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Code Issues Projects Releases Wiki Activity

further mitigate possible NPEs

This commit is contained in:
Jake Potrebic 2021-12-04 19:39:52 -08:00
parent 52f95706d2
commit 54b0c41c20
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GPG Key ID: ECE0B3C133C016C5
1 changed files with 18 additions and 21 deletions
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39
patches/server/0555-Add-PlayerTradeEvent-and-PlayerPurchaseEvent.patch
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@ -6,7 +6,7 @@ Subject: [PATCH] Add PlayerTradeEvent and PlayerPurchaseEvent
Co-authored-by: Alexander <protonull@protonmail.com>
diff --git a/src/main/java/net/minecraft/world/entity/npc/AbstractVillager.java b/src/main/java/net/minecraft/world/entity/npc/AbstractVillager.java
index 742ffe531bb8f3a9ca34dea99b044123d90cfff9..ce0364b98204b64d43751fed260dcc1d9fe60649 100644
index 742ffe531bb8f3a9ca34dea99b044123d90cfff9..bd283f71cb05ffbe1fed39afb41ae54dc52ec297 100644
--- a/src/main/java/net/minecraft/world/entity/npc/AbstractVillager.java
+++ b/src/main/java/net/minecraft/world/entity/npc/AbstractVillager.java
@@ -138,11 +138,24 @@ public abstract class AbstractVillager extends AgeableMob implements InventoryCa
@ -15,11 +15,11 @@ index 742ffe531bb8f3a9ca34dea99b044123d90cfff9..ce0364b98204b64d43751fed260dcc1d
+ // Paper start
+ @Override
+ public void processTrade(MerchantOffer recipe, io.papermc.paper.event.player.PlayerPurchaseEvent event) { // The MerchantRecipe passed in here is the one set by the PlayerPurchaseEvent
+ if (event.willIncreaseTradeUses()) {
+ public void processTrade(MerchantOffer recipe, @Nullable io.papermc.paper.event.player.PlayerPurchaseEvent event) { // The MerchantRecipe passed in here is the one set by the PlayerPurchaseEvent
+ if (event == null || event.willIncreaseTradeUses()) {
+ recipe.increaseUses();
+ }
+ if (event.isRewardingExp()) {
+ if (event == null || event.isRewardingExp()) {
+ this.rewardTradeXp(recipe);
+ }
+ this.notifyTrade(recipe);
@ -168,10 +168,10 @@ index 589527215b10aa848a079b964e748c8c2e6137a1..a6e036165ce1a387195cf3db190a42c5
return itemstack;
diff --git a/src/main/java/net/minecraft/world/inventory/MerchantResultSlot.java b/src/main/java/net/minecraft/world/inventory/MerchantResultSlot.java
index 74b28315197b81f80334ae6023113904e4fac4c3..1fb70ac171788d099e220b83421958976281f127 100644
index 74b28315197b81f80334ae6023113904e4fac4c3..7acf5ab9339e0134819aab5f270e99e927cc7a62 100644
--- a/src/main/java/net/minecraft/world/inventory/MerchantResultSlot.java
+++ b/src/main/java/net/minecraft/world/inventory/MerchantResultSlot.java
@@ -47,13 +47,35 @@ public class MerchantResultSlot extends Slot {
@@ -47,13 +47,32 @@ public class MerchantResultSlot extends Slot {
@Override
public void onTake(Player player, ItemStack stack) {
@ -180,11 +180,11 @@ index 74b28315197b81f80334ae6023113904e4fac4c3..1fb70ac171788d099e220b8342195897
MerchantOffer merchantOffer = this.slots.getActiveOffer();
+ // Paper start
+ io.papermc.paper.event.player.PlayerPurchaseEvent event = null;
+ if (merchantOffer != null) {
+ if (this.merchant instanceof net.minecraft.world.entity.npc.AbstractVillager && this.merchant.getTradingPlayer().getBukkitEntity() instanceof org.bukkit.entity.Player) {
+ event = new io.papermc.paper.event.player.PlayerTradeEvent((org.bukkit.entity.Player) this.merchant.getTradingPlayer().getBukkitEntity(), (org.bukkit.entity.AbstractVillager) ((net.minecraft.world.entity.npc.AbstractVillager) this.merchant).getBukkitEntity(), merchantOffer.asBukkit(), true, true);
+ } else if (this.merchant instanceof org.bukkit.craftbukkit.inventory.CraftMerchantCustom.MinecraftMerchant && this.merchant.getTradingPlayer().getBukkitEntity() instanceof org.bukkit.entity.Player) {
+ event = new io.papermc.paper.event.player.PlayerPurchaseEvent((org.bukkit.entity.Player) this.merchant.getTradingPlayer().getBukkitEntity(), merchantOffer.asBukkit(), false, true);
+ if (merchantOffer != null && player instanceof net.minecraft.server.level.ServerPlayer serverPlayer) {
+ if (this.merchant instanceof net.minecraft.world.entity.npc.AbstractVillager abstractVillager) {
+ event = new io.papermc.paper.event.player.PlayerTradeEvent(serverPlayer.getBukkitEntity(), (org.bukkit.entity.AbstractVillager) abstractVillager.getBukkitEntity(), merchantOffer.asBukkit(), true, true);
+ } else if (this.merchant instanceof org.bukkit.craftbukkit.inventory.CraftMerchantCustom.MinecraftMerchant) {
+ event = new io.papermc.paper.event.player.PlayerPurchaseEvent(serverPlayer.getBukkitEntity(), merchantOffer.asBukkit(), false, true);
+ }
+ if (event != null) {
+ if (!event.callEvent()) {
@ -193,12 +193,9 @@ index 74b28315197b81f80334ae6023113904e4fac4c3..1fb70ac171788d099e220b8342195897
+ return;
+ }
+ merchantOffer = org.bukkit.craftbukkit.inventory.CraftMerchantRecipe.fromBukkit(event.getTrade()).toMinecraft();
+ } else {
+ // TODO: Check this, I don't see how this would be hit and the logic below should be fired, warn for missing cases?
