Fabric Modding Tutorial - Minecraft 1.20: Advanced Item | #6
Summary
TLDRThis Minecraft modding tutorial introduces how to create a custom advanced item, specifically a metal detector. The item is coded with its own class, allowing unique functionalities such as checking for valuable blocks below the clicked block and notifying the player with coordinates. The tutorial covers item class creation, method overriding, and integrating the item into the game, including durability and damage handling. The metal detector item showcases the potential of modding to enhance gameplay with interactive, functional items.
Takeaways
- 🛠️ The tutorial focuses on adding a custom advanced item to Minecraft, specifically a 'metal detector' item that can detect valuable blocks like iron or diamond ore.
- 📦 The item is created within its own package for organizational purposes, following the convention of naming custom items with 'item' at the end.
- 🔧 The 'metal detector' item extends the base item class from the Minecraft modding API, allowing for the addition of custom functionality.
- 📝 The 'useOnBlock' method is overridden to implement the item's special behavior, which involves checking for valuable blocks below the clicked position.
- 🗄️ The script checks if the server is running the code (not the client) using 'context.getWorld().isClient' with a negation to ensure server-side execution.
- 🔍 A for loop is utilized to iterate through blocks below the clicked position, checking each block's state to determine if it's a valuable block.
- 💎 The 'isValuableBlock' method is a custom method that determines whether a block is considered valuable, such as iron or diamond ore.
- 📢 When a valuable block is found, the item outputs the block's coordinates to the player, and the item is damaged to simulate use.
- 🔨 The item has a durability limit set through 'fabric item settings', which determines how many times it can be used before breaking.
- 📝 The tutorial concludes with the item being registered within the mod and tested in-game, demonstrating its functionality and durability.
Q & A
What is the main focus of the tutorial described in the transcript?
-The main focus of the tutorial is to add a custom advanced item, specifically a metal detector, to Minecraft using modding.
What does the term 'advanced item' refer to in the context of Minecraft modding?
-In the context of Minecraft modding, an 'advanced item' refers to an item that has its own item class, allowing for the implementation of custom functionality beyond the standard capabilities of basic items.
Why is it recommended to end the name of custom items with 'Item' in Minecraft modding?
-It is recommended to end the name of custom items with 'Item' to clearly indicate that the class is an item class, which helps with organization and understanding within the codebase.
What method is used to define the behavior when the custom item is used on a block?
-The 'useOnBlock' method is used to define the behavior when the custom item is used on a block in Minecraft modding.
How does the metal detector item determine if a block is valuable?
-The metal detector item determines if a block is valuable by checking if the block state is of iron ore or diamond ore using a custom method called 'isValuableBlock'.
What is the purpose of the 'foundBlock' variable in the metal detector item's functionality?
-The 'foundBlock' variable is used to track whether a valuable block has been found during the search process. It is set to true when a valuable block is detected.
Why is it important to check if the code is running on the server and not the client in the metal detector item's functionality?
-It is important to check if the code is running on the server and not the client to ensure that the block checking and item damaging logic only occurs on the server, preventing potential client-side exploits or inconsistencies.
How does the tutorial handle the durability of the metal detector item in Minecraft?
-The tutorial handles the durability of the metal detector item by damaging it by one each time it is used to find a valuable block, with a maximum durability set to 64, after which the item will break.
What is the role of the 'use' method in the context of the custom metal detector item?
-The 'use' method in the context of the custom metal detector item is called when the player uses the item without targeting a block, but in this tutorial, the focus is on the 'useOnBlock' method for the item's functionality.
How is the metal detector item registered within the modding framework as described in the transcript?
-The metal detector item is registered within the modding framework by creating a new instance of the item class in the 'ModItems' class and setting its properties, such as max damage, and then adding it to the item group.
Outlines
🛠️ Crafting a Custom Advanced Item in Minecraft
The script begins with an introduction to adding a custom advanced item to Minecraft, specifically a 'metal detector' item. The tutorial covers the process of creating a new item class within the Minecraft modding framework. The item class is named 'metalDetectorItem' and extends the base item class from the Minecraft codebase. The script emphasizes the importance of overriding methods such as 'useOnBlock' to add functionality, allowing the item to interact with the game world. The 'useOnBlock' method is particularly highlighted, where the item checks for valuable blocks below the clicked block and outputs their coordinates if found. The script also touches on the necessity of server-side execution, using '!context.getWorld().isClient' to ensure actions are performed on the server. The process of creating helper methods like 'isValuableBlock' and 'outputValuableCoordinates' is outlined, along with the item's durability and damage mechanics.
