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Copy pathAttacking.java
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360 lines (271 loc) · 13.2 KB
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import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
public class Attacking {
public List<Positon> pawn(Board board, Positon positon) {
Piece pawn = board.getPiece(positon);
if (pawn == null || pawn.getName() != PIECES.PAWN) {
return new ArrayList<>();
}
List<Positon> attacking = new ArrayList<>();
if (positon.getIndex() < Board.CHESS_CONSTANT - 1) {
attacking.add(new Positon(
pawn.getColor() == COLORS.WHITE ? positon.getRank() + 1 : positon.getRank() - 1,
positon.getIndex() + 1));
}
if (positon.getIndex() > 0) {
attacking.add(new Positon(
pawn.getColor() == COLORS.WHITE ? positon.getRank() + 1 : positon.getRank() - 1,
positon.getIndex() - 1));
}
return attacking;
}
public List<Positon> rook(Board board, Positon positon) {
Piece rook = board.getPiece(positon);
if (rook == null || (rook.getName() != PIECES.ROOK && rook.getName() != PIECES.QUEEN)) {
return new ArrayList<>();
}
Map<Integer, List<Square>> innerMap = board.getMap();
List<Positon> attacking = new ArrayList<>();
List<Square> rank = innerMap.get(positon.getRank());
// get the squares on the right side..
for (int i = positon.getIndex() + 1; i < Board.CHESS_CONSTANT; i++) {
attacking.add(new Positon(positon.getRank(), i));
if (rank.get(i).getPiece() != null && rank.get(i).getPiece().getName() == PIECES.KING
&& rank.get(i).getPiece().getColor() != rook.getColor()) {
continue;
}
if (rank.get(i).getPiece() != null) {
break;
}
}
// get the piece on the left side..
for (int i = positon.getIndex() - 1; i >= 0; i--) {
attacking.add(new Positon(positon.getRank(), i));
if (rank.get(i).getPiece() != null && rank.get(i).getPiece().getName() == PIECES.KING
&& rank.get(i).getPiece().getColor() != rook.getColor()) {
continue;
}
if (rank.get(i).getPiece() != null) {
break;
}
}
// get the piece on the bottom..
for (int i = positon.getRank() - 1; i >= 1; i--) {
attacking.add(new Positon(i, positon.getIndex()));
if (innerMap.get(i).get(positon.getIndex()).getPiece() != null
&& innerMap.get(i).get(positon.getIndex()).getPiece().getName() == PIECES.KING
&& innerMap.get(i).get(positon.getIndex()).getPiece().getColor() != rook.getColor()) {
continue;
}
if (innerMap.get(i).get(positon.getIndex()).getPiece() != null) {
break;
}
}
// get the piece on the top..
for (int i = positon.getRank() + 1; i <= Board.CHESS_CONSTANT; i++) {
attacking.add(new Positon(i, positon.getIndex()));
if (innerMap.get(i).get(positon.getIndex()).getPiece() != null
&& innerMap.get(i).get(positon.getIndex()).getPiece().getName() == PIECES.KING
&& innerMap.get(i).get(positon.getIndex()).getPiece().getColor() != rook.getColor()) {
continue;
}
if (innerMap.get(i).get(positon.getIndex()).getPiece() != null) {
break;
}
}
return attacking;
}
public List<Positon> knight(Board board, Positon positon) throws InvalidPosition {
Piece knight = board.getPiece(positon);
if (knight == null || knight.getName() != PIECES.KNIGHT) {
return new ArrayList<>();
}
return Utils.validKnightMoves(positon);
}
public List<Positon> bishop(Board board, Positon positon) {
Piece bishop = board.getPiece(positon);
if (bishop == null || (bishop.getName() != PIECES.BISHOP && bishop.getName() != PIECES.QUEEN)) {
return new ArrayList<>();
}
Map<Integer, List<Square>> innerMap = board.getMap();
List<Positon> attacking = new ArrayList<>();
