Update

src/main/java/fr/themode/minestom/entity/EntityManager.java

@@ -16,6 +16,7 @@ public class EntityManager {
 
     public void update() {
         for (Instance instance : instanceManager.getInstances()) {
+            // TODO loop chunks and entities on it instead of individual (to have more non-blocking operation)
 
             // Creatures
             for (EntityCreature creature : instance.getCreatures()) {

src/main/java/fr/themode/minestom/entity/Player.java

@@ -6,6 +6,7 @@ import fr.themode.minestom.inventory.PlayerInventory;
 import fr.themode.minestom.item.ItemStack;
 import fr.themode.minestom.net.packet.server.play.*;
 import fr.themode.minestom.net.player.PlayerConnection;
+import fr.themode.minestom.utils.Position;
 
 import java.util.UUID;
 
@@ -24,6 +25,9 @@ public class Player extends LivingEntity {
     private short heldSlot;
     private Inventory openInventory;
 
+    private Position targetBlockPosition;
+    private long targetBlockTime;
+
     // TODO set proper UUID
     public Player(UUID uuid, String username, PlayerConnection playerConnection) {
         this.uuid = uuid;
@@ -35,7 +39,26 @@ public class Player extends LivingEntity {
 
     @Override
     public void update() {
-        // System.out.println("Je suis l'update");
+
+        // Target block stage
+        if (instance != null && targetBlockPosition != null) {
+            int timeBreak = 750; // In ms
+            int animationCount = 10;
+            long since = System.currentTimeMillis() - targetBlockTime;
+            byte stage = (byte) (since / (timeBreak / animationCount));
+            BlockBreakAnimationPacket breakAnimationPacket = new BlockBreakAnimationPacket();
+            breakAnimationPacket.entityId = getEntityId() + 1;
+            breakAnimationPacket.blockPosition = targetBlockPosition;
+            breakAnimationPacket.destroyStage = stage;
+            if (stage > 9) {
+                instance.setBlock(targetBlockPosition.getX(), targetBlockPosition.getY(), targetBlockPosition.getZ(), (short) 0);
+                refreshTargetBlock(null);
+            }
+            playerConnection.sendPacket(breakAnimationPacket); // TODO send to all online players
+        }
+
+
+        // Multiplayer sync
         EntityTeleportPacket entityTeleportPacket = new EntityTeleportPacket();
         entityTeleportPacket.entityId = getEntityId();
         entityTeleportPacket.x = x;
@@ -51,6 +74,11 @@ public class Player extends LivingEntity {
         playerConnection.sendPacket(new UpdateViewPositionPacket(Math.floorDiv((int) x, 16), Math.floorDiv((int) z, 16)));
     }
 
+    public void sendMessage(String message) {
+        ChatMessagePacket chatMessagePacket = new ChatMessagePacket("{\"text\": \"" + message + "\"}", ChatMessagePacket.Position.CHAT);
+        playerConnection.sendPacket(chatMessagePacket);
+    }
+
     public void teleport(double x, double y, double z) {
         PlayerPositionAndLookPacket positionAndLookPacket = new PlayerPositionAndLookPacket();
         positionAndLookPacket.x = x;
@@ -172,6 +200,11 @@ public class Player extends LivingEntity {
         this.openInventory = openInventory;
     }
 
+    public void refreshTargetBlock(Position targetBlockPosition) {
+        this.targetBlockPosition = targetBlockPosition;
+        this.targetBlockTime = targetBlockPosition == null ? 0 : System.currentTimeMillis();
+    }
+
     public long getLastKeepAlive() {
         return lastKeepAlive;
     }

src/main/java/fr/themode/minestom/instance/Block.java

@@ -2,36 +2,22 @@ package fr.themode.minestom.instance;
 
 public class Block {
 
-    private short typeAndDamage;
+    private short type;
 
-    public Block(int type) {
-        this.typeAndDamage = (short) (type & 0x0FFF);
-        this.typeAndDamage |= (0 << 12) & 0xF000;
+    public Block(short type) {
+        this.type = type;
     }
 
-    public Block(int type, int damage) {
-        this.typeAndDamage = (short) (type & 0x0FFF);
-        this.typeAndDamage |= (damage << 12) & 0xF000;
+    public short getType() {
+        return type;
     }
 
-    public int getType() {
-        return typeAndDamage & 0x0FFF;
-    }
-
-    public void setType(int type) {
-        this.typeAndDamage |= type & 0x0FFF;
-    }
-
-    public int getDamage() {
-        return (typeAndDamage & 0xF000) >>> 12;
-    }
-
-    public void setDamage(int damage) {
-        this.typeAndDamage |= (damage << 12) & 0xF000;
+    public void setType(short type) {
+        this.type = type;
     }
 
     @Override
     public String toString() {
-        return String.format("CustomBlock{type=%s, damage=%s}", getType(), getDamage());
+        return String.format("CustomBlock{type=%s}", type);
     }
 }

src/main/java/fr/themode/minestom/instance/BlockBatch.java

@@ -19,7 +19,7 @@ public class BlockBatch {
         this.instance = instance;
     }
 
