Added vein mining and shared drops. Enhanced mining efficiency and teamwork mechanics.

src/main/java/net/krituximon/stalinium/item/StaliniumPickaxeItem.java

@@ -1,13 +1,82 @@
 package net.krituximon.stalinium.item;
 
+import net.minecraft.core.BlockPos;
+import net.minecraft.core.Direction;
+import net.minecraft.server.level.ServerLevel;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.tags.TagKey;
+import net.minecraft.util.RandomSource;
 import net.minecraft.world.entity.LivingEntity;
-import net.minecraft.world.item.*;
+import net.minecraft.world.entity.player.Player;
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.item.PickaxeItem;
+import net.minecraft.world.item.Tier;
+import net.minecraft.world.level.Level;
+import net.minecraft.world.level.block.Block;
+import net.minecraft.world.level.block.DropExperienceBlock;
+import net.minecraft.world.level.block.state.BlockState;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.core.registries.Registries;
+
+import java.util.*;
 
 public class StaliniumPickaxeItem extends PickaxeItem {
-    public StaliniumPickaxeItem(Tier tier, Item.Properties properties) {
+    private static final TagKey<Block> ORE_TAG =
+            TagKey.create(Registries.BLOCK, ResourceLocation.fromNamespaceAndPath("minecraft", "ores"));
+
+    public StaliniumPickaxeItem(Tier tier, Properties properties) {
         super(tier, properties);
     }
 
+    @Override
+    public boolean mineBlock(ItemStack stack,
+                             Level level,
+                             BlockState state,
+                             BlockPos pos,
+                             LivingEntity miner) {
+        if (!level.isClientSide && state.getBlock() instanceof DropExperienceBlock && miner instanceof Player player) {
+            mineVein(player, level, pos, state.getBlock());
+        }
+        List<Player> comrades = level.getEntitiesOfClass(
+                Player.class,
+                miner.getBoundingBox().inflate(8),
+                p -> p instanceof ServerPlayer && miner.isAlliedTo(p)
+        );
+        RandomSource rand = level.getRandom();
+        if (rand.nextFloat() < 0.5f) {
+            for (ItemStack drop : Block.getDrops(state, (ServerLevel) level, pos, null)) {
+                for (Player buddy : comrades) {
+                    buddy.addItem(drop.copy());
+                }
+            }
+        }
+        return super.mineBlock(stack, level, state, pos, miner);
+    }
+
+    private void mineVein(Player player,
+                          Level level,
+                          BlockPos start,
+                          Block block) {
+        Set<BlockPos> toBreak = new HashSet<>();
+        Deque<BlockPos> queue = new ArrayDeque<>();
+        queue.add(start);
+        while (!queue.isEmpty() && toBreak.size() < 128) {
+            BlockPos here = queue.removeFirst();
+            if (toBreak.add(here)) {
+                for (Direction d : Direction.values()) {
+                    BlockPos next = here.relative(d);
+                    if (level.getBlockState(next).is(block)) {
+                        queue.add(next);
+                    }
+                }
+            }
+        }
+
+        for (BlockPos p : toBreak) {
+            level.destroyBlock(p, true, player);
+        }
+    }
+
     @Override
     public boolean hurtEnemy(ItemStack stack, LivingEntity target, LivingEntity attacker) {
         return true;
@@ -23,4 +92,3 @@ public class StaliniumPickaxeItem extends PickaxeItem {
         return false;
     }
 }
-