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referee.cpp
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referee.cpp
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#include<cstdio>
#include<cstring>
#include<cstdlib>
#include<curses.h>
#include<unistd.h>
void readline(int p, char* ans, int n) {
int i = -1;
do {
i++;
read(p,ans+i,1);
if(*(ans+i)==10) {
*(ans+i) = 0;
return;
}
} while(i < n-1);
}
int main(int argc, char** argv) {
if(argc < 5) {
fprintf(stderr,"Usage: %s width height player1 player2\n",argv[0]);
return(0);
}
int w, h;
sscanf(argv[1],"%d",&w);
sscanf(argv[2],"%d",&h);
int oldstdin = dup(0), oldstdout = dup(1);
int stdin1[2], stdin2[2], stdout1[2], stdout2[2];
pipe(stdin1);
pipe(stdin2);
pipe(stdout1);
pipe(stdout2);
if(!fork()) {
//player 1
dup2(stdin1[0],0);
dup2(stdout1[1],1);
close(stdin1[1]);
close(stdout1[0]);
close(stdin2[0]);
close(stdin2[1]);
close(stdout2[0]);
close(stdout2[1]);
char* cargv[2] = {argv[3],NULL};
execv(cargv[0],cargv);
} else if(!fork()) {
//player 2
dup2(stdin2[0],0);
dup2(stdout2[1],1);
close(stdin1[0]);
close(stdin1[1]);
close(stdout1[0]);
close(stdout1[1]);
close(stdin2[1]);
close(stdout2[0]);
char* cargv[2] = {argv[4],NULL};
execv(cargv[0],cargv);
} else {
//referee
close(stdin1[0]);
close(stdout1[1]);
close(stdin2[0]);
close(stdout2[1]);
char name1[21], name2[21];
for(int i = 0; i<21; i++) name1[i]=name2[i]=0;
readline(stdout1[0],name1,20);
readline(stdout2[0],name2,20);
printf("%s vs %s\n",name1,name2);
write(stdin1[1],name2,strlen(name2));
write(stdin2[1],name1,strlen(name1));
write(stdin1[1],"\n",1);
write(stdin2[1],"\n",1);
char** dims = new char*;
asprintf(dims,"%d %d\n",w,h);
write(stdin1[1],*dims,strlen(*dims));
write(stdin2[1],*dims,strlen(*dims));
free(*dims);
char** loc1 = new char*, **loc2 = new char*;
bool** board;
int x1=w/4, y1=h/2, x2=3*w/4, y2=h/2;
asprintf(loc1,"%d %d %d %d\n",w/4,h/2,3*w/4,h/2);
asprintf(loc2,"%d %d %d %d\n",3*w/4,h/2,w/4,h/2);
write(stdin1[1],*loc1,strlen(*loc1));
write(stdin2[1],*loc2,strlen(*loc2));
free(*loc1);
free(*loc2);
board = new bool*[w];
for(int i = 0; i<w; i++) {
board[i] = new bool[h];
for(int j = 0; j<h; j++)
board[i][j] = 0;
}
board[x1][y1]=board[x2][y2]=1;
char mov1[5], mov2[5];
while(true) {
readline(stdout1[0],mov1,4);
readline(stdout2[0],mov2,4);
if(!strcmp(mov1,"N")) {
y1++;
} else if(!strcmp(mov1,"E")) {
x1++;
} else if(!strcmp(mov1,"W")) {
x1--;
} else {
y1--;
}
if(!strcmp(mov2,"N")) {
y2++;
} else if(!strcmp(mov2,"E")) {
x2++;
} else if(!strcmp(mov2,"W")) {
x2--;
} else {
y2--;
}
printf("%s %s\n",mov1,mov2);
if(((x1 < 0 || x1 >= w || y1 < 0 || y1 >= h) && (x2 < 0 || x2 >=w || y2 < 0 || y2 >=h)) || (x1 >= 0 && x1 < w && y1 >= 0 && y1 < h && x2 >= 0 && x2 < w && y2 >= 0 && y2 < h && board[x1][y1] && board[x2][x2])) {
write(stdin1[1],"T",2);
write(stdin2[1],"T",2);
write(stdin1[1],"\n",1);
write(stdin2[1],"\n",1);
break;
} else if(x1 < 0 || x1 >= w || y1 < 0 || y1 >=h || board[x1][y1]) {
write(stdin1[1],"X",2);
write(stdin2[1],"O",2);
write(stdin1[1],"\n",1);
write(stdin2[1],"\n",1);
break;
} else if(x2 < 0 || x2 >= w || y2 < 0 || y2 >=h || board[x2][y2]) {
write(stdin1[1],"O",2);
write(stdin2[1],"X",2);
write(stdin1[1],"\n",1);
write(stdin2[1],"\n",1);
break;
}
board[x1][y1]=board[x2][y2]=1;
printf("\n");
for(int r = h-1; r>=0; r--) {
for(int c = 0; c<w; c++) {
if(board[c][r]) printf("#");
else printf("_");
}
printf("\n");
}
write(stdin1[1],mov2,4);
write(stdin2[1],mov1,4);
write(stdin1[1],"\n",1);
write(stdin2[1],"\n",1);
}
}
}