public function index()
{
$prizeDb = M('prize');
$prize_arr = $prizeDb->where('id>0')->select();
$this->assign('prize_arr', $prize_arr);
if (session('?username') == false || session('?password') == false) {
//判断session是否存在用户名和密码
$this->assign('login', 1);
//用户名和密码中有一个不存在，显示登录页面
$this->display('scratch');
//print_r($prize_arr);
} else {
//如果session中存储了用户名和密码，显示抽奖页面
$scratchDb = M('scratch');
$result = $scratchDb->where("username='******'", session('username'))->find();
if (!$result) {
$scratch = array('username' => session('username'), 'times' => 2, 'time' => time());
$scratchDb->data($scratch)->add();
} else {
$scratch = $result;
}
$prize = getPrize($prize_arr);
$refreshTime = mktime(0, 0, 0, date("m", $scratch['time']), date("d", $scratch['time']) + 1, date("Y", $scratch['time']));
$scratch['time'] = time();
if ($scratch['time'] > $refreshTime) {
$scratch['times'] = 2;
}
if ($scratch['times'] > 0) {
$scratch['times'] = $scratch['times'] - 1;
$scratchDb->save($scratch);
$this->assign('scratch', $scratch);
$this->assign('prize', $prize);
$this->display('scratch');
$id = $prize['id'];
if ($id < 7) {
$prize_arr[$id - 1]['v'] = $prize_arr[$id - 1]['v'] - 1;
$prizeDb->save($prize_arr[$id - 1]);
S($prize['sncode'], $prize['num']);
}
} else {
$this->display('tomorrow');
}
}
}
/**
* It checks if the world is full
*
* @return bool True, if it is full; false, in the opposite case
*/
function isFull()
{
if (count(getStatic()) + count(getDynamic()) + count(getPrize()) < getSizeWorld()['row'] * getSizeWorld()['col']) {
return false;
} else {
return true;
}
}
//The prize's order on the turn-plate
$prize_arr = array($prize[0], $prize[1], $prize[2], $prize[1], $prize[2], $prize[3], $prize[2], $prize[1]);
/*According to the prize's value, calculate prize's probability
Create random number and get the corresponding prize*/
function getPrize($prize_arr)
{
$prize_sum = 0;
foreach ($prize_arr as $v) {
$prize_sum += $v['value'];
}
foreach ($prize_arr as $k => $v) {
$randNum = mt_rand(1, $prize_sum);
//random number
if ($randNum <= $v['value']) {
return array('id' => $k, 'state' => $v);
} else {
$prize_sum -= $v['value'];
}
}
}
/*Send the the data to the front-end
$data['prize']: all of prize's name
$data['id']: the prize of winning*/
$data = array();
$prize_result = getPrize($prize_arr);
$data['id'] = $prize_result['id'] + 1;
foreach ($prize_arr as $v) {
$data['prize'][] = urlencode($v['prize']);
}
echo urldecode(json_encode($data));
mysqli_close($conn);
