上线代码修改
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@@ -1411,29 +1411,15 @@ class GiveGift extends Model
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if (empty($gift_bag_details)) {
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return ['code' => 0, 'msg' => '当前盲盒无可用礼物', 'data' => []];
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}
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//上一次抽取的礼物
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$last_receive_log = db::name("vs_gift_bag_receive_log")->where(['gift_bag_id'=>$gift_bag_id,'user_id'=>$user_id])->order('id desc')->find();
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$last_receive_gift_id = $last_receive_log ? $last_receive_log['gift_id'] : 0;
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// 实现加权随机算法:剩余数量越多,被抽中的概率越大
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$total_remaining = 0;
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$weight_reduction = 0; // 可以根据需求调整权重降低幅度,例如设置为上次礼物剩余数量的一半
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foreach ($gift_bag_details as $gift) {
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if ($gift['foreign_id'] == $last_receive_gift_id) {
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// 对上次抽中的礼物降低权重,例如减少其剩余数量的一半作为惩罚因子
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$reduced_remaining = max(1, floor($gift['remaining_number'] / 2));
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$total_remaining += $reduced_remaining;
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} else {
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$total_remaining += $gift['remaining_number'];
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}
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$total_remaining += $gift['remaining_number'];
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}
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$rand_value = mt_rand(1, $total_remaining);
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$current_sum = 0;
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$gift_bag_detail = null;
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foreach ($gift_bag_details as $gift) {
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// 如果是上次抽中的礼物,则使用调整后的剩余数量
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if ($gift['foreign_id'] == $last_receive_gift_id) {
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$gift['remaining_number'] = max(1, floor($gift['remaining_number'] / 2));
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}
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if($gift['remaining_number'] <= 0){
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continue;
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}
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