-    public synchronized void setBlock(int x, int y, int z, Block block) {
+    public synchronized void setBlock(int x, int y, int z, short blockId) {
         final int chunkX = Math.floorDiv(x, 16);
         final int chunkZ = Math.floorDiv(z, 16);
         Chunk chunk = this.instance.getChunk(chunkX, chunkZ);
@@ -31,7 +31,7 @@ public class BlockBatch {
         data.x = x % 16;
         data.y = y;
         data.z = z % 16;
-        data.block = block;
+        data.blockId = blockId;
 
         blockData.add(data);
 
@@ -56,10 +56,10 @@ public class BlockBatch {
     private class BlockData {
 
         private int x, y, z;
-        private Block block;
+        private short blockId;
 
         public void apply(Chunk chunk) {
-            chunk.setBlock(x, y, z, block);
+            chunk.setBlock(x, y, z, blockId);
         }
 
     }

src/main/java/fr/themode/minestom/instance/Chunk.java

@@ -15,7 +15,7 @@ public class Chunk {
     protected Set<Player> players = new CopyOnWriteArraySet<>();
     private int chunkX, chunkZ;
     private Biome biome;
-    private HashMap<Short, Block> blocks = new HashMap<>();
+    private HashMap<Short, Short> blocks = new HashMap<>(); // Index/BlockID
 
     public Chunk(Biome biome, int chunkX, int chunkZ) {
         this.biome = biome;
@@ -23,18 +23,18 @@ public class Chunk {
         this.chunkZ = chunkZ;
     }
 
-    protected void setBlock(int x, int y, int z, Block block) {
+    protected void setBlock(int x, int y, int z, short blockId) {
         short index = (short) (x & 0x000F);
         index |= (y << 4) & 0x0FF0;
         index |= (z << 12) & 0xF000;
-        this.blocks.put(index, block);
+        this.blocks.put(index, blockId);
     }
 
-    public Block getBlock(int x, int y, int z) {
+    public short getBlockId(int x, int y, int z) {
         short index = (short) (x & 0x000F);
         index |= (y << 4) & 0x0FF0;
         index |= (z << 12) & 0xF000;
-        return this.blocks.getOrDefault(index, new Block(0));
+        return this.blocks.getOrDefault(index, (short) 0);
     }
 
     public void addEntity(Entity entity) {
@@ -65,7 +65,7 @@ public class Chunk {
         }
     }
 
-    public HashMap<Short, Block> getBlocks() {
+    public HashMap<Short, Short> getBlocks() {
         return blocks;
     }
 

src/main/java/fr/themode/minestom/instance/Instance.java

@@ -26,7 +26,7 @@ public class Instance {
     }
 
     // TODO BlockBatch with pool
-    public synchronized void setBlock(int x, int y, int z, Block block) {
+    public synchronized void setBlock(int x, int y, int z, short blockId) {
         final int chunkX = Math.floorDiv(x, 16);
         final int chunkZ = Math.floorDiv(z, 16);
         Chunk chunk = getChunk(chunkX, chunkZ);
@@ -34,7 +34,7 @@ public class Instance {
             chunk = createChunk(Biome.VOID, chunkX, chunkZ);
         }
         synchronized (chunk) {
-            chunk.setBlock(x % 16, y, z % 16, block);
+            chunk.setBlock(x % 16, y, z % 16, blockId);
             sendChunkUpdate(chunk);
         }
     }

src/main/java/fr/themode/minestom/inventory/PlayerInventory.java

@@ -8,10 +8,14 @@ import fr.themode.minestom.net.player.PlayerConnection;
 
 import java.util.Arrays;
 
-public class PlayerInventory implements InventoryModifier {
+public class PlayerInventory implements InventoryModifier, InventoryClickHandler {
 
     public static final int INVENTORY_SIZE = 46;
 
+    private static final byte ITEM_MAX_SIZE = 127;
+
+    private static final int OFFSET = 9;
+
     private static final int CRAFT_SLOT_1 = 36;
     private static final int CRAFT_SLOT_2 = 37;
     private static final int CRAFT_SLOT_3 = 38;
@@ -25,6 +29,7 @@ public class PlayerInventory implements InventoryModifier {
 
     private Player player;
     private ItemStack[] items = new ItemStack[INVENTORY_SIZE];
+    private ItemStack cursorItem = ItemStack.AIR_ITEM;
 
