kknongchang_2506/app/Module/Game/Models/GameRewardGroupPityCount.php

<?php

namespace App\Module\Game\Models;

use Illuminate\Database\Eloquent\Relations\BelongsTo;
use UCore\ModelCore;

/**
 * 奖励组保底计数
 *
 * field start 
 * @property  int  $id  
 * @property  int  $user_id  用户ID
 * @property  int  $reward_group_id  奖励组ID
 * @property  int  $reward_item_id  奖励项ID
 * @property  int  $count  当前计数
 * @property  int  $pity_threshold  保底阈值
 * @property  \Carbon\Carbon  $last_attempt_at  最后尝试时间
 * @property  \Carbon\Carbon  $last_hit_at  最后命中时间
 * @property  \Carbon\Carbon  $created_at  
 * @property  \Carbon\Carbon  $updated_at  
 * field end
 */
class GameRewardGroupPityCount extends ModelCore
{
    /**
     * 与模型关联的表名
     *
     * @var string
     */
    protected $table = 'game_reward_group_pity_counts';

    // attrlist start 
    protected $fillable = [
        'id',
        'user_id',
        'reward_group_id',
        'reward_item_id',
        'count',
        'pity_threshold',
        'last_attempt_at',
        'last_hit_at',
    ];
    // attrlist end

    /**
     * 应该被转换为原生类型的属性
     *
     * @var array
     */
    protected $casts = [
        'count' => 'integer',
        'pity_threshold' => 'integer',
        'last_attempt_at' => 'datetime',
        'last_hit_at' => 'datetime',
    ];

    /**
     * 获取关联的用户
     *
     * @return BelongsTo
     */
    public function user(): BelongsTo
    {
        return $this->belongsTo(\App\Models\User::class, 'user_id');
    }

    /**
     * 获取关联的奖励组
     *
     * @return BelongsTo
     */
    public function rewardGroup(): BelongsTo
    {
        return $this->belongsTo(GameRewardGroup::class, 'reward_group_id');
    }

    /**
     * 获取关联的奖励项
     *
     * @return BelongsTo
     */
    public function rewardItem(): BelongsTo
    {
        return $this->belongsTo(GameRewardItem::class, 'reward_item_id');
    }

    /**
     * 检查是否达到保底阈值
     *
     * @return bool
     */
    public function isAtPityThreshold(): bool
    {
        return $this->count >= $this->pity_threshold && $this->pity_threshold > 0;
    }

    /**
     * 增加计数
     *
     * @return void
     */
    public function incrementCount(): void
    {
        $this->increment('count');
        $this->update(['last_attempt_at' => now()]);
    }

    /**
     * 重置计数
     *
     * @return void
     */
    public function resetCount(): void
    {
        $this->update([
            'count' => 0,
            'last_hit_at' => now(),
        ]);
    }

    /**
     * 获取调整后的权重
     *
     * @param float $baseWeight 基础权重
     * @param float $weightFactor 权重因子
     * @return float
     */
    public function getAdjustedWeight(float $baseWeight, float $weightFactor): float
    {
        if ($this->pity_threshold <= 0) {
            return $baseWeight;
        }

        // 如果达到保底阈值，权重设为极大值确保必中
        if ($this->isAtPityThreshold()) {
            return 999999.0;
        }

        // 根据当前计数调整权重
        $progressRatio = $this->count / $this->pity_threshold;
        $adjustedWeight = $baseWeight * (1 + $progressRatio * $weightFactor);

        return $adjustedWeight;
    }
}