Update Hologram

build.gradle

@@ -6,7 +6,7 @@ plugins {
 }
 
 group = 'me.skymc'
-version = '5.17'
+version = '5.18'
 
 sourceCompatibility = 1.8
 targetCompatibility = 1.8
@@ -37,7 +37,6 @@ dependencies {
     shadow group: 'me.clip', name: 'placeholderapi', version: '2.10.4'
     shadow group: 'com.google.inject', name: 'guice', version: '4.2.2'
     shadow fileTree(dir: 'libs', includes: ['*.jar'])
-    compile "org.jetbrains.kotlin:kotlin-stdlib"
 }
 
 shadowJar {

src/main/scala/io/izzel/taboolib/TabooLibLoader.java

@@ -4,6 +4,8 @@ import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 import io.izzel.taboolib.client.TabooLibClient;
 import io.izzel.taboolib.client.TabooLibServer;
+import io.izzel.taboolib.metrics.BStats;
+import io.izzel.taboolib.metrics.CStats;
 import io.izzel.taboolib.module.dependency.TDependencyInjector;
 import io.izzel.taboolib.module.inject.TSchedule;
 import io.izzel.taboolib.util.Files;
@@ -33,8 +35,9 @@ public class TabooLibLoader {
         // 加载依赖
         TDependencyInjector.inject(TabooLib.getPlugin(), TabooLib.class);
         // 插件统计
-        Metrics metrics = new Metrics(TabooLib.getPlugin());
+        BStats bStats = new BStats(TabooLib.getPlugin());
-        metrics.addCustomChart(new Metrics.SingleLineChart("plugins_using_taboolib", () -> Math.toIntExact(Arrays.stream(Bukkit.getPluginManager().getPlugins()).filter(TabooLibAPI::isDependTabooLib).count())));
+        CStats cStats = new CStats(TabooLib.getPlugin());
+        bStats.addCustomChart(new BStats.SingleLineChart("plugins_using_taboolib", () -> Math.toIntExact(Arrays.stream(Bukkit.getPluginManager().getPlugins()).filter(TabooLibAPI::isDependTabooLib).count())));
         // 读取插件类
         setupClasses(TabooLib.getPlugin());
         // 读取加载器

src/main/scala/io/izzel/taboolib/cronus/bukkit/ItemStack.java

@@ -1,22 +1,25 @@
 package io.izzel.taboolib.cronus.bukkit;
 
+import com.google.common.collect.Lists;
 import io.izzel.taboolib.util.item.Items;
 import org.bukkit.entity.Player;
 
+import java.util.List;
+
 /**
  * @Author 坏黑
  * @Since 2019-05-23 22:45
  */
 public class ItemStack {
 
-    private String type;
+    private List<String> type;
     private String name;
     private String lore;
     private int damage;
     private int amount;
 
     public ItemStack(String type, String name, String lore, int damage, int amount) {
-        this.type = type;
+        this.type = type == null ? null : Lists.newArrayList(type.split("\\|"));
         this.name = name;
         this.lore = lore;
         this.damage = damage;
@@ -24,7 +27,7 @@ public class ItemStack {
     }
 
     public boolean isType(org.bukkit.inventory.ItemStack itemStack) {
-        return type == null || itemStack.getType().name().equalsIgnoreCase(type);
+        return type == null || type.stream().anyMatch(e -> e.equalsIgnoreCase(itemStack.getType().name()));
     }
 
     public boolean isName(org.bukkit.inventory.ItemStack itemStack) {
@@ -59,8 +62,8 @@ public class ItemStack {
         return Items.takeItem(player.getInventory(), this::isSimilar, amount);
     }
 
-    public String getType() {
+    public List<String> getType() {
-        return type;
+        return Lists.newArrayList(type);
     }
 
     public String getName() {

src/main/scala/io/izzel/taboolib/metrics/BStats.java

@@ -1,4 +1,4 @@
-package io.izzel.taboolib;
+package io.izzel.taboolib.metrics;
 
 import org.bukkit.Bukkit;
 import org.bukkit.configuration.file.YamlConfiguration;
@@ -29,7 +29,7 @@ import java.util.zip.GZIPOutputStream;
  *
  * @author Bastian
  */
-public class Metrics {
+public class BStats {
 
     // The version of this bStats class
     public static final int B_STATS_VERSION = 1;
@@ -48,7 +48,7 @@ public class Metrics {
                     new byte[] {'o', 'r', 'g', '.', 'b', 's', 't', 'a', 't', 's', '.', 'b', 'u', 'k', 'k', 'i', 't'});
             final String examplePackage = new String(new byte[] {'y', 'o', 'u', 'r', '.', 'p', 'a', 'c', 'k', 'a', 'g', 'e'});
             // We want to make sure nobody just copy & pastes the example and use the wrong package names
-            if (Metrics.class.getPackage().getName().equals(defaultPackage) || Metrics.class.getPackage().getName().equals(examplePackage)) {
+            if (BStats.class.getPackage().getName().equals(defaultPackage) || BStats.class.getPackage().getName().equals(examplePackage)) {
                 throw new IllegalStateException("bStats Metrics class has not been relocated correctly!");
             }
         }
@@ -65,7 +65,7 @@ public class Metrics {
      *
      * @param plugin The plugin which stats should be submitted.
      */
-    public Metrics(Plugin plugin) {
+    public BStats(Plugin plugin) {
         if (plugin == null) {
             throw new IllegalArgumentException("Plugin cannot be null!");
         }
@@ -104,7 +104,7 @@ public class Metrics {
                 }
             }
             // Register our service
-            Bukkit.getServicesManager().register(Metrics.class, this, plugin, ServicePriority.Normal);
+            Bukkit.getServicesManager().register(BStats.class, this, plugin, ServicePriority.Normal);
             if (!found) {
                 // We are the first!
                 startSubmitting();