     public PlayerInventory(Player player) {
         this.player = player;
@@ -56,15 +61,14 @@ public class PlayerInventory implements InventoryModifier {
                     setItemStack(i, itemStack);
                     return true;
                 } else if (itemStack.isSimilar(item)) {
-                    // TODO check max stack size
                     int itemAmount = item.getAmount();
-                    if (itemAmount == 64)
+                    if (itemAmount == ITEM_MAX_SIZE)
                         continue;
                     int totalAmount = itemStack.getAmount() + itemAmount;
-                    if (totalAmount > 64) {
-                        item.setAmount((byte) 64);
+                    if (totalAmount > ITEM_MAX_SIZE) {
+                        item.setAmount((byte) ITEM_MAX_SIZE);
                         sendSlotRefresh((short) convertToPacketSlot(i), item);
-                        itemStack.setAmount((byte) (totalAmount - 64));
+                        itemStack.setAmount((byte) (totalAmount - ITEM_MAX_SIZE));
                     } else {
                         item.setAmount((byte) totalAmount);
                         sendSlotRefresh((short) convertToPacketSlot(i), item);
@@ -105,12 +109,25 @@ public class PlayerInventory implements InventoryModifier {
         playerConnection.sendPacket(createWindowItemsPacket());
     }
 
+    public void refreshSlot(int slot) {
+        sendSlotRefresh((short) convertToPacketSlot(slot), getItemStack(slot));
+    }
+
+    public ItemStack getCursorItem() {
+        return cursorItem;
+    }
+
+    public void setCursorItem(ItemStack cursorItem) {
+        this.cursorItem = cursorItem;
+    }
+
     private void safeItemInsert(int slot, ItemStack itemStack) {
         synchronized (this) {
             itemStack = itemStack == null ? ItemStack.AIR_ITEM : itemStack;
             this.items[slot] = itemStack;
-            System.out.println("INSERT: " + slot);
-            sendSlotRefresh((short) slot, itemStack);
+            // System.out.println("INSERT: " + slot);
+            //sendSlotRefresh((short) slot, itemStack);
+            update();
         }
     }
 
@@ -126,6 +143,17 @@ public class PlayerInventory implements InventoryModifier {
 
 
     protected int convertSlot(int slot, int offset) {
+        switch (slot) {
+            case 1:
+                return CRAFT_SLOT_1 + 1;
+            case 2:
+                return CRAFT_SLOT_2 + 1;
+            case 3:
+                return CRAFT_SLOT_3 + 1;
+            case 4:
+                return CRAFT_SLOT_4 + 1;
+        }
+        //System.out.println("ENTRY: " + slot + " | " + offset);
         final int rowSize = 9;
         slot -= offset;
         if (slot >= rowSize * 3 && slot < rowSize * 4) {
@@ -133,6 +161,7 @@ public class PlayerInventory implements InventoryModifier {
         } else {
             slot = slot + rowSize;
         }
+        //System.out.println("CONVERT: " + slot);
         return slot;
     }
 
@@ -161,7 +190,6 @@ public class PlayerInventory implements InventoryModifier {
 
     private WindowItemsPacket createWindowItemsPacket() {
         ItemStack[] convertedSlots = new ItemStack[INVENTORY_SIZE];
-        Arrays.fill(convertedSlots, ItemStack.AIR_ITEM); // TODO armor and craft
 
         for (int i = 0; i < items.length; i++) {
             int slot = convertToPacketSlot(i);
@@ -175,4 +203,220 @@ public class PlayerInventory implements InventoryModifier {
         return windowItemsPacket;
     }
 
