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[1.7.2] Detect when equipped item is changed


Zer0HD2

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Is there any event in 1.7.2 which allows you to execute code when the player switches what item they're holding? I'm trying to create a system whereby a player needs to meet certain requirements to use certain items/tools. So far I've been using PlayerTickEvent, and using dropOneItem() to make the player drop the item, and give them a chat message, but they receive the message ~5 times and drop the previous item they were holding too.

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What does your code look like?

 

Please use a gist.

I prefer spoilers.

 

You want to trigger something when the player changes his item, right?

I would use something like this in an living update event:

 

ItemStack oldItem;

if(!player.inventory.getCurrentItem().isItemEqual(oldItem){
     oldItem=player.inventory.getCurrentItem().copy();
     
     YOUR CODE HERE....

}

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Seeing as I asked him to paste quite a bit of code, I prefer gists, as they

  • Are syntax highlighted
  • Have line numbers (that can be highlighted from the URL)
  • Are forkable

 

but they are opened in an external window/tab ); i already have 23 tabs open.

Wait, maybe there is some way to embed them via a frame in a spoiler...

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... which is just because websites have the horrible habit of forcing external links to open in a new tab. If I want something in a new tab, I do it manually with the middle mouse button.

/rant.

 

This. Also, sorry, didn't realise people had replied to this - I'll post source code (both in a spoiler and in a gist :P) when I get home from work.

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Right, sorry it's taken so long for me to respond to this, been busy at work. Anyway, here is the code for my PlayerTickEvent:

 

Gist: https://gist.github.com/Zer0HD/9c2b3a54a8e6b61b2d07

 

 

 

@SubscribeEvent

public void onPlayerTick(PlayerTickEvent event)

{

EntityPlayer player = (EntityPlayer)event.player;

 

ItemStack itemstack = player.getCurrentEquippedItem();

 

if(itemstack != null && itemstack.getItem() instanceof ItemSword)

{

ExtendedPlayerProperties props = ExtendedPlayerProperties.fetchProperties(player);

 

int att = props.getStat("att");

 

Map<String, Integer> levelMap = new HashMap<String, Integer>();

 

levelMap.put("WOOD", 1);

levelMap.put("STONE", 2);

levelMap.put("copperMaterial", 4);

levelMap.put("bronzeMaterial", 5);

levelMap.put("GOLD", 5);

levelMap.put("IRON", 7);

levelMap.put("DIAMOND", 8);

levelMap.put("obsidianMaterial", 10);

 

ItemSword sword = (ItemSword)itemstack.getItem();

String mat = sword.getToolMaterialName();

if(att < levelMap.get(mat))

{

player.dropOneItem(false);

 

player.addChatMessage(new ChatComponentText(EnumChatFormatting.GRAY + "You do not have a high enough attack level to use this item."));

}

}

 

}

 

 

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