public RoverPosition CheckObstacle(bool moveRover, char command, RoverPosition pos, List <Tuple <int, int> > Obstacles)
{
if (command == 'F' || command == 'B')
{
int newXCoordinate = -1, newYCoordinate = -1;
switch (command)
{
case 'F':
switch (pos.Facing)
{
case 'N':
newXCoordinate = pos.xCoordinate;
newYCoordinate = pos.yCoordinate + 1;
break;
case 'S':
newXCoordinate = pos.xCoordinate;
newYCoordinate = pos.yCoordinate - 1;
break;
case 'W':
newXCoordinate = pos.xCoordinate - 1;
newYCoordinate = pos.yCoordinate;
break;
case 'E':
newXCoordinate = pos.xCoordinate + 1;
newYCoordinate = pos.yCoordinate;
break;
default:
break;
}
break;
case 'B':
switch (pos.Facing)
{
case 'N':
newXCoordinate = pos.xCoordinate;
newYCoordinate = pos.yCoordinate - 1;
break;
case 'S':
newXCoordinate = pos.xCoordinate;
newYCoordinate = pos.yCoordinate + 1;
break;
case 'W':
newXCoordinate = pos.xCoordinate + 1;
newYCoordinate = pos.yCoordinate;
break;
case 'E':
newXCoordinate = pos.xCoordinate - 1;
newYCoordinate = pos.yCoordinate;
break;
default:
break;
}
break;
default:
break;
}
//check if obstacle present on new coordinates (after wrapping)
RoverPosition tempPosition = new RoverPosition()
{
xCoordinate = newXCoordinate,
yCoordinate = newYCoordinate,
Facing = pos.Facing,
ObstaclePresent = false
};
tempPosition = Wrapper.ApplyWrapperToPosition(tempPosition);
Tuple <int, int> newPosition = new Tuple <int, int>(tempPosition.xCoordinate, tempPosition.yCoordinate);
pos.ObstaclePresent = Obstacles.Contains(newPosition);
if (moveRover && !pos.ObstaclePresent)
{
pos.xCoordinate = tempPosition.xCoordinate;
pos.yCoordinate = tempPosition.yCoordinate;
}
}
return(pos);
}
