Tetris/Tetrominos/TetrominoTypeZ.cs

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using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Tetris.Tetrominos
{
    class TetrominoTypeZ : Tetromino
    {
        /// <summary>
        /// 只有两种方向，向左和向上，默认向左
        /// </summary>
        public TetrominoTypeZ() :base(Brushes.Yellow, TetrominoType.TypeZ)
        {
            Blocks = new Block[4];
            Blocks[0] = new Block(0, 0, Color);
            Blocks[1] = new Block(0, 1, Color);
            Blocks[2] = new Block(1, 1, Color);
            Blocks[3] = new Block(1, 2, Color);
            Toward = Towards.Left;
        }
        public override void RotateClockwise()
        {
            switch (this.Toward)
            {
                case Towards.Left:
                    Blocks[0].MoveTo(2, 0);
                    Blocks[1].MoveTo(1, 1);
                    Blocks[3].MoveTo(-1, 1);
                    this.Toward = Towards.Up;
                    break;
                case Towards.Up:
                    Blocks[0].MoveTo(-2, 0);
                    Blocks[1].MoveTo(-1, -1);
                    Blocks[3].MoveTo(1, -1);
                    this.Toward = Towards.Left;
                    break;
            }
        }

        public override void RotateCounterclockwise()
        {
            RotateClockwise();
        }

        public override void MoveToCenter()
        {
            MoveUp();
            MoveUp();
            for (int i = 0; i < 3; i++)
            {
                MoveRight();
            }
        }
    }
}