public PlayerState(
int number, string name, ColorState color,
PositionState position, DirectionState direction,
bool alive)
{
this.Number = number;
this.Name = name;
this.Color = color;
this.Position = position;
this.Direction = direction;
this.Alive = alive;
}
/// <summary>
/// 与えられた位置から与えられた方向に進んだ次の位置を求める。
/// 例えば (1, 2), Right を渡すと (2, 2) を返す。
/// </summary>
/// <param name="pos">位置</param>
/// <param name="dir">向き</param>
/// <returns>次の位置</returns>
public static PositionState GetNextPosition(PositionState pos, DirectionState dir)
{
switch (dir.Value)
{
case Direction.Right: return new PositionState(pos.X + 1, pos.Y);
case Direction.RightUp: return new PositionState(pos.X + 1, pos.Y - 1);
case Direction.Up: return new PositionState(pos.X, pos.Y - 1);
case Direction.LeftUp: return new PositionState(pos.X - 1, pos.Y - 1);
case Direction.Left: return new PositionState(pos.X - 1, pos.Y);
case Direction.LeftDown: return new PositionState(pos.X - 1, pos.Y + 1);
case Direction.Down: return new PositionState(pos.X, pos.Y + 1);
case Direction.RightDown: return new PositionState(pos.X + 1, pos.Y + 1);
}
throw new ArgumentException();
}
public InitialPlayerState(PositionState position, DirectionState direction)
{
this.Position = position;
this.Direction = direction;
}
public bool Equals(PositionState other)
{
if ((object)other == null) return false;
return this.X.Equals(other.X) && this.Y.Equals(other.Y);
}
/// <summary>
/// 与えられた位置がフィールド内か否かを調べる。
/// </summary>
/// <param name="field">フィールド</param>
/// <param name="pos">位置</param>
/// <returns>位置がフィールド内なら true 、そうでなければ false</returns>
public static bool IsIn(FieldState field, PositionState pos)
{
return pos.X >= 0 && pos.Y >= 0 && pos.X < field.Width && pos.Y < field.Height;
}
private void stepMovePlayer(int playerNumber, Action action)
{
var player = State.Players[playerNumber];
var dir = player.Direction.Value;
if (player.Dead)
{
return;
}
if (action == Action.Right)
{
switch (dir)
{
case Direction.Right: dir = Direction.RightDown; break;
case Direction.RightUp: dir = Direction.Right; break;
case Direction.Up: dir = Direction.RightUp; break;
case Direction.LeftUp: dir = Direction.Up; break;
case Direction.Left: dir = Direction.LeftUp; break;
case Direction.LeftDown: dir = Direction.Left; break;
case Direction.Down: dir = Direction.LeftDown; break;
case Direction.RightDown: dir = Direction.Down; break;
}
}
else if (action == Action.Left)
{
switch (dir)
{
case Direction.Right: dir = Direction.RightUp; break;
case Direction.RightUp: dir = Direction.Up; break;
case Direction.Up: dir = Direction.LeftUp; break;
case Direction.LeftUp: dir = Direction.Left; break;
case Direction.Left: dir = Direction.LeftDown; break;
case Direction.LeftDown: dir = Direction.Down; break;
case Direction.Down: dir = Direction.RightDown; break;
case Direction.RightDown: dir = Direction.Right; break;
}
}
var pos = player.Position;
switch (dir)
{
case Direction.Right: pos = new PositionState(pos.X + 1, pos.Y); break;
case Direction.RightUp: pos = new PositionState(pos.X + 1, pos.Y - 1); break;
case Direction.Up: pos = new PositionState(pos.X, pos.Y - 1); break;
case Direction.LeftUp: pos = new PositionState(pos.X - 1, pos.Y - 1); break;
case Direction.Left: pos = new PositionState(pos.X - 1, pos.Y); break;
case Direction.LeftDown: pos = new PositionState(pos.X - 1, pos.Y + 1); break;
case Direction.Down: pos = new PositionState(pos.X, pos.Y + 1); break;
case Direction.RightDown: pos = new PositionState(pos.X + 1, pos.Y + 1); break;
}
var players = State.Players.ToList();
players[playerNumber] = new PlayerState(
player.Number, player.Name, player.Color,
pos, new DirectionState(dir), player.Alive);
State = new GameState(State.Field, players.AsReadOnly());
}
private bool isInField(PositionState pos)
{
return pos.X >= 0 && pos.Y >= 0 && pos.X < State.Field.Width && pos.Y < State.Field.Height;
}