src/main/scala/io/izzel/taboolib/metrics/CStats.java

@@ -0,0 +1,713 @@
+package io.izzel.taboolib.metrics;
+
+import com.google.gson.JsonArray;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
+import com.google.gson.JsonPrimitive;
+import org.bukkit.Bukkit;
+import org.bukkit.configuration.file.YamlConfiguration;
+import org.bukkit.entity.Player;
+import org.bukkit.plugin.Plugin;
+import org.bukkit.plugin.RegisteredServiceProvider;
+import org.bukkit.plugin.ServicePriority;
+
+import javax.net.ssl.HttpsURLConnection;
+import java.io.*;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.net.URL;
+import java.nio.charset.StandardCharsets;
+import java.util.*;
+import java.util.concurrent.Callable;
+import java.util.logging.Level;
+import java.util.zip.GZIPOutputStream;
+
+/**
+ * cStats collects some data for plugin authors.
+ * <p>
+ * Check out https://cstats.iroselle.com/ to learn more about cStats!
+ */
+@SuppressWarnings({"WeakerAccess", "unused"})
+public class CStats {
+
+    static {
+        // You can use the property to disable the check in your test environment
+        if (System.getProperty("cStats.relocatecheck") == null || !System.getProperty("cStats.relocatecheck").equals("false")) {
+            // Maven's Relocate is clever and changes strings, too. So we have to use this little "trick" ... :D
+            final String defaultPackage = new String(
+                    new byte[]{'c','o','m','.','i','r','o','s','e','l','l','e','.','c','s','t','a','t','s','.','b','u','k','k','i','t'});
+            final String examplePackage = new String(new byte[]{'y', 'o', 'u', 'r', '.', 'p', 'a', 'c', 'k', 'a', 'g', 'e'});
+            // We want to make sure nobody just copy & pastes the example and use the wrong package names
+            if (CStats.class.getPackage().getName().equals(defaultPackage) || CStats.class.getPackage().getName().equals(examplePackage)) {
+                throw new IllegalStateException("cStats cStats class has not been relocated correctly!");
+            }
+        }
+    }
+
+    // The version of this cStats class
+    public static final int C_STATS_VERSION = 1;
+
+    // The url to which the data is sent
+    private static final String URL = "https://cstats.iroselle.com/submitData/bukkit";
+
+    // Is cStats enabled on this server?
+    private boolean enabled;
+
+    // Should failed requests be logged?
+    private static boolean logFailedRequests;
+
+    // Should the sent data be logged?
+    private static boolean logSentData;
+
+    // Should the response text be logged?
+    private static boolean logResponseStatusText;
+
+    // The uuid of the server
+    private static String serverUUID;
+
+    // The plugin
+    private final Plugin plugin;
+
+    // A list with all custom charts
+    private final List<CustomChart> charts = new ArrayList<>();
+
+    /**
+     * Class constructor.
+     *
+     * @param plugin The plugin which stats should be submitted.
+     */
+    public CStats(Plugin plugin) {
+        if (plugin == null) {
+            throw new IllegalArgumentException("Plugin cannot be null!");
+        }
+        this.plugin = plugin;
+
+        // Get the config file
+        File cStatsFolder = new File(plugin.getDataFolder().getParentFile(), "cStats");
+        File configFile = new File(cStatsFolder, "config.yml");
+        YamlConfiguration config = YamlConfiguration.loadConfiguration(configFile);
+
+        // Check if the config file exists
+        if (!config.isSet("serverUuid")) {
+
+            // Add default values
+            config.addDefault("enabled", true);
+            // Every server gets it's unique random id.
+            config.addDefault("serverUuid", UUID.randomUUID().toString());
+            // Should failed request be logged?
+            config.addDefault("logFailedRequests", false);
+            // Should the sent data be logged?
+            config.addDefault("logSentData", false);
+            // Should the response text be logged?
+            config.addDefault("logResponseStatusText", false);
+
+            // Inform the server owners about cStats
+            config.options().header(
+                    "cStats collects some data for plugin authors like how many servers are using their plugins.\n" +
+                            "To honor their work, you should not disable it.\n" +
+                            "This has nearly no effect on the server performance!\n" +
+                            "Check out https://cstats.iroselle.com/ to learn more :)"
+            ).copyDefaults(true);
+            try {
+                config.save(configFile);
+            } catch (IOException ignored) { }
+        }
+
+        // Load the data
+        enabled = config.getBoolean("enabled", true);
+        serverUUID = config.getString("serverUuid");
+        logFailedRequests = config.getBoolean("logFailedRequests", false);
+        logSentData = config.getBoolean("logSentData", false);
+        logResponseStatusText = config.getBoolean("logResponseStatusText", false);
+
+        if (enabled) {
+            boolean found = false;
+            // Search for all other cStats cStats classes to see if we are the first one
+            for (Class<?> service : Bukkit.getServicesManager().getKnownServices()) {
+                try {
+                    service.getField("C_STATS_VERSION"); // Our identifier :)
+                    found = true; // We aren't the first
+                    break;
+                } catch (NoSuchFieldException ignored) { }
+            }
+            // Register our service
+            Bukkit.getServicesManager().register(CStats.class, this, plugin, ServicePriority.Normal);
+            if (!found) {
+                // We are the first!
+                startSubmitting();
+            }
+        }
+    }
+
+    /**
+     * Checks if cStats is enabled.
+     *
+     * @return Whether cStats is enabled or not.
+     */
+    public boolean isEnabled() {
+        return enabled;
+    }
+
+    /**
+     * Adds a custom chart.
+     *
+     * @param chart The chart to add.
+     */
+    public void addCustomChart(CustomChart chart) {
+        if (chart == null) {
+            throw new IllegalArgumentException("Chart cannot be null!");
+        }
+        charts.add(chart);
+    }
+
+    /**
+     * Starts the Scheduler which submits our data every 30 minutes.
+     */
+    private void startSubmitting() {
+        final Timer timer = new Timer(true); // We use a timer cause the Bukkit scheduler is affected by server lags
+        timer.scheduleAtFixedRate(new TimerTask() {
+            @Override
+            public void run() {
+                if (!plugin.isEnabled()) { // Plugin was disabled
+                    timer.cancel();
+                    return;
+                }
