internal Ghost Move(Game game, IReadOnlyGameState gameState)
{
if (Edible && gameState.TickCounter % 2 == 1)
{
return(this);
}
if (GhostWalkingOutOfGhostHouse(game))
{
if (game.StartingCoins.Count - game.Coins.Count >= NumberOfCoinsRequiredToExitHouse)
{
var outDirection = Direction.Up;
var target = game.Doors.First().Above;
if (target.X < Location.X)
{
outDirection = Direction.Left;
}
else if (target.X > Location.X)
{
outDirection = Direction.Right;
}
var newGhostLocation = Location + outDirection;
return(WithNewLocationAndDirection(newGhostLocation, outDirection));
}
else
{
return(this);
}
}
var nextDirection = CurrentStrategy.GetNextDirection(this, game);
if (nextDirection is Direction newDirection)
{
var newGhostLocation = Location + newDirection;
if (game.Portals.TryGetValue(newGhostLocation, out var otherEndOfThePortal))
{
newGhostLocation = otherEndOfThePortal + newDirection;
}
if (game.GhostHouse.Contains(newGhostLocation))
{
return(WithNewLocationAndDirection(newGhostLocation, newDirection)
.WithNewStatusAndStrategy(GhostStatus.Alive, ChaseStrategy));
}
return(WithNewLocationAndDirection(newGhostLocation, newDirection));
}
else
{
return(this);
}
}
public Ghost Move(Game game)
{
var newDirection = CurrentStrategy.GetNextDirection(this, game);
var newLocation = newDirection switch
{
Direction.Up => Location.Above,
Direction.Down => Location.Below,
Direction.Left => Location.Left,
Direction.Right => Location.Right,
_ => Location
};
return(new Ghost(Name, Home, newLocation, newDirection ?? Direction, ScatterTarget, Strategy, CurrentStrategy, Edible));
}
