2021/10/27 상점구현

개발일지/팀GC Defence

2021/10/27 상점구현

박준희 2021. 10. 27. 19:51

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새로 개발하는 디펜스 게임의 상점을 구현

조건

스테이지 깰때마다 상점에 파는 아이템이 달라짐
무기 종류 5개, 등급 5개
등급에 따라 다른 확률 적용
중복 상관없음
상점 아이템 출력 개수 6개

1. 무기 등급에 따른 확률 테이블 제작 및 파싱 클래스 제작

json파일

shop_weapon_grade_percentage.json

[{"raw":100,"grade":0,"grade_name":"흔한","percentage":40},
    {"raw":101,"grade":1,"grade_name":"안흔함","percentage":30},
    {"raw":102,"grade":2,"grade_name":"희귀","percentage":20},
    {"raw":103,"grade":3,"grade_name":"고유","percentage":8},
    {"raw":104,"grade":4,"grade_name":"전설","percentage":2}]

item_weapon.json

[{"raw":1000,"item_name":"지팡이1","item_description":"흔한 지팡이","kind_of_money":0,"price":100,"item_type":0,"attack_power":10,"critical_attack_power":10,"critical_chance":10,"speed_of_attack":10,"item_grade":0,"weapon_type":0},
  {"raw":1001,"item_name":"지팡이2","item_description":"안흔한 지팡이","kind_of_money":0,"price":200,"item_type":0,"attack_power":11,"critical_attack_power":11,"critical_chance":11,"speed_of_attack":11,"item_grade":1,"weapon_type":0},
  {"raw":1002,"item_name":"지팡이3","item_description":"희귀 지팡이","kind_of_money":0,"price":300,"item_type":0,"attack_power":12,"critical_attack_power":12,"critical_chance":12,"speed_of_attack":12,"item_grade":2,"weapon_type":0},
  {"raw":1003,"item_name":"지팡이4","item_description":"고유 지팡이","kind_of_money":0,"price":400,"item_type":0,"attack_power":13,"critical_attack_power":13,"critical_chance":13,"speed_of_attack":13,"item_grade":3,"weapon_type":0},
  {"raw":1004,"item_name":"지팡이5","item_description":"전설 지팡이","kind_of_money":0,"price":500,"item_type":0,"attack_power":14,"critical_attack_power":14,"critical_chance":14,"speed_of_attack":14,"item_grade":4,"weapon_type":0},
  {"raw":1005,"item_name":"활1","item_description":"흔한 활","kind_of_money":0,"price":100,"item_type":0,"attack_power":10,"critical_attack_power":10,"critical_chance":10,"speed_of_attack":10,"item_grade":0,"weapon_type":1},
  {"raw":1006,"item_name":"활2","item_description":"안흔한 활","kind_of_money":0,"price":200,"item_type":0,"attack_power":11,"critical_attack_power":11,"critical_chance":11,"speed_of_attack":11,"item_grade":1,"weapon_type":1},
  {"raw":1007,"item_name":"활3","item_description":"희귀 활","kind_of_money":0,"price":300,"item_type":0,"attack_power":12,"critical_attack_power":12,"critical_chance":12,"speed_of_attack":12,"item_grade":2,"weapon_type":1},
  {"raw":1008,"item_name":"활4","item_description":"고유 활","kind_of_money":0,"price":400,"item_type":0,"attack_power":13,"critical_attack_power":13,"critical_chance":13,"speed_of_attack":13,"item_grade":3,"weapon_type":1},
  {"raw":1009,"item_name":"활5","item_description":"전설 활","kind_of_money":0,"price":500,"item_type":0,"attack_power":14,"critical_attack_power":14,"critical_chance":14,"speed_of_attack":14,"item_grade":4,"weapon_type":1},
  {"raw":1010,"item_name":"창1","item_description":"흔한 창","kind_of_money":0,"price":100,"item_type":0,"attack_power":10,"critical_attack_power":10,"critical_chance":10,"speed_of_attack":10,"item_grade":0,"weapon_type":2},