+                // Nevertheless we want our code to run in the Bukkit main thread, so we have to use the Bukkit scheduler
+                // Don't be afraid! The connection to the cStats server is still async, only the stats collection is sync ;)
+                Bukkit.getScheduler().runTask(plugin, () -> submitData());
+            }
+        }, 1000 * 60 * 5, 1000 * 60 * 30);
+        // Submit the data every 30 minutes, first time after 5 minutes to give other plugins enough time to start
+        // WARNING: Changing the frequency has no effect but your plugin WILL be blocked/deleted!
+        // WARNING: Just don't do it!
+    }
+
+    /**
+     * Gets the plugin specific data.
+     * This method is called using Reflection.
+     *
+     * @return The plugin specific data.
+     */
+    public JsonObject getPluginData() {
+        JsonObject data = new JsonObject();
+
+        String pluginName = plugin.getDescription().getName();
+        String pluginVersion = plugin.getDescription().getVersion();
+
+        data.addProperty("pluginName", pluginName); // Append the name of the plugin
+        data.addProperty("pluginVersion", pluginVersion); // Append the version of the plugin
+        JsonArray customCharts = new JsonArray();
+        for (CustomChart customChart : charts) {
+            // Add the data of the custom charts
+            JsonObject chart = customChart.getRequestJsonObject();
+            if (chart == null) { // If the chart is null, we skip it
+                continue;
+            }
+            customCharts.add(chart);
+        }
+        data.add("customCharts", customCharts);
+
+        return data;
+    }
+
+    /**
+     * Gets the server specific data.
+     *
+     * @return The server specific data.
+     */
+    private JsonObject getServerData() {
+        // Minecraft specific data
+        int playerAmount;
+        try {
+            // Around MC 1.8 the return type was changed to a collection from an array,
+            // This fixes java.lang.NoSuchMethodError: org.bukkit.Bukkit.getOnlinePlayers()Ljava/util/Collection;
+            Method onlinePlayersMethod = Class.forName("org.bukkit.Server").getMethod("getOnlinePlayers");
+            playerAmount = onlinePlayersMethod.getReturnType().equals(Collection.class)
+                    ? ((Collection<?>) onlinePlayersMethod.invoke(Bukkit.getServer())).size()
+                    : ((Player[]) onlinePlayersMethod.invoke(Bukkit.getServer())).length;
+        } catch (Exception e) {
+            playerAmount = Bukkit.getOnlinePlayers().size(); // Just use the new method if the Reflection failed
+        }
+        int onlineMode = Bukkit.getOnlineMode() ? 1 : 0;
+        String bukkitVersion = Bukkit.getVersion();
+        String bukkitName = Bukkit.getName();
+
+        // OS/Java specific data
+        String javaVersion = System.getProperty("java.version");
+        String osName = System.getProperty("os.name");
+        String osArch = System.getProperty("os.arch");
+        String osVersion = System.getProperty("os.version");
+        int coreCount = Runtime.getRuntime().availableProcessors();
+
+        JsonObject data = new JsonObject();
+
+        data.addProperty("serverUUID", serverUUID);
+
+        data.addProperty("playerAmount", playerAmount);
+        data.addProperty("onlineMode", onlineMode);
+        data.addProperty("bukkitVersion", bukkitVersion);
+        data.addProperty("bukkitName", bukkitName);
+
+        data.addProperty("javaVersion", javaVersion);
+        data.addProperty("osName", osName);
+        data.addProperty("osArch", osArch);
+        data.addProperty("osVersion", osVersion);
+        data.addProperty("coreCount", coreCount);
+
+        return data;
+    }
+
+    /**
+     * Collects the data and sends it afterwards.
+     */
+    private void submitData() {
+        final JsonObject data = getServerData();
+
+        JsonArray pluginData = new JsonArray();
+        // Search for all other cStats cStats classes to get their plugin data
+        for (Class<?> service : Bukkit.getServicesManager().getKnownServices()) {
+            try {
+                service.getField("C_STATS_VERSION"); // Our identifier :)
+
+                for (RegisteredServiceProvider<?> provider : Bukkit.getServicesManager().getRegistrations(service)) {
+                    try {
+                        Object plugin = provider.getService().getMethod("getPluginData").invoke(provider.getProvider());
+                        if (plugin instanceof JsonObject) {
+                            pluginData.add((JsonObject) plugin);
+                        } else { // old cStats version compatibility
+                            try {
+                                Class<?> jsonObjectJsonSimple = Class.forName("org.json.simple.JSONObject");
+                                if (plugin.getClass().isAssignableFrom(jsonObjectJsonSimple)) {
+                                    Method jsonStringGetter = jsonObjectJsonSimple.getDeclaredMethod("toJSONString");
+                                    jsonStringGetter.setAccessible(true);
+                                    String jsonString = (String) jsonStringGetter.invoke(plugin);
+                                    JsonObject object = new JsonParser().parse(jsonString).getAsJsonObject();
+                                    pluginData.add(object);
+                                }
+                            } catch (ClassNotFoundException e) {
+                                // minecraft version 1.14+
+                                if (logFailedRequests) {
+                                    this.plugin.getLogger().log(Level.SEVERE, "Encountered unexpected exception", e);
+                                }
+                            }
+                        }
+                    } catch (NullPointerException | NoSuchMethodException | IllegalAccessException | InvocationTargetException ignored) { }
+                }
+            } catch (NoSuchFieldException ignored) { }
+        }
+
+        data.add("plugins", pluginData);
+
+        // Create a new thread for the connection to the cStats server
+        new Thread(() -> {
+            try {
+                // Send the data
+                sendData(plugin, data);
+            } catch (Exception e) {
+                // Something went wrong! :(
+                if (logFailedRequests) {
+                    plugin.getLogger().log(Level.WARNING, "Could not submit plugin stats of " + plugin.getName(), e);
+                }
+            }
+        }).start();
+    }
+
+    /**
+     * Sends the data to the cStats server.
+     *
+     * @param plugin Any plugin. It's just used to get a logger instance.
+     * @param data The data to send.
+     * @throws Exception If the request failed.