+    @Override
+    public void leftClick(Player player, int slot) {
+        ItemStack cursorItem = getCursorItem();
+        ItemStack clicked = getItemStack(convertSlot(slot, OFFSET));
+
+        if (!cursorItem.isAir()) {
+            if (slot == 0 || slot == 6 || slot == 7 || slot == 8) {
+                return; // Disable putting item on CRAFTING_RESULT and chestplate/leggings/boots slots
+            }
+        }
+
+        if (cursorItem.isAir() && clicked.isAir())
+            return;
+
+        ItemStack resultCursor;
+        ItemStack resultClicked;
+
+        if (cursorItem.isSimilar(clicked)) {
+            resultCursor = cursorItem.clone();
+            resultClicked = clicked.clone();
+            int totalAmount = cursorItem.getAmount() + clicked.getAmount();
+            if (totalAmount > ITEM_MAX_SIZE) {
+                resultCursor.setAmount((byte) (totalAmount - ITEM_MAX_SIZE));
+                resultClicked.setAmount((byte) ITEM_MAX_SIZE);
+            } else {
+                resultCursor = ItemStack.AIR_ITEM;
+                resultClicked.setAmount((byte) totalAmount);
+            }
+        } else {
+            resultCursor = clicked.clone();
+            resultClicked = cursorItem.clone();
+        }
+
+        setItemStack(slot, OFFSET, resultClicked);
+        setCursorItem(resultCursor);
+    }
+
+    @Override
+    public void rightClick(Player player, int slot) {
+        ItemStack cursorItem = getCursorItem();
+        ItemStack clicked = getItemStack(slot, OFFSET);
+
+        if (!cursorItem.isAir()) {
+            if (slot == 0 || slot == 6 || slot == 7 || slot == 8) {
+                return; // Disable putting item on CRAFTING_RESULT and chestplate/leggings/boots slots
+            }
+        }
+
+        if (cursorItem.isAir() && clicked.isAir())
+            return;
+
+        ItemStack resultCursor;
+        ItemStack resultClicked;
+
+        if (cursorItem.isSimilar(clicked)) {
+            resultClicked = clicked.clone();
+            int amount = clicked.getAmount() + 1;
+            if (amount > ITEM_MAX_SIZE) {
+                return;
+            } else {
+                resultCursor = cursorItem.clone();
+                resultCursor.setAmount((byte) (resultCursor.getAmount() - 1));
+                if (resultCursor.getAmount() < 1)
+                    resultCursor = ItemStack.AIR_ITEM;
+                resultClicked.setAmount((byte) amount);
+            }
+        } else {
+            if (cursorItem.isAir()) {
+                int amount = (int) Math.ceil((double) clicked.getAmount() / 2d);
+                resultCursor = clicked.clone();
+                resultCursor.setAmount((byte) amount);
+                resultClicked = clicked.clone();
+                resultClicked.setAmount((byte) (clicked.getAmount() / 2));
+            } else {
+                if (clicked.isAir()) {
+                    int amount = cursorItem.getAmount();
+                    resultCursor = cursorItem.clone();
+                    resultCursor.setAmount((byte) (amount - 1));
+                    if (resultCursor.getAmount() < 1)
+                        resultCursor = ItemStack.AIR_ITEM;
+                    resultClicked = cursorItem.clone();
+                    resultClicked.setAmount((byte) 1);
+                } else {
+                    resultCursor = clicked.clone();
+                    resultClicked = cursorItem.clone();
+                }
+            }
+        }
+
+        setItemStack(slot, OFFSET, resultClicked);
+        setCursorItem(resultCursor);
+    }
+
+    @Override
+    public void shiftClick(Player player, int slot) {
+        ItemStack clicked = getItemStack(slot, OFFSET);
+
+        if (clicked.isAir())
+            return;
+
+        ItemStack resultClicked = clicked.clone();
+        boolean filled = false;
+        for (int i = 0; i < items.length; i++) {
+            int index = i < 9 ? i + 9 : i - 9;
+            ItemStack item = items[index];
+            if (item.isSimilar(clicked)) {
+                int amount = item.getAmount();
+                if (amount == ITEM_MAX_SIZE)
+                    continue;
+                int totalAmount = resultClicked.getAmount() + amount;
+                if (totalAmount > ITEM_MAX_SIZE) {
+                    item.setAmount((byte) ITEM_MAX_SIZE);
+                    setItemStack(index, item);
+                    resultClicked.setAmount((byte) (totalAmount - ITEM_MAX_SIZE));
+                    filled = false;
+                    continue;
+                } else {
+                    resultClicked.setAmount((byte) totalAmount);
+                    setItemStack(index, resultClicked);
+                    setItemStack(slot, OFFSET, ItemStack.AIR_ITEM);
+                    filled = true;
+                    break;
+                }
+            } else if (item.isAir()) {
+                // Switch
+                setItemStack(index, resultClicked);
+                setItemStack(slot, OFFSET, ItemStack.AIR_ITEM);
+                filled = true;
+                break;
+            }
+        }
+        if (!filled) {
+            setItemStack(slot, OFFSET, resultClicked);
+        }
+    }
+
+    @Override
+    public void changeHeld(Player player, int slot, int key) {
+        if (!getCursorItem().isAir())
+            return;
+
+        ItemStack heldItem = getItemStack(key);
+        ItemStack clicked = getItemStack(slot, OFFSET);
+
+        ItemStack resultClicked;
+        ItemStack resultHeld;
+
+        if (clicked.isAir()) {
+            // Set held item [key] to slot
+            resultClicked = ItemStack.AIR_ITEM;
+            resultHeld = clicked.clone();
+        } else {
+            if (heldItem.isAir()) {
+                // if held item [key] is air then set clicked to held
+                resultClicked = ItemStack.AIR_ITEM;
+                resultHeld = clicked.clone();
+            } else {
+                // Otherwise replace held item and held
+                resultClicked = heldItem.clone();
+                resultHeld = clicked.clone();
+            }
+        }
+
+        setItemStack(slot, OFFSET, resultClicked);
+        setItemStack(key, resultHeld);
+    }
+
+    @Override
+    public void middleClick(Player player, int slot) {
+
+    }
+
+    @Override
+    public void dropOne(Player player, int slot) {
+
+    }
+
+    @Override
+    public void dropItemStack(Player player, int slot) {
+
+    }
+
+    @Override
+    public void doubleClick(Player player, int slot) {
+        ItemStack cursorItem = getCursorItem().clone();
+        if (cursorItem.isAir())
+            return;
+
+        int amount = cursorItem.getAmount();
+
+        if (amount == ITEM_MAX_SIZE)
+            return;
+
+        for (int i = 0; i < items.length; i++) {
+            int index = i < 9 ? i + 9 : i - 9;
+            if (index == slot)
+                continue;
+            if (amount == ITEM_MAX_SIZE)
+                break;
+            ItemStack item = items[index];
+            if (cursorItem.isSimilar(item)) {
+                int totalAmount = amount + item.getAmount();
+                if (totalAmount > ITEM_MAX_SIZE) {
+                    cursorItem.setAmount((byte) ITEM_MAX_SIZE);
+                    item.setAmount((byte) (totalAmount - ITEM_MAX_SIZE));
+                    setItemStack(index, item);
+                } else {
+                    cursorItem.setAmount((byte) totalAmount);
+                    setItemStack(index, ItemStack.AIR_ITEM);
+                }
+                amount = cursorItem.getAmount();
+            }
+        }
+
+        setCursorItem(cursorItem);
+    }
 }

