/// <summary>
/// Move the tank to a new location.
/// </summary>
/// <param name="newPosition">Screen position to place the tank at.</param>
public void Move(Vector2 newPosition)
{
// Gets the center point of the map displayed
Vector2 positionOnMap = TileSystem.LatLongToPixelXY(viewer.CenterGeoCoordinate, viewer.ZoomLevel)
- viewer.Offset;
// Calculate the distance between the center of the screen and the tank's position
Vector2 distance = newPosition - BingMapsViewer.ScreenCenter;
Vector2 newPositionOnMap = positionOnMap + distance;
// Gets the tank's geo-coordinate
currentGeoPosition = TileSystem.PixelXYToLatLong(newPositionOnMap, viewer.ZoomLevel);
routes.Clear();
pushPins.Clear();
targetGeoPosition = null;
currentPushPin = null;
currentRouteNode = null;
}
/// <summary>
/// DrawTank the pushpin on the screen, if the screen contains the push pin.
/// </summary>
public void Draw()
{
// Gets the center of the map displayed
Vector2 center = TileSystem.LatLongToPixelXY(bingMapsViewer.CenterGeoCoordinate, bingMapsViewer.ZoomLevel);
// Gets the position of the push pin on the map
position = TileSystem.LatLongToPixelXY(Location, bingMapsViewer.ZoomLevel);
// Calculates the distance between them
Vector2 placeOnScreen = (position - center) + BingMapsViewer.ScreenCenter + bingMapsViewer.Offset;
// If the pushpin is within screen bounds, draw it
if (screenBounds.Contains((int)placeOnScreen.X, (int)placeOnScreen.Y))
{
placeOnScreen.X -= texture.Width / 2;
placeOnScreen.Y -= texture.Height;
bingMapsViewer.SpriteBatch.Draw(texture, placeOnScreen, Color.White);
}
}
/// <summary>
/// Initializes the active tile plane by requesting images centered at the specified geo-coordinate.
/// </summary>
/// <param name="centerCoordinate">The geo-coordinate which will serve as the center of the
/// middle tile.</param>
private void GetActivePlaneImages(GeoCoordinate centerCoordinate)
{
Vector2 centerPixelXY = TileSystem.LatLongToPixelXY(centerCoordinate, zoomLevel);
int planeCenterIndex = PlaneCenterIndex;
for (int xIndex = 0; xIndex < ActiveTilePlaneSize; xIndex++)
{
int xDelta = xIndex - planeCenterIndex;
for (int yIndex = 0; yIndex < ActiveTilePlaneSize; yIndex++)
{
int yDelta = yIndex - planeCenterIndex;
TileInformation cellInformation = activeTilePlane[xIndex, yIndex];
// Initialize or clean the active tile cube cell
if (cellInformation == null)
{
cellInformation = new TileInformation(TileServerRequestCompleted);
activeTilePlane[xIndex, yIndex] = cellInformation;
}
else
{
cellInformation.Dispose();
}
// Calculate the center geo-coordinate for the current tile
Vector2 tileCenterPixelXY = centerPixelXY + tileDimensions * new Vector2(xDelta, yDelta);
GeoCoordinate tileCenterGeoCoordinate;
try
{
tileCenterGeoCoordinate = TileSystem.PixelXYToLatLong(tileCenterPixelXY, zoomLevel);
GetImageFromServer(cellInformation, tileCenterGeoCoordinate, zoomLevel, ViewType);
}
catch (ArgumentOutOfRangeException)
{
cellInformation.Image = unavailableImage;
}
}
}
}
/// <summary>
/// Allows the game component to update itself.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
public override void Update(GameTime gameTime)
{
// Do nothing if there is no push-pin to reach
if (currentPushPin == null)
{
return;
}
// Check if the current push-pin does not have a route leading to it
if (!isParsingMovment && currentPushPin != null && pushPins.Contains(currentPushPin.Value) &&
!IsRouteContained(routes, currentPushPin.Value.ID))
{
// Gets the missing route from the server
GetRouteFromServer(viewer.BingMapKey, currentGeoPosition, currentPushPin.Value.Location,
currentPushPin);
}
else
{
// Update the target geo-coordinate if there is none
if (routes.Count > 0 && IsRouteContained(routes, currentPushPin.Value.ID) &&
GetMapper(routes, currentPushPin.Value.ID).PushPinRoute.Last != currentRouteNode &&
targetGeoPosition == null)
{
LinkedList <GeoCoordinate> currentRoute =
GetMapper(routes, currentPushPin.Value.ID).PushPinRoute;
if (currentRoute != null && currentRoute.Count > 0)
{
currentRouteNode = GetMapper(routes, currentPushPin.Value.ID).PushPinRoute.First;
targetGeoPosition = currentRouteNode.Value;
}
}
if (targetGeoPosition != null && currentGeoPosition != null)
{
// Get the center of the map presented
Vector2 center = TileSystem.LatLongToPixelXY(viewer.CenterGeoCoordinate, viewer.ZoomLevel);
// Gets the position of the target on the map
Vector2 position = TileSystem.LatLongToPixelXY(targetGeoPosition, viewer.ZoomLevel);
// Calculate the distance which gets the position on the screen
Vector2 targetPosition = (position - center) + BingMapsViewer.ScreenCenter;
// Does the same to the current position of the tank
position = TileSystem.LatLongToPixelXY(currentGeoPosition, viewer.ZoomLevel);
Vector2 currentPosition = (position - center) + BingMapsViewer.ScreenCenter;
Vector2 distanceBetweenTargetAndCurrentPosition = targetPosition - currentPosition;
// If the tank has reached the target
if (((distanceBetweenTargetAndCurrentPosition.X <= 1 &&
distanceBetweenTargetAndCurrentPosition.X >= 0) ||
(distanceBetweenTargetAndCurrentPosition.X >= -1 &&
distanceBetweenTargetAndCurrentPosition.X <= 0)) &&
(distanceBetweenTargetAndCurrentPosition.Y <= 1 &&
distanceBetweenTargetAndCurrentPosition.Y >= 0) ||
(distanceBetweenTargetAndCurrentPosition.Y >= -1 &&
distanceBetweenTargetAndCurrentPosition.Y <= 0))
{
HandleTankReachedTargetPosition();
return;
}
currentPosition = HandleTankMovement(targetPosition, currentPosition);
// Converts the current screen position to geo coordinate
Vector2 dif = currentPosition - BingMapsViewer.ScreenCenter;
Vector2 PositionOnMap = center + dif;
currentGeoPosition = TileSystem.PixelXYToLatLong(PositionOnMap, viewer.ZoomLevel);
}
}
base.Update(gameTime);
}
/// <summary>
/// Handle the input of the sample.
