protected override void LoadContent()
{
spriteBatch = new SpriteBatch(GraphicsDevice);
Globals.content = Content;
Globals.LoadContent(GraphicsDevice);
Textures.LoadTextures();
Cell.CreateGrid(new Point(-2048, -2048), 400, 400);
Rail.LoadContent();
Level.LoadContent();
Input.LoadInput();
Globals.LoadLevel();
Globals.level.SpawnMapRails();
Globals.player = new Player();
GUI.LoadGUI();
}
public void Teleport(Portal toPortal)
{
position = toPortal.ToVector2();
previousRail.CartStopApproaching();
previousRail = (Rail)cell.item;
cell = Cell.GetCell(position);
moveDirection = MoveDirection.None;
CalculateTravelDirection();
SetFutureCell();
if (cell.item is Rail rl)
{
rl.CartStartApproaching();
}
futureRail.CartStartApproaching();
//previousRail.CartStopApproaching();
}
public Rail Connect(Node other)
{
float x = Location.X - other.Location.X;
x *= x;
float y = Location.Y - other.Location.Y;
y *= y;
Rail rail = new Rail(this, other, (float)Math.Sqrt(x + y));
rails.Add(rail);
other.rails.Add(rail);
nodes.Add(other);
other.nodes.Add(this);
return(rail);
}
public List <Stack <Rail> > Find(Node goal, List <Stack <Rail> > results = null, Stack <Rail> path = null, HashSet <Guid> visited = null)
{
//prevent null exception on new path
path ??= new Stack <Rail>();
visited ??= new HashSet <Guid>();
results ??= new List <Stack <Rail> >();
if (visited.Contains(Guid))
{
return(results);
}
visited.Add(Guid);
//check if goal reached
if (goal.Guid == Guid)
{
//copy current path
int len = path.Count;
Rail[] _path = new Rail[len];
Array.Copy(path.ToArray(), _path, len);
//save current path as solution
results.Add(new Stack <Rail>(_path));
}
else
{
//recursive search on all connected rails
for (int i = 0; i < nodes.Count; i++)
{
if (visited.Contains(rails[i].Guid))
{
continue;
}
visited.Add(rails[i].Guid);
path.Push(rails[i]);
nodes[i].Find(goal, results, path, visited);
visited.Remove(rails[i].Guid);
path.Pop();
}
}
visited.Remove(Guid);
return(results);
}
public void Move(GameTime gameTime)
{
move = Vector2.Zero;
if (moveDirection == MoveDirection.None)
{
Destroy();
}
if (futureRail != null) // move
{
position = Vector2.Lerp(cell.ToVector2(), futureRail.cell.ToVector2(), t);
//velocity = MathHelper.Lerp(startVel, endVel, acceleration * -t);
velocity += acceleration * (float)gameTime.ElapsedGameTime.TotalSeconds * 0.1f;
//velocity *= (float)gameTime.ElapsedGameTime.TotalSeconds;
if (velocity <= endVel) // the cart is no longer travelling
{
velocity = endVel;
}
t += velocity * (float)gameTime.ElapsedGameTime.TotalSeconds * 0.1f;
if (t >= 1)
{
t = 0;
switch (moveDirection)
{
case MoveDirection.None:
break;
case MoveDirection.Up:
rotation = MathHelper.Pi;
break;
case MoveDirection.Down:
rotation = 0;
break;
case MoveDirection.Right:
rotation = -MathHelper.PiOver2;
break;
case MoveDirection.Left:
rotation = MathHelper.PiOver2;
break;
default:
break;
}
previousRail = (Rail)cell.item;
cell = Cell.GetCell(position);
position = futureRail.cell.ToVector2();
if (cell.item is Rail rail)
{
rail.CartPassOver(this);
}
SetFutureCell();
if (previousRail != null)
{
previousRail.CartStopApproaching();
}
if (futureRail != null)
{
futureRail.CartStartApproaching();
}
if (cell.item is Rail rl)
{
rl.CartStartApproaching();
}
if (futureRail == null)
{
CalculateTravelDirection();
SetFutureCell();
if (futureRail != null)
{
futureRail.CartStartApproaching();
}
}
}
}
else
{
CalculateTravelDirection();
SetFutureCell();
if (futureRail == null)
{
Destroy();
}
}
}
public void CalculateTravelDirection()
{
if (cell.item is StraightRail rl)
{
Cell searchCell = Cell.GetCell(cell, 1, 0);
if (searchCell.item is Rail) // track found to the right
{
Rail rail = (Rail)searchCell.item;
if (moveDirection == MoveDirection.None && rail is StraightRail && ((StraightRail)rail).orientation == StraightRail.Orientation.Horizontal && rl.orientation == StraightRail.Orientation.Horizontal)
{
moveDirection = MoveDirection.Right;
if (Globals.debugMessages)
{
Console.WriteLine("Rail found at: Right");
}
return;
}
else if (rail is TurnRail)
{
if (((TurnRail)rail).turnDir == TurnRail.TurnDirection.LeftUp || ((TurnRail)rail).turnDir == TurnRail.TurnDirection.DownLeft)
{
moveDirection = MoveDirection.Right;
return;
}
}
}
searchCell = Cell.GetCell(cell, -1, 0);
