package net.glowstone.net.handler.play.player;
import com.flowpowered.network.MessageHandler;
import net.glowstone.EventFactory;
import net.glowstone.GlowWorld;
import net.glowstone.block.GlowBlock;
import net.glowstone.block.GlowBlockState;
import net.glowstone.block.ItemTable;
import net.glowstone.block.blocktype.BlockContainer;
import net.glowstone.block.blocktype.BlockType;
import net.glowstone.block.itemtype.ItemTimedUsage;
import net.glowstone.block.itemtype.ItemType;
import net.glowstone.entity.GlowPlayer;
import net.glowstone.entity.objects.GlowItem;
import net.glowstone.net.GlowSession;
import net.glowstone.net.message.play.player.DiggingMessage;
import org.bukkit.material.types.DoublePlantSpecies;
import org.bukkit.Effect;
import org.bukkit.GameMode;
import org.bukkit.Material;
import org.bukkit.block.Block;
import org.bukkit.block.BlockFace;
import org.bukkit.enchantments.EnchantmentTarget;
import org.bukkit.event.block.Action;
import org.bukkit.event.block.BlockBreakEvent;
import org.bukkit.event.block.BlockDamageEvent;
import org.bukkit.event.player.PlayerInteractEvent;
import org.bukkit.inventory.ItemStack;
import org.bukkit.material.DoublePlant;
import org.bukkit.material.MaterialData;
import java.util.Collection;
import java.util.Objects;
public final class DiggingHandler implements MessageHandler<GlowSession, DiggingMessage> {
@Override
public void handle(GlowSession session, DiggingMessage message) {
//Todo: Implement SHOOT_ARROW_FINISH_EATING
//Todo: Implement SWAP_ITEM_IN_HAND
GlowPlayer player = session.getPlayer();
GlowWorld world = player.getWorld();
GlowBlock block = world.getBlockAt(message.getX(), message.getY(), message.getZ());
BlockFace face = BlockPlacementHandler.convertFace(message.getFace());
ItemStack holding = player.getItemInHand();
if (block.getRelative(face).getType() == Material.FIRE) {
block.getRelative(face).breakNaturally();
return; // returns to avoid breaking block in creative
}
boolean blockBroken = false;
boolean revert = false;
if (message.getState() == DiggingMessage.START_DIGGING) {
// call interact event
Action action = Action.LEFT_CLICK_BLOCK;
Block eventBlock = block;
if (player.getLocation().distanceSquared(block.getLocation()) > 36 || block.getTypeId() == 0) {
action = Action.LEFT_CLICK_AIR;
eventBlock = null;
}
PlayerInteractEvent interactEvent = EventFactory.onPlayerInteract(player, action, eventBlock, face);
// blocks don't get interacted with on left click, so ignore that
// attempt to use item in hand, that is, dig up the block
if (!BlockPlacementHandler.selectResult(interactEvent.useItemInHand(), true)) {
// the event was cancelled, get out of here
revert = true;
} else if (player.getGameMode() != GameMode.SPECTATOR) {
player.setDigging(null);
// emit damage event - cancel by default if holding a sword
boolean instaBreak = player.getGameMode() == GameMode.CREATIVE || block.getMaterialValues().getHardness() == 0;
BlockDamageEvent damageEvent = new BlockDamageEvent(player, block, player.getItemInHand(), instaBreak);
if (player.getGameMode() == GameMode.CREATIVE && holding != null && EnchantmentTarget.WEAPON.includes(holding.getType())) {
damageEvent.setCancelled(true);
}
EventFactory.callEvent(damageEvent);
// follow orders
if (damageEvent.isCancelled()) {
revert = true;
} else {
// in creative, break even if denied in the event, or the block
// can never be broken (client does not send DONE_DIGGING).