/// </summary>
private void HandleInput()
{
TouchCollection touchCollection = TouchPanel.GetState();
if (touchCollection.Count > 0)
{
TouchLocation touch = touchCollection[0];
// If the tank is moving he can not be relocated
if (!tank.IsMoving)
{
if (touch.State == TouchLocationState.Pressed && !isDragingTank)
{
Rectangle toucRect = new Rectangle((int)touch.Position.X - 5,
(int)touch.Position.Y - 5, 10, 10);
if (tank.Bounds.Intersects(toucRect))
{
isDragingTank = true;
}
}
else if (touch.State == TouchLocationState.Moved && isDragingTank)
{
tank.Move(touch.Position);
}
else if (touch.State == TouchLocationState.Released && isDragingTank)
{
isDragingTank = false;
}
}
}
// Read all gesture
while (TouchPanel.IsGestureAvailable)
{
GestureSample sample = TouchPanel.ReadGesture();
// If the search button is clicked, the button will handle it.
if (serachButton.HandleInput(sample))
{
return;
}
// If the switch button is clicked, the button will handle it.
if (switchViewButton.HandleInput(sample))
{
return;
}
// If the change mode button is clicked, the button will handle it.
if (changeRotuingModeButton.HandleInput(sample))
{
return;
}
if (tank.IsMoving)
{
// If the draw route button is clicked, the button will handle it.
if (drawRouteButton.HandleInput(sample))
{
return;
}
// If the clear all pushpins button is clicked, the button will handle it.
if (clearPushPinsButton.HandleInput(sample))
{
return;
}
}
if (sample.GestureType == GestureType.Tap)
{
// Gets the position on the displayed map
Vector2 positionOnMap = TileSystem.LatLongToPixelXY(bingMapsViewer.CenterGeoCoordinate, ZoomLevel)
- bingMapsViewer.Offset;
// Gets the distance between the gesture and the center of the screen
Vector2 distance = sample.Position - BingMapsViewer.ScreenCenter;
// Calculate the distance between the center of the screen and the position on the map
Vector2 positionOfGesture = positionOnMap + distance;
PushPin pushPin = new PushPin(bingMapsViewer,
TileSystem.PixelXYToLatLong(positionOfGesture, ZoomLevel), pushPinTexture2D);
pushPins.AddLast(pushPin);
// Indicates to the Tank that new push pin is added
tank.AddPushPin(pushPin);
}
else if (sample.GestureType == GestureType.FreeDrag)
{
if (!isDragingTank)
{
// Move the map when dragging
bingMapsViewer.MoveByOffset(sample.Delta);
}
}
// When an hold gesture is caught on push pin ask if wants to delete
else if (sample.GestureType == GestureType.Hold)
{
// Creates a rectangle around the gesture
Rectangle touchRectangle = new Rectangle(
(int)sample.Position.X - 20,
(int)sample.Position.Y - 40, 60, 100);
foreach (PushPin pushPin in pushPins)
{
// Gets the center of the map displayed
Vector2 center = TileSystem.LatLongToPixelXY(bingMapsViewer.CenterGeoCoordinate,
bingMapsViewer.ZoomLevel);
// Gets the position of the push pin on the map
Vector2 position = TileSystem.LatLongToPixelXY(pushPin.Location, bingMapsViewer.ZoomLevel);
// Calculate the distance between them in screen scale
Vector2 targetPosition = (position - center) + BingMapsViewer.ScreenCenter +
bingMapsViewer.Offset;
// Checks if the push pin is in side the gesture rectangle
if (touchRectangle.Contains(new Rectangle((int)targetPosition.X, (int)targetPosition.Y, 1, 1)))
{
Guide.BeginShowMessageBox("Warning!", "Are you sure you want to delete this push pin?",
new List <string>()
{
"OK", "Cancel"
}, 0, MessageBoxIcon.Alert,
DeletePushPinCallBack, pushPin);
return;
}
}
}
}
}
