public string ShortPath() //最短路径
{
move[0].x = 0; move[0].y = +1;
move[1].x = +1; move[1].y = +1;
move[2].x = +1; move[2].y = 0;
move[3].x = +1; move[3].y = -1;
move[4].x = 0; move[4].y = -1;
move[5].x = -1; move[5].y = -1;
move[6].x = -1; move[6].y = 0;
move[7].x = -1; move[7].y = +1; //初始化位置坐标增量
sq = new CQueue <sqtype>(); //创建队列
if (rows == 0 || cols == 0)
{
return("");
}
sqtype temp = new sqtype();
temp.x = temp.y = 1; temp.pre = 0; sq.In(temp); Setelems(1, 1, -1); //起点进队
while (!sq.IsEmpty()) //队不空时循环
{
temp = sq.Getfront(); int x = temp.x; int y = temp.y; //取队头
for (int k = 0; k < 8; k += 2) //查找八个方向
{
int i = x + move[k].x; int j = y + move[k].y;
if (Getelems(i, j) == 0) //路通
{
temp.x = i;
temp.y = j;
temp.pre = sq.Front() + 1; //前一个结点
sq.In(temp); //进队
Setelems(i, j, -1); //走过的设置为-1
}
if (i == rows && j == cols)
{
int j1 = sq.Rear();
int len = 0;
for (int i1 = sq.Rear(); i1 >= 1; i1--)
{
temp = sq.Getdata(i1);
if (i1 == j1)
{
Setelems(temp.x, temp.y, -1);
j1 = temp.pre;
len++;
}
else
{
Setelems(temp.x, temp.y, 0);
}
}
return("");
}
}
sq.Out(); //出队
}
return("");
}
private void draw()
{
myg.FillRectangle(new SolidBrush(Color.White), 0, 0, pictureBox1.Width, pictureBox1.Height);
Image image0 = System.Drawing.Image.FromFile("../../tile.bmp");
Image image1 = System.Drawing.Image.FromFile("../../ball0.bmp");
//image0对象的宽度和高度
int pw = image0.Width;
int ph = image0.Height;
if (flag == false)
{
for (int i = 0; i < m_maze3.Rows + 2; i++)
{
for (int j = 0; j < m_maze3.Cols + 2; j++)
{
Rectangle rt1 = new Rectangle(0, 0, pw, ph);
Rectangle rt2 = new Rectangle(j * (pw), i * (ph), pw, ph);
if (mouseClick.X >= rt2.X && mouseClick.X <= rt2.X + pw && mouseClick.Y >= rt2.Y && mouseClick.Y <= rt2.Y + ph)
{
if (m_maze3.Getelems(i, j) == -1)
{
m_maze3.Setelems(i, j, 1);
}
else
{
m_maze3.Setelems(i, j, (m_maze3.Getelems(i, j) + 1) % 2);
}
break;
}
}
}
}
else
{
for (int i = 0; i < m_maze3.Rows + 2; i++)
{
for (int j = 0; j < m_maze3.Cols + 2; j++)
{
Rectangle rt1 = new Rectangle(0, 0, pw, ph);
Rectangle rt2 = new Rectangle(j * (pw), i * (ph), pw, ph);
if (mouseClick.X >= rt2.X && mouseClick.X <= rt2.X + pw && mouseClick.Y >= rt2.Y && mouseClick.Y <= rt2.Y + ph)
{
moved t = new moved();
t.initmoved(i, j);
if (startORend == false)
{
m_maze3.Start = t;
}
else
{
m_maze3.End = t;
}
startORend = !startORend;
}
}
}
}
//m_maze3.ShortPath2();
//定义矩形区域
for (int i = 0; i < m_maze3.Rows + 2; i++)
{
for (int j = 0; j < m_maze3.Cols + 2; j++)
{
Rectangle rt1 = new Rectangle(0, 0, pw, ph);
Rectangle rt2 = new Rectangle(j * (pw), i * (ph), pw, ph);
if (m_maze3.Getelems(i, j) == 1)
{
myg.DrawImage(image0, rt2, rt1, GraphicsUnit.Pixel);
}
//else if(m_maze3.Getelems(i,j)==-1)
//{
// myg.DrawImage(image1,rt2,rt1,GraphicsUnit.Pixel);
//}
}
}
Image startImage = System.Drawing.Image.FromFile("../../p1.bmp");
Image endImage = System.Drawing.Image.FromFile("../../p2.bmp");
Rectangle rt_1 = new Rectangle((pw) * m_maze3.Start.y, (ph) * m_maze3.Start.x, pw, ph);
Rectangle rt_2 = new Rectangle(0, 0, pw, ph);
myg.DrawImage(startImage, rt_1, rt_2, GraphicsUnit.Pixel);
Rectangle rt_3 = new Rectangle((pw) * m_maze3.End.y, (ph) * m_maze3.End.x, pw, ph);
myg.DrawImage(endImage, rt_3, rt_2, GraphicsUnit.Pixel);
//从image0上根据矩形rt1取出来的部分图像，贴到由rt2确定的矩形区域上
for (int i = 0; i < m_maze3.Rows + 2; i++)
{
for (int j = 0; j < m_maze3.Cols + 2; j++)
{
if (m_maze3.Getelems(i, j) == -1)
{
m_maze3.Setelems(i, j, 0);
}
}
}
int i_x = m_maze3.Start.x; int j_y = m_maze3.Start.y;
CSeqStack <sqtype> m_cstack = new CSeqStack <sqtype>();
moved[] move = new moved[4];
move[0].x = 0; move[0].y = +1;
move[1].x = +1; move[1].y = 0;
move[2].x = 0; move[2].y = -1;
move[3].x = -1; move[3].y = 0;
sqtype temp = new sqtype();
temp.x = i_x; temp.y = j_y; temp.pre = 0;
m_cstack.Push(temp);
while (!(i_x == m_maze3.End.x && j_y == m_maze3.End.y))
{
bool flag_1 = false;
for (int k = 0; k < 4; k++)
{
int i = i_x + move[k].x;
int j = j_y + move[k].y;
if (m_maze3.Getelems(i, j) == 0)
{
i_x = i; j_y = j;
temp.x = i_x; temp.y = j_y;
m_cstack.Push(temp);
Rectangle rt1 = new Rectangle(0, 0, pw, ph);
Rectangle rt2 = new Rectangle(j_y * (pw), i_x * (ph), pw, ph);
myg.DrawImage(image1, rt2, rt1, GraphicsUnit.Pixel);
m_maze3.Setelems(i, j, -1);
System.Threading.Thread.Sleep(100);
flag_1 = true;
break;
}
}
if (flag_1 == false)
{
sqtype temp1 = m_cstack.Pop();
Rectangle rt1 = new Rectangle(pw * temp1.y, ph * temp1.x, pw, ph);
myg.FillRectangle(new SolidBrush(Color.White), rt1);
System.Threading.Thread.Sleep(100);
i_x = m_cstack.Gettop().x; j_y = m_cstack.Gettop().y;
}
}
//m_maze3.ShortPath();
}