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https://github.com/BentoBoxWorld/BentoBox.git
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load chunks passively
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168de622ea
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333c9a8272
@ -18,39 +18,40 @@ import java.util.ArrayList;
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import java.util.Iterator;
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import java.util.List;
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import java.util.concurrent.CompletableFuture;
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import java.util.concurrent.atomic.AtomicBoolean;
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/**
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* A class that calculates finds a safe spot asynchronously and then teleports the player there.
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* @author tastybento
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*
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* @author tastybento
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*/
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public class SafeSpotTeleport {
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private static final int MAX_CHUNKS = 6;
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private static final long SPEED = 1;
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private static final int MAX_RADIUS = 50;
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private boolean notChecking;
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private BukkitTask task;
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// Parameters
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private final Entity entity;
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private final Location location;
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private boolean portal;
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private final int homeNumber;
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// Locations
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private Location bestSpot;
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private final BentoBox plugin;
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private List<Pair<Integer, Integer>> chunksToScan;
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private final Runnable runnable;
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private final Runnable failRunnable;
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private final CompletableFuture<Boolean> result;
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private final String homeName;
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private final int maxHeight;
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private final World world;
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private final AtomicBoolean checking = new AtomicBoolean();
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private BukkitTask task;
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private boolean portal;
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// Locations
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private Location bestSpot;
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private Iterator<Pair<Integer, Integer>> chunksToScanIterator;
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private int checkedChunks = 0;
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/**
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* Teleports and entity to a safe spot on island
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*
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* @param builder - safe spot teleport builder
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*/
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SafeSpotTeleport(Builder builder) {
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@ -63,9 +64,11 @@ public class SafeSpotTeleport {
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this.runnable = builder.getRunnable();
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this.failRunnable = builder.getFailRunnable();
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this.result = builder.getResult();
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this.maxHeight = location.getWorld().getMaxHeight() - 20;
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this.world = location.getWorld();
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assert world != null;
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this.maxHeight = world.getMaxHeight() - 20;
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// Try to go
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Util.getChunkAtAsync(location).thenRun(()-> tryToGo(builder.getFailureMessage()));
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Util.getChunkAtAsync(location).thenRun(() -> tryToGo(builder.getFailureMessage()));
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}
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private void tryToGo(String failureMessage) {
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@ -83,41 +86,42 @@ public class SafeSpotTeleport {
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}
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}
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// Get chunks to scan
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chunksToScan = getChunksToScan();
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// Start checking
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notChecking = true;
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chunksToScanIterator = getChunksToScan().iterator();
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// Start a recurring task until done or cancelled
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task = Bukkit.getScheduler().runTaskTimer(plugin, () -> gatherChunks(failureMessage), 0L, SPEED);
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}
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private void gatherChunks(String failureMessage) {
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if (!notChecking) {
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if (checking.get()) {
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return;
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}
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notChecking = false;
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List<ChunkSnapshot> chunkSnapshot = new ArrayList<>();
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Iterator<Pair<Integer, Integer>> it = chunksToScan.iterator();
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if (!it.hasNext()) {
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checking.set(true);
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if (checkedChunks > MAX_CHUNKS || !chunksToScanIterator.hasNext()) {
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// Nothing left
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tidyUp(entity, failureMessage);
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return;
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}
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// Add chunk snapshots to the list
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while (it.hasNext() && chunkSnapshot.size() < MAX_CHUNKS) {
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Pair<Integer, Integer> pair = it.next();
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if (location.getWorld() != null) {
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boolean isLoaded = location.getWorld().getChunkAt(pair.x, pair.z).isLoaded();
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chunkSnapshot.add(location.getWorld().getChunkAt(pair.x, pair.z).getChunkSnapshot());
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if (!isLoaded) {
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location.getWorld().getChunkAt(pair.x, pair.z).unload();
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// Get the chunk
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Pair<Integer, Integer> chunkPair = chunksToScanIterator.next();
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chunksToScanIterator.remove();
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checkedChunks++;
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if (checkedChunks >= MAX_CHUNKS) {
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checking.set(false);
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return;
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}
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// Get the chunk snapshot and scan it
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Util.getChunkAtAsync(world, chunkPair.x, chunkPair.z)
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.thenApply(Chunk::getChunkSnapshot)
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.whenCompleteAsync((snapshot, e) -> {
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if (snapshot != null && scanChunk(snapshot)) {
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task.cancel();
