
}
if(nextx == x - 1 && nexty == y + 1 && matrix[x-2][y] == 0)
{
matrix[x-1][y-1] = 0;
matrix[x-2][y] = 1;
x--;
y++;
cout << "moved up left" << endl;
return(1);
}
cout << "no move - sorry" << endl;
return(0);
}
wpiece::wpiece(int startx, int starty, bool kingship):checkerpiece(startx, starty, king)
{
x = startx;
y = starty;
king = kingship;
}
//CLASS-RELATED PROTOTYPES
void printpieces(wpiece whitepiece[12]);
int findpiece(wpiece whitepiece[12], int x, int y);
////////
//MAIN//
////////
main()
{
int matrix[8][8] = { 1,0,1,0,1,0,1,0,
0,1,0,1,0,1,0,1,
1,0,1,0,1,0,1,0,
0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,
0,2,0,2,0,2,0,2,
2,0,2,0,2,0,2,0,
0,2,0,2,0,2,0,2};
int xposition;
int yposition;
int xposition2;
int yposition2;
int index;
wpiece whitepiece[12] = {wpiece(1,1,0),wpiece(3,1,0),wpiece(5,1,0),wpiece(7,1,0),wpiece(2,2,0),wpiece(4,2,0),wpiece(6,2,0),wpiece(8,2,0),wpiece(1,3,0),wpiece(3,3,0),wpiece(5,3,0),wpiece(7,3,0)};
printpieces(whitepiece);
bool turn = 0;
showboard(matrix);
while(turn == 0)
{
cout << "=-WHITE'S TURN-=" << endl;
cout << "Enter coordinates of piece to move" << endl;
xposition = getxcoord();
yposition = getycoord();
while(findpiece(whitepiece, xposition, yposition) == 12)
{
cout << "No White Piece found - Enter coordinates of piece to move" << endl;
xposition = getxcoord();
yposition = getycoord();
}
index = findpiece(whitepiece, xposition, yposition);
cout << "Where do you want to move it?" << endl;
xposition2 = getxcoord();
yposition2 = getycoord();
cout << xposition2 << ", " << yposition2 << endl;
while(findpiece(whitepiece, xposition2, yposition2) != 12)
{
cout << findpiece(whitepiece, xposition2, yposition2) << endl;
cout << "Already a Piece there - Enter different place to move" << endl;
xposition2 = getxcoord();
yposition2 = getycoord();
}
if(whitepiece[index].jumpup(xposition2, yposition2, matrix) == 0 && whitepiece[index].moveup(xposition2, yposition2, matrix) == 0)
{
cout<< "Not a valid move - Enter different place to move" << endl;
}
showboard(matrix);
}
return (0);
}
//FUNCTIONS
int getxcoord(void)
{
char letter;
int x = 9;
cout << "A - H: ";
while(x == 9)
{
cin >> letter;
letter = toupper(letter);
switch (letter)
{
case 'A': x = 1;
break;
case 'B': x = 2;
break;
case 'C': x = 3;
break;
case 'D': x = 4;
break;
case 'E': x = 5;
break;
case 'F': x = 6;
break;
case 'G': x = 7;
break;
case 'H': x = 8;
break;
default : cout << "Please give a letter from A to H: ";
}
}
return(x);
}
int getycoord(void)
{
int y = 9;
cout << "1 - 8: ";
cin >> y;
while(y < 1 || y > 8)
{
cout << "Please give a number from 1 to 8: ";
cin >> y;
}
return(y);
}
int findpiece(wpiece whitepiece[12], int x, int y)
{
int finder;
for (finder = 0; finder < 12; finder++)
{
if (whitepiece[finder].givexposition() == x && whitepiece[finder].giveyposition() == y)
{
whitepiece[finder].select();
return(finder);
}
}
return(finder);
}
void showboard(int matrix[8][8])
{
int bigcount;
int counter;
cout << "|----|----|----|----|----|----|----|----|" << endl;
for(bigcount = 7; bigcount >= 0; bigcount--)
{
for(counter = 0; counter < 8; counter++)
{
cout << "| " << convert(matrix[bigcount][counter]) << " ";
}
cout << "|" << endl << "|----|----|----|----|----|----|----|----|" << endl;
}
}
char convert(int number)
{
switch(number)
{
case 0 : return(' ');
break;
case 1 : return('w');
break;
case 2 : return('b');
break;
case 3 : return('W');
break;
case 4 : return('B');
break;
default : return('!');
}
}
void printpieces(wpiece whitepiece[12])
{
int count;
for(count = 0; count < 12; count++)
{
cout << "White Piece Index Number " << count << " has coordinates: " << whitepiece[count].givexposition() << ", " << whitepiece[count].giveyposition() << endl;
}
}
Soo, basically, when I select piece "A,3" and tell it to move to "B,4" (which should work), my program says that there is already a piece in "B,4." (A white piece to be exact) I removed most of my debugging lines just so you can read through it easier. This is a desperate SOS! 