// right upper diagonals loop
int j = positon.getIndex() + 1;
for (int i = positon.getRank() + 1; i <= Board.CHESS_CONSTANT && j < Board.CHESS_CONSTANT; i++) {
attacking.add(new Positon(i, j));
if (innerMap.get(i).get(j).getPiece() != null && innerMap.get(i).get(j).getPiece().getName() == PIECES.KING
&& innerMap.get(i).get(j).getPiece().getColor() != bishop.getColor()) {
j++;
continue;
}
if (innerMap.get(i).get(j++).getPiece() != null) {
break;
}
}
// left upper diagonals loop
j = positon.getIndex() - 1;
for (int i = positon.getRank() + 1; i <= Board.CHESS_CONSTANT && j >= 0; i++) {
attacking.add(new Positon(i, j));
if (innerMap.get(i).get(j).getPiece() != null && innerMap.get(i).get(j).getPiece().getName() == PIECES.KING
&& innerMap.get(i).get(j).getPiece().getColor() != bishop.getColor()) {
j--;
continue;
}
if (innerMap.get(i).get(j--).getPiece() != null) {
break;
}
}
// right lower diagonals loop
j = positon.getIndex() + 1;
for (int i = positon.getRank() - 1; i > 0 && j < Board.CHESS_CONSTANT; i--) {
attacking.add(new Positon(i, j));
if (innerMap.get(i).get(j).getPiece() != null && innerMap.get(i).get(j).getPiece().getName() == PIECES.KING
&& innerMap.get(i).get(j).getPiece().getColor() != bishop.getColor()) {
j++;
continue;
}
if (innerMap.get(i).get(j++).getPiece() != null) {
break;
}
}
// left lower diagonals loop
j = positon.getIndex() - 1;
for (int i = positon.getRank() - 1; i > 0 && j >= 0; i--) {
attacking.add(new Positon(i, j));
if (innerMap.get(i).get(j).getPiece() != null && innerMap.get(i).get(j).getPiece().getName() == PIECES.KING
&& innerMap.get(i).get(j).getPiece().getColor() != bishop.getColor()) {
j--;
continue;
}
if (innerMap.get(i).get(j--).getPiece() != null) {
break;
}
}
return attacking;
}
public List<Positon> queen(Board board, Positon positon) {
Piece queen = board.getPiece(positon);
if (queen == null || queen.getName() != PIECES.QUEEN) {
return new ArrayList<>();
}
List<Positon> attacking = new ArrayList<>();
attacking.addAll(this.rook(board, positon));
attacking.addAll(this.bishop(board, positon));
return attacking;
}
public List<Positon> king(Board board, Positon positon) throws InvalidPosition {
Piece king = board.getPiece(positon);
if (king == null || king.getName() != PIECES.KING) {
System.out.println("Not a king !");
return new ArrayList<>();
}
List<Positon> attacking = new ArrayList<>();
if (positon.getRank() < Board.CHESS_CONSTANT && positon.getIndex() > 0) {
attacking.add(new Positon(positon.getRank() + 1, positon.getIndex() - 1));
}
if (positon.getRank() < Board.CHESS_CONSTANT) {
attacking.add(new Positon(positon.getRank() + 1, positon.getIndex()));
}
if (positon.getRank() < Board.CHESS_CONSTANT && positon.getIndex() < Board.CHESS_CONSTANT - 1) {
attacking.add(new Positon(positon.getRank() + 1, positon.getIndex() + 1));
}
if (positon.getIndex() < Board.CHESS_CONSTANT - 1) {
attacking.add(new Positon(positon.getRank(), positon.getIndex() + 1));
}
if (positon.getRank() > 1 && positon.getIndex() < Board.CHESS_CONSTANT - 1) {
attacking.add(new Positon(positon.getRank() - 1, positon.getIndex() + 1));
}
if (positon.getRank() > 1) {
attacking.add(new Positon(positon.getRank() - 1, positon.getIndex()));
}
if (positon.getRank() > 1 && positon.getIndex() > 0) {
attacking.add(new Positon(positon.getRank() - 1, positon.getIndex() - 1));
}
if (positon.getIndex() > 0) {
attacking.add(new Positon(positon.getRank(), positon.getIndex() - 1));
}
return attacking;
}
