ARPG Random Item Generation with Prefix & Suffixes

Question

Hi I'm currently making a small game that will have "random" loot drop after an enemy dies.

Quite new to c# and unity as well.

What I'm doing here is having the itemtype, prefixtype & suffixtype as Scriptable objects the lists are pulling from Classes. Then having it randomly roll for the stats with the dice.

But I'm stuck on how i would output all three of these as 1 singular item after all three have been rolled for. So for example, ItemBase(Sword) => PrefixType (Chilled) => SuffixType (Of the Base) and then output it as one singular item rather than three individual stats.

    using System.Collections.Generic;
    using System.Linq;
    using UnityEngine;
    
    public class Main : MonoBehaviour
    {
        [SerializeField] public List itemType = new List();
        [SerializeField] public List prefixType = new List();
        [SerializeField] public List suffixType = new List();
    
        [System.NonSerialized] private bool isInitialized = false;
    
        private float _totalWeight;
        private float _suffixWeight;
        private float _prefixWeight;
    
        private void Update()
        {
            GetRandomItem();
            GetRandomPrefix();
            GetRandomSuffix();
    
        }
    
        private void ItemInitialize()
        {
            if (!isInitialized)
            {
                _totalWeight = itemType.Sum(item => item.weight);
                _prefixWeight = prefixType.Sum(prefix => prefix.weight);
                _suffixWeight = suffixType.Sum(suffix => suffix.weight);
                isInitialized = true;
            }
        }
    
        public Item GetRandomItem()
        {
    
            // Make sure it is initalized
            ItemInitialize();
            // Roll our dice with _totalWeight faces
            float diceRoll = Random.Range(0f, _totalWeight);
    
            // Cycle through our items
            foreach (var item in itemType)
            {
                if (item.weight >= diceRoll)
                {
                    Debug.Log("Item: " + item.itemName);
                    return item;
                }
    
                // If we didn't return, we substract the weight to our diceRoll and cycle to the next item
                diceRoll -= item.weight;
            }
    
            // Spooky Error.
            throw new System.Exception("Reward generation failed!");
        }
    
        public Prefix GetRandomPrefix()
        {
            // Roll our dice with _totalWeight faces
            float diceRoll = Random.Range(0f, _prefixWeight);
    
            // Cycle through our items
            foreach (var prefix in prefixType)
            {
                if (prefix.weight >= diceRoll)
                {
                    Debug.Log("Item: " + prefix.prefixName);
                    return prefix;
                }
    
                // If we didn't return, we substract the weight to our diceRoll and cycle to the next item
                diceRoll -= prefix.weight;
            }
    
            // Spooky Error.
            throw new System.Exception("Reward generation failed!");
        }
    
        public Suffix GetRandomSuffix()
        {
    
            // Roll our dice with _totalWeight faces
            float diceRoll = Random.Range(0f, _suffixWeight);
    
            // Cycle through our items
            foreach (var suffix in suffixType)
            {
                if (suffix.weight >= diceRoll)
                {
                    Debug.Log("Item: " + suffix.suffixName);
                    return suffix;
                }
    
                // If we didn't return, we substract the weight to our diceRoll and cycle to the next item
                diceRoll -= suffix.weight;
            }
    
            // Spooky Error.
            throw new System.Exception("Reward generation failed!");
        }
    
    }

bartol44 · Answer

Basically, you want to create some structure to hold your item information, create its new object/instance, and paste the random values you got from your Main script.

Not really the greatest form of coding, but should give you and idea:

public class CompleteItem
{
    public Item item;
    public Prefix prefix;
    public Sufix sufix;
    public static CompleteItem CreateNewItem()
    {
        CompleteItem NewItem = new CompleteItem();

        NewItem.item = GetRandomItem();
        NewItem.prefix = GetRandomPrefix();
        NewItem.sufix = GetRandomSufix();

        return NewItem;
    }
}

It can be class, struct, monobehaviour, scriptable object, you name it. Just keep in mind, that if you want it to be MB, you can't use new keyword for creating new CompleteItems, other solutions may have their advantages and limitations.

Also treat it just as an idea, not a ready code to paste. For eg. GetRandomItem()call will fail. You will need to get reference to Main or find any other way to call those randomizing methods in your CompleteItem.

ARPG Random Item Generation with Prefix & Suffixes

1 Answers