ItemDropWithConditionRule.cs

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using System.Collections.Generic;
 
namespace Terraria.GameContent.ItemDropRules;
 
public class ItemDropWithConditionRule : CommonDrop
{
    public IItemDropRuleCondition condition;
 
    public ItemDropWithConditionRule(int itemId, int chanceDenominator, int amountDroppedMinimum, int amountDroppedMaximum, IItemDropRuleCondition condition, int chanceNumerator = 1)
        : base(itemId, chanceDenominator, amountDroppedMinimum, amountDroppedMaximum, chanceNumerator)
    {
        this.condition = condition;
    }
 
    public override bool CanDrop(DropAttemptInfo info)
    {
        return condition.CanDrop(info);
    }
 
    public override void ReportDroprates(List<DropRateInfo> drops, DropRateInfoChainFeed ratesInfo)
    {
        DropRateInfoChainFeed ratesInfo2 = ratesInfo.With(1f);
        ratesInfo2.AddCondition(condition);
        float num = (float)chanceNumerator / (float)chanceDenominator;
        float dropRate = num * ratesInfo2.parentDroprateChance;
        drops.Add(new DropRateInfo(itemId, amountDroppedMinimum, amountDroppedMaximum, dropRate, ratesInfo2.conditions));
        Chains.ReportDroprates(base.ChainedRules, num, drops, ratesInfo2);
    }
}