package com.combatbarrier.managers; import com.combatbarrier.CombatBarrierPlugin; import org.bukkit.*; import org.bukkit.block.BlockFace; import org.bukkit.entity.Player; import org.bukkit.scheduler.BukkitTask; import java.util.*; public class BarrierManager { private final CombatBarrierPlugin plugin; private BukkitTask updateTask; // Track which fake barrier blocks are shown to each player private final Map> playerBarrierBlocks = new HashMap<>(); // Direction offsets for detecting zone border private static final BlockFace[] HORIZONTAL_FACES = { BlockFace.NORTH, BlockFace.SOUTH, BlockFace.EAST, BlockFace.WEST, BlockFace.NORTH_EAST, BlockFace.NORTH_WEST, BlockFace.SOUTH_EAST, BlockFace.SOUTH_WEST }; public BarrierManager(CombatBarrierPlugin plugin) { this.plugin = plugin; } public void startTask() { int ticks = plugin.getConfig().getInt("barrier.update-ticks", 2); updateTask = plugin.getServer().getScheduler().runTaskTimer(plugin, this::updateAllBarriers, ticks, ticks); } public void stopTask() { if (updateTask != null) updateTask.cancel(); } public void reload() { stopTask(); removeAllBarriers(); startTask(); } /** * Main update loop — runs every N ticks for all online players */ private void updateAllBarriers() { for (Player player : Bukkit.getOnlinePlayers()) { if (plugin.getCombatManager().isInCombat(player)) { updateBarrierForPlayer(player); } else { // Player not in combat — remove their barriers if (playerBarrierBlocks.containsKey(player.getUniqueId())) { removeBarriersForPlayer(player); } } } } /** * Check the player's surroundings and show barrier blocks at the zone border */ private void updateBarrierForPlayer(Player player) { int thickness = plugin.getConfig().getInt("barrier.thickness", 2); int height = plugin.getConfig().getInt("barrier.height", 4); double detectionDist = plugin.getConfig().getDouble("barrier.detection-distance", 1.0); Location playerLoc = player.getLocation(); boolean playerInSafeZone = plugin.getZoneManager().isSafeZoneForPlayer(playerLoc, player); Set newBarrierLocations = new HashSet<>(); // Scan a small radius around the player for zone borders int scanRadius = (int) Math.ceil(detectionDist) + thickness + 2; for (int x = -scanRadius; x <= scanRadius; x++) { for (int z = -scanRadius; z <= scanRadius; z++) { Location checkLoc = playerLoc.clone().add(x, 0, z); boolean checkSafe = plugin.getZoneManager().isSafeZone(checkLoc); // If player is OUTSIDE safe zone and this block IS in safe zone // OR player is INSIDE safe zone and this block is OUTSIDE // → This is a border block → place barrier wall here if (checkSafe != playerInSafeZone) { double dist = Math.sqrt(x * x + z * z); if (dist <= detectionDist + thickness) { // Add vertical barrier column at this XZ for (int y = -1; y < height - 1; y++) { Location barrierLoc = checkLoc.clone(); barrierLoc.setY(Math.floor(playerLoc.getY()) + y); // Only show barriers where there's no solid block already if (barrierLoc.getBlock().getType() == Material.AIR || barrierLoc.getBlock().getType() == Material.CAVE_AIR) { newBarrierLocations.add(barrierLoc.toBlockLocation()); } } } } } } // Get previously shown barriers Set oldBarriers = playerBarrierBlocks.getOrDefault(player.getUniqueId(), new HashSet<>()); // Remove barriers no longer needed Set toRemove = new HashSet<>(oldBarriers); toRemove.removeAll(newBarrierLocations); for (Location loc : toRemove) { sendBlockChange(player, loc, loc.getBlock().getBlockData()); } // Add new barriers Set toAdd = new HashSet<>(newBarrierLocations); toAdd.removeAll(oldBarriers); for (Location loc : toAdd) { sendBlockChange(player, loc, Material.BARRIER.createBlockData()); if (plugin.getConfig().getBoolean("barrier.particles")) { spawnBarrierParticle(player, loc); } } // Update stored barriers if (newBarrierLocations.isEmpty()) { playerBarrierBlocks.remove(player.getUniqueId()); } else { playerBarrierBlocks.put(player.getUniqueId(), newBarrierLocations); } // Send message when player walks into the barrier if (!toAdd.isEmpty()) { int remaining = plugin.getCombatManager().getRemainingTime(player); String msg = plugin.getConfig().getString("messages.combat-barrier-hit", "&cYou cannot enter a safe zone while in combat! &7(&e%time%s remaining&7)"); msg = msg.replace("%time%", String.valueOf(remaining)); player.sendActionBar(net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer .legacyAmpersand().deserialize(msg)); if (plugin.getConfig().getBoolean("barrier.sound")) { try { Sound sound = Sound.valueOf(plugin.getConfig().getString("barrier.sound-type", "BLOCK_GLASS_BREAK")); player.playSound(player.getLocation(), sound, 0.6f, 1.2f); } catch (IllegalArgumentException ignored) {} } } } /** * Remove all fake barrier blocks shown to a specific player */ public void removeBarriersForPlayer(Player player) { Set barriers = playerBarrierBlocks.remove(player.getUniqueId()); if (barriers == null) return; for (Location loc : barriers) { sendBlockChange(player, loc, loc.getBlock().getBlockData()); } } /** * Remove all fake barrier blocks for all players (used on shutdown/reload) */ public void removeAllBarriers() { for (Player player : Bukkit.getOnlinePlayers()) { removeBarriersForPlayer(player); } playerBarrierBlocks.clear(); } private void sendBlockChange(Player player, Location loc, org.bukkit.block.data.BlockData data) { player.sendBlockChange(loc, data); } private void spawnBarrierParticle(Player player, Location loc) { // Spawn subtle red dust particles at the barrier edge (only visible to this player) Particle.DustOptions dustOptions = new Particle.DustOptions(Color.RED, 1.0f); player.spawnParticle(Particle.DUST, loc.clone().add(0.5, 0.5, 0.5), 3, 0.2, 0.2, 0.2, dustOptions); } }