private void ForwardInstructionProcess(IPositionFinal positionFinal, IGridCoordinate gridCoordinate)
{
switch (positionFinal.FinalOrientation)
{
case 'N':
if (positionFinal.FinalYPosition + 1 > gridCoordinate.MaxYCoordinate)
{
positionFinal.Lost = true;
}
else
{
positionFinal.FinalYPosition += 1;
}
break;
case 'S':
if (positionFinal.FinalYPosition - 1 < 0)
{
positionFinal.Lost = true;
}
else
{
positionFinal.FinalYPosition -= 1;
}
break;
case 'E':
if (positionFinal.FinalXPosition + 1 > gridCoordinate.MaxXCoordinate)
{
positionFinal.Lost = true;
}
else
{
positionFinal.FinalXPosition += 1;
}
break;
case 'W':
if (positionFinal.FinalXPosition - 1 < 0)
{
positionFinal.Lost = true;
}
else
{
positionFinal.FinalXPosition -= 1;
}
break;
default:
break;
}
}
public bool IsOffPosition(int gridId, IPositionFinal offPositionFinal)
{
bool result = false;
if (offDictionary.ContainsKey(gridId))
{
var offPosition = offDictionary[gridId].FirstOrDefault(
item =>
item.FinalXPosition == offPositionFinal.FinalXPosition &&
item.FinalYPosition == offPositionFinal.FinalYPosition &&
item.FinalOrientation == offPositionFinal.FinalOrientation &&
item.Lost
);
result = offPosition != null;
}
return(result);
}
public void Test_RobotPositionService_GetFinalPostion()
{
IDataService dataService = new DataService();
IRobotPositionService service = new RobotPositionService(dataService);
IPositionStarting positionStarting1 = new PositionStarting
{
StartingXPosition = 1,
StartingYPosition = 1,
Orientation = 'E',
Instructions = "RFRFRFRF"
};
IPositionFinal positionFinal1 = service.GetFinalPostion(1, positionStarting1);
Assert.AreEqual(1, positionFinal1.FinalXPosition);
Assert.AreEqual(1, positionFinal1.FinalYPosition);
Assert.AreEqual('E', positionFinal1.FinalOrientation);
Assert.AreEqual(false, positionFinal1.Lost);
IPositionStarting positionStarting2 = new PositionStarting
{
StartingXPosition = 3,
StartingYPosition = 2,
Orientation = 'N',
Instructions = "FRRFLLFFRRFLL"
};
IPositionFinal positionFinal2 = service.GetFinalPostion(1, positionStarting2);
Assert.AreEqual(3, positionFinal2.FinalXPosition);
Assert.AreEqual(3, positionFinal2.FinalYPosition);
Assert.AreEqual('N', positionFinal2.FinalOrientation);
Assert.AreEqual(true, positionFinal2.Lost);
IPositionStarting positionStarting3 = new PositionStarting
{
StartingXPosition = 0,
StartingYPosition = 3,
Orientation = 'W',
Instructions = "LLFFFLFLFL"
};
IPositionFinal positionFinal3 = service.GetFinalPostion(1, positionStarting3);
Assert.AreEqual(2, positionFinal3.FinalXPosition);
Assert.AreEqual(3, positionFinal3.FinalYPosition);
Assert.AreEqual('S', positionFinal3.FinalOrientation);
Assert.AreEqual(false, positionFinal3.Lost);
}
public bool SaveOffPosition(int gridId, IPositionFinal offPositionFinal)
{
bool result = false;
if (offPositionFinal.Lost)
{
if (!offDictionary.ContainsKey(gridId))
{
IList <IPositionFinal> list = new List <IPositionFinal>();
list.Add(offPositionFinal);
offDictionary.Add(gridId, list);
result = true;
}
else
{
if (!IsOffPosition(gridId, offPositionFinal))
{
offDictionary[gridId].Add(offPositionFinal);
result = true;
}
}
}
return(result);
}
public void Test_RobotPositionWebAPI_EndPoint2_Grid_Id_Rover()
{
IGridCoordinate gridCoordinate = new GridCoordinate {
MaxXCoordinate = 5, MaxYCoordinate = 3
};
IPositionStarting positionStarting1 = new PositionStarting
{
StartingXPosition = 1,
StartingYPosition = 1,
Orientation = 'E',
Instructions = "RFRFRFRF"
};
IPositionStarting positionStarting2 = new PositionStarting
{
StartingXPosition = 3,
StartingYPosition = 2,
Orientation = 'N',
Instructions = "FRRFLLFFRRFLL"
};
IPositionStarting positionStarting3 = new PositionStarting
{
StartingXPosition = 0,
StartingYPosition = 3,
Orientation = 'W',
Instructions = "LLFFFLFLFL"
};
string endPointURI = (new Uri(baseUri, "grid/1/rover")).ToString();
using (var client = new HttpClient())
{
var response = client.PostAsync(endPointURI, GetStringContent(positionStarting1)).Result;
Assert.IsTrue(response.IsSuccessStatusCode);
if (response.IsSuccessStatusCode)
{
IPositionFinal positionFinal = JsonConvert.DeserializeObject <PositionFinal>(response.Content.ReadAsStringAsync().Result);
Assert.AreEqual(1, positionFinal.FinalXPosition);
Assert.AreEqual(1, positionFinal.FinalYPosition);
Assert.AreEqual('E', positionFinal.FinalOrientation);
Assert.AreEqual(false, positionFinal.Lost);
}
response = client.PostAsync(endPointURI, GetStringContent(positionStarting2)).Result;
Assert.IsTrue(response.IsSuccessStatusCode);
if (response.IsSuccessStatusCode)
{
IPositionFinal positionFinal = JsonConvert.DeserializeObject <PositionFinal>(response.Content.ReadAsStringAsync().Result);
Assert.AreEqual(3, positionFinal.FinalXPosition);
Assert.AreEqual(3, positionFinal.FinalYPosition);
Assert.AreEqual('N', positionFinal.FinalOrientation);
Assert.AreEqual(true, positionFinal.Lost);
}
response = client.PostAsync(endPointURI, GetStringContent(positionStarting3)).Result;
Assert.IsTrue(response.IsSuccessStatusCode);
if (response.IsSuccessStatusCode)
{
IPositionFinal positionFinal = JsonConvert.DeserializeObject <PositionFinal>(response.Content.ReadAsStringAsync().Result);
Assert.AreEqual(2, positionFinal.FinalXPosition);
Assert.AreEqual(3, positionFinal.FinalYPosition);
Assert.AreEqual('S', positionFinal.FinalOrientation);
Assert.AreEqual(false, positionFinal.Lost);
}
}
}
private void LeftInstructionProcess(IPositionFinal positionFinal)
{
string leftDirections = "NWSE";
positionFinal.FinalOrientation = (leftDirections[(leftDirections.IndexOf(positionFinal.FinalOrientation) + 1) % 4]);
}
private void RightInstructionProcess(IPositionFinal positionFinal)
{
string rightDirections = "NESW";
positionFinal.FinalOrientation = (rightDirections[(rightDirections.IndexOf(positionFinal.FinalOrientation) + 1) % 4]);
}
public async Task <bool> SaveOffPositionIAsync(int gridId, IPositionFinal offPositionFinal)
{
return(await Task.FromResult(SaveOffPosition(gridId, offPositionFinal)));
}
