function move_ai($account)
{
global $player_data;
global $map_data;
if (player_ready($account) == False) {
irciv_privmsg("player {$account} not ready");
return;
}
unset($player_data[$account]["path"]);
if (isset($player_data[$account]["active"]) == False) {
irciv_privmsg("player {$account} has no active unit");
return;
}
$active = $player_data[$account]["active"];
$start = array();
$start["x"] = $player_data[$account]["units"][$active]["x"];
$start["y"] = $player_data[$account]["units"][$active]["y"];
$paths = array();
foreach ($player_data as $enemy_account => $enemy_data) {
if ($enemy_account == $account) {
continue;
}
$path = array();
$finish = array();
$finish["x"] = $player_data[$enemy_account]["units"][0]["x"];
$finish["y"] = $player_data[$enemy_account]["units"][0]["y"];
if (find_path($path, $start, $finish) == False) {
$player_data[$account]["status_messages"][] = "no path exists between {$account} and {$enemy_account}";
status($account);
continue;
}
if (count($path) <= 1) {
$player_data[$account]["status_messages"][] = "no path exists between {$account} and {$enemy_account}";
status($account);
continue;
}
$paths[] = $path;
}
$min_path_length = $map_data["cols"] * $map_data["rows"];
$min_path = -1;
for ($i = 0; $i < count($paths); $i++) {
if (count($paths[$i]) < $min_path_length) {
$min_path = $i;
$min_path_length = count($paths[$i]);
}
}
if ($min_path >= 0) {
$player_data[$account]["path"] = $paths[$min_path];
$dir = $paths[$min_path][1]["dir"];
move_active_unit($account, $dir);
}
}
irciv_privmsg("syntax: [~civ] (right|r)");
}
break;
case "d":
case "down":
if ($trailing == "") {
move_active_unit($account, 2);
$irciv_data_changed = True;
} else {
irciv_privmsg("syntax: [~civ] (down|d)");
}
break;
case "l":
case "left":
if ($trailing == "") {
move_active_unit($account, 3);
$irciv_data_changed = True;
} else {
irciv_privmsg("syntax: [~civ] (left|l)");
}
break;
case "b":
case "build":
if ($trailing != "") {
build_city($account, $trailing);
$irciv_data_changed = True;
} else {
irciv_privmsg("syntax: [~civ] (build|b) City Name");
}
break;
case "status":
