public virtual void Initialize()
{
Gravity = new GravityHandler(GravitationalConstant, GravityDirection.Value, AirDensity);
Collision = new CollisionHandler(this);
// register first event
EventClock.AddGameEvent(new EventClock.GameEvent(Update), TimeSpan.Zero);
}
public virtual void Update(GameTime gameTime)
{
InputHandler.UpdateInputs();
EventClock.ProcessGameEvents(gameTime);
//for (int i = registeredGameArea.Count - 1; i >= 0; i--)
//{
// registeredGameArea[i].Update();
//}
}
public virtual void Update(GameTime gameTime)
{
// readjust objects according to viewport settings
int pinnedOffsetX = 0;
int pinnedOffsetY = 0;
if (pinnedGameObjectActive &&
pinnedGameObject != null)
{
int originalX = pinnedGameObject.PositionRectangle.X;
int originalY = pinnedGameObject.PositionRectangle.Y;
// gravity and update
Gravity.Apply(gameTime);
pinnedGameObject.Update(gameTime);
// check for unpinning
pinnedGameObjectActive = (XScroll && !((pinnedObjectAbsolutePositionX <= ViewportWidthOneHalf || pinnedObjectAbsolutePositionX + pinnedGameObject.Width >= TotalWidth - 100)));
// calculate offset
// put the object back to its original position
if (XScroll)
{
pinnedOffsetX = (pinnedGameObject.PositionRectangle.X - originalX) * -1;
if (!pinnedGameObjectActive)
{
// adjust offset
}
pinnedGameObject.X += pinnedOffsetX;
pinnedObjectAbsolutePositionX -= pinnedOffsetX;
}
if (YScroll)
{
pinnedOffsetY = (pinnedGameObject.PositionRectangle.Y - originalY) * -1;
if (!pinnedGameObjectActive)
{
// adjust offset
}
pinnedGameObject.Y += pinnedOffsetY;
pinnedObjectAbsolutePositionY -= pinnedOffsetY;
}
}
else
{
// gravity
Gravity.Apply(gameTime);
// check for pinning
if (pinnedGameObject != null)
{
// check if we need to pin or unpin the player
pinnedGameObjectActive = (XScroll && (pinnedGameObject.PositionRectangle.X > 100 && pinnedGameObject.PositionRectangle.X + pinnedGameObject.Width < 200));
if (pinnedGameObjectActive)
{
if (pinnedObjectAbsolutePositionX == 0)
{
pinnedObjectAbsolutePositionX = pinnedGameObject.PositionRectangle.X;
}
if (pinnedObjectAbsolutePositionY == 0)
{
pinnedObjectAbsolutePositionY = pinnedGameObject.PositionRectangle.Y;
}
}
}
}
// move objects / user input
for (int i = activeObjects.Count - 1; i >= 0; i--)
{
if (pinnedGameObject == null || !pinnedGameObjectActive)
{
activeObjects[i].Update(gameTime);
}
else if (pinnedGameObject != activeObjects[i])
{
// if an object is pinned, don't process it
activeObjects[i].Update(gameTime);
if (XScroll)
{
activeObjects[i].X += pinnedOffsetX;
}
if (YScroll)
{
activeObjects[i].Y += pinnedOffsetY;
}
}
// GameArea Edge processing
}
// handle collisions
Collision.HandleCollisions();
// background processing
// register next update
EventClock.AddGameEvent(new EventClock.GameEvent(Update), NextFrameTimeSpan);
}
