优化中奖权重计算方式

2026-03-12 17:17:00 +08:00
parent 064ce06393
commit 7e4ba86afa
25 changed files with 2344 additions and 403 deletions
--- a/server/app/dice/model/reward/DiceReward.php
+++ b/server/app/dice/model/reward/DiceReward.php
@@ -0,0 +1,139 @@
+<?php
+// +----------------------------------------------------------------------
+// | saiadmin [ saiadmin快速开发框架 ]
+// +----------------------------------------------------------------------
+namespace app\dice\model\reward;
+
+use plugin\saiadmin\basic\think\BaseModel;
+use support\think\Cache;
+
+/**
+ * 奖励对照模型
+ *
+ * dice_reward 奖励对照表（主键 id 自增）
+ * 唯一约束 (direction, grid_number)，保证每个点数、每个方向各一条；end_index 关联 DiceRewardConfig.id
+ *
+ * @property  $id 主键
+ * @property  $tier 档位 T1-T5/BIGWIN
+ * @property  $direction 方向:0=顺时针,1=逆时针
+ * @property  $end_index 结束索引（DiceRewardConfig.id）
+ * @property  $weight 权重 1-10000，档位内按权重比抽取
+ * @property  $grid_number 色子点数(摇取值)
+ * @property  $start_index 起始索引(DiceRewardConfig.id)
+ * @property  $ui_text 显示文本(来自config)
+ * @property  $real_ev 实际中奖金额(来自config)
+ * @property  $remark 备注(来自config)
+ * @property  $type 奖励类型(来自config)
+ */
+class DiceReward extends BaseModel
+{
+    /** 方向：顺时针 */
+    public const DIRECTION_CLOCKWISE = 0;
+    /** 方向：逆时针 */
+    public const DIRECTION_COUNTERCLOCKWISE = 1;
+
+    /** 缓存键：奖励对照实例 */
+    private const CACHE_KEY_INSTANCE = 'dice:reward:instance';
+
+    private const CACHE_TTL = 86400 * 30;
+
+    private static ?array $instance = null;
+
+    protected $table = 'dice_reward';
+
+    /** 主键 id 自增，唯一约束 (direction, grid_number) */
+    protected $pk = 'id';
+
+    /**
+     * 获取奖励对照实例（按档位+方向索引，用于抽奖与权重配比）
+     * @return array{list: array, by_tier_direction: array}
+     */
+    public static function getCachedInstance(): array
+    {
+        if (self::$instance !== null) {
+            return self::$instance;
+        }
+        $instance = Cache::get(self::CACHE_KEY_INSTANCE);
+        if ($instance !== null && is_array($instance)) {
+            self::$instance = $instance;
+            return $instance;
+        }
+        self::refreshCache();
+        $instance = Cache::get(self::CACHE_KEY_INSTANCE);
+        self::$instance = is_array($instance) ? $instance : self::buildEmptyInstance();
+        return self::$instance;
+    }
+
+    /**
+     * 按档位+方向取权重列表（用于抽奖：该档位该方向下 end_index => weight）
+     * @return array<int, int> end_index => weight
+     */
+    public static function getCachedByTierAndDirection(string $tier, int $direction): array
+    {
+        $inst = self::getCachedInstance();
+        $byTierDirection = $inst['by_tier_direction'] ?? [];
+        $list = $byTierDirection[$tier][$direction] ?? [];
+        $result = [];
+        foreach ($list as $row) {
+            $endIndex = isset($row['end_index']) ? (int) $row['end_index'] : 0;
+            $weight = isset($row['weight']) ? (int) $row['weight'] : 1;
+            $result[$endIndex] = $weight;
+        }
+        return $result;
+    }
+
+    /**
+     * 重新从数据库加载并写入缓存；修改/新增/删除后需调用以实例化
+     */
+    public static function refreshCache(): void
+    {
+        $list = (new self())->order('tier')->order('direction')->order('end_index')->select()->toArray();
+        $byTierDirection = [];
+        foreach ($list as $row) {
+            $tier = isset($row['tier']) ? (string) $row['tier'] : '';
+            $direction = isset($row['direction']) ? (int) $row['direction'] : 0;
+            if ($tier !== '') {
+                if (!isset($byTierDirection[$tier])) {
+                    $byTierDirection[$tier] = [0 => [], 1 => []];
+                }
+                if (!isset($byTierDirection[$tier][$direction])) {
+                    $byTierDirection[$tier][$direction] = [];
+                }
+                $byTierDirection[$tier][$direction][] = $row;
+            }
+        }
+        self::$instance = [
+            'list'              => $list,
+            'by_tier_direction' => $byTierDirection,
+        ];
+        Cache::set(self::CACHE_KEY_INSTANCE, self::$instance, self::CACHE_TTL);
+    }
+
+    private static function buildEmptyInstance(): array
+    {
+        return [
+            'list'              => [],
+            'by_tier_direction' => [],
+        ];
+    }
+
+    public static function clearRequestInstance(): void
+    {
+        self::$instance = null;
+    }
+
+    public static function onAfterInsert($model): void
+    {
+        self::refreshCache();
+    }
+
+    public static function onAfterUpdate($model): void
+    {
+        self::refreshCache();
+    }
+
+    public static function onAfterDelete($model): void
+    {
+        self::refreshCache();
+    }
+}