XiuXianGame/Assets/Scripts/GameLogic/Player/DropManager.cs

using System;
using System.Collections.Generic;
using Excel2Json;
using Fort23.UTool;
using GameLogic.Bag;
using Utility;

namespace GameLogic.Player
{
    public class DropManager : Singleton<DropManager>
    {
        public Random Random = new Random();


        private Map<int, List<DropCountConfig>> dropCountGroupDic = new Map<int, List<DropCountConfig>>();
        private Map<int, int> maxWight = new Map<int, int>();

        public DropManager()
        {
            Random = new Random(System.DateTime.Now.Millisecond);
            DropCountConfig[] allDropCountConfigs = ConfigComponent.Instance.GetAll<DropCountConfig>();
            for (int i = 0; i < allDropCountConfigs.Length; i++)
            {
                DropCountConfig dropCountConfig = allDropCountConfigs[i];
                if (dropCountGroupDic.TryGetValue(dropCountConfig.ID, out var list))
                {
                    maxWight[dropCountConfig.ID] += dropCountConfig.weight;
                    list.Add(dropCountConfig);
                }
                else
                {
                    list = new List<DropCountConfig>();
                    list.Add(dropCountConfig);
                    dropCountGroupDic.Add(dropCountConfig.ID, list);
                    maxWight.Add(dropCountConfig.ID, dropCountConfig.weight);
                }
            }
        }

        public List<ItemInfo> DropItem(int dropId)
        {
            DropConfig dropConfig = ConfigComponent.Instance.Get<DropConfig>(dropId);
            if (dropConfig.ID <= 0)
            {
                LogTool.Error("没有这个掉落组" + dropId);
                return null;
            }

            if (dropConfig.dropType == 1)
            {
                return DropItemFor1(dropConfig);
            }
            else
            {
                return DropItemFor2(dropConfig);
            }
        }

        private List<ItemInfo> DropItemFor1(DropConfig dropConfig)
        {
            List<ItemInfo> itemInfos = new List<ItemInfo>();
            for (int i = 0; i < dropConfig.dropGroupID.Length; i++)
            {
                int dropGroupId = dropConfig.dropGroupID[i];
                DropGroupConfig dropGroupConfig = ConfigComponent.Instance.Get<DropGroupConfig>(dropGroupId);
                int odd = Random.Next(0, 1000);
                if (odd <= dropGroupConfig.dropRate)
                {
                    DropItemConfig(itemInfos, dropGroupConfig.dropItemID);
                }
            }

            return itemInfos;
        }

        private void DropItemConfig(List<ItemInfo> itemInfos, int[] dropItemID)
        {
            for (int i = 0; i < dropItemID.Length; i++)
            {
                DropItemConfig dropItemConfig = ConfigComponent.Instance.Get<DropItemConfig>(dropItemID[i]);
                for (int j = 0; j < dropItemConfig.itemID.Length; j++)
                {
                    int c = 0;
                    if (dropItemConfig.dropCountGoupID > 0)
                    {
                        DropCountConfig dropCountConfig = GetCountBl(dropItemConfig.dropCountGoupID);
                        c = (dropItemConfig.dropMaxV * dropCountConfig.proportion) / 100;
                    }
                    else
                    {
                        c = Random.Next(dropItemConfig.dropMinV, dropItemConfig.dropMaxV + 1);
                    }

                    ItemInfo itemInfo = new ItemInfo(dropItemConfig.itemID[j], c);
                    itemInfos.Add(itemInfo);
                }
            }
        }

        private DropCountConfig GetCountBl(int dropCountGroupID)
        {
            if (dropCountGroupDic.TryGetValue(dropCountGroupID, out var dropCountGroupConfig))
            {
                int wight = maxWight[dropCountGroupID];
                int currWight = Random.Next(0, wight);
                int addWidght = 0;
                for (int i = 0; i < dropCountGroupConfig.Count; i++)
                {
                    DropCountConfig dropCountConfig = dropCountGroupConfig[i];
                    addWidght += dropCountConfig.weight;
                    if (currWight <= addWidght)
                    {
                        return dropCountConfig;
                    }
                }
            }

            LogTool.Error("没有掉落的数量" + dropCountGroupID);

            return default;
        }

        private List<ItemInfo> DropItemFor2(DropConfig dropConfig)
        {
            List<ItemInfo> itemInfos = new List<ItemInfo>();
            int allRate = 0;
            for (int i = 0; i < dropConfig.dropGroupID.Length; i++)
            {
                int dropGroupId = dropConfig.dropGroupID[i];
                DropGroupConfig dropGroupConfig = ConfigComponent.Instance.Get<DropGroupConfig>(dropGroupId);
                allRate += dropGroupConfig.dropRate;
            }

            int currWight = Random.Next(0, allRate);
            int addWidght = 0;
            for (int i = 0; i < dropConfig.dropGroupID.Length; i++)
            {
                int dropGroupId = dropConfig.dropGroupID[i];
                DropGroupConfig dropGroupConfig = ConfigComponent.Instance.Get<DropGroupConfig>(dropGroupId);
                addWidght += dropGroupConfig.dropRate;
                if (currWight <= addWidght)
                {
                    DropItemConfig(itemInfos, dropGroupConfig.dropItemID);
                    return itemInfos;
                }
            }

            return itemInfos;
        }
    }
}