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dfs.h
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#include <stdio.h>
#include "structs.h"
#include "mainMenu.h"
#include <stdlib.h>
#include <string.h>
#include "computer.h"
int checkCont(int r, int c, char grid[r][c], int visited[r][c], int r1, int c1, int r2, int c2){ //function checks around the input
int nextr, nextc;
visited[r1][c1]=1; visited[r2][c2]=1;
if (r1==r2) {
//general case
if(r1!=0 && r1!=r && c1!=0) {
if (grid[r1][c1-1] != ' ') {
nextr=r1; nextc=c1-2;
visited[r1][c1-2]=1;
if(nextr==r2&&nextc==c2) return 1;
checkCont(r,c,grid,visited,nextr,nextc,r2,c2);
}
if (grid[r1-1][c1] != ' ') {
nextr=r1-2; nextc=c1;
visited[r1-2][c1]=1;
if(nextr==r2&&nextc==c2) return 1;
checkCont(r,c,grid,visited,nextr,nextc,r2,c2);
}
if (grid[r1+1][c1] != ' ') {
nextr=r1+2; nextc=c1;
visited[r1+2][c1]=1;
if(nextr==r2&&nextc==c2) return 1;
checkCont(r,c,grid,visited,nextr,nextc,r2,c2);
}
}
//special cases
else if(r1==0){
if (grid[r1][c1-1] != ' ') {
nextr=r1; nextc=c1-2;
visited[r1][c1-2]=1;
if(nextr==r2&&nextc==c2) return 1;
checkCont(r,c,grid,visited,nextr,nextc,r2,c2);
}
if (grid[r1+1][c1] != ' ') {
nextr=r1+2; nextc=c1;
visited[r1+2][c1]=1;
if(nextr==r2&&nextc==c2) return 1;
checkCont(r,c,grid,visited,nextr,nextc,r2,c2);
}
}
else if(r1==r) {
if (grid[r1][c1-1] != ' ') {
nextr=r1; nextc=c1-2;
visited[r1][c1-2]=1;
if(nextr==r2&&nextc==c2) return 1;
checkCont(r,c,grid,visited,nextr,nextc,r2,c2);
}
if (grid[r1-1][c1] != ' ') {
nextr=r1-2; nextc=c1;
visited[r1-2][c1]=1;
if(nextr==r2&&nextc==c2) return 1;
checkCont(r,c,grid,visited,nextr,nextc,r2,c2);
}
}
else if(c1==0) {
if (grid[r1-1][c1] != ' ') {
nextr=r1-2; nextc=c1;
visited[r1-2][c1]=1;
if(nextr==r2&&nextc==c2) return 1;
checkCont(r,c,grid,visited,nextr,nextc,r2,c2);
}
if (grid[r1+1][c1] != ' ') {
nextr=r1+2; nextc=c1;
visited[r1+2][c1]=1;
if(nextr==r2&&nextc==c2) return 1;
checkCont(r,c,grid,visited,nextr,nextc,r2,c2);
}
}
}
if (c1==c2){
//general case
if(c1!=0 && c1!=c && r1!=0){
if (grid[r1][c1-1] != ' '){
nextr=r1; nextc=c1-2;
visited[r1][c1-2]=1;
if(nextr==r2&&nextc==c2) return 1;
checkCont(r,c,grid,visited,nextr,nextc,r2,c2);
}
if (grid[r1][c1+1] != ' ') {
nextr=r1; nextc=c1+2;
visited[r1][c1+2]=1;
if(nextr==r2&&nextc==c2) return 1;
checkCont(r,c,grid,visited,nextr,nextc,r2,c2);
}
if (grid[r1-1][c1] != ' ') {
nextr=r1-2; nextc=c1;
visited[r1-2][c1]=1;
if(nextr==r2&&nextc==c2) return 1;
checkCont(r,c,grid,visited,nextr,nextc,r2,c2);
}
}
//special cases
else if(c1==0){
if (grid[r1][c1+1] != ' ') {
nextr=r1; nextc=c1+2;
visited[r1][c1+2]=1;
if(nextr==r2&&nextc==c2) return 1;
checkCont(r,c,grid,visited,nextr,nextc,r2,c2);
}
if (grid[r1-1][c1] != ' ') {
nextr=r1-2; nextc=c1;
visited[r1-2][c1]=1;
if(nextr==r2&&nextc==c2) return 1;
checkCont(r,c,grid,visited,nextr,nextc,r2,c2);
}
}
else if(c1==c){
if (grid[r1][c1-1] != ' '){
nextr=r1; nextc=c1-2;
visited[r1][c1-2]=1;
if(nextr==r2&&nextc==c2) return 1;
checkCont(r,c,grid,visited,nextr,nextc,r2,c2);
}
if (grid[r1-1][c1] != ' ') {
nextr=r1-2; nextc=c1;
visited[r1-2][c1]=1;
if(nextr==r2&&nextc==c2) return 1;
checkCont(r,c,grid,visited,nextr,nextc,r2,c2);
}
}
else if(r1==0){
if (grid[r1][c1-1] != ' '){
nextr=r1; nextc=c1-2;
visited[r1][c1-2]=1;
if(nextr==r2&&nextc==c2) return 1;
checkCont(r,c,grid,visited,nextr,nextc,r2,c2);
}
if (grid[r1][c1+1] != ' ') {
nextr=r1; nextc=c1+2;
visited[r1][c1+2]=1;
if(nextr==r2&&nextc==c2) return 1;
checkCont(r,c,grid,visited,nextr,nextc,r2,c2);
}
}
}
for(int i=0; i<r; i++){
for(int j=0; j<c; j++){
visited[i][j]=0;
}
}
return 0;
}
int drawCont(int r, int c, char grid[r][c], int visited[r][c],int moves[],int *p,int turn,int s,int matrix[s][s]){
int count = 0;
for(int i=0; i<r; i++){
for(int j=0; j<c; j++){
if (visited[i][j] == 1 && visited[i][j+2] == 1) {
grid[i][j+1] = '_';
count+=comp_line_cont(i,j+1,s,matrix);
moves[*p] = i*1000+(j+1)*10+turn;
*p+=1;
}
if (visited[i][j] == 1 && visited[i+2][j] == 1) {
grid[i+1][j] = '|';
count+=comp_line_cont(i+1,j,s,matrix);
moves[*p] = (i+1)*1000+j*10+turn;
*p+=1;
}
}
}
return count;
}