Tetris/Tetrominos/TetrominoTypeI.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 TetrominoTypeI : Tetromino
    {
        /// <summary>
        /// 该方块只有两种状态，向上和向左，旋转方块时在这两种状态中切换
        /// </summary>
        public TetrominoTypeI() : base(Brushes.Green, TetrominoType.TypeI)
        {
            this.Blocks = new Block[4];
            Blocks[0] = new Block(0, 0, Color);
            Blocks[1] = new Block(1, 0, Color);
            Blocks[2] = new Block(2, 0, Color);
            Blocks[3] = new Block(3, 0, Color);
        }

        
        public override void RotateClockwise()
        {
            switch (this.Toward)
            {
                case Towards.Up:
                    Blocks[0].MoveTo(1, 1);
                    Blocks[2].MoveTo(-1, -1);
                    Blocks[3].MoveTo(-2, -2);
                    this.Toward = Towards.Left;
                    break;
                case Towards.Left:
                    Blocks[0].MoveTo(-1, -1);
                    Blocks[2].MoveTo(1, 1);
                    Blocks[3].MoveTo(2, 2);
                    this.Toward = Towards.Up;
                    break;
            }
        }

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

        public override void MoveToCenter()
        {
            for(int i = 0; i < 4; i++)
            {
                MoveUp();
                MoveRight();
            }
        }
    }
}