+     */
+    private static void sendData(Plugin plugin, JsonObject data) throws Exception {
+        if (data == null) {
+            throw new IllegalArgumentException("Data cannot be null!");
+        }
+        if (Bukkit.isPrimaryThread()) {
+            throw new IllegalAccessException("This method must not be called from the main thread!");
+        }
+        if (logSentData) {
+            plugin.getLogger().info("Sending data to cStats: " + data);
+        }
+        HttpsURLConnection connection = (HttpsURLConnection) new URL(URL).openConnection();
+
+        // Compress the data to save bandwidth
+        byte[] compressedData = compress(data.toString());
+
+        // Add headers
+        connection.setRequestMethod("POST");
+        connection.addRequestProperty("Accept", "application/json");
+        connection.addRequestProperty("Connection", "close");
+        connection.addRequestProperty("Content-Encoding", "gzip"); // We gzip our request
+        connection.addRequestProperty("Content-Length", String.valueOf(compressedData.length));
+        connection.setRequestProperty("Content-Type", "application/json"); // We send our data in JSON format
+        connection.setRequestProperty("User-Agent", "MC-Server/" + C_STATS_VERSION);
+
+        // Send data
+        connection.setDoOutput(true);
+        try (DataOutputStream outputStream = new DataOutputStream(connection.getOutputStream())) {
+            outputStream.write(compressedData);
+        }
+
+        StringBuilder builder = new StringBuilder();
+        try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(connection.getInputStream()))) {
+            String line;
+            while ((line = bufferedReader.readLine()) != null) {
+                builder.append(line);
+            }
+        }
+
+        if (logResponseStatusText) {
+            plugin.getLogger().info("Sent data to cStats and received response: " + builder);
+        }
+    }
+
+    /**
+     * Gzips the given String.
+     *
+     * @param str The string to gzip.
+     * @return The gzipped String.
+     * @throws IOException If the compression failed.
+     */
+    private static byte[] compress(final String str) throws IOException {
+        if (str == null) {
+            return null;
+        }
+        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
+        try (GZIPOutputStream gzip = new GZIPOutputStream(outputStream)) {
+            gzip.write(str.getBytes(StandardCharsets.UTF_8));
+        }
+        return outputStream.toByteArray();
+    }
+
+    /**
+     * Represents a custom chart.
+     */
+    public static abstract class CustomChart {
+
+        // The id of the chart
+        final String chartId;
+
+        /**
+         * Class constructor.
+         *
+         * @param chartId The id of the chart.
+         */
+        CustomChart(String chartId) {
+            if (chartId == null || chartId.isEmpty()) {
+                throw new IllegalArgumentException("ChartId cannot be null or empty!");
+            }
+            this.chartId = chartId;
+        }
+
+        private JsonObject getRequestJsonObject() {
+            JsonObject chart = new JsonObject();
+            chart.addProperty("chartId", chartId);
+            try {
+                JsonObject data = getChartData();
+                if (data == null) {
+                    // If the data is null we don't send the chart.
+                    return null;
+                }
+                chart.add("data", data);
+            } catch (Throwable t) {
+                if (logFailedRequests) {
+                    Bukkit.getLogger().log(Level.WARNING, "Failed to get data for custom chart with id " + chartId, t);
+                }
+                return null;
+            }
+            return chart;
+        }
+
+        protected abstract JsonObject getChartData() throws Exception;
+
+    }
+
+    /**
+     * Represents a custom simple pie.
+     */
+    public static class SimplePie extends CustomChart {
+
+        private final Callable<String> callable;
+
+        /**
+         * Class constructor.
+         *
+         * @param chartId The id of the chart.
+         * @param callable The callable which is used to request the chart data.
+         */
+        public SimplePie(String chartId, Callable<String> callable) {
+            super(chartId);
+            this.callable = callable;
+        }
+
+        @Override
+        protected JsonObject getChartData() throws Exception {
+            JsonObject data = new JsonObject();
+            String value = callable.call();
+            if (value == null || value.isEmpty()) {
+                // Null = skip the chart
+                return null;
+            }
+            data.addProperty("value", value);
+            return data;
+        }
+    }
+
+    /**
+     * Represents a custom advanced pie.
+     */
+    public static class AdvancedPie extends CustomChart {
+
+        private final Callable<Map<String, Integer>> callable;
+
+        /**
+         * Class constructor.
+         *
+         * @param chartId The id of the chart.
+         * @param callable The callable which is used to request the chart data.
+         */
+        public AdvancedPie(String chartId, Callable<Map<String, Integer>> callable) {
+            super(chartId);
+            this.callable = callable;
+        }
+
+        @Override
+        protected JsonObject getChartData() throws Exception {
+            JsonObject data = new JsonObject();
+            JsonObject values = new JsonObject();
+            Map<String, Integer> map = callable.call();
+            if (map == null || map.isEmpty()) {
+                // Null = skip the chart
+                return null;
+            }
+            boolean allSkipped = true;
+            for (Map.Entry<String, Integer> entry : map.entrySet()) {
+                if (entry.getValue() == 0) {
+                    continue; // Skip this invalid
+                }
+                allSkipped = false;
+                values.addProperty(entry.getKey(), entry.getValue());
+            }
+            if (allSkipped) {
+                // Null = skip the chart
+                return null;
+            }
+            data.add("values", values);
+            return data;
+        }
+    }
+
+    /**
+     * Represents a custom drilldown pie.
+     */
+    public static class DrilldownPie extends CustomChart {
+
+        private final Callable<Map<String, Map<String, Integer>>> callable;
+
+        /**
+         * Class constructor.
+         *
+         * @param chartId The id of the chart.
+         * @param callable The callable which is used to request the chart data.
+         */
+        public DrilldownPie(String chartId, Callable<Map<String, Map<String, Integer>>> callable) {