src/main/java/fr/themode/minestom/net/packet/client/login/LoginStartPacket.java

@@ -5,7 +5,6 @@ import fr.themode.minestom.Main;
 import fr.themode.minestom.entity.GameMode;
 import fr.themode.minestom.entity.Player;
 import fr.themode.minestom.entity.demo.ChickenCreature;
-import fr.themode.minestom.instance.Block;
 import fr.themode.minestom.instance.Instance;
 import fr.themode.minestom.inventory.Inventory;
 import fr.themode.minestom.inventory.InventoryType;
@@ -16,10 +15,7 @@ import fr.themode.minestom.net.ConnectionState;
 import fr.themode.minestom.net.packet.client.ClientPreplayPacket;
 import fr.themode.minestom.net.packet.server.login.JoinGamePacket;
 import fr.themode.minestom.net.packet.server.login.LoginSuccessPacket;
-import fr.themode.minestom.net.packet.server.play.PlayerInfoPacket;
-import fr.themode.minestom.net.packet.server.play.PlayerPositionAndLookPacket;
-import fr.themode.minestom.net.packet.server.play.SpawnPlayerPacket;
-import fr.themode.minestom.net.packet.server.play.SpawnPositionPacket;
+import fr.themode.minestom.net.packet.server.play.*;
 import fr.themode.minestom.net.player.PlayerConnection;
 import fr.themode.minestom.utils.Utils;
 import fr.themode.minestom.world.Dimension;
@@ -38,7 +34,7 @@ public class LoginStartPacket implements ClientPreplayPacket {
         instance = Main.getInstanceManager().createInstance();
         for (int x = -64; x < 64; x++)
             for (int z = -64; z < 64; z++) {
-                instance.setBlock(x, 4, z, new Block(10));
+                instance.setBlock(x, 4, z, (short) 10);
             }
     }
 
@@ -153,6 +149,14 @@ public class LoginStartPacket implements ClientPreplayPacket {
         inv.setItemStack(1, new ItemStack(1, (byte) 2));
         inv.updateItems();
 
+
+        EntityEffectPacket entityEffectPacket = new EntityEffectPacket();
+        entityEffectPacket.entityId = player.getEntityId();
+        entityEffectPacket.effectId = 4;
+        entityEffectPacket.amplifier = -1;
+        entityEffectPacket.duration = 3600;
+        entityEffectPacket.flags = 0;
+        connection.sendPacket(entityEffectPacket);
     }
 
     @Override

src/main/java/fr/themode/minestom/net/packet/client/play/ClientChatMessagePacket.java

@@ -4,7 +4,6 @@ import fr.adamaq01.ozao.net.Buffer;
 import fr.themode.minestom.Main;
 import fr.themode.minestom.entity.Player;
 import fr.themode.minestom.net.packet.client.ClientPlayPacket;
-import fr.themode.minestom.net.packet.server.play.ChatMessagePacket;
 import fr.themode.minestom.utils.Utils;
 
 public class ClientChatMessagePacket implements ClientPlayPacket {
@@ -13,8 +12,7 @@ public class ClientChatMessagePacket implements ClientPlayPacket {
 
     @Override
     public void process(Player player) {
-        ChatMessagePacket chatMessagePacket = new ChatMessagePacket(String.format("{\"text\": \"<%s> %s\"}", player.getUsername(), message), ChatMessagePacket.Position.CHAT);
-        Main.getConnectionManager().getOnlinePlayers().forEach(player1 -> player1.getPlayerConnection().sendPacket(chatMessagePacket));
+        Main.getConnectionManager().getOnlinePlayers().forEach(p -> p.sendMessage(String.format("<%s> %s", player.getUsername(), message)));
     }
 
     @Override

src/main/java/fr/themode/minestom/net/packet/client/play/ClientClickWindowPacket.java

@@ -3,6 +3,8 @@ package fr.themode.minestom.net.packet.client.play;
 import fr.adamaq01.ozao.net.Buffer;
 import fr.themode.minestom.entity.Player;
 import fr.themode.minestom.inventory.Inventory;
+import fr.themode.minestom.inventory.InventoryClickHandler;
+import fr.themode.minestom.inventory.PlayerInventory;
 import fr.themode.minestom.item.ItemStack;
 import fr.themode.minestom.net.packet.client.ClientPlayPacket;
 import fr.themode.minestom.net.packet.server.play.ConfirmTransactionPacket;
@@ -20,7 +22,10 @@ public class ClientClickWindowPacket implements ClientPlayPacket {
 
