Die Inhaltsangabe kann sich auf eine andere Ausgabe dieses Titels beziehen.
Introduction,
What Are Command Blocks,
The Basics,
The Interface,
Command Blocks and Redstone,
Learning Basic Commands,
Minecraft Command Compendium,
Welcome to the Gallery!,
Redstone Items,
Your First 5 Redstone Builds,
What Are Command Blocks
The command block, like its name suggests, is a block in Minecraft all about commands. Each command you give to a command block is, in a sense, giving a command to the server, telling it to do something.
The only difference here being that the thing executing the command is the block, and it can continue to execute any command long after the server admin or creative player that spawned it is gone. Not long ago there was only one type of command block in the game but with the advent of the 1.9 update, there are now 3 types of command blocks at your disposal to conquer your Minecraft experience like never before.
These new types of command blocks aren't exactly extra items added in the game, but instead what they've done is add extra functionality to the original command block.
Now via interaction with the new improved interface of the classic (or Impulse) command block, you can change it into one of two new types, the Chain command block and the Repeating command block, each with their own functionality separate from that of the original.
While a classic command block will activate its command with a Redstone signal, with the chain variation (the green one), it is possible to place multiple command blocks down in a line (much like placing down lines of Redstone) and have them react in order, one after the other.
The repeating command block (purple) was created to automatically activate itself over and over instead of having to use Redstone to achieve the same effect. Don't panic though, Redstone will still be a big part of working with command blocks regardless of these innovations.
As you might guess, because of the variety of different ways to set up a Redstone system, you could still have a command block continuously executing a command automatically by using Redstone.
So if you want a command block to summon a cow every few minutes, you can do it. If you wanted a block of diamond to suddenly appear out of nowhere at the push of a button, that's possible too. If you wanted to design a bridge to cross a ravine that disappears periodically these command blocks are your tool to use.
But wait, there's more!
Not only can command blocks work for making physical changes to your Minecraft world and summoning blocks, items, or mobs, but they can also function as "brains" or "radars." What this means is that as well as summoning all those things, they can also "detect" anything you tell them to, and if you so choose, react to anything that it detects via a Redstone signal.
Basically if you place down a command block and tell it to look out for say, a creeper, you can have the block act as a guard for whatever you're building. If the creeper gets too close, it'll emit a Redstone signal. When that happens you can have that Redstone signal lead off to a trap of your own design, eliminating the problem while you're off doing your own thing, completely at ease knowing the command block is doing its job. It's not just enemy mobs like creepers, zombies, skeletons and Endermen either — it can detect other players, friendly mobs and even blocks. Based on the various things it can detect, you can have it react however you want. Even to the point where it can influence another command block to perform additional commands and achieve multiple effects.
The sky's pretty much the limit with command blocks.
HOT TIP:
When you have a long and complicated command typed out in a command block and want to take the block with you somewhere else, command and all, hold the control key while you middle click (scroll wheel) your mouse while looking at it and it will pick it up with your command still inside!
CHAPTER 2The Basics
In a normal server, summoned items and changes are brought about by inputting basic commands in the little black chat bar that pops up when you hit the "t" key on your keyboard. Alternatively you can use the forward slash "/" on your keyboard to the same effect but this adds in a forward slash "/" automatically, to start off any command you might be about to use.
The way to tell a server you're giving it a command is to start your line of text with a "/" or forward slash. This is true ONLY for typing commands intochat, but not for when you are imputing commands into command blocks.
The sole purpose of a command block is to execute a command, therefore, the "/" key isn't needed to tell the block that is what you are doing. There's nothing else you can be doing with it, so unlike typing commands into the chat bar, the commands for command blocks don't need the forward slash in front of them.
Before we get any further though there are a couple things to keep in mind. It's worth noting that a command block is only accessible through creative mode or being spawned in by the server — there's no crafting recipe here. Command blocks can only be summoned by someone playing in creative mode with the command:
/give [player] command_block
For chain commands blocks it would be:
/give [player] chain_command_block
And lastly for repeating command blocks the command would be:
/give [player] repeating_command_block
Alternatively, if on a multiplayer server, the same command can be used by any server admin to acquire one.
For those of you playing in creative mode, a neat trick to keep in mind is using the middle click mouse button while looking at a command block or any other block. By using middle click (or pushing in on your scroll wheel) whatever it is you are looking at will duplicate and appear in an empty space in your inventory.
So rather than having to type out "/give [player] command_block" every time you need another one, you can just middle mouse click on any existing command block and another will appear right in your hot-bar if you've got the space.
Added onto this feature is the "shift middle click" function. This works like the middle click function with the exception that you're holding shift when you click it. What this does is it scans whatever commands and settings that have been input into the command block you've clicked, and copies them out exactly into the one that appears in your inventory. So if you wanted to have two command blocks with the same command doing the same thing and you didn't want to write out the same command twice, you would use this function and you wouldn't have to.
Once a command block is summoned and placed in the world it can only be interacted with by creative mode players, server admins, or "Opped" players with a permission level of at least 2.
Though after a command has been set to a command block, any means of Redstone device can be connected to it and used by any player to activate it.
Once you get a command block, it's going to work just like a furnace or a crafting table. What this means is that anywhere in the world you want to place it you can, and once that's done you can just right click and open up the interface to start giving it commands.
FUN...
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