bk_bishe_pi/maze_code/maze_func_flood.cpp

#include<iostream>
#include<string>
#include<vector>
#include"eyebot++.h"
#include"maze_func.h"
#include"maze_parameter.h"
using namespace std;

void flood(int *map, int *copy_map, int *copy_wall)
{
  int num = 0;
  int size_x = mark.size();
  int size_y = mark[0].size();
  map[0][0] = 0;
  copy_map[0][0] = 0;

  do
  {
    for (i = 0; i < size_x; i++)
    { 
      for (j = 0; j < size_y; j++)
      {
        if (! map[i][j] == -1)
        { 
          if (i > 0)
          {
            if (! copy_wall[i][j][1] && map[i-1][j] = -1) //左边格子
            {
              copy_map[i-1][j] = map[i][j] + 1;
              num++;
            }
          }

          if (i < size_x - 1)
          {
            if (! copy_wall[i+1][j][1] && map[i+1][j] = -1) //右边格子
            {
              copy_map[i+1][j] = map[i][j] + 1;
              num++;
            }
          }
          
          if (j > 0)
          {
            if (! copy_wall[i][j][0] && map[i][j-1] = -1)
            {
              copy_map[i][j-1] = map[i][j] + 1;
              num++;
            }
          }

          if (j < size_y - 1)
          {
            if (! copy_wall[i][j+1][0] && map[i][j+1] = -1)
            {
              copy_map[i][j+1] = map[i][j] + 1;
              num++;
            }
          }
        }
      }
    }

    for (i = 0; i < size_x; i++)
    {
      for (j = 0; j < size_y; j++)
      {
        map[i][j] = copy_map[i][j];
      }
    }
  } while (map[target_x][target_y] == -1 && num < (size_x * size_y))
}