feat:some patches

Author: wdog5

nms-patches/net/minecraft/world/entity/item/EntityItem.patch

@@ -3,13 +3,19 @@
 import net.minecraft.world.InteractionResult;
 import net.minecraft.world.entity.monster.Bogged;
 import net.minecraft.world.entity.monster.Vex;
+import net.minecraft.world.item.ItemStack;
 import net.minecraft.world.item.Items;
 import net.neoforged.bus.api.SubscribeEvent;
 import net.neoforged.fml.common.EventBusSubscriber;
+import net.neoforged.neoforge.event.entity.item.ItemExpireEvent;
 import net.neoforged.neoforge.event.entity.living.LivingChangeTargetEvent;
+import net.neoforged.neoforge.event.entity.player.ItemEntityPickupEvent;
 import net.neoforged.neoforge.event.entity.player.PlayerInteractEvent;
 import net.neoforged.neoforge.internal.versions.neoforge.NeoForgeVersion;
+import org.bukkit.craftbukkit.event.CraftEventFactory;
+import org.bukkit.event.entity.EntityPickupItemEvent;
 import org.bukkit.event.entity.EntityTargetEvent;
+import org.bukkit.event.player.PlayerPickupItemEvent;
 
 @EventBusSubscriber(modid = NeoForgeVersion.MOD_ID)
 public class EntityEventDispatcher {
@@ -39,4 +45,63 @@ public static void onEntityTarget(LivingChangeTargetEvent event) {
             vex.bridge$pushGoalTargetReason(EntityTargetEvent.TargetReason.OWNER_ATTACKED_TARGET, true);
         }
     }
+
+    @SubscribeEvent
+    public static void onItemExpire(ItemExpireEvent event) {
+        var entity = event.getEntity();
+        // CraftBukkit start - fire ItemDespawnEvent
+        if (CraftEventFactory.callItemDespawnEvent(entity).isCancelled()) {
+            entity.age = 0;
+            return;
+        }
+        // CraftBukkit end
+    }
+
+    @SubscribeEvent
+    public static void onItemPickup(ItemEntityPickupEvent.Post event) {
+        var itemEntity = event.getItemEntity();
+        var player = event.getPlayer();
+        var itemstack = event.getOriginalStack();
+        int i = itemstack.getCount();
+        // CraftBukkit start - fire PlayerPickupItemEvent
+        int canHold = player.getInventory().canHold(itemstack);
+        int remaining = i - canHold;
+
+        if (itemEntity.pickupDelay <= 0 && canHold > 0) {
+            itemstack.setCount(canHold);
+            // Call legacy event
+            PlayerPickupItemEvent playerEvent = new PlayerPickupItemEvent((org.bukkit.entity.Player) player.getBukkitEntity(), (org.bukkit.entity.Item) itemEntity.getBukkitEntity(), remaining);
+            playerEvent.setCancelled(!playerEvent.getPlayer().getCanPickupItems());
+            itemEntity.level().getCraftServer().getPluginManager().callEvent(playerEvent);
+            if (playerEvent.isCancelled()) {
+                itemstack.setCount(i); // SPIGOT-5294 - restore count
+                return;
+            }
+
+            // Call newer event afterwards
+            EntityPickupItemEvent entityEvent = new EntityPickupItemEvent((org.bukkit.entity.Player) player.getBukkitEntity(), (org.bukkit.entity.Item) itemEntity.getBukkitEntity(), remaining);
+            entityEvent.setCancelled(!entityEvent.getEntity().getCanPickupItems());
+            itemEntity.level().getCraftServer().getPluginManager().callEvent(entityEvent);
+            if (entityEvent.isCancelled()) {
+                itemstack.setCount(i); // SPIGOT-5294 - restore count
+                return;
+            }
+
+            // Update the ItemStack if it was changed in the event
+            ItemStack current = itemEntity.getItem();
+            if (!itemstack.equals(current)) {
+                itemstack = current;
+            } else {
+                itemstack.setCount(canHold + remaining); // = i
+            }
+
+            // Possibly < 0; fix here so we do not have to modify code below
+            itemEntity.pickupDelay = 0;
+        } else if (itemEntity.pickupDelay == 0) {
+            // ensure that the code below isn't triggered if canHold says we can't pick the items up
+            itemEntity.pickupDelay = -1;
+        }
+        // CraftBukkit end
+    }
+
 }