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AI.h
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#include <time.h>
#include <stdlib.h>
/*AI code*/
int AI(int x, int y, char lines[2*x+1][2*x+1], int moves_history[x*(x+1)*2][3], int counter, int roww, int columnn, int gametype)
{
int rowno = 0, columnno = 0, prohibited[x*(x+1)*2][2], p_counter = 0, found = 0, dim = 0, row, column;
void c_prohibited(int r, int c)
{
prohibited[p_counter][0] = r;
prohibited[p_counter][1] = c;
p_counter++;
}
int check_prohibited(int r, int c)
{
for (int i = 0; i < p_counter; i++)
{
if (prohibited[i][0] == r && prohibited[i][1] == c)
{
return 1;
}
}
return 0;
}
void c_move(int r, int c)
{
rowno = r;
columnno = c;
row = rowno;
column = columnno;
dim = row * 100 + column;
}
row = roww;
column = columnn;
/*AI logic in case of hard*/
if (gametype == 1)
{
/*check for a box to complete*/
for (int i = 1; i < x+x+1; i+=2)
{
for (int j = 1; j < y+y+1; j+=2)
{
if (lines[i][j-1] == -70 && lines[i][j+1] == -70 && lines[i-1][j] == -51 && !(lines[i+1][j] == -51))
{
c_move(i+1,j);
return dim;
}
else if (lines[i][j-1] == -70 && lines[i][j+1] == -70 && !(lines[i-1][j] == -51) && lines[i+1][j] == -51)
{
c_move(i-1,j);
return dim;
}
else if (lines[i][j-1] == -70 && !(lines[i][j+1] == -70) && lines[i-1][j] == -51 && lines[i+1][j] == -51)
{
c_move(i,j+1);
return dim;
}
else if (!(lines[i][j-1] == -70) && lines[i][j+1] == -70 && lines[i-1][j] == -51 && lines[i+1][j] == -51)
{
c_move(i,j-1);
return dim;
}
}
}
/*exclude moves that give the user advantage*/
for (int i = 1; i < x+x+1; i+=2)
{
for (int j = 1; j < y+y+1; j+=2)
{
if (!(lines[i][j-1] == -70) && !(lines[i][j+1] == -70) && lines[i-1][j] == -51 && lines[i+1][j] == -51)
{
c_prohibited(i, j-1);
c_prohibited(i, j+1);
}
else if (!(lines[i][j-1] == -70) && lines[i][j+1] == -70 && !(lines[i-1][j] == -51) && lines[i+1][j] == -51)
{
c_prohibited(i, j-1);
c_prohibited(i-1, j);
}
else if (!(lines[i][j-1] == -70) && lines[i][j+1] == -70 && lines[i-1][j] == -51 && !(lines[i+1][j] == -51))
{
c_prohibited(i, j-1);
c_prohibited(i+1, j);
}
else if (lines[i][j-1] == -70 && !(lines[i][j+1] == -70) && !(lines[i-1][j] == -51) && lines[i+1][j] == -51)
{
c_prohibited(i, j+1);
c_prohibited(i-1, j);
}
else if (lines[i][j-1] == -70 && !(lines[i][j+1] == -70) && lines[i-1][j] == -51 && !(lines[i+1][j] == -51))
{
c_prohibited(i, j+1);
c_prohibited(i+1, j);
}
else if (lines[i][j-1] == -70 && lines[i][j+1] == -70 && !(lines[i-1][j] == -51) && !(lines[i+1][j] == -51))
{
c_prohibited(i-1, j);
c_prohibited(i+1, j);
}
}
}
/*make a move in one line made box*/
for (int i = 1; i < x+x+1; i+=2)
{
for (int j = 1; j < y+y+1; j+=2)
{
if (lines[i][j-1] == -70 && !(lines[i][j+1] == -70) && !(lines[i-1][j] == -51) && !(lines[i+1][j] == -51))
{
if (check_prohibited(i, j+1) == 0)
{
c_move(i, j+1);
return dim;
}
else if (check_prohibited(i-1, j) == 0)
{
c_move(i-1, j);
return dim;
}
