请教一个俄罗斯方块的问题

在头文件中的部分定义:
/*各种不同形状方块的接触面，接触面是指这样的小方块：它下面如果有另外的方块则表示此方块已到底。此数组记录了这些接触面在当前方块动态位置数组中的元素号*/
int InterFace[74][4];
/*用于标志方块状态的数组，大小由横格与竖格数据决定，为1表示该方块显示，或者不显示画形状只需要修改数组中相应元素的状态值即可由时钟控制，定时在OnPaint函数中根据数组画方块*/
int GameStatus[100][100];
//赋初值
for (i=0;i<100;i++)
for (j=0;j<100;j++)
GameStatus[i][j]=0;

//各种形状方块的接触面数据，参见设计书的接触面表格, 如果某种形状的方块没有4个接触面，则后面的数据填-1
for (i=0;i<74;i++)
for (j=0;j<4;j++)
InterFace[i][j] = -1;

InterFace[1][0] = 3;

InterFace[11][0]=0;InterFace[11][1]=1;InterFace[11][2]=2;InterFace[11][3]=3;

InterFace[2][0] = 1; InterFace[2][1] = 3;

InterFace[3][0] = 0; InterFace[3][1] = 2; InterFace[3][2] = 3;

InterFace[31][0] = 2; InterFace[31][1] = 3;

InterFace[32][0] = 0; InterFace[32][1] = 2; InterFace[32][2] = 3;

InterFace[33][0] = 0; InterFace[33][1] = 3;

InterFace[4][0] = 1; InterFace[4][1] = 3;

InterFace[41][0] = 0; InterFace[41][1] = 2; InterFace[41][2] = 3;

InterFace[5][0] = 1; InterFace[5][1] = 3;

InterFace[51][0] = 0; InterFace[51][1] = 2; InterFace[51][2] = 3;

InterFace[6][0] = 0; InterFace[6][1] = 3;

InterFace[61][0] = 1; InterFace[61][1] = 2; InterFace[61][2] = 3;

InterFace[62][0] = 2; InterFace[62][1] = 3;

InterFace[63][0] = 0; InterFace[63][1] = 1; InterFace[63][2] = 3;

InterFace[7][0] = 2; InterFace[7][1] = 3;

InterFace[71][0] = 1; InterFace[71][1] = 2; InterFace[71][2] = 3;

InterFace[72][0] = 0; InterFace[72][1] = 3;

InterFace[73][0] = 0; InterFace[73][1] = 1; InterFace[73][2] = 3;

}

上面这么一段让人费解的代码是什么意思啊?