public class Chess {
static final int xmin = 0;
static final int ymin = 0;
static final int xmax = 7;
static final int ymax = 7;
static final int xn = 8;
static final int yn = 8;
static final int north = 0;
static final int east = 1;
static final int south = 2;
static final int west = 3;
static final boolean lives = true;
static final boolean death = false;
static final boolean black = true;
static final boolean white = false;
Chess() {
Board brd = new Board();
brd.printBoard();
}
class Board {
Figure [][] board = new Figure [yn][xn];
Gambler wht;
Gambler blk;
Board () {
int i, j;
for (i = ymin; i <= ymax; i++)
for (j = xmin; j <= xmax; j++)
new Empty (i, j);
this.wht = new Gambler (white);
this.blk = new Gambler (black);
}
void printBoard () {
int i, j;
for (i = ymin; i <= ymax; i++) {
for (j = xmin; j <= xmax; j++)
System.out.print(board[i][j].getfullname() + " ");
System.out.println ();
}
}
class Gambler {
boolean color;
Gambler (boolean color) {
this.color = color;
if (color == white) {
Rook rook1 = new Rook (0, 0, white);
Rook rook2 = new Rook (0, 7, white);
Knight knight1 = new Knight (0, 1, white);
Knight knight2 = new Knight (0, 6, white);
Bishop bishop1 = new Bishop (0, 2, white);
Bishop bishop2 = new Bishop (0, 5, white);
King king = new King (0, 3, white);;
Queen queen = new Queen (0, 4, white);
Pawn pawn1 = new Pawn (1, 0, white);
Pawn pawn2 = new Pawn (1, 1, white);
Pawn pawn3 = new Pawn (1, 2, white);
Pawn pawn4 = new Pawn (1, 3, white);
Pawn pawn5 = new Pawn (1, 4, white);
Pawn pawn6 = new Pawn (1, 5, white);
Pawn pawn7 = new Pawn (1, 6, white);
Pawn pawn8 = new Pawn (1, 7, white);
//Bishop test = new Bishop (2, 2, white);
//System.out.println (test.make_a_move (south, east, 4, 4));
}
else if (color == black) {
Rook rook1 = new Rook (7, 0, black);
Rook rook2 = new Rook (7, 7, black);
Knight knight1 = new Knight (7, 1, black);
Knight knight2 = new Knight (7, 6, black);
Bishop bishop1 = new Bishop (7, 2, black);
Bishop bishop2 = new Bishop (7, 5, black);
King king = new King (7, 3, black);;
Queen queen = new Queen (7, 4, black);
Pawn pawn1 = new Pawn (6, 0, black);
Pawn pawn2 = new Pawn (6, 1, black);
Pawn pawn3 = new Pawn (6, 2, black);
Pawn pawn4 = new Pawn (6, 3, black);
Pawn pawn5 = new Pawn (6, 4, black);
Pawn pawn6 = new Pawn (6, 5, black);
Pawn pawn7 = new Pawn (6, 6, black);
Pawn pawn8 = new Pawn (6, 7, black);
Bishop test = new Bishop (2, 2, white);
Rook test2 = new Rook (4,4, white);
//Bishop test2 = new Bishop (4, 4, white);
/* System.out.println (board[2][2].make_a_move (south, west, 2, 2));
System.out.println (board[4][4].make_a_move (south, east, 1, 0));
System.out.println (board[6][7].make_a_move (north, east, 1, 0));
System.out.println (board[5][7].make_a_move (north, east, 1, 0));
System.out.println (board[4][7].make_a_move (north, east, 1, 0));
System.out.println (board[3][7].make_a_move (north, west, 1, 0));
System.out.println (board[2][7].make_a_move (north, west, 1, 1));*/
}
}
}
class Figure {
int x;
int y;
boolean alive;
boolean color;
boolean empty;
String name;
int getx() {return x;}
int gety() {return y;}
boolean isalive() {return alive;}
void setdeath() {this.alive = death;}
void setalive() {this.alive = lives;}
void setxy (int y, int x) {this.y = y; this.x = x;board[y][x] = this;}
boolean isset () {return !empty;}
void setempty () {this.empty = true;}
void setnotempty () {this.empty = false;}
int succx (int direastwest) {
if (direastwest == west)
return -1;
return +1;
}
int succy (int dirnorthsouth) {
if (dirnorthsouth == north)
return -1;
return +1;
}
String getname () {return name;}
String getfullname () {
String cl;
if (empty == true)
cl = "";
