int[4] x = {worldMap.mapCells[i - 1][j].getTerrain(),worldMap.mapCells[i][j + 1].getTerrain(),worldMap.mapCells[i + 1][j].getTerrain(),worldMap.mapCells[i][j - 1].getTerrain()}
for (int i = 0; i < x.length; i++){
if (x[i] == x.getTerrain()){
break;
}
else worldMap.mapCells[i][j].setTerrain();
}