+            super(chartId);
+            this.callable = callable;
+        }
+
+        @Override
+        public JsonObject getChartData() throws Exception {
+            JsonObject data = new JsonObject();
+            JsonObject values = new JsonObject();
+            Map<String, Map<String, Integer>> map = callable.call();
+            if (map == null || map.isEmpty()) {
+                // Null = skip the chart
+                return null;
+            }
+            boolean reallyAllSkipped = true;
+            for (Map.Entry<String, Map<String, Integer>> entryValues : map.entrySet()) {
+                JsonObject value = new JsonObject();
+                boolean allSkipped = true;
+                for (Map.Entry<String, Integer> valueEntry : map.get(entryValues.getKey()).entrySet()) {
+                    value.addProperty(valueEntry.getKey(), valueEntry.getValue());
+                    allSkipped = false;
+                }
+                if (!allSkipped) {
+                    reallyAllSkipped = false;
+                    values.add(entryValues.getKey(), value);
+                }
+            }
+            if (reallyAllSkipped) {
+                // Null = skip the chart
+                return null;
+            }
+            data.add("values", values);
+            return data;
+        }
+    }
+
+    /**
+     * Represents a custom single line chart.
+     */
+    public static class SingleLineChart extends CustomChart {
+
+        private final Callable<Integer> callable;
+
+        /**
+         * Class constructor.
+         *
+         * @param chartId The id of the chart.
+         * @param callable The callable which is used to request the chart data.
+         */
+        public SingleLineChart(String chartId, Callable<Integer> callable) {
+            super(chartId);
+            this.callable = callable;
+        }
+
+        @Override
+        protected JsonObject getChartData() throws Exception {
+            JsonObject data = new JsonObject();
+            int value = callable.call();
+            if (value == 0) {
+                // Null = skip the chart
+                return null;
+            }
+            data.addProperty("value", value);
+            return data;
+        }
+
+    }
+
+    /**
+     * Represents a custom multi line chart.
+     */
+    public static class MultiLineChart extends CustomChart {
+
+        private final Callable<Map<String, Integer>> callable;
+
+        /**
+         * Class constructor.
+         *
+         * @param chartId The id of the chart.
+         * @param callable The callable which is used to request the chart data.
+         */
+        public MultiLineChart(String chartId, Callable<Map<String, Integer>> callable) {
+            super(chartId);
+            this.callable = callable;
+        }
+
+        @Override
+        protected JsonObject getChartData() throws Exception {
+            JsonObject data = new JsonObject();
+            JsonObject values = new JsonObject();
+            Map<String, Integer> map = callable.call();
+            if (map == null || map.isEmpty()) {
+                // Null = skip the chart
+                return null;
+            }
+            boolean allSkipped = true;
+            for (Map.Entry<String, Integer> entry : map.entrySet()) {
+                if (entry.getValue() == 0) {
+                    continue; // Skip this invalid
+                }
+                allSkipped = false;
+                values.addProperty(entry.getKey(), entry.getValue());
+            }
+            if (allSkipped) {
+                // Null = skip the chart
+                return null;
+            }
+            data.add("values", values);
+            return data;
+        }
+
+    }
+
+    /**
+     * Represents a custom simple bar chart.
+     */
+    public static class SimpleBarChart extends CustomChart {
+
+        private final Callable<Map<String, Integer>> callable;
+
+        /**
+         * Class constructor.
+         *
+         * @param chartId The id of the chart.
+         * @param callable The callable which is used to request the chart data.
+         */
+        public SimpleBarChart(String chartId, Callable<Map<String, Integer>> callable) {
+            super(chartId);
+            this.callable = callable;
+        }
+
+        @Override
+        protected JsonObject getChartData() throws Exception {
+            JsonObject data = new JsonObject();
+            JsonObject values = new JsonObject();
+            Map<String, Integer> map = callable.call();
+            if (map == null || map.isEmpty()) {
+                // Null = skip the chart
+                return null;
+            }
+            for (Map.Entry<String, Integer> entry : map.entrySet()) {
+                JsonArray categoryValues = new JsonArray();
+                categoryValues.add(new JsonPrimitive(entry.getValue()));
+                values.add(entry.getKey(), categoryValues);
+            }
+            data.add("values", values);
+            return data;
+        }
+
+    }
+
+    /**
+     * Represents a custom advanced bar chart.
+     */
+    public static class AdvancedBarChart extends CustomChart {
+
+        private final Callable<Map<String, int[]>> callable;
+
+        /**
+         * Class constructor.
+         *
+         * @param chartId The id of the chart.
+         * @param callable The callable which is used to request the chart data.
+         */
+        public AdvancedBarChart(String chartId, Callable<Map<String, int[]>> callable) {
+            super(chartId);
+            this.callable = callable;
+        }
+
+        @Override
+        protected JsonObject getChartData() throws Exception {
+            JsonObject data = new JsonObject();
+            JsonObject values = new JsonObject();
+            Map<String, int[]> map = callable.call();
+            if (map == null || map.isEmpty()) {
+                // Null = skip the chart
+                return null;
+            }
+            boolean allSkipped = true;
+            for (Map.Entry<String, int[]> entry : map.entrySet()) {
+                if (entry.getValue().length == 0) {
+                    continue; // Skip this invalid
+                }
+                allSkipped = false;
+                JsonArray categoryValues = new JsonArray();
+                for (int categoryValue : entry.getValue()) {
+                    categoryValues.add(new JsonPrimitive(categoryValue));
+                }
+                values.add(entry.getKey(), categoryValues);
+            }
+            if (allSkipped) {
+                // Null = skip the chart
+                return null;
+            }
+            data.add("values", values);
+            return data;
+        }
+    }
+
+}

