DropOneByOne.cs

Go to the documentation of this file.

using System.Collections.Generic;
 
namespace Terraria.GameContent.ItemDropRules;
 
public class DropOneByOne : IItemDropRule
{
    public struct Parameters
    {
        public int ChanceNumerator;
 
        public int ChanceDenominator;
 
        public int MinimumItemDropsCount;
 
        public int MaximumItemDropsCount;
 
        public int MinimumStackPerChunkBase;
 
        public int MaximumStackPerChunkBase;
 
        public int BonusMinDropsPerChunkPerPlayer;
 
        public int BonusMaxDropsPerChunkPerPlayer;
 
        public float GetPersonalDropRate()
        {
            return (float)ChanceNumerator / (float)ChanceDenominator;
        }
    }
 
    public int itemId;
 
    public Parameters parameters;
 
    public List<IItemDropRuleChainAttempt> ChainedRules { get; private set; }
 
    public DropOneByOne(int itemId, Parameters parameters)
    {
        ChainedRules = new List<IItemDropRuleChainAttempt>();
        this.parameters = parameters;
        this.itemId = itemId;
    }
 
    public ItemDropAttemptResult TryDroppingItem(DropAttemptInfo info)
    {
        ItemDropAttemptResult result;
        if (info.player.RollLuck(parameters.ChanceDenominator) < parameters.ChanceNumerator)
        {
            int num = info.rng.Next(parameters.MinimumItemDropsCount, parameters.MaximumItemDropsCount + 1);
            int activePlayersCount = Main.CurrentFrameFlags.ActivePlayersCount;
            int minValue = parameters.MinimumStackPerChunkBase + activePlayersCount * parameters.BonusMinDropsPerChunkPerPlayer;
            int num2 = parameters.MaximumStackPerChunkBase + activePlayersCount * parameters.BonusMaxDropsPerChunkPerPlayer;
            for (int i = 0; i < num; i++)
            {
                CommonCode.DropItemFromNPC(info.npc, itemId, info.rng.Next(minValue, num2 + 1), scattered: true);
            }
            result = default(ItemDropAttemptResult);
            result.State = ItemDropAttemptResultState.Success;
            return result;
        }
        result = default(ItemDropAttemptResult);
        result.State = ItemDropAttemptResultState.FailedRandomRoll;
        return result;
    }
 
    public void ReportDroprates(List<DropRateInfo> drops, DropRateInfoChainFeed ratesInfo)
    {
        float personalDropRate = parameters.GetPersonalDropRate();
        float dropRate = personalDropRate * ratesInfo.parentDroprateChance;
        drops.Add(new DropRateInfo(itemId, parameters.MinimumItemDropsCount * (parameters.MinimumStackPerChunkBase + parameters.BonusMinDropsPerChunkPerPlayer), parameters.MaximumItemDropsCount * (parameters.MaximumStackPerChunkBase + parameters.BonusMaxDropsPerChunkPerPlayer), dropRate, ratesInfo.conditions));
        Chains.ReportDroprates(ChainedRules, personalDropRate, drops, ratesInfo);
    }
 
    public bool CanDrop(DropAttemptInfo info)
    {
        return true;
    }
}