135 lines
5.0 KiB
PHP
135 lines
5.0 KiB
PHP
<?php
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namespace app\common\library;
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class LotteryGiftLua
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{
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// 获取Lua脚本
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public static function getLotteryLuaScript()
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{
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return <<<LUA
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-- 接收参数：send_uid, recv_uid, gift_gold, small_trigger_times, big_threshold, small_round, big_round, big_total_gold
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local send_uid = ARGV[1]
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local recv_uid = ARGV[2]
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local gift_gold = tonumber(ARGV[3])
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local small_trigger_times = tonumber(ARGV[4])
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local big_threshold = tonumber(ARGV[5])
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local small_round = tonumber(ARGV[6]) -- 小奖池当前轮次
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local big_round = tonumber(ARGV[7]) -- 大奖池当前轮次
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local big_total_gold = tonumber(ARGV[8]) -- 大奖池当前轮次金额
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-- 核心约束：强制小轮次 ≥ 大轮次
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if small_round < big_round then
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small_round = big_round
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end
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-- 1. 基础金额拆分
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local recv_gold = gift_gold * 0.5
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local small_pool_add = gift_gold * 0.5
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-- 2. Redis键定义
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local small_round_key = "lottery:small_pool:round"
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local small_total_times_key = "lottery:small_pool:total_times"
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local small_total_gold_key = "lottery:small_pool:total_gold"
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local big_round_key = "lottery:big_pool:round"
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local big_total_gold_key = "lottery:big_pool:total_gold"
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-- 初始化轮次（确保Redis与入参一致）
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redis.call('set', small_round_key, small_round)
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redis.call('set', big_round_key, big_round)
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-- 初始化大奖池金额
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if big_total_gold == 0 or big_total_gold == nil then
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big_total_gold = tonumber(redis.call('get', big_total_gold_key) or 0)
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end
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-- 3. 小奖池累计更新
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local small_total_times = tonumber(redis.call('incr', small_total_times_key))
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local small_total_gold = tonumber(redis.call('get', small_total_gold_key) or 0)
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small_total_gold = math.floor((small_total_gold + small_pool_add) * 100) / 100
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redis.call('set', small_total_gold_key, small_total_gold)
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-- 4. 返回结果初始化（区分大小轮次）
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local result = {
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send_uid = send_uid,
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recv_uid = recv_uid,
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gift_gold = gift_gold,
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recv_gold = recv_gold,
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small_pool_add = small_pool_add,
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small_total_times = small_total_times,
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small_total_gold = small_total_gold,
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is_small_prize = 0,
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small_prize_amount = 0,
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small_remain_amount = 0,
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is_big_prize = 0,
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big_prize_amount = 0,
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big_release_amount = 0,
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small_round = small_round, -- 小奖池轮次
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big_round = big_round, -- 大奖池轮次
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big_total_gold = big_total_gold,
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-- 新增：记录要划入下一轮的小奖开奖金额
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small_prize_to_big_next_round = 0
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}
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-- 5. 小奖池开奖判断（小轮次+1）
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if small_total_times >= small_trigger_times then
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result.is_small_prize = 1
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-- 小奖随机比例
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local small_ratio = math.random(2, 99)
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result.small_prize_amount = math.floor(small_total_gold * small_ratio / 100 * 100) / 100
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-- 小奖剩余金额（划入大奖池当前轮次）
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result.small_remain_amount = math.floor((small_total_gold - result.small_prize_amount) * 100) / 100
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-- 重置小奖池，小轮次+1
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redis.call('set', small_total_times_key, 0)
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redis.call('set', small_total_gold_key, 0)
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small_round = small_round + 1
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redis.call('set', small_round_key, small_round)
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result.small_round = small_round
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-- 6. 小奖剩余划入大奖池当前轮次
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big_total_gold = math.floor((big_total_gold + result.small_remain_amount) * 100) / 100
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redis.call('set', big_total_gold_key, big_total_gold)
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result.big_total_gold = big_total_gold
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-- 7. 大奖池开奖判断（大轮次+1）
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if big_total_gold >= big_threshold then
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result.is_big_prize = 1
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-- 大奖比例权重
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local weight_sum = 20 + 50 + 30
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local random_weight = math.random(1, weight_sum)
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local big_ratio = random_weight <= 20 and 60 or (random_weight <= 70 and 70 or 80)
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-- 大奖金额
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result.big_prize_amount = math.floor(big_total_gold * big_ratio / 100 * 100) / 100
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result.big_release_amount = math.floor((big_total_gold - result.big_prize_amount) * 100) / 100
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-- 原有逻辑：重置大奖池，大轮次+1
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redis.call('set', big_total_gold_key, 0)
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big_round = big_round + 1
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redis.call('set', big_round_key, big_round)
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-- 强制保证小轮次≥大轮次
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if small_round < big_round then
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small_round = big_round
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redis.call('set', small_round_key, small_round)
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result.small_round = small_round
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end
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result.big_round = big_round
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result.big_total_gold = 0
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-- ===================== 新增核心逻辑 =====================
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-- 小奖开奖金额累加到大奖池下一轮次（新的big_round）
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result.small_prize_to_big_next_round = result.small_prize_amount
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-- 原子性更新大奖池下一轮次金额
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local new_big_total_gold = math.floor(result.small_prize_amount * 100) / 100
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redis.call('set', big_total_gold_key, new_big_total_gold)
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result.big_total_gold = new_big_total_gold
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-- ======================================================
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end
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end
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-- 返回结果
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return cjson.encode(result)
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LUA;
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}
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} |