src/main/scala/io/izzel/taboolib/module/config/TConfigWatcher.java

@@ -46,7 +46,11 @@ public class TConfigWatcher {
     }
 
     public void addSimpleListener(File file, Runnable runnable) {
-        addListener(file, null, obj -> runnable.run());
+        try {
+            addListener(file, null, obj -> runnable.run());
+        } catch (Throwable t) {
+            t.printStackTrace();
+        }
     }
 
     public void addOnListen(File file, Object obj, Consumer<Object> consumer) {

src/main/scala/io/izzel/taboolib/module/hologram/Hologram.java

@@ -0,0 +1,195 @@
+package io.izzel.taboolib.module.hologram;
+
+import com.google.common.collect.Sets;
+import io.izzel.taboolib.module.nms.NMS;
+import io.izzel.taboolib.module.packet.TPacketHandler;
+import org.bukkit.Bukkit;
+import org.bukkit.Location;
+import org.bukkit.entity.Player;
+
+import java.util.Set;
+
+/**
+ * @Author sky
+ * @Since 2020-03-07 16:28
+ */
+public class Hologram {
+
+    private Set<HologramViewer> viewers = Sets.newConcurrentHashSet();
+    private String text;
+    private Location location;
+    private boolean viewAll = false;
+    private boolean deleted = false;
+    private boolean autoDelete = false;
+    private int viewDistance = 50;
+
+    Hologram(Location location, String text, Player... viewers) {
+        THologram.getHolograms().add(this);
+        this.text = text;
+        this.location = location.clone();
+        for (Player viewer : viewers) {
+            addViewer(viewer);
+        }
+    }
+
+    public Hologram toAll() {
+        this.viewAll = true;
+        return this;
+    }
+
+    public Hologram autoDelete() {
+        this.autoDelete = true;
+        return this;
+    }
+
+    public Hologram refresh() {
+        if (deleted) {
+            return this;
+        }
+        if (viewAll) {
+            Bukkit.getOnlinePlayers().forEach(this::addViewer);
+        }
+        viewers.forEach(this::refresh);
+        return this;
+    }
+
+    public Hologram refresh(HologramViewer viewer) {
+        if (deleted) {
+            return this;
+        }
+        viewer.setVisible(location.getWorld().equals(viewer.getPlayer().getWorld()) && location.distance(viewer.getPlayer().getLocation()) < viewDistance);
+        if (viewer.isVisible()) {
+            THologram.submit(() -> {
+                if (viewer.isSpawned()) {
+                    NMS.handle().sendPacketEntityTeleport(viewer.getPlayer(), viewer.getId(), location);
+                } else {
+                    viewer.setSpawned(true);
+                    TPacketHandler.sendPacket(viewer.getPlayer(), THologramHandler.copy(viewer.getId(), location).get());
+                    TPacketHandler.sendPacket(viewer.getPlayer(), THologramHandler.copy(viewer.getId()).get());
+                }
+                TPacketHandler.sendPacket(viewer.getPlayer(), THologramHandler.copy(viewer.getId(), text).get());
+            });
+        } else {
+            destroy(viewer);
+        }
+        return this;
+    }
+
+    public Hologram flash(String text) {
+        if (deleted) {
+            return this;
+        }
+        this.text = text;
+        THologram.submit(() -> viewers.forEach(v -> TPacketHandler.sendPacket(v.getPlayer(), THologramHandler.copy(v.getId(), text).get())));
+        return this;
+    }
+
+    public Hologram flash(Location location) {
+        if (deleted) {
+            return this;
+        }
+        this.location = location.clone();
+        THologram.submit(() -> viewers.forEach(v -> NMS.handle().sendPacketEntityTeleport(v.getPlayer(), v.getId(), location)));
+        return this;
+    }
+
+    public Hologram delete() {
+        destroy();
+        deleted = true;
+        return this;
+    }
+
+    public Hologram destroy() {
+        if (deleted) {
+            return this;
+        }
+        viewers.forEach(this::destroy);
+        return this;
+    }
+
+    public Hologram destroy(HologramViewer viewer) {
+        if (deleted) {
+            return this;
+        }
+        viewer.setSpawned(false);
+        THologram.submit(() -> NMS.handle().sendPacketEntityDestroy(viewer.getPlayer(), viewer.getId()));
+        return this;
+    }
+
+    public void addViewer(Player player) {
+        if (deleted) {
+            return;
+        }
+        if (!isViewer(player)) {
+            HologramViewer viewer = new HologramViewer(player);
+            viewers.add(viewer);
+            refresh(viewer);
+        }
+    }
+
+    public void removeViewer(Player player) {
+        if (deleted) {
+            return;
+        }
+        HologramViewer viewer = getViewer(player);
+        viewers.remove(viewer);
+        destroy(viewer);
+        if (viewers.isEmpty() && autoDelete) {
+            deleted = true;
+        }
+    }
+
+    public boolean isViewer(Player player) {
+        return viewers.stream().anyMatch(i -> i.getPlayer().getName().equals(player.getName()));
+    }
+
+    public HologramViewer getViewer(Player player) {
+        return viewers.stream().filter(i -> i.getPlayer().getName().equals(player.getName())).findFirst().orElse(null);
+    }
+
+    // *********************************
+    //
+    //        Getter and Setter
+    //
+    // *********************************
+
+    public Set<HologramViewer> getViewers() {
+        return viewers;
+    }
+
+    public String getText() {
+        return text;
+    }
+
+    public Location getLocation() {
+        return location.clone();
+    }
+
+    public boolean isViewAll() {
+        return viewAll;
+    }
+
+    public boolean isDeleted() {
+        return deleted;
+    }
+
+    public boolean isAutoDelete() {
+        return autoDelete;
+    }
+
+    public int getViewDistance() {
+        return viewDistance;
+    }
+
+    public void setText(String text) {
+        this.text = text;
+    }
+
+    public void setLocation(Location location) {
+        this.location = location;
+    }
+
+    public void setViewDistance(int viewDistance) {
+        this.viewDistance = viewDistance;
+    }
+}

src/main/scala/io/izzel/taboolib/module/hologram/HologramViewer.java

@@ -0,0 +1,80 @@
+package io.izzel.taboolib.module.hologram;
+
+import org.bukkit.entity.Player;
+
+import java.util.Objects;
+
+/**
+ * @Author sky
+ * @Since 2020-03-07 16:56
+ */
+public class HologramViewer {
+
+    private int id;
+    private Player player;
+    private boolean spawned;
+    private boolean visible;
+
+    HologramViewer(Player player) {
+        this.id = THologram.nextIndex(player);
+        this.player = player;
+    }
+
+    public void setVisible(boolean visible) {
+        this.spawned = false;
+        this.visible = visible;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (!(o instanceof HologramViewer)) {
+            return false;
+        }
+        HologramViewer that = (HologramViewer) o;
+        return player.getName().equals(that.getPlayer().getName());
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(player.getName());
+    }
+
+    @Override
+    public String toString() {
+        return "HologramViewer{" +
+                "id=" + id +
+                ", player=" + player +
+                ", spawned=" + spawned +
+                ", visible=" + visible +
+                '}';
+    }
+
+    // *********************************
+    //
+    //        Getter and Setter
+    //
+    // *********************************
+
+    public int getId() {
+        return id;
+    }
+
+    public Player getPlayer() {
+        return player;
+    }
+
+    public boolean isSpawned() {
+        return spawned;
+    }
+
+    public boolean isVisible() {
+        return visible;
+    }
+
+    public void setSpawned(boolean spawned) {
+        this.spawned = spawned;
+    }
+}

