private void updateRemoveComponentMenu()
{
bool finished = removeMenu.Update();
if (finished)
{
// did user click remove button?
if (this.removeMenu.RemoveButtonState())
{
// remove component from draw-set and list.
this.addMenu.ComponentRemovedFromStage(this.currentSelected.myComponentType());
this.currentSelected.RemoveFromAutoDrawSet();
componentList.Remove(this.currentSelected);
}
this.hideRemoveComponentMenu();
this.currentSelected = null;
}
}
private void updateAddComponentMenu()
{
bool finished = addMenu.Update();
if (finished)
{
// do we need to add a component?
Component newComponent = this.addMenu.getNewComponent();
if (newComponent != null)
{
this.componentList.AddLast(newComponent);
}
this.hideAddComponentMenu();
this.currentSelected = null;
}
}
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;
// is this a double tap?
float tapDist = Math.Abs(Vector2.Distance(lastTapLocation, touchLocation.Position));
if (this.doubleTapCountdown > 0 && tapDist < MAX_DOUBLE_TAP_DISTANCE)
{
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)
{
// is this a double tap?
float tapDist = Math.Abs(Vector2.Distance(lastTapLocation, touchLocation.Position));
if (this.doubleTapCountdown > 0 && tapDist < MAX_DOUBLE_TAP_DISTANCE)
{
this.showAddComponentMenu();
}
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;
}
// update lastTapLocation
lastTapLocation = touchLocation.Position;
}
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.doubleTapCountdown = 0;
this.currentState = ComponentManagerState.removeComponentMenu;
this.removeMenu.Show();
}