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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Mon, 12 Dec 2022 12:14:03 -0800
Subject: [PATCH] Properly track the changed item from dispense events
diff --git a/src/main/java/net/minecraft/core/dispenser/AbstractProjectileDispenseBehavior.java b/src/main/java/net/minecraft/core/dispenser/AbstractProjectileDispenseBehavior.java
index 155bd3d6d9c7d3cac7fd04de8210301251d1e17a..bc2e763a848b4bf7e9598ffe1ca2aa35a9af4677 100644
--- a/src/main/java/net/minecraft/core/dispenser/AbstractProjectileDispenseBehavior.java
+++ b/src/main/java/net/minecraft/core/dispenser/AbstractProjectileDispenseBehavior.java
@@ -23,7 +23,7 @@ public abstract class AbstractProjectileDispenseBehavior extends DefaultDispense
ServerLevel worldserver = pointer.level();
Position iposition = DispenserBlock.getDispensePosition(pointer);
Direction enumdirection = (Direction) pointer.state().getValue(DispenserBlock.FACING);
- Projectile iprojectile = this.getProjectile(worldserver, iposition, stack);
+ // Paper - move down
// CraftBukkit start
// iprojectile.shoot((double) enumdirection.getStepX(), (double) ((float) enumdirection.getStepY() + 0.1F), (double) enumdirection.getStepZ(), this.getPower(), this.getUncertainty());
@@ -52,6 +52,7 @@ public abstract class AbstractProjectileDispenseBehavior extends DefaultDispense
return stack;
}
}
+ Projectile iprojectile = this.getProjectile(worldserver, iposition, CraftItemStack.asNMSCopy(event.getItem())); // Paper - move from above and track changed items in the dispense event
iprojectile.shoot(event.getVelocity().getX(), event.getVelocity().getY(), event.getVelocity().getZ(), this.getPower(), this.getUncertainty());
((Entity) iprojectile).projectileSource = new org.bukkit.craftbukkit.projectiles.CraftBlockProjectileSource(pointer.blockEntity());
diff --git a/src/main/java/net/minecraft/core/dispenser/DispenseItemBehavior.java b/src/main/java/net/minecraft/core/dispenser/DispenseItemBehavior.java
index 58eccc76fe4c24c364e6c634fcca60ab771a5792..e2e1273d787536d2fe1bdbbf8af36eb5ac220599 100644
--- a/src/main/java/net/minecraft/core/dispenser/DispenseItemBehavior.java
+++ b/src/main/java/net/minecraft/core/dispenser/DispenseItemBehavior.java
@@ -241,10 +241,14 @@ public interface DispenseItemBehavior {
idispensebehavior.dispense(pointer, eventStack);
return stack;
}
+ // Paper start - track changed items in the dispense event
+ itemstack1 = CraftItemStack.unwrap(event.getItem()); // unwrap is safe because the stack won't be modified
+ entitytypes = ((SpawnEggItem) itemstack1.getItem()).getType(itemstack1.getTag());
+ // Paper end - track changed item from dispense event
}
try {
- entitytypes.spawn(pointer.level(), stack, (Player) null, pointer.pos().relative(enumdirection), MobSpawnType.DISPENSER, enumdirection != Direction.UP, false);
+ entitytypes.spawn(pointer.level(), itemstack1, (Player) null, pointer.pos().relative(enumdirection), MobSpawnType.DISPENSER, enumdirection != Direction.UP, false); // Paper - track changed item in dispense event
} catch (Exception exception) {
DispenseItemBehavior.LOGGER.error("Error while dispensing spawn egg from dispenser at {}", pointer.pos(), exception); // CraftBukkit - decompile error
return ItemStack.EMPTY;
@@ -299,10 +303,11 @@ public interface DispenseItemBehavior {
}
// CraftBukkit end
+ final ItemStack newStack = CraftItemStack.unwrap(event.getItem()); // Paper - use event itemstack (unwrap is fine here because the stack won't be modified)
Consumer<ArmorStand> consumer = EntityType.appendDefaultStackConfig((entityarmorstand) -> {
entityarmorstand.setYRot(enumdirection.toYRot());
- }, worldserver, stack, (Player) null);
- ArmorStand entityarmorstand = (ArmorStand) EntityType.ARMOR_STAND.spawn(worldserver, stack.getTag(), consumer, blockposition, MobSpawnType.DISPENSER, false, false);