+ return;
+ }
+ this.checkTakeAchievements(stack);
+ }
+ this.checkTakeAchievements(stack);
+ // Paper end
if (merchantOffer != null) {
ItemStack itemStack = this.slots.getItem(0);
@ -210,19 +207,19 @@ index 74b28315197b81f80334ae6023113904e4fac4c3..1fb70ac171788d099e220b8342195897
this.slots.setItem(0, itemStack);
this.slots.setItem(1, itemStack2);
diff --git a/src/main/java/net/minecraft/world/item/trading/Merchant.java b/src/main/java/net/minecraft/world/item/trading/Merchant.java
index d41f44ed2e497ba3373d170c08488b49e88334c4..5eb54fb8e668e3ae053e33358e5b19e87330a02d 100644
index d41f44ed2e497ba3373d170c08488b49e88334c4..d3a99ba6f3085ad12b67ddc94cc4ab393ec7ecbe 100644
--- a/src/main/java/net/minecraft/world/item/trading/Merchant.java
+++ b/src/main/java/net/minecraft/world/item/trading/Merchant.java
@@ -20,6 +20,7 @@ public interface Merchant {
void overrideOffers(MerchantOffers offers);
+ default void processTrade(MerchantOffer merchantRecipe, io.papermc.paper.event.player.PlayerPurchaseEvent event) { this.notifyTrade(merchantRecipe); } // Paper
+ default void processTrade(MerchantOffer merchantRecipe, @Nullable io.papermc.paper.event.player.PlayerPurchaseEvent event) { this.notifyTrade(merchantRecipe); } // Paper
void notifyTrade(MerchantOffer offer);
void notifyTradeUpdated(ItemStack stack);
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMerchantCustom.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMerchantCustom.java
index 552851cff3678d605428866999951fefd4375d7a..1854d933c90c3ec4b39bdb5c3c177890d9865a1c 100644
index 552851cff3678d605428866999951fefd4375d7a..9f6ce6c4cba1e6fe83fbac129da990748681ce94 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMerchantCustom.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMerchantCustom.java
@@ -79,10 +79,25 @@ public class CraftMerchantCustom extends CraftMerchant {
@ -231,13 +228,13 @@ index 552851cff3678d605428866999951fefd4375d7a..1854d933c90c3ec4b39bdb5c3c177890
+ // Paper start
+ @Override
+ public void processTrade(MerchantOffer merchantRecipe, io.papermc.paper.event.player.PlayerPurchaseEvent event) { // The MerchantRecipe passed in here is the one set by the PlayerPurchaseEvent
+ public void processTrade(MerchantOffer merchantRecipe, @javax.annotation.Nullable io.papermc.paper.event.player.PlayerPurchaseEvent event) { // The MerchantRecipe passed in here is the one set by the PlayerPurchaseEvent
+ /** Based on {@link net.minecraft.world.entity.npc.AbstractVillager#processTrade(MerchantOffer, io.papermc.paper.event.player.PlayerPurchaseEvent)} */
+ if (getTradingPlayer() instanceof net.minecraft.server.level.ServerPlayer) {
+ if (event.willIncreaseTradeUses()) {
+ if (event == null || event.willIncreaseTradeUses()) {
+ merchantRecipe.increaseUses();
+ }
+ if (event.isRewardingExp()) {
+ if (event == null || event.isRewardingExp()) {
+ this.tradingWorld.addFreshEntity(new net.minecraft.world.entity.ExperienceOrb(tradingWorld, tradingPlayer.getX(), tradingPlayer.getY(), tradingPlayer.getZ(), merchantRecipe.getXp(), org.bukkit.entity.ExperienceOrb.SpawnReason.VILLAGER_TRADE, this.tradingPlayer, null));
+ }
+ }