blockBroken = damageEvent.getInstaBreak();
if (!blockBroken) {
/// TODO: add a delay here based on hardness
player.setDigging(block);
}
}
}
} else if (message.getState() == DiggingMessage.FINISH_DIGGING) {
// shouldn't happen in creative mode
// todo: verification against malicious clients
blockBroken = block.equals(player.getDigging());
if (blockBroken && holding.getType().getMaxDurability() != 0 && holding.getType() != Material.AIR && holding.getDurability() != holding.getType().getMaxDurability()) {
switch (block.getType()) {
case GRASS:
case DIRT:
case SAND:
case GRAVEL:
case MYCEL:
case SOUL_SAND:
switch (holding.getType()) {
case WOOD_SPADE:
case STONE_SPADE:
case IRON_SPADE:
case GOLD_SPADE:
case DIAMOND_SPADE:
holding.setDurability((short) (holding.getDurability() + 1));
break;
default:
holding.setDurability((short) (holding.getDurability() + 2));
break;
}
break;
case LOG:
case LOG_2:
case WOOD:
case CHEST:
switch (holding.getType()) {
case WOOD_AXE:
case STONE_AXE:
case IRON_AXE:
case GOLD_AXE:
case DIAMOND_AXE:
holding.setDurability((short) (holding.getDurability() + 1));
break;
default:
holding.setDurability((short) (holding.getDurability() + 2));
break;
}
break;
case STONE:
case COBBLESTONE:
switch (holding.getType()) {
case WOOD_PICKAXE:
case STONE_PICKAXE:
case IRON_PICKAXE:
case GOLD_PICKAXE:
case DIAMOND_PICKAXE:
holding.setDurability((short) (holding.getDurability() + 1));
break;
default:
holding.setDurability((short) (holding.getDurability() + 2));
break;
}
break;
default:
holding.setDurability((short) (holding.getDurability() + 2));
break;
}
if (holding.getType().getMaxDurability() != 0 && holding.getDurability() >= holding.getType().getMaxDurability()) {
player.getItemInHand().setType(Material.AIR);
}
}
player.setDigging(null);
} else if (message.getState() == DiggingMessage.STATE_DROP_ITEM) {
player.dropItemInHand(false);
return;
} else if (message.getState() == DiggingMessage.STATE_DROP_ITEMSTACK) {
player.dropItemInHand(true);
return;
} else if (message.getState() == DiggingMessage.STATE_SHOT_ARROW_FINISH_EATING && player.getUsageItem() != null) {
if (Objects.equals(player.getUsageItem(), holding)) {
ItemType type = ItemTable.instance().getItem(player.getUsageItem().getType());
if (type != null && type instanceof ItemTimedUsage) {
((ItemTimedUsage) type).endUse(player, player.getUsageItem());
} else {
// todo: inform the player that this item cannot be consumed/used
}
} else {
// todo: verification against malicious clients
// todo: inform player their item is wrong
}
return;
} else if (message.getState() == DiggingMessage.SWAP_ITEM_IN_HAND) {
ItemStack main = player.getInventory().getItemInMainHand();
ItemStack off = player.getInventory().getItemInOffHand();
player.getInventory().setItemInOffHand(main);
player.getInventory().setItemInMainHand(off);
player.updateInventory();
return;
} else {
return;
}
if (blockBroken && !revert) {
// fire the block break event
BlockBreakEvent breakEvent = EventFactory.callEvent(new BlockBreakEvent(block, player));
if (breakEvent.isCancelled()) {
BlockPlacementHandler.revert(player, block);
return;
}
MaterialData data = block.getState().getData();
if (data instanceof DoublePlant) {
if (((DoublePlant) data).getSpecies() == DoublePlantSpecies.PLANT_APEX && block.getRelative(BlockFace.DOWN).getState().getData() instanceof DoublePlant) {
block = block.getRelative(BlockFace.DOWN);
}
}
BlockType blockType = ItemTable.instance().getBlock(block.getType());
if (blockType != null) {
blockType.blockDestroy(player, block, face);
}
// destroy the block
if (!block.isEmpty() && !block.isLiquid() && (player.getGameMode() != GameMode.CREATIVE || blockType instanceof BlockContainer) && world.getGameRuleMap().getBoolean("doTileDrops")) {
Collection<ItemStack> drops = blockType.getDrops(block, holding);
if (blockType instanceof BlockContainer && player.getGameMode() == GameMode.CREATIVE) {
drops = ((BlockContainer) blockType).getContentDrops(block);
}
for (ItemStack drop : drops) {
GlowItem item = world.dropItemNaturally(block.getLocation(), drop);
item.setPickupDelay(30);
item.setBias(player);
}
}
player.addExhaustion(0.005f);
// STEP_SOUND actually is the block break particles
world.playEffectExceptTo(block.getLocation(), Effect.STEP_SOUND, block.getTypeId(), 64, player);
GlowBlockState state = block.getState();
block.setType(Material.AIR);
if (blockType != null) {
blockType.afterDestroy(player, block, face, state);
}
} else if (revert) {
// replace the block that wasn't really dug
BlockPlacementHandler.revert(player, block);
} else if (block.getType() != Material.AIR) {
BlockType blockType = ItemTable.instance().getBlock(block.getType());
blockType.leftClickBlock(player, block, holding);
}
}
}