🔍 Implementing and Testing the Metal Detector in Minecraft
The second paragraph delves into the implementation and testing of the custom 'metalDetectorItem' within the Minecraft game. It describes the process of registering the item within the mod's item group and setting its properties, such as maximum durability. The tutorial demonstrates how to add the item to the game's item group and configure its settings, including the texture and model. The script includes a practical demonstration within the game, where the metal detector is used to find valuable ores like iron and diamond. The item's functionality is showcased as it outputs the coordinates of found ores to the player's chat. The tutorial concludes with the item's durability decreasing with each use, eventually breaking after a set number of uses, showcasing the item's lifecycle within the game.
Mindmap
Keywords
💡Minecraft modding
💡Custom Advanced Item
💡Item Class
💡Use on Block Method
💡ActionResult.Success
💡Server-Side Code
💡For Loop
💡Is Valuable Block Method
💡Output Valuable Coordinates
💡Durability
💡Mod Items Class
Highlights
Introduction to adding a custom advanced item to Minecraft modding.
Explanation of what constitutes an advanced item in Minecraft modding.
Creating a new Java class for the custom item named 'metal detector item'.
The importance of naming conventions for custom item classes.
Extending the item class from net.minecraft.item.
Adding custom functionality to the item class through methods like 'useOnBlock'.
Overriding the 'useOnBlock' method to implement custom behavior.
Using 'ActionResult' to handle the item's interaction with blocks.
Checking server-side execution with 'context.getWorld().isClient'.
Iterating through blocks to find valuable ones using a for loop.
Creating a custom method 'isValuableBlock' to determine valuable blocks.
Outputting the coordinates of valuable blocks to the player.
Damaging the item after each use to simulate durability.
Registering the custom item in the 'ModItems' class.
Setting the maximum durability of the metal detector item.
Adding the custom item to the item group for in-game access.
Translation and item model JSON file setup for the custom item.
In-game demonstration of the metal detector item's functionality.
Conclusion and预告 of the next tutorial focusing on advanced blocks.
Transcripts
let's get to the cool stuff and add a
custom Advanced item to Minecraft
Minecraft modding courses with close to
100 topics ranging from Custom tools and
armor to custom block entities all the
way to custom mobs Linked In the
description below oh right we finished
that back and tell her once more in this
tutorial we're going to be adding a
custom Advanced item to our mod right
here and what I mean by an advanced item
that is an item that has its own item
class allowing us to do oh all sorts of
crazy things let me tell you and for
this in the item package we're going to
right click new a package and we'll call
this the custom this is done for
organizational purposes only so you
don't necessarily have to do this inside
of this though we'll make a new Java
class I'm going to call this the metal
detector item now this convention to end
the name of custom items with item over
here highly recommended to always do
this so you know that this is an item
class and this will extend the item
class right here from net micro item
we'll hover over this and create
Constructor matching super and with this
a because some item class is born
however it has literally zero custom
functionality and that's what we're here
for to take a look at what kind of
functionality you can add to this you
get middle Mouse button click on the
item class and you can take a look at
all of the crazy methods that are
available here and there are a lot of
things as you can clearly see now for us
what's interesting here is going to be
the use on block method right here this
one port when an item is used on a block
something else that might be interesting
is the use method as you can see this
one is basically called when the player
uses the item so that just means that
you're not looking at a block and you're
just right clicking this item and the
way to use them is to go into your
custom item class and to override those
methods so for example the use on block
method here is another example they use
on entity method which of course
logically would be called when you right
click with this particular item on an
entity and see in this case it refers to
any type of mobile basically but in our
case we want to use the use on block
method and we want to return the
actionresult.success over here so we
also get this like this swinging
animation when we actually right click
on the Block and what is our metal
detector item going to do well what
we're going to do is when you right
click a block it's going to double check
all of the blocks that are below that
block and as soon as it finds a valuable
block whatever whatever we're defining
it to be so for example an iron ore
block or a diamond ore block then it's
going to Output that we found that block
with the particular coordinates to start
we want to first of all say if
context.getworld.is client and then
there we go making a new statement and
now here very important we want to add
an exclamation mark here at the front
meaning that we're now on the server and
not the client this exclamation mark
does a lot of heavy lifting because it
negates the is client over here
basically making it so that we're only
inside of this if statement if we're on
the server and then we want to get some
variables so the first one is the blog
post that's just going to be the
position clicked over here and that's
going to equal to
context.getblog pass
we then want to say player entity
and that's going to be the player
getting this from context.getplayer
we also want a Boolean variable that's
going to be called the found block
that's going to be equal to false here
in this case and then we wanted to go
through a for Loop now this for Loop
looks like this basically we're going to
start with zero we're going to start at
the position that we've just clicked
we're going to go through all the way
until zero basically so we're sort of
subtracting from the Y level that we
have until we reach 0 and then we're
going to continue for 64 more blocks
because of course we now have the lowest
y level is now minus 64. then we're
going to get a block state that is the
block state that we're well basically
