Added /xp and /toggledownfall commands from vanilla

By: Nathan Adams <dinnerbone@dinnerbone.com>

paper-api/src/main/java/org/bukkit/command/SimpleCommandMap.java

@@ -40,6 +40,8 @@ public class SimpleCommandMap implements CommandMap {
         fallbackCommands.add(new KillCommand());
         fallbackCommands.add(new GameModeCommand());
         fallbackCommands.add(new HelpCommand());
+        fallbackCommands.add(new ExpCommand());
+        fallbackCommands.add(new ToggleDownfallCommand());
     }
 
     public SimpleCommandMap(final Server server) {

paper-api/src/main/java/org/bukkit/command/defaults/ExpCommand.java

@@ -0,0 +1,48 @@
+package org.bukkit.command.defaults;
+
+import org.bukkit.Bukkit;
+import org.bukkit.ChatColor;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+
+public class ExpCommand extends VanillaCommand {
+    public ExpCommand() {
+        super("xp");
+        this.description = "Gives the specified player a certain amount of experience";
+        this.usageMessage = "/xp <player> <amount>";
+        this.setPermission("bukkit.command.xp");
+    }
+
+    @Override
+    public boolean execute(CommandSender sender, String currentAlias, String[] args) {
+        if (!testPermission(sender)) return true;
+        if (args.length != 2) {
+            sender.sendMessage(ChatColor.RED + "Usage: " + usageMessage);
+            return false;
+        }
+
+        Player player = Bukkit.getPlayerExact(args[0]);
+
+        if (player != null) {
+            try {
+                int exp = Integer.parseInt(args[1]);
+
+                Command.broadcastCommandMessage(sender, "Giving " + exp + " exp to " +  player.getName());
+
+                player.giveExp(exp);
+            } catch (NumberFormatException ex) {
+                sender.sendMessage("Invalid exp count: " + args[1]);
+            }
+        } else {
+            sender.sendMessage("Can't find user " + args[0]);
+        }
+
+        return true;
+    }
+
+    @Override
+    public boolean matches(String input) {
+        return input.startsWith("xp ") || input.equalsIgnoreCase("xp");
+    }
+}

paper-api/src/main/java/org/bukkit/command/defaults/ToggleDownfallCommand.java

@@ -0,0 +1,47 @@
+package org.bukkit.command.defaults;
+
+import org.bukkit.Bukkit;
+import org.bukkit.ChatColor;
+import org.bukkit.World;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+
+public class ToggleDownfallCommand extends VanillaCommand {
+    public ToggleDownfallCommand() {
+        super("toggledownfall");
+        this.description = "Toggles rain on/off on a given world";
+        this.usageMessage = "/toggledownfall";
+        this.setPermission("bukkit.command.toggledownfall");
+    }
+
+    @Override
+    public boolean execute(CommandSender sender, String currentAlias, String[] args) {
+        if (!testPermission(sender)) return true;
+
+        World world = null;
+
+        if (args.length == 1) {
+            world = Bukkit.getWorld(args[0]);
+
+            if (world == null) {
+                sender.sendMessage(ChatColor.RED + "No world exists with the name '" + args[0] + "'");
+                return true;
+            }
+        } else if (sender instanceof Player) {
+            world = ((Player)sender).getWorld();
+        } else {
+            world = Bukkit.getWorlds().get(0);
+        }
+
+        Command.broadcastCommandMessage(sender, "Toggling downfall " + (world.hasStorm() ? "off" : "on") + " for world '" + world.getName() + "'");
+        world.setStorm(!world.hasStorm());
+
+        return true;
+    }
+
+    @Override
+    public boolean matches(String input) {
+        return input.startsWith("toggledownfall");
+    }
+}

paper-api/src/main/java/org/bukkit/util/permissions/CommandPermissions.java

@@ -104,6 +104,8 @@ public final class CommandPermissions {
         DefaultPermissions.registerPermission(PREFIX + "reload", "Allows the user to reload the server settings", PermissionDefault.OP, commands);
         DefaultPermissions.registerPermission(PREFIX + "version", "Allows the user to view the version of the server", PermissionDefault.TRUE, commands);
         DefaultPermissions.registerPermission(PREFIX + "gamemode", "Allows the user to change the gamemode of another player", PermissionDefault.OP, commands);
+        DefaultPermissions.registerPermission(PREFIX + "xp", "Allows the user to give themselves or others arbitrary values of experience", PermissionDefault.OP, commands);
+        DefaultPermissions.registerPermission(PREFIX + "toggledownfall", "Allows the user to toggle rain on/off for a given world", PermissionDefault.OP, commands);
 
         commands.recalculatePermissibles();