+ }, worldserver, newStack, (Player) null); // Paper - track changed items in the dispense event
+ ArmorStand entityarmorstand = (ArmorStand) EntityType.ARMOR_STAND.spawn(worldserver, newStack.getTag(), consumer, blockposition, MobSpawnType.DISPENSER, false, false); // Paper - track changed items in the dispense event
if (entityarmorstand != null) {
if (shrink) stack.shrink(1); // Paper - actually handle here
@@ -582,7 +587,7 @@ public interface DispenseItemBehavior {
}
SmallFireball entitysmallfireball = new SmallFireball(worldserver, d0, d1, d2, event.getVelocity().getX(), event.getVelocity().getY(), event.getVelocity().getZ());
- entitysmallfireball.setItem(itemstack1);
+ entitysmallfireball.setItem(CraftItemStack.unwrap(event.getItem())); // Paper - track changed items in the dispense event (unwrap is save cause setItem already copies)
entitysmallfireball.projectileSource = new org.bukkit.craftbukkit.projectiles.CraftBlockProjectileSource(pointer.blockEntity());
worldserver.addFreshEntity(entitysmallfireball);
@@ -628,6 +633,7 @@ public interface DispenseItemBehavior {
int y = blockposition.getY();
int z = blockposition.getZ();
BlockState iblockdata = worldserver.getBlockState(blockposition);
+ ItemStack dispensedItem = stack; // Paper - track changed item from the dispense event
// Paper start - correctly check if the bucket place will succeed
/* Taken from SolidBucketItem#emptyContents */
boolean willEmptyContentsSolidBucketItem = dispensiblecontaineritem instanceof net.minecraft.world.item.SolidBucketItem && worldserver.isInWorldBounds(blockposition) && iblockdata.isAir();
@@ -657,12 +663,15 @@ public interface DispenseItemBehavior {
}
}
- dispensiblecontaineritem = (DispensibleContainerItem) CraftItemStack.asNMSCopy(event.getItem()).getItem();
+ // Paper start - track changed item from dispense event
+ dispensedItem = CraftItemStack.unwrap(event.getItem()); // unwrap is safe here as the stack isn't mutated
+ dispensiblecontaineritem = (DispensibleContainerItem) dispensedItem.getItem();
+ // Paper end - track changed item from dispense event
}
// CraftBukkit end
if (dispensiblecontaineritem.emptyContents((Player) null, worldserver, blockposition, (BlockHitResult) null)) {
- dispensiblecontaineritem.checkExtraContent((Player) null, worldserver, stack, blockposition);
+ dispensiblecontaineritem.checkExtraContent((Player) null, worldserver, dispensedItem, blockposition); // Paper - track changed item from dispense event
// CraftBukkit start - Handle stacked buckets
Item item = Items.BUCKET;
stack.shrink(1);
diff --git a/src/main/java/net/minecraft/core/dispenser/ShulkerBoxDispenseBehavior.java b/src/main/java/net/minecraft/core/dispenser/ShulkerBoxDispenseBehavior.java
index 6f2adf2334e35e8a617a4ced0c1af2abf32bbd8d..cb308808906a8cdb127df8284e106e00553473ca 100644
--- a/src/main/java/net/minecraft/core/dispenser/ShulkerBoxDispenseBehavior.java
+++ b/src/main/java/net/minecraft/core/dispenser/ShulkerBoxDispenseBehavior.java
@@ -57,7 +57,12 @@ public class ShulkerBoxDispenseBehavior extends OptionalDispenseItemBehavior {
// CraftBukkit end
try {
- this.setSuccess(((BlockItem) item).place(new DirectionalPlaceContext(pointer.level(), blockposition, enumdirection, stack, enumdirection1)).consumesAction());
+ // Paper start - track changed items in the dispense event
+ this.setSuccess(((BlockItem) item).place(new DirectionalPlaceContext(pointer.level(), blockposition, enumdirection, CraftItemStack.asNMSCopy(event.getItem()), enumdirection1)).consumesAction());
+ if (this.isSuccess()) {
+ stack.shrink(1); // vanilla shrink is in the place function above, manually handle it here
+ }
+ // Paper end - track changed items in the dispense event
} catch (Exception exception) {
ShulkerBoxDispenseBehavior.LOGGER.error("Error trying to place shulker box at {}", blockposition, exception);
}
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