#919: Add internal ItemType and BlockType, delegate Material methods to them

By: Jishuna <joshl5324@gmail.com>
Also-by: Bjarne Koll <lynxplay101@gmail.com>
Also-by: DerFrZocker <derrieple@gmail.com>
Also-by: md_5 <git@md-5.net>

paper-api/src/main/java/org/bukkit/Registry.java

@@ -12,6 +12,7 @@ import java.util.stream.StreamSupport;
 import org.bukkit.advancement.Advancement;
 import org.bukkit.attribute.Attribute;
 import org.bukkit.block.Biome;
+import org.bukkit.block.BlockType;
 import org.bukkit.block.banner.PatternType;
 import org.bukkit.boss.KeyedBossBar;
 import org.bukkit.damage.DamageType;
@@ -24,6 +25,7 @@ import org.bukkit.entity.Wolf;
 import org.bukkit.entity.memory.MemoryKey;
 import org.bukkit.generator.structure.Structure;
 import org.bukkit.generator.structure.StructureType;
+import org.bukkit.inventory.ItemType;
 import org.bukkit.inventory.meta.trim.TrimMaterial;
 import org.bukkit.inventory.meta.trim.TrimPattern;
 import org.bukkit.loot.LootTables;
@@ -92,6 +94,14 @@ public interface Registry<T extends Keyed> extends Iterable<T> {
      * @see Biome
      */
     Registry<Biome> BIOME = new SimpleRegistry<>(Biome.class);
+    /**
+     * Server block types.
+     *
+     * @see BlockType
+     * @apiNote BlockType is not ready for public usage yet
+     */
+    @ApiStatus.Internal
+    Registry<BlockType> BLOCK = Objects.requireNonNull(Bukkit.getRegistry(BlockType.class), "No registry present for BlockType. This is a bug.");
     /**
      * Custom boss bars.
      *
@@ -142,6 +152,14 @@ public interface Registry<T extends Keyed> extends Iterable<T> {
      * @see MusicInstrument
      */
     Registry<MusicInstrument> INSTRUMENT = Objects.requireNonNull(Bukkit.getRegistry(MusicInstrument.class), "No registry present for MusicInstrument. This is a bug.");
+    /**
+     * Server item types.
+     *
+     * @see ItemType
+     * @apiNote ItemType is not ready for public usage yet
+     */
+    @ApiStatus.Internal
+    Registry<ItemType> ITEM = Objects.requireNonNull(Bukkit.getRegistry(ItemType.class), "No registry present for ItemType. This is a bug.");
     /**
      * Default server loot tables.
      *

paper-api/src/main/java/org/bukkit/packs/DataPackManager.java

@@ -4,7 +4,9 @@ import java.util.Collection;
 import org.bukkit.Material;
 import org.bukkit.NamespacedKey;
 import org.bukkit.World;
+import org.bukkit.block.BlockType;
 import org.bukkit.entity.EntityType;
+import org.bukkit.inventory.ItemType;
 import org.jetbrains.annotations.ApiStatus;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
@@ -59,6 +61,28 @@ public interface DataPackManager {
      */
     public boolean isEnabledByFeature(@NotNull Material material, @NotNull World world);
 
+    /**
+     * Gets if the ItemType is enabled for use by the features in World.
+     *
+     * @param itemType ItemType to check
+     * @param world World to check
+     * @return {@code True} if the ItemType is enabled
+     * @apiNote this method is not ready for public usage yet
+     */
+    @ApiStatus.Internal
+    public boolean isEnabledByFeature(@NotNull ItemType itemType, @NotNull World world);
+
+    /**
+     * Gets if the BlockType is enabled for use by the features in World.
+     *
+     * @param blockType BlockType to check
+     * @param world World to check
+     * @return {@code True} if the BlockType is enabled
+     * @apiNote this method is not ready for public usage yet
+     */
+    @ApiStatus.Internal
+    public boolean isEnabledByFeature(@NotNull BlockType blockType, @NotNull World world);
+
     /**
      * Gets if the EntityType is enabled for use by the Features in World.
      *

paper-api/src/test/java/org/bukkit/scoreboard/CriteriaTest.java

@@ -1,6 +1,7 @@
 package org.bukkit.scoreboard;
 
 import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.Mockito.*;
 import org.bukkit.Material;
 import org.bukkit.Statistic;
 import org.bukkit.entity.EntityType;
@@ -11,12 +12,20 @@ public class CriteriaTest extends AbstractTestingBase {
 
     @Test
     public void testStatistic() {
+        Material item = mock();
+        when(item.isItem()).thenReturn(true);
+        when(item.isBlock()).thenReturn(false);
+
+        Material block = mock();
+        when(block.isItem()).thenReturn(false);
+        when(block.isBlock()).thenReturn(true);
+
         assertThrows(IllegalArgumentException.class, () -> Criteria.statistic(Statistic.AVIATE_ONE_CM, Material.STONE)); // Generic statistic with block
         assertThrows(IllegalArgumentException.class, () -> Criteria.statistic(Statistic.AVIATE_ONE_CM, EntityType.CREEPER)); // Generic statistic with entity type
 
         assertThrows(IllegalArgumentException.class, () -> Criteria.statistic(Statistic.ENTITY_KILLED_BY, Material.AMETHYST_SHARD)); // Entity statistic with material
-        assertThrows(IllegalArgumentException.class, () -> Criteria.statistic(Statistic.MINE_BLOCK, Material.DIAMOND_PICKAXE)); // Block statistic with item
-        assertThrows(IllegalArgumentException.class, () -> Criteria.statistic(Statistic.BREAK_ITEM, Material.WATER)); // Item statistic with block
+        assertThrows(IllegalArgumentException.class, () -> Criteria.statistic(Statistic.MINE_BLOCK, item)); // Block statistic with item
+        assertThrows(IllegalArgumentException.class, () -> Criteria.statistic(Statistic.BREAK_ITEM, block)); // Item statistic with block
         assertThrows(IllegalArgumentException.class, () -> Criteria.statistic(Statistic.KILL_ENTITY, Material.STONE)); // Entity statistic with Material
     }
 }