    001    package net.minecraft.command;
    002
    003    import java.util.List;
    004    import net.minecraft.server.MinecraftServer;
    005    import net.minecraft.util.StatCollector;
    006
    007    public class CommandDifficulty extends CommandBase
    008    {
    009        private static final String[] difficulties = new String[] {"options.difficulty.peaceful", "options.difficulty.easy", "options.difficulty.normal", "options.difficulty.hard"};
    010
    011        public String getCommandName()
    012        {
    013            return "difficulty";
    014        }
    015
    016        /**
    017         * Return the required permission level for this command.
    018         */
    019        public int getRequiredPermissionLevel()
    020        {
    021            return 2;
    022        }
    023
    024        public String getCommandUsage(ICommandSender par1ICommandSender)
    025        {
    026            return par1ICommandSender.translateString("commands.difficulty.usage", new Object[0]);
    027        }
    028
    029        public void processCommand(ICommandSender par1ICommandSender, String[] par2ArrayOfStr)
    030        {
    031            if (par2ArrayOfStr.length > 0)
    032            {
    033                int var3 = this.getDifficultyForName(par1ICommandSender, par2ArrayOfStr[0]);
    034                MinecraftServer.getServer().setDifficultyForAllWorlds(var3);
    035                String var4 = StatCollector.translateToLocal(difficulties[var3]);
    036                notifyAdmins(par1ICommandSender, 1, "commands.difficulty.success", new Object[] {var4});
    037            }
    038            else
    039            {
    040                throw new WrongUsageException("commands.difficulty.usage", new Object[0]);
    041            }
    042        }
    043
    044        /**
    045         * Return the difficulty value for the specified string.
    046         */
    047        protected int getDifficultyForName(ICommandSender par1ICommandSender, String par2Str)
    048        {
    049            return !par2Str.equalsIgnoreCase("peaceful") && !par2Str.equalsIgnoreCase("p") ? (!par2Str.equalsIgnoreCase("easy") && !par2Str.equalsIgnoreCase("e") ? (!par2Str.equalsIgnoreCase("normal") && !par2Str.equalsIgnoreCase("n") ? (!par2Str.equalsIgnoreCase("hard") && !par2Str.equalsIgnoreCase("h") ? parseIntBounded(par1ICommandSender, par2Str, 0, 3) : 3) : 2) : 1) : 0;
    050        }
    051
    052        /**
    053         * Adds the strings available in this command to the given list of tab completion options.
    054         */
    055        public List addTabCompletionOptions(ICommandSender par1ICommandSender, String[] par2ArrayOfStr)
    056        {
    057            return par2ArrayOfStr.length == 1 ? getListOfStringsMatchingLastWord(par2ArrayOfStr, new String[] {"peaceful", "easy", "normal", "hard"}): null;
    058        }
    059    }