if (searchCell.item is Rail) // track found to the left
{
Rail rail = (Rail)searchCell.item;
if (moveDirection == MoveDirection.None && rail is StraightRail && ((StraightRail)rail).orientation == StraightRail.Orientation.Horizontal && rl.orientation == StraightRail.Orientation.Horizontal)
{
moveDirection = MoveDirection.Left;
if (Globals.debugMessages)
{
Console.WriteLine("Rail found at: Left");
}
return;
}
else if (rail is TurnRail)
{
if (((TurnRail)rail).turnDir == TurnRail.TurnDirection.RightUp || ((TurnRail)rail).turnDir == TurnRail.TurnDirection.DownRight)
{
moveDirection = MoveDirection.Left;
return;
}
}
}
searchCell = Cell.GetCell(cell, 0, -1);
if (searchCell.item is Rail) // track found up top
{
Rail rail = (Rail)searchCell.item;
if (moveDirection == MoveDirection.None && rail is StraightRail && ((StraightRail)rail).orientation == StraightRail.Orientation.Vertical && rl.orientation == StraightRail.Orientation.Vertical)
{
moveDirection = MoveDirection.Up;
if (Globals.debugMessages)
{
Console.WriteLine("Rail found at: Top");
}
return;
}
else if (rail is TurnRail)
{
if (((TurnRail)rail).turnDir == TurnRail.TurnDirection.DownRight || ((TurnRail)rail).turnDir == TurnRail.TurnDirection.DownLeft)
{
moveDirection = MoveDirection.Up;
return;
}
}
}
searchCell = Cell.GetCell(cell, 0, 1);
if (searchCell.item is Rail) // track found at bottom
{
Rail rail = (Rail)searchCell.item;
if (moveDirection == MoveDirection.None && rail is StraightRail && ((StraightRail)rail).orientation == StraightRail.Orientation.Vertical && rl.orientation == StraightRail.Orientation.Vertical)
{
moveDirection = MoveDirection.Down;
if (Globals.debugMessages)
{
Console.WriteLine("Rail found at: Bottom");
}
return;
}
else if (rail is TurnRail)
{
if (((TurnRail)rail).turnDir == TurnRail.TurnDirection.LeftUp || ((TurnRail)rail).turnDir == TurnRail.TurnDirection.RightUp)
{
moveDirection = MoveDirection.Down;
return;
}
}
}
moveDirection = MoveDirection.None;
if (Globals.debugMessages)
{
Console.WriteLine("Rail not found");
}
}
}
public void SetFutureCell()
{
Cell newCell = null;
switch (moveDirection)
{
case MoveDirection.None:
break;
case MoveDirection.Up:
newCell = Cell.GetCell(cell, 0, -1);
if (newCell.item is Rail) // useless?
{
if (newCell.item is TurnRail rl) // the track is a turn
{
switch (rl.turnDir)
{
case TurnRail.TurnDirection.DownRight:
moveDirection = MoveDirection.Right;
break;
case TurnRail.TurnDirection.DownLeft:
moveDirection = MoveDirection.Left;
break;
default:
break;
}
}
else if (((StraightRail)newCell.item).orientation != StraightRail.Orientation.Vertical)
{
newCell = null;
}
}
break;
case MoveDirection.Down:
newCell = Cell.GetCell(cell, 0, 1);
if (newCell.item is Rail)
{
if (newCell.item is TurnRail rl)
{
switch (rl.turnDir)
{
case TurnRail.TurnDirection.RightUp:
moveDirection = MoveDirection.Right;
break;
case TurnRail.TurnDirection.LeftUp:
moveDirection = MoveDirection.Left;
break;
default:
break;
}
}
else if (((StraightRail)newCell.item).orientation != StraightRail.Orientation.Vertical)
{
newCell = null;
}
}
break;
case MoveDirection.Right:
newCell = Cell.GetCell(cell, 1, 0);
if (newCell.item is Rail)
{
if (newCell.item is TurnRail rl)
{
switch (rl.turnDir)
{
case TurnRail.TurnDirection.LeftUp:
moveDirection = MoveDirection.Up;
break;
case TurnRail.TurnDirection.DownLeft:
moveDirection = MoveDirection.Down;
break;
default:
break;
}
}
else if (((StraightRail)newCell.item).orientation != StraightRail.Orientation.Horizontal)
{
newCell = null;
}
}
break;
case MoveDirection.Left:
newCell = Cell.GetCell(cell, -1, 0);
if (newCell.item is Rail)
{
if (newCell.item is TurnRail rl)
{
switch (rl.turnDir)
{
case TurnRail.TurnDirection.RightUp:
moveDirection = MoveDirection.Up;
break;
case TurnRail.TurnDirection.DownRight:
moveDirection = MoveDirection.Down;
break;
default:
break;
}
}
else if (((StraightRail)newCell.item).orientation != StraightRail.Orientation.Horizontal)
{
newCell = null;
}
}
break;
default:
break;
}
//if (newCell == null)
//{
// futureRail = null;
// return;
//}
futureRail = newCell != null && newCell.item != null && newCell.item is Rail ? (Rail)newCell.item : null;
}
public void Connect(Node a, Node b)
{
Rail rail = a.Connect(b);
Rails.Add(rail.Guid, rail);
}