     @Override
     public void process(Player player) {
-        Inventory inventory = player.getOpenInventory();
+        InventoryClickHandler clickHandler = player.getOpenInventory();
+        if (clickHandler == null) {
+            clickHandler = player.getInventory();
+        }
         System.out.println("Window id: " + windowId + " | slot: " + slot + " | button: " + button + " | mode: " + mode);
 
         ConfirmTransactionPacket confirmTransactionPacket = new ConfirmTransactionPacket();
@@ -33,19 +38,19 @@ public class ClientClickWindowPacket implements ClientPlayPacket {
                 switch (button) {
                     case 0:
                         // Left click
-                        inventory.leftClick(player, slot);
+                        clickHandler.leftClick(player, slot);
                         break;
                     case 1:
                         // Right click
-                        inventory.rightClick(player, slot);
+                        clickHandler.rightClick(player, slot);
                         break;
                 }
                 break;
             case 1:
-                inventory.shiftClick(player, slot); // Shift + left/right have identical behavior
+                clickHandler.shiftClick(player, slot); // Shift + left/right have identical behavior
                 break;
             case 2:
-                inventory.changeHeld(player, slot, button);
+                clickHandler.changeHeld(player, slot, button);
                 break;
             case 3:
                 // Middle click (only creative players in non-player inventories)
@@ -57,11 +62,11 @@ public class ClientClickWindowPacket implements ClientPlayPacket {
                 // Dragging
                 break;
             case 6:
-                inventory.doubleClick(player, slot);
+                clickHandler.doubleClick(player, slot);
                 break;
         }
 
-        ItemStack cursorItem = inventory.getCursorItem(player);
+        ItemStack cursorItem = clickHandler instanceof Inventory ? ((Inventory) clickHandler).getCursorItem(player) : ((PlayerInventory) clickHandler).getCursorItem();
         SetSlotPacket setSlotPacket = new SetSlotPacket();
         setSlotPacket.windowId = -1;
         setSlotPacket.slot = -1;

src/main/java/fr/themode/minestom/net/packet/client/play/ClientCloseWindow.java

@@ -2,7 +2,6 @@ package fr.themode.minestom.net.packet.client.play;
 
 import fr.adamaq01.ozao.net.Buffer;
 import fr.themode.minestom.entity.Player;
-import fr.themode.minestom.inventory.Inventory;
 import fr.themode.minestom.net.packet.client.ClientPlayPacket;
 import fr.themode.minestom.utils.Utils;
 
@@ -12,10 +11,8 @@ public class ClientCloseWindow implements ClientPlayPacket {
 
     @Override
     public void process(Player player) {
-        Inventory openInventory = player.getOpenInventory();
         // if windowId == 0 then it is player's inventory, meaning that they hadn't been any open inventory packet
-        if (openInventory != null)
-            player.closeInventory();
+        player.closeInventory();
     }
 
     @Override

src/main/java/fr/themode/minestom/net/packet/client/play/ClientHeldItemChangePacket.java

@@ -17,6 +17,6 @@ public class ClientHeldItemChangePacket implements ClientPlayPacket {
 
     @Override
     public void read(Buffer buffer) {
-        buffer.getShort();
+        this.slot = buffer.getShort();
     }
 }

src/main/java/fr/themode/minestom/net/packet/client/play/ClientPlayerBlockPlacementPacket.java

@@ -2,15 +2,11 @@ package fr.themode.minestom.net.packet.client.play;
 
 import fr.adamaq01.ozao.net.Buffer;
 import fr.themode.minestom.entity.Player;
-import fr.themode.minestom.instance.Block;
-import fr.themode.minestom.instance.BlockBatch;
 import fr.themode.minestom.instance.Instance;
 import fr.themode.minestom.net.packet.client.ClientPlayPacket;
 import fr.themode.minestom.utils.Position;
 import fr.themode.minestom.utils.Utils;
 
-import java.util.Random;
-
 public class ClientPlayerBlockPlacementPacket implements ClientPlayPacket {
 
     public Hand hand;
@@ -25,14 +21,21 @@ public class ClientPlayerBlockPlacementPacket implements ClientPlayPacket {
         if (instance == null)
             return;
 
