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public enum Move {
UP(0, -1), DOWN(0, 1), RIGHT(1, 0), LEFT(-1, 0);
private int horizontalMove;
private int verticalMove;
private Move(int horizontal, int vertical) {
this.horizontalMove = horizontal;
this.verticalMove = vertical;
}
public int getHorizontalMove() {
return horizontalMove;
}
public int getVerticalMove() {
return verticalMove;
}
public CellLocation getNextCellLocation(CellLocation currentLocation) {
return new CellLocation(getNextRow(currentLocation.getRowIndex()),
getNextColumn(currentLocation.getColumnIndex()));
}
private int getNextRow(int currentRow) {
return currentRow + verticalMove;
}
private int getNextColumn(int currentColumn) {
return currentColumn + horizontalMove;
}
public Move getInverse() {
switch (this) {
case UP:
return DOWN;
case DOWN:
return UP;
case LEFT:
return RIGHT;
case RIGHT:
return LEFT;
}
return null;
}
} |
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