Migrate Carpet Mixin names to mojang mappings

src/main/java/carpet/mixins/Inventory_scarpetEventMixin.java

@@ -0,0 +1,42 @@
+package carpet.mixins;
+
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+import static carpet.script.CarpetEventServer.Event.PLAYER_PICKS_UP_ITEM;
+
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.world.entity.player.Inventory;
+import net.minecraft.world.entity.player.Player;
+import net.minecraft.world.item.Item;
+import net.minecraft.world.item.ItemStack;
+
+@Mixin(Inventory.class)
+public abstract class Inventory_scarpetEventMixin
+{
+    @Shadow @Final public Player player;
+
+    @Redirect(method = "add(Lnet/minecraft/world/item/ItemStack;)Z", at = @At(
+            value = "INVOKE",
+            target = "Lnet/minecraft/world/entity/player/Inventory;add(ILnet/minecraft/world/item/ItemStack;)Z"
+    ))
+    private boolean onItemAcquired(Inventory playerInventory, int slot, ItemStack stack)
+    {
+        if (!PLAYER_PICKS_UP_ITEM.isNeeded() || !(player instanceof ServerPlayer))
+            return playerInventory.add(-1, stack);
+        Item item = stack.getItem();
+        int count = stack.getCount();
+        boolean res = playerInventory.add(-1, stack);
+        if (count != stack.getCount()) // res returns false for larger item adding to a almost full ineventory
+        {
+            ItemStack diffStack = new ItemStack(item, count - stack.getCount());
+            diffStack.setTag(stack.getTag());
+            PLAYER_PICKS_UP_ITEM.onItemAction((ServerPlayer) player, null, diffStack);
+        }
+        return res;
+    }
+
+}