else if (color == white)
cl = "white";
else
cl = "black";
return cl + " " + name;
}
void setname (String name) {this.name = name;}
boolean getcolor () {return color;}
void setcolor (boolean color) {this.color = color;}
boolean make_a_move_bishop (int dirnorthsouth, int direastwest, int inorthsouth, int ieastwest) {
boolean ok = true;
int dirx = 1;
int diry = 1;
int newx;
int newy;
int startx;
int starty;
int endx;
int endy;
int i, j;
int oldx = getx();
int oldy = gety();
if (inorthsouth == ieastwest) {
dirx = succx (direastwest);
diry = succy (dirnorthsouth);
newx = getx() + (ieastwest * dirx);
newy = gety() + (inorthsouth * diry);
if ((newx < xmin) || (newx > xmax) || (newy < ymin) || (newy > ymax))
ok = false;
if (ok) {
if (newx > getx()) {
startx = newx;
endx = getx();
}
else {
startx = getx();
endx = newx;
}
if (newy > gety ()) {
starty = newy;
endy = gety();
}
else {
starty = gety();
endy = newy;
}
for (i = starty-1, j = startx-1; (i > endy) && (j > endx); i--, j--)
if (board[i][j].isset())
ok = false;
if (board[newy][newx].isset()) {
if (board[newy][newx].getcolor() == this.getcolor())
ok = false;
}
if (ok) {
setxy (newy,newx);
new Empty (oldy, oldx);
}
}
}
else
ok = false;
return ok;
}
boolean make_a_move_rook (int dirnorthsouth, int direastwest, int inorthsouth, int ieastwest) {
boolean ok = true;
int dirx = 1;
int diry = 1;
int newx;
int newy;
int startx;
int starty;
int endx;
int endy;
int i, j;
int oldx = getx();
int oldy = gety();
if ((inorthsouth == 0) && (ieastwest != 0)) {
dirx = succx (direastwest);
newx = getx() + (ieastwest * dirx);
newy = gety();
if ((newx < xmin) || (newx > xmax) || (newy < ymin) || (newy > ymax))
ok = false;
if (ok) {
if (newx > getx()) {
startx = newx;
endx = getx();
}
else {
startx = getx();
endx = newx;
}
for (i = gety(), j = startx-1; j > endx; j--)
if (board[i][j].isset())
ok = false;
if (board[newy][newx].isset()) {
if (board[newy][newx].getcolor() == this.getcolor())
ok = false;
}
if (ok) {
setxy (newy,newx);
new Empty (oldy, oldx);
}
}
}
else if ((inorthsouth != 0) && (ieastwest == 0)) {
diry = succy (dirnorthsouth);
newx = getx();
newy = gety() + (inorthsouth * diry);
if ((newx < xmin) || (newx > xmax) || (newy < ymin) || (newy > ymax))
ok = false;
if (ok) {
if (newy > gety()) {
starty = newy;
endy = gety();
}
else {
starty = gety();
endy = newy;
}
for (i = starty - 1, j = getx(); i > endy; i--)
if (board[i][j].isset())
ok = false;
if (board[newy][newx].isset()) {
if (board[newy][newx].getcolor() == this.getcolor())
ok = false;
}
if (ok) {
setxy (newy,newx);
new Empty (oldy, oldx);
}
}
}
else
ok = false;
return ok;
}
boolean make_a_move_queen( int dirnorthsouth, int direastwest, int inorthsouth, int ieastwest) {
if (make_a_move_bishop(dirnorthsouth, direastwest, inorthsouth, ieastwest))
return true;
else if (make_a_move_rook(dirnorthsouth, direastwest, inorthsouth, ieastwest))
return true;
return false;
}
boolean make_a_move_king(int dirnorthsouth, int direastwest, int inorthsouth, int ieastwest) {
if ((inorthsouth > 1) || (ieastwest > 1))
return false;
else if (make_a_move_bishop(dirnorthsouth, direastwest, inorthsouth, ieastwest))
return true;
else if (make_a_move_rook(dirnorthsouth, direastwest, inorthsouth, ieastwest))
return true;
return false;
}
boolean make_a_move_pawn( int dirnorthsouth, int direastwest, int inorthsouth, int ieastwest) {
int dirx, diry, newx, newy;
int oldy = gety();
int oldx = getx();
dirx = succx (direastwest);
diry = succy (dirnorthsouth);
newx = getx() + (ieastwest * dirx);
newy = gety() + (inorthsouth * diry);
if ((newx < xmin) || (newx > xmax) || (newy < ymin) || (newy > ymax))
return false;
if (this.color == white) {
