Paper/patches/server/0904-Add-getDrops-to-BlockState-and-isPreferredTool-to-Bl.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: MelnCat <melncatuwu@gmail.com>
Date: Fri, 12 Aug 2022 23:24:37 -0700
Subject: [PATCH] Add getDrops to BlockState and isPreferredTool to BlockData


diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftBlockState.java b/src/main/java/org/bukkit/craftbukkit/block/CraftBlockState.java
index 966ac60daebb7bb211ab8096fc0c5f33db67320a..a8ab1d3ee81664193be39d2735d6495136e0e310 100644
--- a/src/main/java/org/bukkit/craftbukkit/block/CraftBlockState.java
+++ b/src/main/java/org/bukkit/craftbukkit/block/CraftBlockState.java
@@ -330,5 +330,33 @@ public class CraftBlockState implements BlockState {
     public boolean isCollidable() {
         return this.data.getBlock().hasCollision;
     }
+
+    @Override
+    public java.util.Collection<org.bukkit.inventory.ItemStack> getDrops() {
+        return this.getDrops(null);
+    }
+
+    @Override
+    public java.util.Collection<org.bukkit.inventory.ItemStack> getDrops(org.bukkit.inventory.ItemStack item) {
+        return this.getDrops(item, null);
+    }
+
+    @Override
+    public java.util.Collection<org.bukkit.inventory.ItemStack> getDrops(org.bukkit.inventory.ItemStack item, org.bukkit.entity.Entity entity) {
+        net.minecraft.world.item.ItemStack nms = org.bukkit.craftbukkit.inventory.CraftItemStack.asNMSCopy(item);
+
+        // Modelled off EntityHuman#hasBlock
+        if (item == null || !data.requiresCorrectToolForDrops() || nms.isCorrectToolForDrops(data)) {
+            return net.minecraft.world.level.block.Block.getDrops(
+                data,
+                world.getHandle(),
+                position,
+                world.getHandle().getBlockEntity(position), entity == null ? null :
+                    ((org.bukkit.craftbukkit.entity.CraftEntity) entity).getHandle(), nms
+            ).stream().map(org.bukkit.craftbukkit.inventory.CraftItemStack::asBukkitCopy).toList();
+        } else {
+            return java.util.Collections.emptyList();
+        }
+    }
     // Paper end
 }
diff --git a/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java b/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java
index 5f0acece20208047e9d17b6e72d77a5f80cb125f..e14a06bcd35422a692254b69d195d8452f43c7fb 100644
--- a/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java
+++ b/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java
@@ -623,4 +623,12 @@ public class CraftBlockData implements BlockData {
         return this.state.isRandomlyTicking();
     }
     // Paper end
+
+    // Paper start - Preferred tool API
+    @Override
+    public boolean isPreferredTool(org.bukkit.inventory.ItemStack item) {
+        net.minecraft.world.item.ItemStack nms = org.bukkit.craftbukkit.inventory.CraftItemStack.asNMSCopy(item);
+        return !state.requiresCorrectToolForDrops() || nms.isCorrectToolForDrops(state);
+    }
+    // Paper end
 }