else if (check_prohibited(i+1, j) == 0)
{
c_move(i+1, j);
return dim;
}
}
else if (!(lines[i][j-1] == -70) && lines[i][j+1] == -70 && !(lines[i-1][j] == -51) && !(lines[i+1][j] == -51))
{
if (check_prohibited(i, j-1) == 0)
{
c_move(i, j-1);
return dim;
}
else if (check_prohibited(i-1, j) == 0)
{
c_move(i-1, j);
return dim;
}
else if (check_prohibited(i+1, j) == 0)
{
c_move(i+1, j);
return dim;
}
}
else if (!(lines[i][j-1] == -70) && !(lines[i][j+1] == -70) && lines[i-1][j] == -51 && !(lines[i+1][j] == -51))
{
if (check_prohibited(i, j-1) == 0)
{
c_move(i, j-1);
return dim;
}
else if (check_prohibited(i, j+1) == 0)
{
c_move(i, j+1);
return dim;
}
else if (check_prohibited(i+1, j) == 0)
{
c_move(i+1, j);
return dim;
}
}
else if (!(lines[i][j-1] == -70) && !(lines[i][j+1] == -70) && !(lines[i-1][j] == -51) && lines[i+1][j] == -51)
{
if (check_prohibited(i, j-1) == 0)
{
c_move(i, j-1);
return dim;
}
else if (check_prohibited(i, j+1) == 0)
{
c_move(i, j+1);
return dim;
}
else if (check_prohibited(i-1, j) == 0)
{
c_move(i-1, j);
return dim;
}
}
}
}
/*make a move in zero line made box*/
for (int i = 1; i < x+x+1; i+=2)
{
for (int j = 1; j < y+y+1; j+=2)
{
if (!(lines[i][j-1] == -70) && !(lines[i][j+1] == -70) && !(lines[i-1][j] == -51) && !(lines[i+1][j] == -51))
{
if (check_prohibited(i, j-1) == 0)
{
c_move(i, j-1);
return dim;
}
else if (check_prohibited(i, j+1) == 0)
{
c_move(i, j+1);
return dim;
}
else if (check_prohibited(i-1, j) == 0)
{
c_move(i-1, j);
return dim;
}
else if (check_prohibited(i-1, j) == 0)
{
c_move(i+1, j);
return dim;
}
}
}
}
/*make a move in two line made box*/
for (int i = 1; i < x+x+1; i+=2)
{
for (int j = 1; j < y+y+1; j+=2)
{
if (!(lines[i][j-1] == -70) && !(lines[i][j+1] == -70) && lines[i-1][j] == -51 && lines[i+1][j] == -51)
{
c_move(i, j+1);
return dim;
}
else if (!(lines[i][j-1] == -70) && lines[i][j+1] == -70 && !(lines[i-1][j] == -51) && lines[i+1][j] == -51)
{
c_move(i, j-1);
return dim;
}
else if (!(lines[i][j-1] == -70) && lines[i][j+1] == -70 && lines[i-1][j] == -51 && !(lines[i+1][j] == -51))
{
c_move(i+1, j);
return dim;
}
else if (lines[i][j-1] == -70 && !(lines[i][j+1] == -70) && !(lines[i-1][j] == -51) && lines[i+1][j] == -51)
{
c_move(i, j+1);
return dim;
}
else if (lines[i][j-1] == -70 && !(lines[i][j+1] == -70) && lines[i-1][j] == -51 && !(lines[i+1][j] == -51))
{
c_move(i+1, j);
return dim;
}
else if (lines[i][j-1] == -70 && lines[i][j+1] == -70 && !(lines[i-1][j] == -51) && !(lines[i+1][j] == -51))
{
c_move(i-1, j);
return dim;
}
}
}
/*AI logic in case of easy*/
}
else
{
/*choose a random move and check its validity*/
while(1)
{
found = 0;
rowno = rand()%(2*x+1);
columnno = rand()%(2*x+1);
if (rowno % 2 == columnno % 2)
{
continue;
}
for (int i = 0; i < x*(x+1)*2; i++)
{
if ((rowno + 1 == moves_history[i][0]) && (columnno + 1 == moves_history[i][1]))
{
continue;
}
}
row = rowno;
column = columnno;
dim = row * 100 + column;
return dim;
}
}
return 0;
}