  {"raw":1011,"item_name":"창2","item_description":"안흔한 창","kind_of_money":0,"price":200,"item_type":0,"attack_power":11,"critical_attack_power":11,"critical_chance":11,"speed_of_attack":11,"item_grade":1,"weapon_type":2},
  {"raw":1012,"item_name":"창3","item_description":"희귀 창","kind_of_money":0,"price":300,"item_type":0,"attack_power":12,"critical_attack_power":12,"critical_chance":12,"speed_of_attack":12,"item_grade":2,"weapon_type":2},
  {"raw":1013,"item_name":"창4","item_description":"고유 창","kind_of_money":0,"price":400,"item_type":0,"attack_power":13,"critical_attack_power":13,"critical_chance":13,"speed_of_attack":13,"item_grade":3,"weapon_type":2},
  {"raw":1014,"item_name":"창5","item_description":"전설 창","kind_of_money":0,"price":500,"item_type":0,"attack_power":14,"critical_attack_power":14,"critical_chance":14,"speed_of_attack":14,"item_grade":4,"weapon_type":2},
  {"raw":1015,"item_name":"성수1","item_description":"흔한 성수","kind_of_money":0,"price":100,"item_type":0,"attack_power":10,"critical_attack_power":10,"critical_chance":10,"speed_of_attack":10,"item_grade":0,"weapon_type":3},
  {"raw":1016,"item_name":"성수2","item_description":"안흔한 성수","kind_of_money":0,"price":200,"item_type":0,"attack_power":11,"critical_attack_power":11,"critical_chance":11,"speed_of_attack":11,"item_grade":1,"weapon_type":3},
  {"raw":1017,"item_name":"성수3","item_description":"희귀 성수","kind_of_money":0,"price":300,"item_type":0,"attack_power":12,"critical_attack_power":12,"critical_chance":12,"speed_of_attack":12,"item_grade":2,"weapon_type":3},
  {"raw":1018,"item_name":"성수4","item_description":"고유 성수","kind_of_money":0,"price":400,"item_type":0,"attack_power":13,"critical_attack_power":13,"critical_chance":13,"speed_of_attack":13,"item_grade":3,"weapon_type":3},
  {"raw":1019,"item_name":"성수5","item_description":"전설 성수","kind_of_money":0,"price":500,"item_type":0,"attack_power":14,"critical_attack_power":14,"critical_chance":14,"speed_of_attack":14,"item_grade":4,"weapon_type":3},
  {"raw":1020,"item_name":"검1","item_description":"흔한 검","kind_of_money":0,"price":100,"item_type":0,"attack_power":10,"critical_attack_power":10,"critical_chance":10,"speed_of_attack":10,"item_grade":0,"weapon_type":4},
  {"raw":1021,"item_name":"검2","item_description":"안흔한 검","kind_of_money":0,"price":200,"item_type":0,"attack_power":11,"critical_attack_power":11,"critical_chance":11,"speed_of_attack":11,"item_grade":1,"weapon_type":4},
  {"raw":1022,"item_name":"검3","item_description":"희귀 검","kind_of_money":0,"price":300,"item_type":0,"attack_power":12,"critical_attack_power":12,"critical_chance":12,"speed_of_attack":12,"item_grade":2,"weapon_type":4},
  {"raw":1023,"item_name":"검4","item_description":"고유 검","kind_of_money":0,"price":400,"item_type":0,"attack_power":13,"critical_attack_power":13,"critical_chance":13,"speed_of_attack":13,"item_grade":3,"weapon_type":4},
  {"raw":1024,"item_name":"검5","item_description":"전설 검","kind_of_money":0,"price":500,"item_type":0,"attack_power":14,"critical_attack_power":14,"critical_chance":14,"speed_of_attack":14,"item_grade":4,"weapon_type":4}]

파싱클래스

RawData.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class RawData
{
    public string raw;
}