// public static Set<Positon> getAllAttackingPositions(Board board, COLORS
// color) throws InvalidPosition {
// Attacking attacking = new Attacking();
// Set<Positon> allPositons = new HashSet<>();
// for (Map.Entry<Integer, List<Square>> rank : board.getMap().entrySet()) {
// List<Square> currentRank = rank.getValue();
// for (int i = 0; i < currentRank.size(); i++) {
// Piece currentPiece = currentRank.get(i).getPiece();
// System.out.println(new Positon(rank.getKey(), i));
// if (currentPiece != null && currentPiece.getColor() == color) {
// if (currentPiece.getName() == PIECES.PAWN) {
// allPositons.addAll(attacking.pawn(board, new Positon(rank.getKey(), i)));
// } else if (currentPiece.getName() == PIECES.ROOK) {
// allPositons.addAll(attacking.rook(board, new Positon(rank.getKey(), i)));
// } else if (currentPiece.getName() == PIECES.KNIGHT) {
// allPositons.addAll(attacking.knight(board, new Positon(rank.getKey(), i)));
// } else if (currentPiece.getName() == PIECES.BISHOP) {
// allPositons.addAll(attacking.bishop(board, new Positon(rank.getKey(), i)));
// } else if (currentPiece.getName() == PIECES.QUEEN) {
// allPositons.addAll(attacking.queen(board, new Positon(rank.getKey(), i)));
// } else if (currentPiece.getName() == PIECES.KING) {
// allPositons.addAll(attacking.king(board, new Positon(rank.getKey(), i)));
// }
// }
// }
// }
// return allPositons;
// }
public static AttackingInfo getAllAttackingPositions(Board board) throws InvalidPosition {
Set<Positon> whiteAttacking = new HashSet<>();
Set<Positon> blackAttacking = new HashSet<>();
Attacking attacking = new Attacking();
for (Map.Entry<Integer, List<Square>> rank : board.getMap().entrySet()) {
List<Square> currentRank = rank.getValue();
for (int i = 0; i < currentRank.size(); i++) {
Piece currentPiece = currentRank.get(i).getPiece();
if (currentPiece != null) {
if (currentPiece.getName() == PIECES.PAWN) {
if (currentPiece.getColor() == COLORS.WHITE) {
whiteAttacking.addAll(attacking.pawn(board, new Positon(rank.getKey(), i)));
} else {
blackAttacking.addAll(attacking.pawn(board, new Positon(rank.getKey(), i)));
}
} else if (currentPiece.getName() == PIECES.ROOK) {
if (currentPiece.getColor() == COLORS.WHITE) {
whiteAttacking.addAll(attacking.rook(board, new Positon(rank.getKey(), i)));
} else {
blackAttacking.addAll(attacking.rook(board, new Positon(rank.getKey(), i)));
}
} else if (currentPiece.getName() == PIECES.KNIGHT) {
if (currentPiece.getColor() == COLORS.WHITE) {
whiteAttacking.addAll(attacking.knight(board, new Positon(rank.getKey(), i)));
} else {
blackAttacking.addAll(attacking.knight(board, new Positon(rank.getKey(), i)));
}
} else if (currentPiece.getName() == PIECES.BISHOP) {
if (currentPiece.getColor() == COLORS.WHITE) {
whiteAttacking.addAll(attacking.bishop(board, new Positon(rank.getKey(), i)));
} else {
blackAttacking.addAll(attacking.bishop(board, new Positon(rank.getKey(), i)));
}
} else if (currentPiece.getName() == PIECES.QUEEN) {
if (currentPiece.getColor() == COLORS.WHITE) {
whiteAttacking.addAll(attacking.queen(board, new Positon(rank.getKey(), i)));
} else {
blackAttacking.addAll(attacking.queen(board, new Positon(rank.getKey(), i)));
}
} else if (currentPiece.getName() == PIECES.KING) {
if (currentPiece.getColor() == COLORS.WHITE) {
whiteAttacking.addAll(attacking.king(board, new Positon(rank.getKey(), i)));
} else {
blackAttacking.addAll(attacking.king(board, new Positon(rank.getKey(), i)));
}
}
}
}
}
return new AttackingInfo(whiteAttacking, blackAttacking);
}
}