public void UpdateInput(RenderingState renderingState)
{
while (TouchPanel.IsGestureAvailable)
{
var touchGesture = TouchPanel.ReadGesture();
Ray pickRay;
switch (touchGesture.GestureType)
{
case GestureType.Tap:
Polygon target = null;
pickRay = calculateRay(new Vector2(touchGesture.Position.X, touchGesture.Position.Y), renderingState);
target = calculateTargetPolygon(pickRay, renderingState);
if (touchGesture.Position.X > 700 && touchGesture.Position.Y > 415)
{
AudioState aux = content.ServiceProvider.GetService(typeof(AudioState)) as AudioState;
aux.playConfirm();
ManageQuest();
CompleteQuest();
}
break;
}
}
}
private Ray calculateRay(Vector2 position, RenderingState renderingState)
{
/*
* Calculate from the tap position X and Y the ray
* that intersects the polygon bounding sphere
*/
Vector3 nearPoint = new Vector3(position.X, position.Y, 0);
Vector3 farPoint = new Vector3(position.X, position.Y, 1);
nearPoint = renderingState.spriteBatch.GraphicsDevice.Viewport.Unproject
(nearPoint, renderingState.projection, renderingState.view, renderingState.world);
farPoint = renderingState.spriteBatch.GraphicsDevice.Viewport.Unproject
(farPoint, renderingState.projection, renderingState.view, renderingState.world);
Vector3 direction = Vector3.Normalize(farPoint - nearPoint);
return new Ray(nearPoint, direction);
}
private Polygon calculateTargetPolygon(Ray pickRay, RenderingState renderingState)
{
/*
* check if the ray itersects a polygon on the screen
*/
GameState gs = content.ServiceProvider.GetService(typeof(GameState)) as GameState;
Polygon target = null;
foreach (Polygon p in gs.polygons)
{
Vector3 position = p.coordinates;
BoundingSphere boundingSphere = renderingState.boundingSphereCube;
boundingSphere.Center = position;
if (pickRay.Intersects(boundingSphere) != null)
{
if (p.selected)
{
/*
* abort the selection of the polygon
*/
p.selected = false;
target = null;
return target;
}
else
{
/*
* allow the selection of the polygon
*/
AudioState aux = content.ServiceProvider.GetService(typeof(AudioState)) as AudioState;
aux.playRayPick();
p.selected = true;
target = p;
return target;
}
}
}
return target;
}
public void UpdateInputWindows(RenderingState renderingState)
{
MouseState touchGesture = Mouse.GetState();
Ray pickRay;
/*
* Grab mouse position
*
*/
float clickX = touchGesture.X;
float clickY = touchGesture.Y;
if (touchGesture.LeftButton == ButtonState.Pressed)
{
Polygon target = null;
pickRay = calculateRay(new Vector2(clickX, clickY), renderingState);
target = calculateTargetPolygon(pickRay, renderingState);
if (clickX > 700 && clickY > 415)
{
AudioState aux = content.ServiceProvider.GetService(typeof(AudioState)) as AudioState;
aux.playConfirm();
ManageQuest();
CompleteQuest();
}
}
}