src/main/scala/io/izzel/taboolib/module/hologram/THologram.java

@@ -0,0 +1,74 @@
+package io.izzel.taboolib.module.hologram;
+
+import com.google.common.collect.Lists;
+import com.google.common.collect.Maps;
+import io.izzel.taboolib.module.inject.PlayerContainer;
+import io.izzel.taboolib.module.inject.TSchedule;
+import org.bukkit.Location;
+import org.bukkit.entity.Player;
+
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+/**
+ * @Author sky
+ * @Since 2020-03-07 14:24
+ */
+public class THologram {
+
+    private static ExecutorService executorService = Executors.newSingleThreadExecutor();
+
+    @PlayerContainer
+    private static Map<String, Integer> index = Maps.newConcurrentMap();
+    private static List<Hologram> holograms = Lists.newCopyOnWriteArrayList();
+
+    public static List<Hologram> getHolograms() {
+        return holograms;
+    }
+
+    public static int nextIndex(Player player) {
+        return index.put(player.getName(), index.computeIfAbsent(player.getName(), e -> 449599702) + 1);
+    }
+
+    public static Hologram create(Location location, String text) {
+        return new Hologram(location, text);
+    }
+
+    public static Hologram create(Location location, String text, Player... viewers) {
+        return new Hologram(location, text, viewers);
+    }
+
+    @TSchedule(period = 100, async = true)
+    public static void release() {
+        holograms.removeIf(Hologram::isDeleted);
+    }
+
+    public static void remove(Player player) {
+        holograms.forEach(hologram -> hologram.removeViewer(player));
+    }
+
+    public static void refresh(Player player) {
+        for (Hologram hologram : holograms) {
+            HologramViewer viewer = hologram.getViewer(player);
+            if (viewer != null) {
+                hologram.refresh(viewer);
+            }
+        }
+    }
+
+    public static void submit(Runnable runnable) {
+        executorService.submit(() -> {
+            if (THologramHandler.isLearned()) {
+                runnable.run();
+            } else {
+                try {
+                    Thread.sleep(100L);
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                }
+            }
+        });
+    }
+}

src/main/scala/io/izzel/taboolib/module/hologram/THologramHandler.java

@@ -0,0 +1,208 @@
+package io.izzel.taboolib.module.hologram;
+
+import com.google.common.collect.Lists;
+import com.google.common.collect.Queues;
+import io.izzel.taboolib.TabooLib;
+import io.izzel.taboolib.Version;
+import io.izzel.taboolib.module.inject.TListener;
+import io.izzel.taboolib.module.lite.SimpleReflection;
+import io.izzel.taboolib.module.packet.Packet;
+import io.izzel.taboolib.module.packet.TPacket;
+import io.izzel.taboolib.util.Ref;
+import org.bukkit.Bukkit;
+import org.bukkit.Location;
+import org.bukkit.entity.ArmorStand;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.*;
+import org.bukkit.scheduler.BukkitRunnable;
+
+import java.util.List;
+import java.util.Queue;
+import java.util.UUID;
+
+/**
+ * @Author sky
+ * @Since 2020-03-07 14:23
+ */
+@TListener
+class THologramHandler implements Listener {
+
+    private static ArmorStand learnTarget = null;
+    private static Packet packetInit = null;
+    private static Packet packetSpawn = null;
+    private static Packet packetName = null;
+    private static THologramSchedule currentSchedule = null;
+    private static Queue<THologramSchedule> queueSchedule = Queues.newArrayDeque();
+
+    private static boolean learned = false;
+
+    @TPacket(type = TPacket.Type.RECEIVE)
+    static boolean d(Player player, Packet packet) {
+        if (packet.is("PacketPlayInPosition") && !learned) {
+            learned = true;
+            Bukkit.getScheduler().runTask(TabooLib.getPlugin(), () -> learn(player));
+        }
+        return true;
+    }
+
+    @TPacket(type = TPacket.Type.SEND)
+    static boolean e(Player player, Packet packet) {
+        if (learnTarget == null) {
+            return true;
+        }
+        if (packet.is("PacketPlayOutSpawnEntity") && packet.read("a", Integer.TYPE) == learnTarget.getEntityId()) {
+            packetSpawn = packet;
+            return false;
+        }
+        if (packet.is("PacketPlayOutEntityMetadata") && packet.read("a", Integer.TYPE) == learnTarget.getEntityId()) {
+            if (currentSchedule != null) {
+                currentSchedule.after(packet);
+            } else {
+                packetInit = packet;
+            }
+            return false;
+        }
+        return true;
+    }
+
+    public static boolean isLearned() {
+        return packetInit != null && packetSpawn != null && packetName != null;
+    }
+
+    public static Packet copy(int id, Location location) {
+        Packet packet = THologramHandler.getPacketSpawn().copy("e", "f", "j", "h", "i", "j", "k", "l");
+        packet.write("a", id);
+        if (Version.isAfter(Version.v1_9)) {
+            packet.write("b", UUID.randomUUID());
+            packet.write("c", location.getX());
+            packet.write("d", location.getY());
+            packet.write("e", location.getZ());
+        } else {
+            packet.write("b", location.getX());
+            packet.write("c", location.getY());
+            packet.write("d", location.getZ());
+        }
+        return packet;
+    }
+
+    public static Packet copy(int id) {
+        Packet packet = THologramHandler.getPacketInit().copy("b");
+        packet.write("a", id);
+        return packet;
+    }
+
+    public static Packet copy(int id, String name) {
+        Packet packet = THologramHandler.getPacketName().copy();
+        packet.write("a", id);
+        List copy = Lists.newArrayList();
+        List item = THologramHandler.getPacketName().read("b", List.class);
+        for (Object element : item) {
+            SimpleReflection.checkAndSave(element.getClass());
+            Object a = SimpleReflection.getFieldValue(element.getClass(), element, "a");
+            Object c = SimpleReflection.getFieldValue(element.getClass(), element, "c");
+            try {
+                Object i = Ref.getUnsafe().allocateInstance(element.getClass());
+                SimpleReflection.setFieldValue(element.getClass(), i, "a", a);
+                SimpleReflection.setFieldValue(element.getClass(), i, "b", name);
+                SimpleReflection.setFieldValue(element.getClass(), i, "c", c);
+                copy.add(i);
+            } catch (InstantiationException e) {
+                e.printStackTrace();
+            }
+        }
+        packet.write("b", copy);
+        return packet;
+    }
+
+    public static void reset() {
+        queueSchedule.clear();
+        queueSchedule.offer(new THologramSchedule(() -> packetInit != null) {
+            @Override
+            public void before() {
+                learnTarget.setCustomName("  ");
+            }
+
+            @Override
+            public void after(Packet packet) {
+                packetName = packet;
+            }
+        });
+    }
+
+    public static void learn(Player player) {
+        player.getWorld().spawn(player.getLocation(), ArmorStand.class, c -> {
+            learnTarget = c;
+            learnTarget.setSmall(true);
+            learnTarget.setMarker(true);
+            learnTarget.setVisible(false);
+            learnTarget.setCustomName(" ");
+            learnTarget.setCustomNameVisible(true);
+            learnTarget.setBasePlate(false);
+        });
+        reset();
+        new BukkitRunnable() {
+            @Override
+            public void run() {
+                THologramSchedule schedule = queueSchedule.peek();
+                if (schedule == null) {
+                    cancel();
+                    learnTarget.remove();
+                } else if (schedule.check()) {
+                    currentSchedule = queueSchedule.poll();
+                    currentSchedule.before();
+                }
+            }
+        }.runTaskTimer(TabooLib.getPlugin(), 1, 1);
+    }
+
+    @EventHandler
+    public void e(PlayerJoinEvent e) {
+        THologram.refresh(e.getPlayer());
+    }
+
+    @EventHandler
+    public void e(PlayerQuitEvent e) {
+        THologram.remove(e.getPlayer());
+    }
+
+    @EventHandler
+    public void e(PlayerTeleportEvent e) {
+        THologram.refresh(e.getPlayer());
+    }
+
+    @EventHandler
+    public void e(PlayerChangedWorldEvent e) {
+        THologram.refresh(e.getPlayer());
+    }
+
+    @EventHandler
+    public void e(PlayerMoveEvent e) {
+        if (!e.getFrom().getBlock().equals(e.getTo().getBlock())) {
+            Bukkit.getScheduler().runTaskAsynchronously(TabooLib.getPlugin(), () -> THologram.refresh(e.getPlayer()));
+        }
+    }
+
+    // *********************************
+    //
+    //        Getter and Setter
+    //
+    // *********************************
+
+    public static ArmorStand getLearnTarget() {
+        return learnTarget;
+    }
+
+    public static Packet getPacketSpawn() {
+        return packetSpawn;
+    }
+
+    public static Packet getPacketInit() {
+        return packetInit;
+    }
+
+    public static Packet getPacketName() {
+        return packetName;
+    }
+}

