俄罗斯方块之六——窗体设计

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6.1 KeyDown事件，当方块不可以下落的时候，我们要处理游戏等级、层数、分数等数据还要把将方块放入二维数组中、下个方块的创建、判断是否结束。
6.1.1 创建新的方块，方块类型是随机创建的，增加一个枚举类BlockType，存放方块的所有类型。通过简单工厂得到父类。每种方块的中心颜色和周围以颜色可以自定义。由于画板对象不同，位置不同，需要传入参数。

Code:

public class BlockFactory
{
public static Block CreatBlock(Point location,Graphics g)
{
Type t = typeof(BlockType);//获取BlockType类的信息
string[] blocks = Enum.GetNames(t);//得到枚举的所有值
int num = Game.Random.Next(blocks.Length);
BlockType bt = (BlockType)num;
Block block = null;
switch (bt)
{
case BlockType.BlockF:
block = new BlockF();
block.SurroundColor = new Color[] { Color.LightGreen };
block.CenterColor = Color.Red;
break;
case BlockType.BlockJ:
block = new BlockJ();
block.SurroundColor = new Color[] { Color.SkyBlue };
block.CenterColor = Color.Orange;
break;
case BlockType.BlockL:
block = new BlockL();
block.SurroundColor = new Color[] { Color.LimeGreen };
block.CenterColor = Color.Pink;
break;
case BlockType.BlockZ:
block = new BlockZ();
block.SurroundColor = new Color[] { Color.Red };
block.CenterColor = Color.MediumTurquoise;
break;
case BlockType.BlockS:
block = new BlockS();
block.SurroundColor = new Color[] { Color.Pink };
block.CenterColor = Color.Green;
break;
case BlockType.BlockN:
block = new BlockN();
block.SurroundColor = new Color[] { Color.Yellow };
block.CenterColor = Color.Blue;
break;
case BlockType.BlockT:
block = new BlockT();
block.SurroundColor = new Color[] { Color.Blue };
block.CenterColor = Color.Yellow;
break;
case BlockType.VBlockT:
block = new VBlockT();
block.SurroundColor = new Color[] { Color.Blue };
block.CenterColor = Color.Wheat;
break;
case BlockType.SingelBlock:
block = new SingelBlock();
block.SurroundColor = new Color[] { Color.Yellow };
block.CenterColor = Color.Wheat;
break;
}
block.Location = location;
block.InitDirection();
block.ShowBlock(g);
return block;
}

6.1.2 将落下的方块放入二维数组里。并得到落下时最下面的小方块所在的行，用于计算普通分数。

Code:

//得到每个小方块最下面位置所在的行,并将形状的每个方块放置到游戏方块数组中
List<int> rows = new List<int>();
foreach (Square square in currBlock.Squares)
{
int row = square.Location.Y / Game.Side;
int col = square.Location.X / Game.Side;
Game.SquareArray[row, col] = square;
rows.Add(row);
}
int minRow = rows.Max();

6.1.3 处理数据并显示到控件上

Code:

//总行数
int count = Game.CheckLines();
Game.LayerCount += count;
//游戏级别
if (Game.LayerCount <= 150) Game.Level = Game.LayerCount / 5 + 1;
else Game.Level = 30 + (Game.LayerCount - 150) / 50;
//游戏级别增加则速度加0.2（1）倍
tmrDown.Interval = 1000 / (Game.Level + 1);
//游戏总分数
Game.Score += Game.CheckScore(count);
//方块落下去根据游戏等级和方块最下面部分所在行 *5得到普通分
Game.Score += (Game.Rows - minRow) * Game.Level * 3;
//空间显示
lblLevel.Text = Game.Level.ToString();
lblLines.Text = Game.LayerCount.ToString();
lblPoint.Text = Game.Score.ToString();

6.1.4 判断是否结束，然后创建新方块

Code:

/// <summary>
/// 创建新方块
/// </summary>
private void CreateNewBlock()
{
//下个方块赋给当前方块
currBlock = nextBlock;
//将每个小方块的初始位置改变下
foreach (Square sq in currBlock.Squares) sq.Location = new Point(sq.Location.X + 40, sq.Location.Y);
currBlock.ShowBlock();
//判断是否失败
if (Game.CheckGameOver(currBlock))
{
tmrDown.Stop();
MessageBox.Show("Game Over");
}
//创建新方块，下一个方块
picNext.Refresh();
nextBlock = BlockFactory.CreatBlock(new Point(40, 20), Graphics.FromHwnd(picNext.Handle));
}

6.1.5 将6.1.2-6.1.4全部写在一个BlockDown()方法里。
6.1.6 在KeyDown时间里判断移动方向，调用相应的方法。
6.2 计时器事件tmrDown。调用BlockDown()方法。
6.3 开始事件，创建当前方块对象和下一个方块对象，计时器开。
6.4 暂停事件。开关设置，和计时器开关设置。
整个俄罗斯方块项目基本功能都实现了。