-        Random random = new Random();
+        int offsetX = blockFace == ClientPlayerDiggingPacket.BlockFace.WEST ? -1 : blockFace == ClientPlayerDiggingPacket.BlockFace.EAST ? 1 : 0;
+        int offsetY = blockFace == ClientPlayerDiggingPacket.BlockFace.BOTTOM ? -1 : blockFace == ClientPlayerDiggingPacket.BlockFace.TOP ? 1 : 0;
+        int offsetZ = blockFace == ClientPlayerDiggingPacket.BlockFace.NORTH ? -1 : blockFace == ClientPlayerDiggingPacket.BlockFace.SOUTH ? 1 : 0;
+
+        instance.setBlock(position.getX() + offsetX, position.getY() + offsetY, position.getZ() + offsetZ, (short) 1);
+        player.getInventory().refreshSlot(player.getHeldSlot());
+        // TODO consume block in hand for survival players
+        /*Random random = new Random();
         BlockBatch blockBatch = instance.createBlockBatch();
         for (int x = -64; x < 64; x++)
             for (int z = -64; z < 64; z++) {
                 if (random.nextInt(100) > 75)
                     blockBatch.setBlock(x, position.getY() + 1, z, new Block(1));
             }
-        blockBatch.flush();
+        blockBatch.flush();*/
     }
 
     @Override

src/main/java/fr/themode/minestom/net/packet/client/play/ClientPlayerDiggingPacket.java

@@ -3,7 +3,6 @@ package fr.themode.minestom.net.packet.client.play;
 import fr.adamaq01.ozao.net.Buffer;
 import fr.themode.minestom.entity.GameMode;
 import fr.themode.minestom.entity.Player;
-import fr.themode.minestom.instance.Block;
 import fr.themode.minestom.instance.Instance;
 import fr.themode.minestom.net.packet.client.ClientPlayPacket;
 import fr.themode.minestom.utils.Position;
@@ -22,10 +21,19 @@ public class ClientPlayerDiggingPacket implements ClientPlayPacket {
                 if (player.getGameMode() == GameMode.CREATIVE) {
                     Instance instance = player.getInstance();
                     if (instance != null) {
-                        instance.setBlock(position.getX(), position.getY(), position.getZ(), new Block(0));
+                        instance.setBlock(position.getX(), position.getY(), position.getZ(), (short) 0);
                     }
+                } else if (player.getGameMode() == GameMode.SURVIVAL) {
+                    player.refreshTargetBlock(position);
+                    // TODO survival mining
                 }
                 break;
+            case CANCELLED_DIGGING:
+                player.refreshTargetBlock(null);
+                break;
+            case FINISHED_DIGGING:
+                player.refreshTargetBlock(null);
+                break;
         }
     }
 

src/main/java/fr/themode/minestom/net/packet/server/play/AcknowledgePlayerDiggingPacket.java

@@ -0,0 +1,28 @@
+package fr.themode.minestom.net.packet.server.play;
+
+import fr.adamaq01.ozao.net.Buffer;
+import fr.themode.minestom.net.packet.client.play.ClientPlayerDiggingPacket;
+import fr.themode.minestom.net.packet.server.ServerPacket;
+import fr.themode.minestom.utils.Position;
+import fr.themode.minestom.utils.Utils;
+
+public class AcknowledgePlayerDiggingPacket implements ServerPacket {
+
+    public Position position;
+    public int blockStateId;
+    public ClientPlayerDiggingPacket.Status status;
+    public boolean successful;
+
+    @Override
+    public void write(Buffer buffer) {
+        Utils.writePosition(buffer, position);
+        Utils.writeVarInt(buffer, blockStateId);
+        Utils.writeVarInt(buffer, status.ordinal());
+        buffer.putBoolean(successful);
+    }
+
+    @Override
+    public int getId() {
+        return 0x5c;
+    }
+}

src/main/java/fr/themode/minestom/net/packet/server/play/BlockBreakAnimationPacket.java

@@ -0,0 +1,25 @@
+package fr.themode.minestom.net.packet.server.play;
+
+import fr.adamaq01.ozao.net.Buffer;
+import fr.themode.minestom.net.packet.server.ServerPacket;
+import fr.themode.minestom.utils.Position;
+import fr.themode.minestom.utils.Utils;
+
+public class BlockBreakAnimationPacket implements ServerPacket {
+
+    public int entityId;
+    public Position blockPosition;
+    public byte destroyStage;
+
+    @Override
+    public void write(Buffer buffer) {
+        Utils.writeVarInt(buffer, entityId);
+        Utils.writePosition(buffer, blockPosition);
+        buffer.putByte(destroyStage);
+    }
+
+    @Override
+    public int getId() {
+        return 0x08;
+    }
+}

src/main/java/fr/themode/minestom/net/packet/server/play/ChunkDataPacket.java

@@ -1,7 +1,6 @@
 package fr.themode.minestom.net.packet.server.play;
 
 import fr.adamaq01.ozao.net.Buffer;
-import fr.themode.minestom.instance.Block;
 import fr.themode.minestom.instance.Chunk;
 import fr.themode.minestom.net.packet.server.ServerPacket;
 import fr.themode.minestom.utils.Utils;
@@ -30,7 +29,7 @@ public class ChunkDataPacket implements ServerPacket {
         for (int i = 0; i < 16; i++) {
             // TODO if fullchunk is false then only send changed sections
             mask |= 1 << i;
-            Block[] section = getSection(chunk, i);
+            Short[] section = getSection(chunk, i);
             Utils.writeBlocks(blocks, section, 14);
         }
         // Biome data
@@ -73,13 +72,13 @@ public class ChunkDataPacket implements ServerPacket {
         Utils.writeVarInt(buffer, 0);
     }
 
