public TentsAndTrees(PlayingField playingField) {
if (playingField == null) {
throw new IllegalArgumentException("PlayingField is null.");
}
gameField = playingField.getPlayingField();
columnHints = playingField.getColumnHints();
rowHints = playingField.getRowHints();
this.height = gameField.length;
this.width = gameField[0].length;
}
