Command Rework

[Manered]

final CommandNode gamemode = new CommandNode("gamemode")
    .aliases("gm")
    .permission("minecraft.command.gamemode")
    .require(CommandRequirements::requirePlayer)
    .subcommand(new CommandNode("creative")
        .aliases("c")
        .permission("minecraft.command.gamemode.creative")
        .executes(Player.class, (player, ctx) -> {
            player.setGameMode(GameMode.CREATIVE)
        })
    );

final CommandNode message = new CommandNode("whisper")
    .aliases("msg", "message", "tell")
    .permission("minecraft.command.whisper")
    .argument(CommandArguments.required(ArgumentTypes.PLAYER, "player"))
    .argument(CommandArguments.required(ArgumentTypes.TEXT, "message"))
    .executes((source, ctx) -> {
       final Player target = ctx.getArgument("player", ArgumentTypes.PLAYER.getType());
       final String message = ctx.getArgument("message", ArgumentTypes.TEXT.getType());
       // ...
    });

Uses Brigadier internally.

[Manered]

Requirements are going to be called filters.
An executor is a Consumer<CommandContext<S>>, the requirement/filter is a Predicate<CommandContext<? extends CommandContext>>, return true if you want to stop listing the command for the player.
For example:

node.filter(ctx.getSource() instanceof Player);
node.executes(Player.class, (final CommandContext<Player> ctx) -> {

});

[Manered]

An executor can also now be:

node.executes(Player.class, (final Player source, final CommandContext<Player> ctx) -> {

});

[Manered]

A new addition is going to be:
CommandArgument

• SingleCommandArgument
• JoinedCommandArgument

[Manered]

Almost done, need to finish argument types

[Manered]

A new addition is going to be: CommandArgument

• SingleCommandArgument
• JoinedCommandArgument

We will not have JoinedCommandArgument for now.

[Manered]

I will also need to add CommandRequirements