JsonItem.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class JsonItem : RawData
{
    public string item_name;
    public string item_description;
    public int kind_of_money;
    public int price;
    public int item_type;
}

public class JsonWeapon : JsonItem
{
    public float attack_power;
    public float critical_attack_power;
    public float critical_chance;
    public float speed_of_attack;
    public int item_grade;
    public int weapon_type;
}


public class JsonShopWeaponGradePercentage : RawData
{
    public int grade;
    public string grade_name;
    public float percentage;
}

2. json파일을 읽고 메모리상에 가지고 있을 데이터 매니저 제작

DataManager.cs

using Newtonsoft.Json;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;

public class DataManager
{
    public static readonly DataManager Instance = new DataManager();
    private List<RawData> list = new List<RawData>();

    public void LoadData<T>(string path) where T : RawData
    {
        var json = this.ReadFile(path).text;
        var arr = JsonConvert.DeserializeObject<T[]>(json);
        if (arr != null)
        {
            this.list.AddRange(arr);
        }
    }
    private TextAsset ReadFile(string path)
    {
        var json = Resources.Load<TextAsset>(path);
        return json;
    }


    public IEnumerable<T> GetDatas<T>()
    {
        return this.list.OfType<T>();
    }

    public T GetData<T>(string id) where T : RawData
    {
        var data = this.list.FindAll(x => x != null && x.GetType().Equals(typeof(T)));

        foreach (RawData rawData in data)
        {
            if (rawData.raw == id)
            {
                return (T)rawData;
            }
        }
        return null;
    }
}

3. 게임 시작 시 DataManager의 list에 json데이터를 추가

App.cs

    public void LoadJsonData()
    {
        DataManager.Instance.LoadData<JsonWeapon>("JsonData/item_weapon");        
        DataManager.Instance.LoadData<JsonShopWeaponGradePercentage>("JsonData/shop_weapon_grade_percentage");
    }

4. 로비에서 상점목록 로드

Lobby.cs

public void ShopLoading()
    {
        var prefab = Resources.Load<GameObject>("Prefabs/shopItem");

        var percentages = DataManager.Instance.GetDatas<JsonShopWeaponGradePercentage>();
        List<float> listPercentages = new List<float>();
        foreach(var per in percentages)
        {
            listPercentages.Add(per.percentage);
        }

        //6개 아이템만 표시
        for (int i = 0; i < 6; i++)
        {
            var go = Instantiate(prefab);
            var shopItem = go.GetComponent<ShopItem>();
            //데이터 매니저에서JsonWeapon타입만 취득
            var listWeaponItems = DataManager.Instance.GetDatas<JsonWeapon>();
            //shop_weapon_grade_percentage.json파일의 확률을 적용
            var grade = Choose(listPercentages.ToArray());
            //무기 종류가 5개이므로 동일한 확률로 랜덤 적용
            var weaponType = Random.Range(0, 5);


            foreach(var item in listWeaponItems)
            {
                if(item.item_grade == grade && item.weapon_type == weaponType)
                {
                    shopItem.Init(item);
                    shopItem.transform.SetParent(shopWeapon.transform);
                    break;
                }
            }
            
        }

       
    }

    public float Choose(float[] probs)
    {

        float total = 0;

        foreach (float elem in probs)
        {
            total += elem;
        }

        float randomPoint = Random.value * total;

        for (int i = 0; i < probs.Length; i++)
        {
            if (randomPoint < probs[i])
            {
                return i;
            }
            else
            {
                randomPoint -= probs[i];
            }
        }
        return probs.Length - 1;
    }

확률이 다른 항목 선택 참고

https://docs.unity3d.com/kr/2019.4/Manual/RandomNumbers.html

랜덤 게임플레이 요소 추가 - Unity 매뉴얼

여러 게임에서 임의로 선택되는 항목 및 값은 중요합니다. 이 섹션에서는 Unity에 내장된 랜덤 함수를 사용하여 일반적인 게임 역학을 구현하는 방법에 대해 알아봅니다.

docs.unity3d.com

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