private int doubleTapCountdown = 0; // number of ticks remaining to tap again for a "double-tap".
#endregion Fields
#region Constructors
// default constructor.
public ComponentManager(int screenWidth, int screenHeight)
{
// these are flipped because screen is in landscape.
_screenWidth = screenHeight;
_screenHeight = screenWidth;
// set initial state
this.currentState = ComponentManagerState.noMenu;
// create component list
componentList = new LinkedList<Component>();
Component copperCoin = new Component(new Vector2(XNACS1Base.RandomFloat(0, XNACS1Base.World.WorldDimension.X), XNACS1Base.RandomFloat(0, XNACS1Base.World.WorldDimension.Y)));
copperCoin.Texture = "coppercoin";
copperCoin.RotateAngle = XNACS1Base.RandomFloat(0, 360);
componentList.AddLast(copperCoin);
Component goldCoin = new Component(new Vector2(XNACS1Base.RandomFloat(0, XNACS1Base.World.WorldDimension.X), XNACS1Base.RandomFloat(0, XNACS1Base.World.WorldDimension.Y)));
goldCoin.Texture = "goldCoin";
goldCoin.RotateAngle = XNACS1Base.RandomFloat(0, 360);
componentList.AddLast(goldCoin);
Component piggybank = new Component(new Vector2(XNACS1Base.RandomFloat(0, XNACS1Base.World.WorldDimension.X), XNACS1Base.RandomFloat(0, XNACS1Base.World.WorldDimension.Y)));
piggybank.Texture = "piggybank";
piggybank.RotateAngle = XNACS1Base.RandomFloat(0, 360);
componentList.AddLast(piggybank);
Component silvercoin = new Component(new Vector2(XNACS1Base.RandomFloat(0, XNACS1Base.World.WorldDimension.X), XNACS1Base.RandomFloat(0, XNACS1Base.World.WorldDimension.Y)));
silvercoin.Texture = "silvercoin";
silvercoin.RotateAngle = XNACS1Base.RandomFloat(0, 360);
componentList.AddLast(silvercoin);
// create a RemoveComponentMenu
// removeMenu = new RemoveComponentMenu();
}
private void updateNoMenuState()
{
// decrement count since last tap.
doubleTapCountdown--;
//obtain all of the devices TouchLocations
TouchCollection touchCollection = TouchPanel.GetState();
//check each of the devices TouchLocations;
foreach (TouchLocation touchLocation in touchCollection)
{
/*
* Utilize the touch location state.
* -TouchLocationState.Invalid is when the location's position is invalid. Could be when a new
* touch location attempts to get the previous location of itself.
* -TouchLocationState.Moved is when the touch location position was updated or pressed in the same position.
* -TouchLocationState.Pressed is when the touch location position is new.
* -TouchLocationState.Released is when the location position was released.
*/
switch (touchLocation.State)
{
case TouchLocationState.Pressed:
this.currentSelected = null;
// see if user touched a component.
foreach (Component current in componentList)
{
if (current.selected(screenToWorld(touchLocation.Position)))
{
this.currentSelected = current;
if (this.doubleTapCountdown > 0)
{
// double tapped.
// this.showRemoveComponentMenu(this.currentSelected);
}
else
{
doubleTapCountdown = DOUBLE_TAP_TICKS; // reset countdown for double-tap to 20 ticks.
}
}
}
// did user tap on empty space?
if (this.currentSelected == null)
{
if (this.doubleTapCountdown > 0)
{
// double tapped.
//this.componentList.AddFirst(new Component(screenToWorld(touchLocation.Position)));
}
else
{
doubleTapCountdown = DOUBLE_TAP_TICKS; // reset countdown for double-tap to 20 ticks.
}
}
XNACS1Base.EchoToBottomStatus("touched " + touchLocation.Position + " (worldspace: + " + screenToWorld(touchLocation.Position) + ")");
break;
case TouchLocationState.Released:
// release current selected.
if (this.currentSelected != null)
this.currentSelected.released();
this.currentSelected = null;
XNACS1Base.EchoToBottomStatus("released");
break;
}
}
while (TouchPanel.IsGestureAvailable)
{
//detect any gestures that were performed
GestureSample gesture = TouchPanel.ReadGesture();
//do code depending on which gesture was detected
switch (gesture.GestureType)
{
case GestureType.FreeDrag:
// drags which the selected image
if (null != currentSelected)
{
currentSelected.dragTo(screenToWorld(gesture.Position));
// move current selected to front of linked list since it is now on "top"
componentList.Remove(currentSelected);
componentList.AddLast(currentSelected);
}
break;
}
}
// update the components.
foreach (Component current in componentList)
{
current.Update();
}
}
private void showRemoveComponentMenu(Component current)
{
//this.currentSelected = null;
this.doubleTapCountdown = 0;
this.currentState = ComponentManagerState.removeComponentMenu;
//this.removeMenu.Show();
}