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Remote agent/Simulation/C: Difference between revisions
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<noinclude>{{
Server/client programs share a lot of code, so they are all lumped together here. To compile, dump all three files in the same dir, and compile server.c and client.c separately. The server binds to port 11111. Both server and client display the current map, though only the server has the whole world, the client only knows cells the agent has been to.
;<nowiki>server.c:</nowiki>
<syntaxhighlight lang="c" line>
#include <stdlib.h>
#include <unistd.h>
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#define W 30
#define H 30
int do_server_stuff(int);
Line 132:
return 1;
}</
;<nowiki>client.c:</nowiki>
<syntaxhighlight lang="c" line>
#include <stdlib.h>
#include <unistd.h>
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#include <err.h>
#include "common.c"
typedef struct task_node_t {
int x, y;
struct task_node_t *prev, *sibling, *chain;
} task_node_t, *task;
task pool = 0, used = 0;
task find_place_to_go(byte **f);
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return used;
}
void remove_tasks()
{
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}
}
int w, h;
int do_client_stuff(int);
int main(int c, char *v[])
{
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struct sockaddr_in peer;
struct hostent *server;
if (c < 3) err(1, "Usage: %s host port\n", v[0]);
port = atoi(v[2]);
if (port <= 0) err(1, "bad port: %d\n", port);
server = gethostbyname(v[1]);
if (!server) err(1, "Unknown server %s", v[1]);
if ((sfd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
err(1, "Can't open socket");
memset(&peer, 0, sizeof(peer));
peer.sin_family = AF_INET;
memcpy(
peer.sin_port = htons(port);
if (connect(sfd, (struct sockaddr *)&peer, sizeof(peer)) < 0)
err(1, "Can't connect to %s port %d", v[1], port);
puts("\033[H\033[J");
do_client_stuff(sfd);
close(sfd);
return 0;
}
byte ** init_map()
{
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return f;
}
byte **f;
int try_forward(int);
void say_and_listen(int, int, int*);
int do_client_stuff(int fd)
{
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int response[MAX_CMD];
task tgt;
if (c != 'A') {
fprintf(stderr, "Bad handshake: %c\n", c);
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f = init_map();
c = 0;
while (c != -1) {
x = agent.x, y = agent.y;
show_field(f, w, h);
if (agent.ball == -1 && cell_ball(f, x, y) >= 0
&& cell_ball(f, x, y) != cell_color(f, x, y))
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continue;
}
if (agent.ball == cell_color(f, x, y) && cell_ball(f, x, y) == -1) {
say_and_listen(fd, c_drop, response);
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continue;
}
goto_place(fd, f, tgt = find_place_to_go(f));
continue;
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return 0;
}
void expand_map()
{
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int dx, dy;
byte **nf;
switch(d) {
case 0: case 2: w2++; break;
default: h2++; break;
}
nf = byte_array(w2, h2);
FOR(i, h2) FOR(j, w2) nf[i][j] = unknown;
dx = agent.x == 0;
dy = agent.y == 0;
FOR(i, h) FOR(j, w) nf[i + dy][j + dx] = f[i][j];
if (!agent.x) agent.x = 1;
if (!agent.y) agent.y = 1;
w = w2, h = h2;
printf("expand: %d %d\n", w, h);
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f = nf;
}
int try_forward(int fd)
{
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return 1;
}
void say_and_listen(int fd, int cmd, int *resp)
{
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}
}
int is_interesting(byte **f, task t)
{
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if ((f[y][x] & unknown))
return y != agent.y || x != agent.x;
c = cell_color(f, x, y);
b = cell_ball(f, x, y);
a = agent.ball;
if (a >= 0)
return a == c && b == -1;
else if (b >= 0 && b != c)
return 1;
return 0;
}
task find_place_to_go(byte **f)
{
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current->x = agent.x, current->y = agent.y;
f[current->y][current->x] |= marked;
if (is_interesting(f, current)) return current;
while (current) {
while (current) {
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next = 0;
}
puts("nowhere to go");
abort();
}
void goto_place(int fd, byte **f, task t)
{
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usleep(50000);
t->prev = 0;
if (agent.x == t->x && agent.y == t->y) return;
while ( t->x != agent.x + dirs[agent.facing][0] ||
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turn(c_cw), say(c_cw), hear();
try_forward(fd);
}
</syntaxhighlight>
<syntaxhighlight lang="c" line>
enum {
c_fwd, c_cw, c_ccw, c_get, c_drop, c_over, c_stop,
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};
const char *cmds = "^><@!+.RGYBrgyb|SAsa";
inline int cmd_to_char(int c) { return cmds[c]; }
inline int char_to_cmd(int c) {
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}
const char *colors[] = { "31", "32", "33", "34" };
const char *ag
inline int cell_color(byte **f, int x, int y)
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if (dir == c_cw)
if (++agent.facing > 3) agent.facing = 0;
}
</syntaxhighlight>
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