Paper/patches/server/0521-Add-ignore-discounts-API.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Mariell Hoversholm <proximyst@proximyst.com>
Date: Mon, 9 Nov 2020 20:44:51 +0100
Subject: [PATCH] Add ignore discounts API


diff --git a/src/main/java/net/minecraft/world/entity/npc/Villager.java b/src/main/java/net/minecraft/world/entity/npc/Villager.java
index f7b8804394ad55e3f6c7c8c3a8f0fe7894385c90..089fb4640cb4e74d7cc90088a8772743d5cbe0c4 100644
--- a/src/main/java/net/minecraft/world/entity/npc/Villager.java
+++ b/src/main/java/net/minecraft/world/entity/npc/Villager.java
@@ -489,6 +489,7 @@ public class Villager extends AbstractVillager implements ReputationEventHandler
 
             while (iterator.hasNext()) {
                 MerchantOffer merchantrecipe = (MerchantOffer) iterator.next();
+                if (merchantrecipe.ignoreDiscounts) continue; // Paper
 
                 merchantrecipe.addToSpecialPriceDiff(-Mth.floor((float) i * merchantrecipe.getPriceMultiplier()));
             }
@@ -501,6 +502,7 @@ public class Villager extends AbstractVillager implements ReputationEventHandler
 
             while (iterator1.hasNext()) {
                 MerchantOffer merchantrecipe1 = (MerchantOffer) iterator1.next();
+                if (merchantrecipe1.ignoreDiscounts) continue; // Paper
                 double d0 = 0.3D + 0.0625D * (double) j;
                 int k = (int) Math.floor(d0 * (double) merchantrecipe1.getBaseCostA().getCount());
 
diff --git a/src/main/java/net/minecraft/world/item/trading/MerchantOffer.java b/src/main/java/net/minecraft/world/item/trading/MerchantOffer.java
index f3cf16ce1e1d6c8f76ca5823f532925253ae64aa..c9cb0717c2793acd5b5870a6cc4d672d69a40026 100644
--- a/src/main/java/net/minecraft/world/item/trading/MerchantOffer.java
+++ b/src/main/java/net/minecraft/world/item/trading/MerchantOffer.java
@@ -19,6 +19,7 @@ public class MerchantOffer {
     public int demand; // PAIL private -> public
     public float priceMultiplier;
     public int xp;
+    public boolean ignoreDiscounts; // Paper
     // CraftBukkit start
     private CraftMerchantRecipe bukkitHandle;
 
@@ -31,7 +32,15 @@ public class MerchantOffer {
     }
 
     public MerchantOffer(ItemStack itemstack, ItemStack itemstack1, ItemStack itemstack2, int uses, int maxUses, int experience, float priceMultiplier, int demand, CraftMerchantRecipe bukkit) {
-        this(itemstack, itemstack1, itemstack2, uses, maxUses, experience, priceMultiplier, demand);
+        // Paper start - add ignoreDiscounts param
+        this(itemstack, itemstack1, itemstack2, uses, maxUses, experience, priceMultiplier, demand, false, bukkit);
+    }
+    public MerchantOffer(ItemStack itemstack, ItemStack itemstack1, ItemStack itemstack2, int uses, int maxUses, int experience, float priceMultiplier, boolean ignoreDiscounts, CraftMerchantRecipe bukkit) {
+        this(itemstack, itemstack1, itemstack2, uses, maxUses, experience, priceMultiplier, 0, ignoreDiscounts, bukkit);
+    }
+    public MerchantOffer(ItemStack itemstack, ItemStack itemstack1, ItemStack itemstack2, int uses, int maxUses, int experience, float priceMultiplier, int demand, boolean ignoreDiscounts, CraftMerchantRecipe bukkit) {
+        this(itemstack, itemstack1, itemstack2, uses, maxUses, experience, priceMultiplier, demand, ignoreDiscounts);
+        // Paper end
         this.bukkitHandle = bukkit;
     }
     // CraftBukkit end
@@ -63,6 +72,7 @@ public class MerchantOffer {
 
         this.specialPriceDiff = nbt.getInt("specialPrice");
         this.demand = nbt.getInt("demand");
+        this.ignoreDiscounts = nbt.getBoolean("Paper.IgnoreDiscounts"); // Paper
     }
 
     public MerchantOffer(ItemStack buyItem, ItemStack sellItem, int maxUses, int merchantExperience, float priceMultiplier) {
@@ -74,10 +84,19 @@ public class MerchantOffer {
     }
 
     public MerchantOffer(ItemStack firstBuyItem, ItemStack secondBuyItem, ItemStack sellItem, int uses, int maxUses, int merchantExperience, float priceMultiplier) {
-        this(firstBuyItem, secondBuyItem, sellItem, uses, maxUses, merchantExperience, priceMultiplier, 0);
+        // Paper start - add ignoreDiscounts param
+        this(firstBuyItem, secondBuyItem, sellItem, uses, maxUses, merchantExperience, priceMultiplier, false);
+    }
+    public MerchantOffer(ItemStack firstBuyItem, ItemStack secondBuyItem, ItemStack sellItem, int uses, int maxUses, int merchantExperience, float priceMultiplier, boolean ignoreDiscounts) {
+        this(firstBuyItem, secondBuyItem, sellItem, uses, maxUses, merchantExperience, priceMultiplier, 0, ignoreDiscounts);
     }
 