-    private Block[] getSection(Chunk chunk, int section) {
-        Block[] blocks = new Block[16 * 16 * 16];
+    private Short[] getSection(Chunk chunk, int section) {
+        Short[] blocks = new Short[16 * 16 * 16];
         for (int y = 0; y < 16; y++) {
             for (int x = 0; x < 16; x++) {
                 for (int z = 0; z < 16; z++) {
                     int index = (((y * 16) + x) * 16) + z;
-                    blocks[index] = chunk.getBlock(x, y + 16 * section, z);
+                    blocks[index] = chunk.getBlockId(x, y + 16 * section, z);
                 }
             }
         }

src/main/java/fr/themode/minestom/net/packet/server/play/EntityEffectPacket.java

@@ -0,0 +1,28 @@
+package fr.themode.minestom.net.packet.server.play;
+
+import fr.adamaq01.ozao.net.Buffer;
+import fr.themode.minestom.net.packet.server.ServerPacket;
+import fr.themode.minestom.utils.Utils;
+
+public class EntityEffectPacket implements ServerPacket {
+
+    public int entityId;
+    public byte effectId;
+    public byte amplifier;
+    public int duration;
+    public byte flags;
+
+    @Override
+    public void write(Buffer buffer) {
+        Utils.writeVarInt(buffer, entityId);
+        buffer.putByte(effectId);
+        buffer.putByte(amplifier);
+        Utils.writeVarInt(buffer, duration);
+        buffer.putByte(flags);
+    }
+
+    @Override
+    public int getId() {
+        return 0x59;
+    }
+}

src/main/java/fr/themode/minestom/net/packet/server/play/RemoveEntityEffectPacket.java

@@ -0,0 +1,22 @@
+package fr.themode.minestom.net.packet.server.play;
+
+import fr.adamaq01.ozao.net.Buffer;
+import fr.themode.minestom.net.packet.server.ServerPacket;
+import fr.themode.minestom.utils.Utils;
+
+public class RemoveEntityEffectPacket implements ServerPacket {
+
+    public int entityId;
+    public byte effectId;
+
+    @Override
+    public void write(Buffer buffer) {
+        Utils.writeVarInt(buffer, entityId);
+        buffer.putByte(effectId);
+    }
+
+    @Override
+    public int getId() {
+        return 0x38;
+    }
+}

src/main/java/fr/themode/minestom/utils/Position.java

@@ -33,4 +33,9 @@ public class Position {
     public void setZ(int z) {
         this.z = z;
     }
+
+    @Override
+    public String toString() {
+        return "Position[" + x + ":" + y + ":" + z + "]";
+    }
 }

src/main/java/fr/themode/minestom/utils/Utils.java

@@ -1,7 +1,6 @@
 package fr.themode.minestom.utils;
 
 import fr.adamaq01.ozao.net.Buffer;
-import fr.themode.minestom.instance.Block;
 import fr.themode.minestom.item.ItemStack;
 
 import java.io.UnsupportedEncodingException;
@@ -122,7 +121,11 @@ public class Utils {
     }
 
     public static void writePosition(Buffer buffer, int x, int y, int z) {
-        buffer.putLong(((x & 0x3FFFFFF) << 38) | ((z & 0x3FFFFFF) << 12) | (y & 0xFFF));
+        buffer.putLong((((long) x & 0x3FFFFFF) << 38) | (((long) z & 0x3FFFFFF) << 12) | ((long) y & 0xFFF));
+    }
+
+    public static void writePosition(Buffer buffer, Position position) {
+        writePosition(buffer, position.getX(), position.getY(), position.getZ());
     }
 
     public static Position readPosition(Buffer buffer) {
@@ -144,8 +147,8 @@ public class Utils {
         }
     }
 
-    public static void writeBlocks(Buffer buffer, Block[] blocks, int bitsPerEntry) {
-        buffer.putShort((short) Arrays.stream(blocks).filter(customBlock -> customBlock.getType() != 0).collect(Collectors.toList()).size());
+    public static void writeBlocks(Buffer buffer, Short[] blocksId, int bitsPerEntry) {
+        buffer.putShort((short) Arrays.stream(blocksId).filter(customBlock -> customBlock != 0).collect(Collectors.toList()).size());
         buffer.putByte((byte) bitsPerEntry);
         int[] blocksData = new int[16 * 16 * 16];
         for (int y = 0; y < 16; y++) {
@@ -153,7 +156,7 @@ public class Utils {
                 for (int z = 0; z < 16; z++) {
                     int sectionIndex = (((y * 16) + x) * 16) + z;
                     int index = y << 8 | z << 4 | x;
-                    blocksData[index] = blocks[sectionIndex].getType();
+                    blocksData[index] = blocksId[sectionIndex];
                 }
             }
         }