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    }