/// <summary>
/// This function determines which tiles are visible on the screen,
/// given the current camera position
/// </summary>
private List <Scene2DNode> GetVisibleTiles()
{
List <Scene2DNode> visibleTileList = new List <Scene2DNode>();
Tile tileReference;
for (int y = 0; y < Height; y++)
{
for (int x = 0; x < Width; x++)
{
tileReference = tileGrid[x, y];
if (tileReference != null)
{
if (tileReference.Position.X >= game.camera.Position.X - tileReference.Width &&
tileReference.Position.X <= game.camera.Position.X + game.GraphicsDevice.Viewport.Width &&
tileReference.Position.Y >= game.camera.Position.Y - tileReference.Height &&
tileReference.Position.Y <= game.camera.Position.Y + game.GraphicsDevice.Viewport.Height)
{
Scene2DNode node = new Scene2DNode(tileReference.Texture, tileReference.Position);
visibleTileList.Add(node);
}
}
}
}
return(visibleTileList);
}
/// <summary>
/// Adds the sprite texture to the scene
/// </summary>
/// <returns>A <see cref="Scene2DNode"/> to use in the scene</returns>
public Scene2DNode ToSceneGraphNode()
{
Scene2DNode returnValue = new Scene2DNode(texture, Position);
return(returnValue);
}