if (dirnorthsouth != south)
return false;
if ((inorthsouth > 1) || (ieastwest) > 1)
return false;
else if (ieastwest == 0) {
if (!board[gety()+1][getx()].isset()) {
setxy(gety()+1, getx());
new Empty (oldy, oldx);
return true;
}
}
else if (ieastwest == 1) {
if (direastwest == west)
if (board[gety()+1][getx()-1].isset() && board[gety()+1][getx()-1].getcolor() == black) {
setxy (gety()+1, getx()-1);
new Empty (oldy, oldx);
return true;
}
else if (direastwest == east)
if (board[gety()+1][getx()+1].isset() && board[gety()+1][getx()+1].getcolor() == black) {
setxy (gety()+1, getx()+1);
new Empty (oldy, oldx);
return true;
}
}
}
else if (this.color == black) {
if (dirnorthsouth != north)
return false;
if ((inorthsouth > 1) || (ieastwest) > 1)
return false;
else if (ieastwest == 0) {
if (!board[gety()-1][gety()].isset()) {
setxy (gety()-1, getx());
new Empty (oldy, oldx);
return true;
}
}
else if (ieastwest == 1) {
if (direastwest == west) {
if (board[gety()-1][getx()-1].isset() && board[gety()-1][getx()-1].getcolor() == white) {
setxy (gety()-1,getx()-1);
new Empty (oldy, oldx);
return true;
}
}
else if (direastwest == east)
if (board[gety()-1][getx()+1].isset() && board[gety()-1][getx()+1].getcolor() == white) {
setxy (gety()-1,getx()+1);
new Empty (oldy, oldx);
return true;
}
}
}
return false;
}
boolean make_a_move (int dirnorthsouth, int direastwest, int inorthsouth, int ieastwest) {
boolean retval = false;
if (this instanceof Rook)
retval = make_a_move_rook (dirnorthsouth, direastwest, inorthsouth, ieastwest);
if (this instanceof Bishop)
retval = make_a_move_bishop (dirnorthsouth, direastwest, inorthsouth, ieastwest);
if (this instanceof Queen)
retval = make_a_move_queen (dirnorthsouth, direastwest, inorthsouth, ieastwest);
if (this instanceof King)
retval = make_a_move_queen (dirnorthsouth, direastwest, inorthsouth, ieastwest);
if (this instanceof Pawn)
retval = make_a_move_pawn (dirnorthsouth, direastwest, inorthsouth, ieastwest);
return retval;
}
}
class Pawn extends Figure {
Pawn (int y, int x, boolean color) {
setalive();
setname ("pawn");
setcolor (color);
setnotempty();
setxy (y, x);
}
}
class Rook extends Figure {
Rook(int y, int x, boolean color) {
setalive();
setname ("rook");
setcolor (color);
setnotempty();
setxy (y, x);
}
boolean make_a_move(int dirnorthsouth, int direastwest, int inorthsouth, int ieastwest) {
return make_a_move_rook (dirnorthsouth, direastwest, inorthsouth, ieastwest);
}
}
class Knight extends Figure {
Knight (int y, int x, boolean color) {
setalive();
setname ("knight");
setcolor (color);
setnotempty();
setxy (y, x);
}
}
class Bishop extends Figure {
Bishop (int y, int x, boolean color) {
setalive();
setname ("bishop");
setcolor (color);
setnotempty();
setxy (y, x);
}
boolean make_a_move(int dirnorthsouth, int direastwest, int inorthsouth, int ieastwest) {
return make_a_move_bishop (dirnorthsouth, direastwest, inorthsouth, ieastwest);
}
}
class King extends Figure {
King (int y, int x, boolean color) {
setalive();
setname ("king");
setcolor (color);
setnotempty();
setxy (y, x);
}
boolean make_a_move(int dirnorthsouth, int direastwest, int inorthsouth, int ieastwest) {
return make_a_move_king (dirnorthsouth, direastwest, inorthsouth, ieastwest);
}
}
class Queen extends Figure {
Queen (int y, int x, boolean color) {
setalive();
setname ("queen");
setcolor (color);
setnotempty();
setxy (y, x);
}
boolean make_a_move(int dirnorthsouth, int direastwest, int inorthsouth, int ieastwest) {
return make_a_move_queen (dirnorthsouth, direastwest, inorthsouth, ieastwest);
}
}
class Empty extends Figure {
Empty (int y, int x) {
setalive();
setname ("empty");
setxy (y, x);
setempty();
}
}
}
}