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} else {
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checking.set(false);
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}
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it.remove();
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}
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// Move to next step
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checkChunks(chunkSnapshot);
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});
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}
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private void tidyUp(Entity entity, String failureMessage) {
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@ -128,7 +132,7 @@ public class SafeSpotTeleport {
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if (portal && bestSpot != null) {
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// Portals found, teleport to the best spot we found
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teleportEntity(bestSpot);
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} else if (entity instanceof Player) {
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} else if (entity instanceof Player player) {
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// Return to main thread and teleport the player
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Bukkit.getScheduler().runTask(plugin, () -> {
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// Failed, no safe spot
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@ -137,15 +141,15 @@ public class SafeSpotTeleport {
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}
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if (!plugin.getIWM().inWorld(entity.getLocation())) {
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// Last resort
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((Player)entity).performCommand("spawn");
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player.performCommand("spawn");
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} else {
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// Create a spot for the player to be
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if (location.getWorld().getEnvironment().equals(Environment.NETHER)) {
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makeAndTelport(Material.NETHERRACK);
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} else if (location.getWorld().getEnvironment().equals(Environment.THE_END)) {
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makeAndTelport(Material.END_STONE);
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if (world.getEnvironment().equals(Environment.NETHER)) {
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makeAndTeleport(Material.NETHERRACK);
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} else if (world.getEnvironment().equals(Environment.THE_END)) {
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makeAndTeleport(Material.END_STONE);
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} else {
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makeAndTelport(Material.COBBLESTONE);
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makeAndTeleport(Material.COBBLESTONE);
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}
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}
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if (failRunnable != null) {
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@ -161,7 +165,7 @@ public class SafeSpotTeleport {
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}
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}
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private void makeAndTelport(Material m) {
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private void makeAndTeleport(Material m) {
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location.getBlock().getRelative(BlockFace.DOWN).setType(m, false);
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location.getBlock().setType(Material.AIR, false);
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location.getBlock().getRelative(BlockFace.UP).setType(Material.AIR, false);
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@ -174,20 +178,21 @@ public class SafeSpotTeleport {
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/**
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* Gets a set of chunk coords that will be scanned.
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*
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* @return - list of chunk coords to be scanned
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*/
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private List<Pair<Integer, Integer>> getChunksToScan() {
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List<Pair<Integer, Integer>> chunksToScan = new ArrayList<>();
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int maxRadius = plugin.getIslands().getIslandAt(location).map(Island::getProtectionRange).orElseGet(() -> plugin.getIWM().getIslandProtectionRange(location.getWorld()));
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int maxRadius = plugin.getIslands().getIslandAt(location).map(Island::getProtectionRange).orElseGet(() -> plugin.getIWM().getIslandProtectionRange(world));
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maxRadius = Math.min(MAX_RADIUS, maxRadius);
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int x = location.getBlockX();
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int z = location.getBlockZ();
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// Create ever increasing squares around the target location
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int radius = 0;
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do {
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for (int i = x - radius; i <= x + radius; i+=16) {
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for (int j = z - radius; j <= z + radius; j+=16) {
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addChunk(chunksToScan, new Pair<>(i,j), new Pair<>(i >> 4, j >> 4));
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for (int i = x - radius; i <= x + radius; i += 16) {
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for (int j = z - radius; j <= z + radius; j += 16) {
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addChunk(chunksToScan, new Pair<>(i, j), new Pair<>(i >> 4, j >> 4));
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}
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}
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radius++;
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@ -201,32 +206,13 @@ public class SafeSpotTeleport {
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}
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}
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/**
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* Loops through the chunks and if a safe spot is found, fires off the teleportation
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* @param chunkSnapshot - list of chunk snapshots to check
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*/
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private void checkChunks(final List<ChunkSnapshot> chunkSnapshot) {
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// Run async task to scan chunks
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Bukkit.getScheduler().runTaskAsynchronously(plugin, () -> {
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for (ChunkSnapshot chunk: chunkSnapshot) {
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if (scanChunk(chunk)) {
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task.cancel();
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return;
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}
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}
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// Nothing happened, change state
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notChecking = true;
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});
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}
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/**
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* @param chunk - chunk snapshot
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* @return true if a safe spot was found
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*/
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private boolean scanChunk(ChunkSnapshot chunk) {
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int startY = location.getBlockY();
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int minY = location.getWorld().getMinHeight();
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int minY = world.getMinHeight();
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int maxY = 60; // Just a dummy value
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// Check the safe spot at the current height
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@ -296,6 +282,7 @@ public class SafeSpotTeleport {
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/**
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* Returns true if the location is a safe one.