sort of currently evaluating that is
going to be done with being with doing
context dot get World dot get Block
State and then passing in the position
clicked dot down going down by I
basically as we're going through this
for Loop right I is going to increase so
we're going to go down one block at a
time and then evaluating that how are we
evaluating that we're going to say if is
valuable block and I'm passing in the
state right here then we want to do
something
now the first thing is wait it's
valuable Brock doesn't even exist
exactly that is a custom method that we
have to create ourselves so we're going
to hover over this and create that
method inside of our item class and we
want to return something and that is a
Boolean so let's just say we want to
check that the state is of
I want to say this is of the iron
underscore or or we can also say this is
status is of blocks dot diamond ore
there you go so if we right click on a
block and any block below that is an
iron ore block or a diamond ore block
then the is valuable block method is
true therefore we will now be inside of
this if statement and we can then output
valuable coordinates and what we need
for this well we need the coordinates to
Output so that would be position clicked
dot down and then passing in the I here
in the down we want to Output this for
the player so we should pass in the
player and we also want to pass in the
state but you know what we can actually
do the get Block over here because we
want to basically also say hey this is
the block that was basically found in
this position we will also do found
block is equal to true and then we will
also break out of the for Loop because
once we found one valuable I actually
want to be done with this there we go
and we can now create the output
valuable coordinates method as well
we're just going to change the name of
this to block pause that's a little bit
nicer and I'm going to copy over the
contents of this but they are pretty
straightforward you can see we're just
sending a message to the player that
just means that we're outputting
something into the chat basically and
we're going to do this as a literal text
over here we're just going to say found
and then this is going to well I'll show
you the name of the block that we found
at the position XYZ just written nicely
and then the overlay false just means
that it's not shown sort of in the
middle but it actually as a normal chat
message and then the question is well if
we are done over here with the for Loop
and we have not found a block where we
of course also want to do something and
we want to output something else and
that is going to be player.send message
and what we can do is we can just say
text Dot literal and we're just going to
say no valuables found awesome and the
last thing we want to do is we also want
to hurt this particular item so that
basically means that we're going to
damage this it's going to have a
durability of I mean whatever we choose
and it's going to take away one of those
durabilities when we right click so
we're going to say context dot get stack
dot damage we're going to damage it by
the amount of one we're going to say
context.getplayer and then we start
typing in player and you can see it's it
suggests us the consumer of player
entity we just hit tab to autocomplete
and we say player entity that send tool
break status and then passing in
playerentity dot get active hat and then
we'll make sure that the item inside of
our hand is also damaged and will break
accordingly once the max damage amount
is basically reached however right now
this particular metal detector class is
not used and you can see this because
this is gray and this is gray so the
name of the classes Ray as well as the
Constructor so let's go into the mod
items class and let's actually register
this so first I will just duplicate the
raw Ruby over here and I'm going to make
a metal underscore detector and of
course not forgetting to change the name
metal detector and you might be like oh
then we're already through but no wait a
second look at this again this is not
being used because what we need to do in
the mod items class this is extremely
important under the new item we now want
to create a new metal detector item
right here and you can confirm that
you've used this when the class name
trims right and the Constructor name
turns yellow you can also middle Mouse
button click on the Constructor and it
should take you to the mod items class
again absolutely spectacular I'm just
going to make another brake line over
here that it's a little bit easier to
read and then under the fabric item
settings we're also going to add the max
damage right here and that's going to be
let's say something like 64. so with
this metal detector item we can click 64
times and then it's going to be
destroyed as every right click we're
going to damage it by one now as for all
of the other items of course we still
need to add it to the item group that is
going to be very straightforward just
duplicating the entries that add over
here and then making this the metal
detector similarly adding the
translation should at this point be no
issue at all anymore same with the item
model Json file and let's copy over the
texture over here as well this is of
course going to be available to you for
download but those are all the steps
that we need for the custom Advanced
item here the metal detector so let's
jump into the game and see working all
right furnace is back in Minecraft and
let's just try and find some valuables
so you can see we find oh there we go I
actually already found some iron ore
over here here there we go that is at
minus 128 33 and minus 13 I mean of
course continue to well basically try to
find something diamond ore might be a
little bit harder to get to pull because
well I mean that's just it's going to be
rarer right so obviously it's going to
be not showing up as often and if we
just continue to right click with this
particular item and at some point you
can see the durability is going down and
it's going down and it's going down
until well the inevitable happens the
island breaks
so that is a custom Advanced item right
as always of course the code is going to
be available to you in the description
below in the GitHub repository but
that's gonna be it for this tutorial
right here next time we'll continue with
an advanced block right here hope to see
you there so yeah
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