/// <summary>
/// Updates the Level
/// </summary>
/// <param name="elapsedTime">the time elapsed between this and the previous frame</param>
public void Update(float elapsedTime)
{
if (Paused)
{
// Unpase on space press
if (Keyboard.GetState().IsKeyDown(Keys.Space))
{
Paused = false;
}
}
else
{
// Update the scrolling distance - the distance
// the screen has scrolled past the Player
if (Scrolling)
{
float scrollDelta = elapsedTime * (CurrentMap.Layers[CurrentMap.PlayerLayer].ScrollingSpeed);
scrollDistance += scrollDelta;
ScrollingShooterGame.Game.Player.Position -= new Vector2(0, scrollDelta / 2);
// Scroll all the tile layers
for (int i = 0; i < CurrentMap.LayerCount; i++)
{
CurrentMap.Layers[i].ScrollOffset += elapsedTime * CurrentMap.Layers[i].ScrollingSpeed;
}
}
// Update only the game objects that appear near our scrolling region
Rectangle bounds = new Rectangle(0,
(int)(-scrollDistance / 2) + 300,
CurrentMap.Width * CurrentMap.TileWidth,
16 * CurrentMap.TileHeight);
foreach (uint goID in ScrollingShooterGame.GameObjectManager.QueryRegion(bounds))
{
GameObject go = ScrollingShooterGame.GameObjectManager.GetObject(goID);
go.Update(elapsedTime);
ScrollingShooterGame.GameObjectManager.UpdateGameObject(goID);
}
}
}
