[1.7.10][Solved] Replace item with another

[Jetfan16ladd]

I am trying to make a item be replaced with another onEntitySwing(Left Click). I looked around on the forums and online but couldn't figure it out.

Here is my current code:

@Override
    onEntitySwing() {
    	};

 

[Ernio]

I will start with this: "Please, go learn basics of Java."

Nothing will help you if you can't even override methods.

 

 

You need to override vanilla Item.class's method:

    public boolean onEntitySwing(EntityLivingBase entityLiving, ItemStack stack)
    {
        return false;
    }

 

You will want to grab 'entityLiving', check if its player (instanceof/cast), then get current held item (the stack) and set it different, new one.

playerIn.inventory.currentItem

[Jetfan16ladd]

Sorry that I don't know that much java. I really don't want to learn it because I wont need it other then for this.

I fixed the override but I don't know how to "grab 'entityLiving', check if its player (instanceof/cast), then get current held item (the stack) and set it different, new one." and idk what the code at bottem is.

 

[Abastro]

Sorry that I don't know that much java. I really don't want to learn it because I wont need it other then for this.

I fixed the override but I don't know how to "grab 'entityLiving', check if its player (instanceof/cast), then get current held item (the stack) and set it different, new one." and idk what the code at bottem is.

You should learn basic java to do that exactly...

[Jetfan16ladd]

On a side note, does anyone know of any videos that are easy to follow that explain basic java.

[Abastro]

On a side note, does anyone know of any videos that are easy to follow that explain basic java.

http://lmgtfy.com/?q=java+tutorial+for+beginners

Find the videos there.

[Jetfan16ladd]

playerIn.inventory.currentItem

 

What is playerIn?

 

[Guest]

the playerIn is the player.

[Jetfan16ladd]

the playerIn is the player.

So where do I put that code?

 

[TheRealMcrafter]

playerIn is a name Ernio assigned to EntityLivingBase.

 

Basically you want to check if EntityLivingBase is an instance of EntityPlayer. In java its a simple as this:

 

public boolean onEntitySwing(EntityLivingBase theEntityYoureChecking, ItemStack theItemStackTheEntityIsHolding){
    if (theEntityYoureChecking instanceof EntityPlayer){
        //The Entity Is A Player.
    }
    return false;
}

 

If the Entity is a player, then we want to replace the item. If it is a zombie, or a chicken, we don't. So we can add an else statement.

 

public boolean onEntitySwing(EntityLivingBase theEntityYoureChecking, ItemStack theItemStackTheEntityIsHolding){
    if (theEntityYoureChecking instanceof EntityPlayer){
        //The Entity Is A Player.
        return true;
    } else {
        //The Entity Is Not A Player.
        return false;
    }
}

 

Since the entity is a player, we want to get the current stack theyre holding, and then replace it with your own. You can do this by casting the Entity to EntityPlayer:

 

 
    EntityPlayer player = (EntityPlayer) theEntityYoureChecking;
                                            
                                           ^
                               That is called "Casting"

 

 

and then getting the slot theyre currently using, like this:

 

public boolean onEntitySwing(EntityLivingBase theEntityYoureChecking, ItemStack theItemStackTheEntityIsHolding){
    if (theEntityYoureChecking instanceof EntityPlayer){
        EntityPlayer player = (EntityPlayer) theEntityYoureChecking;

        Int slot= player.inventory.currentItem;

        //The Entity Is A Player.
        return true;
    } else {
        //The Entity Is Not A Player.
        return false;
    }
}

 

To replace it with your own items, you need to create a new ItemStack() with the items you want. It is done like this:

 

ItemStack stack = new ItemStack(ItemYouWantHere, AmountOfItems);

an example:

ItemStack stack = new ItemStack(Items.egg, 5);

 

This would make a new ItemStack with 5 eggs in it. You can add that to your method.

 

 
public boolean onEntitySwing(EntityLivingBase theEntityYoureChecking, ItemStack theItemStackTheEntityIsHolding){
    if (theEntityYoureChecking instanceof EntityPlayer){
        //The Entity Is A Player.

