89 lines
2.9 KiB
Java
89 lines
2.9 KiB
Java
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package project.chess;
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import project.ui.Display;
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import java.awt.*;
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import java.util.ArrayList;
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public class Pawn extends ChessPiece {
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private Image white = Display.loadImage("./resources/chess_piece_2_black_pawn.png");
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private Image black = Display.loadImage("./resources/chess_piece_2_white_pawn.png");
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public Pawn(Board b, boolean isWhite, int x, int y) {
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super(b,isWhite,x,y);
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}
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public Image getImage(){
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if (isWhite)
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return white;
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return black;
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}
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@Override
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public ArrayList<Move> getMoves() {
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ArrayList<Move> moves = new ArrayList<Move>();
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if (isWhite) {
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moves.add(new Move(x, y + 1));
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if (isFirstMove)
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moves.add(new Move(x, y + 2));
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} else {
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moves.add(new Move(x, y - 1));
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if (isFirstMove)
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moves.add(new Move(x, y - 2));
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}
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ChessPiece neighbour = null;
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if (isWhite){
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// En passant
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if ((neighbour = b.get(x-1, y)) != null && checkNeighbourEnPassant(neighbour))
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moves.add(new Move(x-1, y + 1, Move.SpecialConditions.leftEnPassant));
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// En passant
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if ((neighbour = b.get(x+1, y)) != null && checkNeighbourEnPassant(neighbour))
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moves.add(new Move(x+1, + 1, Move.SpecialConditions.rightEnPassant));
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} else {
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// unfortunately have to flip the direction depending on player type
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// En passant
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if ((neighbour = b.get(x-1, y)) != null && checkNeighbourEnPassant(neighbour))
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moves.add(new Move(x-1, y - 1, Move.SpecialConditions.leftEnPassant));
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// En passant
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if ((neighbour = b.get(x+1, y)) != null && checkNeighbourEnPassant(neighbour))
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moves.add(new Move(x+1, - 1, Move.SpecialConditions.rightEnPassant));
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}
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return moves;
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}
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private boolean checkNeighbourEnPassant(ChessPiece neighbour){
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return neighbour instanceof Pawn && ((Pawn) neighbour).isFirstMove() && neighbour.isWhite != this.isWhite;
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}
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@Override
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public void applySpecialMove(Move moveWithSpecial){
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Move.SpecialConditions specialCondition;
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specialCondition = moveWithSpecial.getSpecialCondition();
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if(specialCondition == Move.SpecialConditions.leftEnPassant)
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enPassantLeft();
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else if (specialCondition == Move.SpecialConditions.rightEnPassant)
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enPassantRight();
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}
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private void enPassantLeft(){
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if (isWhite)
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b.set(x-1, y, null);
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else
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b.set(x+1, y, null);
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}
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private void enPassantRight(){
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if (isWhite)
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b.set(x+1, y, null);
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else
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b.set(x-1, y, null);
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}
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public Pawn clone () {
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return new Pawn(this.b,this.isWhite,this.x,this.y);
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}
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}
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