     public MerchantOffer(ItemStack firstBuyItem, ItemStack secondBuyItem, ItemStack sellItem, int uses, int maxUses, int merchantExperience, float priceMultiplier, int demandBonus) {
+        this(firstBuyItem, secondBuyItem, sellItem, uses, maxUses, merchantExperience, priceMultiplier, demandBonus, false);
+    }
+    public MerchantOffer(ItemStack firstBuyItem, ItemStack secondBuyItem, ItemStack sellItem, int uses, int maxUses, int merchantExperience, float priceMultiplier, int demandBonus, boolean ignoreDiscounts) {
+        this.ignoreDiscounts = ignoreDiscounts;
+        // Paper end
         this.rewardExp = true;
         this.xp = 1;
         this.baseCostA = firstBuyItem;
@@ -193,6 +212,7 @@ public class MerchantOffer {
         nbttagcompound.putFloat("priceMultiplier", this.priceMultiplier);
         nbttagcompound.putInt("specialPrice", this.specialPriceDiff);
         nbttagcompound.putInt("demand", this.demand);
+        nbttagcompound.putBoolean("Paper.IgnoreDiscounts", this.ignoreDiscounts); // Paper
         return nbttagcompound;
     }
 
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMerchantRecipe.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMerchantRecipe.java
index 07462b77107541aed2e29d04da33831ac113b450..0f038f6152c90e707cb633dffcab0a1c5b99d260 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMerchantRecipe.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMerchantRecipe.java
@@ -18,11 +18,19 @@ public class CraftMerchantRecipe extends MerchantRecipe {
     }
 
     public CraftMerchantRecipe(ItemStack result, int uses, int maxUses, boolean experienceReward, int experience, float priceMultiplier) {
-        this(result, uses, maxUses, experienceReward, experience, priceMultiplier, 0, 0);
+        // Paper start - add ignoreDiscounts param
+        this(result, uses, maxUses, experienceReward, experience, priceMultiplier, 0, 0, false);
+    }
+    public CraftMerchantRecipe(ItemStack result, int uses, int maxUses, boolean experienceReward, int experience, float priceMultiplier, boolean ignoreDiscounts) {
+        this(result, uses, maxUses, experienceReward, experience, priceMultiplier, 0, 0, ignoreDiscounts);
     }
 
     public CraftMerchantRecipe(ItemStack result, int uses, int maxUses, boolean experienceReward, int experience, float priceMultiplier, int demand, int specialPrice) {
-        super(result, uses, maxUses, experienceReward, experience, priceMultiplier, demand, specialPrice);
+        this(result, uses, maxUses, experienceReward, experience, priceMultiplier, demand, specialPrice, false);
+    }
+    public CraftMerchantRecipe(ItemStack result, int uses, int maxUses, boolean experienceReward, int experience, float priceMultiplier, int demand, int specialPrice, boolean ignoreDiscounts) {
+        super(result, uses, maxUses, experienceReward, experience, priceMultiplier, demand, specialPrice, ignoreDiscounts);
+        // Paper end
         this.handle = new net.minecraft.world.item.trading.MerchantOffer(
                 net.minecraft.world.item.ItemStack.EMPTY,
                 net.minecraft.world.item.ItemStack.EMPTY,
@@ -32,6 +40,7 @@ public class CraftMerchantRecipe extends MerchantRecipe {
                 experience,
                 priceMultiplier,
                 demand,
+                ignoreDiscounts, // Paper - add ignoreDiscounts param
                 this
         );
         this.setSpecialPrice(specialPrice);
@@ -108,6 +117,18 @@ public class CraftMerchantRecipe extends MerchantRecipe {
         handle.priceMultiplier = priceMultiplier;
     }
 
+    // Paper start
+    @Override
+    public boolean shouldIgnoreDiscounts() {
+        return this.handle.ignoreDiscounts;
+    }
+
+    @Override
+    public void setIgnoreDiscounts(boolean ignoreDiscounts) {
+        this.handle.ignoreDiscounts = ignoreDiscounts;
+    }
+    // Paper end
+
     public net.minecraft.world.item.trading.MerchantOffer toMinecraft() {
         List<ItemStack> ingredients = getIngredients();
         Preconditions.checkState(!ingredients.isEmpty(), "No offered ingredients");
@@ -122,7 +143,7 @@ public class CraftMerchantRecipe extends MerchantRecipe {
         if (recipe instanceof CraftMerchantRecipe) {
             return (CraftMerchantRecipe) recipe;
         } else {
-            CraftMerchantRecipe craft = new CraftMerchantRecipe(recipe.getResult(), recipe.getUses(), recipe.getMaxUses(), recipe.hasExperienceReward(), recipe.getVillagerExperience(), recipe.getPriceMultiplier());
+            CraftMerchantRecipe craft = new CraftMerchantRecipe(recipe.getResult(), recipe.getUses(), recipe.getMaxUses(), recipe.hasExperienceReward(), recipe.getVillagerExperience(), recipe.getPriceMultiplier(), recipe.shouldIgnoreDiscounts()); // Paper - shouldIgnoreDiscounts
             craft.setIngredients(recipe.getIngredients());
 
             return craft;