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*
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* @param chunk - chunk snapshot
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* @param x - x coordinate
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* @param y - y coordinate
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@ -303,7 +290,6 @@ public class SafeSpotTeleport {
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* @return true if this is a safe spot, false if this is a portal scan
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*/
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boolean checkBlock(ChunkSnapshot chunk, int x, int y, int z) {
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World world = location.getWorld();
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Material type = chunk.getBlockType(x, y, z);
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Material space1 = chunk.getBlockType(x, Math.min(y + 1, maxHeight), z);
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Material space2 = chunk.getBlockType(x, Math.min(y + 2, maxHeight), z);
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@ -333,6 +319,7 @@ public class SafeSpotTeleport {
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public static class Builder {
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private final BentoBox plugin;
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private final CompletableFuture<Boolean> result = new CompletableFuture<>();
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private Entity entity;
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private int homeNumber = 0;
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private String homeName = "";
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@ -341,7 +328,6 @@ public class SafeSpotTeleport {
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private Location location;
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private Runnable runnable;
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private Runnable failRunnable;
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private final CompletableFuture<Boolean> result = new CompletableFuture<>();
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public Builder(BentoBox plugin) {
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this.plugin = plugin;
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@ -349,6 +335,7 @@ public class SafeSpotTeleport {
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/**
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* Set who or what is going to teleport
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*
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* @param entity entity to teleport
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* @return Builder
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*/
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@ -359,6 +346,7 @@ public class SafeSpotTeleport {
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/**
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* Set the island to teleport to
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*
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* @param island island destination
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* @return Builder
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*/
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@ -369,6 +357,7 @@ public class SafeSpotTeleport {
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/**
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* Set the home number to this number
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*
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* @param homeNumber home number
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* @return Builder
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* @deprecated use {@link #homeName}
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@ -381,6 +370,7 @@ public class SafeSpotTeleport {
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/**
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* Set the home name
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*
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* @param homeName - home name
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* @return Builder
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* @since 1.16.0
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@ -392,6 +382,7 @@ public class SafeSpotTeleport {
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/**
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* This is a portal teleportation
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*
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* @return Builder
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*/
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public Builder portal() {
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@ -401,6 +392,7 @@ public class SafeSpotTeleport {
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/**
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* Set the failure message if this teleport cannot happen
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*
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* @param failureMessage failure message to report to user
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* @return Builder
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*/
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@ -411,6 +403,7 @@ public class SafeSpotTeleport {
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/**
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* Set the desired location
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*
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* @param location the location
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* @return Builder
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*/
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@ -421,6 +414,7 @@ public class SafeSpotTeleport {
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/**
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* Try to teleport the player
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*
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* @return CompletableFuture that will become true if successful and false if not
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* @since 1.14.0
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*/
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@ -432,6 +426,7 @@ public class SafeSpotTeleport {
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/**
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* Try to teleport the player
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*
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* @return SafeSpotTeleport
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*/
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@Nullable
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@ -447,6 +442,11 @@ public class SafeSpotTeleport {
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result.complete(null);
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return null;
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}
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if (location.getWorld() == null) {
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plugin.logError("Attempt to safe teleport to a null world!");
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result.complete(null);
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return null;
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}
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if (failureMessage.isEmpty() && entity instanceof Player) {
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failureMessage = "general.errors.no-safe-location-found";
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}
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@ -455,6 +455,7 @@ public class SafeSpotTeleport {
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/**
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* The task to run after the player is safely teleported.
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*
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* @param runnable - task
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* @return Builder
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* @since 1.13.0
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@ -466,14 +467,16 @@ public class SafeSpotTeleport {
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/**
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* The task to run if the player is not safely teleported
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*
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* @param runnable - task
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* @return Builder
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* @since 1.18.0
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*/
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public Builder ifFail(Runnable rannable) {
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public Builder ifFail(Runnable runnable) {
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this.failRunnable = runnable;
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return this;
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}
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/**
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* @return the plugin
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*/
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