src/main/scala/io/izzel/taboolib/module/hologram/THologramSchedule.java

@@ -0,0 +1,31 @@
+package io.izzel.taboolib.module.hologram;
+
+import io.izzel.taboolib.module.packet.Packet;
+
+import java.util.concurrent.Callable;
+
+/**
+ * @Author sky
+ * @Since 2020-03-07 14:28
+ */
+abstract class THologramSchedule {
+
+    private Callable condition;
+
+    public THologramSchedule(Callable<Boolean> condition) {
+        this.condition = condition;
+    }
+
+    public boolean check() {
+        try {
+            return (Boolean) condition.call();
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return false;
+    }
+
+    abstract public void before();
+
+    abstract public void after(Packet packet);
+}

src/main/scala/io/izzel/taboolib/module/nms/NMS.java

@@ -85,4 +85,9 @@ public abstract class NMS {
     abstract public boolean inBoundingBox(Entity entity, Vector vector);
 
     abstract public Location getLastLocation(ProjectileHitEvent event);
+
+    abstract public void sendPacketEntityDestroy(Player player, int entity);
+
+    abstract public void sendPacketEntityTeleport(Player player, int entity, Location location);
+
 }

src/main/scala/io/izzel/taboolib/module/nms/NMSImpl.java

@@ -446,4 +446,20 @@ public class NMSImpl extends NMS {
         }
         return null;
     }
+
+    @Override
+    public void sendPacketEntityDestroy(Player player, int entity) {
+        ((CraftPlayer) player).getHandle().playerConnection.sendPacket(new net.minecraft.server.v1_13_R2.PacketPlayOutEntityDestroy(entity));
+    }
+
+    @Override
+    public void sendPacketEntityTeleport(Player player, int entity, Location location) {
+        Object teleport = new net.minecraft.server.v1_13_R2.PacketPlayOutEntityTeleport();
+        SimpleReflection.checkAndSave(net.minecraft.server.v1_13_R2.PacketPlayOutEntityTeleport.class);
+        SimpleReflection.setFieldValue(net.minecraft.server.v1_13_R2.PacketPlayOutEntityTeleport.class, teleport, "a", entity);
+        SimpleReflection.setFieldValue(net.minecraft.server.v1_13_R2.PacketPlayOutEntityTeleport.class, teleport, "b", location.getX());
+        SimpleReflection.setFieldValue(net.minecraft.server.v1_13_R2.PacketPlayOutEntityTeleport.class, teleport, "c", location.getY());
+        SimpleReflection.setFieldValue(net.minecraft.server.v1_13_R2.PacketPlayOutEntityTeleport.class, teleport, "d", location.getZ());
+        ((CraftPlayer) player).getHandle().playerConnection.sendPacket((net.minecraft.server.v1_13_R2.PacketPlayOutEntityTeleport) teleport);
+    }
 }

src/main/scala/io/izzel/taboolib/module/packet/Packet.java

@@ -52,6 +52,20 @@ public class Packet {
         SimpleReflection.setFieldValue(this.packetClass, origin, key, value);
     }
 
+    public Packet copy(String... copyField) {
+        Object packet;
+        try {
+            packet = packetClass.newInstance();
+        } catch (Throwable t) {
+            t.printStackTrace();
+            return null;
+        }
+        for (String field : copyField) {
+            SimpleReflection.setFieldValue(this.packetClass, packet, field, SimpleReflection.getFieldValue(this.packetClass, origin, field));
+        }
+        return new Packet(packet);
+    }
+
     public Object get() {
         return origin;
     }