        EntityPlayer player = (EntityPlayer) theEntityYoureChecking;

        Int slot = player.inventory.currentItem;

        ItemStack stack = new ItemStack(Items.egg, 5);
        return true;
    } else {
        //The Entity Is Not A Player.
        return false;
    }
}

 

Now, it is very simple. Just replace the players current held ItemStack with the one you created. That is done like this:

 

player.inventory.setInventorySlotContents(slotToPutItIn, itemStackToPut);

 

Since we already have the slot the player is currently using, and we have out stack to put in it, we can add the final part to our method:

 

public boolean onEntitySwing(EntityLivingBase theEntityYoureChecking, ItemStack theItemStackTheEntityIsHolding){
    if (theEntityYoureChecking instanceof EntityPlayer){
        //The Entity Is A Player.

        EntityPlayer player = (EntityPlayer) theEntityYoureChecking;

        Int slot = player.inventory.currentItem;

        ItemStack stack = new ItemStack(Items.egg, 5);

        player.inventory.setInventorySlotContents(slot, stack);
        return true;
    } else {
        //The Entity Is Not A Player.
        return false;
    }
}

 

Hope I helped!

[Thornack]

1) use System.out.println(); in various places to aid in debugging (if you type Sysout or sysout and click the ctrl and the space keys on keyboard) this is a short way of typing System.out.println();

 

3) Watch some java tutorials before posting because people always get upset if you dont have a decent understanding of JAVA - I know this from experience

 

4) some useful modding links:

 

Useful Resources

 

 

http://see.stanford.edu/see/lecturelist.aspx?coll=824a47e1-135f-4508-a5aa-866adcae1111

JAVA Programming Lectures

 

http://bmanolov.free.fr/javaoperators.php

Java Operators doc

 

www.google.com

Google - great resource

 

https://www.youtube.com/user/nealegaming

a Youtube series for how to add some stuff in Minecraft 1.7.2/1.7.10 pretty good overview

 

http://greyminecraftcoder.blogspot.com.au/2013/12/overview-of-forge-and-what-it-can-do.html

A Blog overview of how Minecraft Forge Works

 

http://www.wuppy29.com/minecraft/modding-tutorials/forge-modding-1-7/

Alot of good Tutorials for modding Minecraft 1.7.2 and earlier versions

 

http://anthony-lomeli.net/tutorials/tutorial-how-to-make-a-simple-multiblock-structure

Multiblock structure tutorial

 

http://greyminecraftcoder.blogspot.com.au/2013/07/rendering-transparent-blocks.html

rendering invisible blocks

 

Minecraft Forge's functions and fields map

https://github.com/MinecraftForge/FML/tree/1.7.10/conf

 

http://jabelarminecraft.blogspot.ca/p/minecraft-forge-172-event-handling.html

Event Handling

 

http://www.minecraftforum.net/topic/2001807-172how-to-code-custom-3d-armor-models-3d-weapons-or-items-tutorial-by-senpaisubaraki/

3D Armour

 

 

https://www.youtube.com/watch?v=LBF0oXZ0VyY

http://jabelarminecraft.blogspot.ca/p/complex-entity-models-including.html

Animation Tutorials

 

http://www.minecraftforum.net/forums/mapping-and-modding/resource-packs/resource-pack-discussion/1256350-animation-in-resource-packs-a-minecraft-1-6

Item texture and block texture animation tutorials

 

https://www.youtube.com/watch?v=D3U2JTicSjg&index=2&list=PL6lD77ZPqAf3XCIf86jzxxFsJILbdMo_G

Rendering Tutorials

 

 

5) Look at Vanilla classes figure out how they work - great way to accomplish stuff you want. If  modding in Eclipse look in ReferenceLibraries\forgeSrc to find the source code for Minecraft

 

6) in Eclipse pressing the Ctrl and the H keys together when in the Package Explorer is useful in finding stuff in your code/vanilla code

 

7) If you want to figure out how a function is called right click on it and press Ctrl + Alt + H keys together to see where it is called in code

 

The Thank You button is located ---------------------------------> That way ish ---------------------->