[1.8] Player destroy block with pickaxe

[oznecniV97]

Hi guys,

I want to create a method to press a key and break a block (of stone or other) in front of me with my pickaxe.

I write this method but it do nothing and minecraft crash.

 

public static void rompi(){
	int max = Minecraft.getMinecraft().thePlayer.inventory.getCurrentItem().getMaxDamage();
	int curDam = Minecraft.getMinecraft().thePlayer.inventory.getCurrentItem().getItemDamage();
	int nextDam=Minecraft.getMinecraft().thePlayer.inventory.getCurrentItem().getItemDamage();
	while(curDam==nextDam){
		Minecraft.getMinecraft().thePlayer.swingItem();
		nextDam=Minecraft.getMinecraft().thePlayer.inventory.getCurrentItem().getItemDamage();
	}
}

 

swingItem() make a swing of my item, but in this while isn't true...

help 

[Failender]

firrst of all you need to destroy the block on server side.

second you cant use the Miencraft class on Server side, its client only

Pressing a key is client side (use a KeyHandler for it this thread should help http://www.minecraftforge.net/forum/index.php?topic=15960.0)

After that you need to send a packet to the server which infor,ms about the pressed button (this should helphttp://www.minecraftforge.net/forum/index.php/topic,20135.0.html)

[ratismal]

I want to create a method to press a key and break a block (of stone or other) in front of me with my pickaxe.

 

I'm having a little bit of a hard time understanding this sentence. Which of these scenarios are you trying to achieve?

 

a) You press the button. The block instantly breaks, and the pickaxe takes damage.

 

b) You press the button. This causes the player to dig the block until it breaks, like as you would with left clicking.

 

c) Other. Please clarify?

 

EDIT: What Failender mentioned is also very good. You should always be aware of which side you are working on; client or server. Any Minecraft functions are exclusively client side, so calling them on the server will result in a crash. You should avoid using those functions if possible.

[oznecniV97]

@ratismal

the b option. I want to press a button (I alredy use a KeyHandler to call this method) and the player dig the block until it breacks.

 

@Failander

I work ONLY on client side.

[ratismal]

Option B is relatively simple to execute.

 

What I would do is find the KeyBinding of the left click button, and press it.

I'm assuming this is the left click KeyBinding:

KeyBinding bind = FMLClientHandler.instance().getClient().gameSettings.keyBindAttack;

I'm assuming you want to stop once the block is broken. You also have to consider the player looking away from it. I would do a raytrace to see which block the player is looking at, store it's BlockPos, and compare it to the BlockPos the player is currently looking at. I'll let you figure out that part on your own. After, do something like this:

KeyBinding bind = FMLClientHandler.instance().getClient().gameSettings.keyBindForward;
if (!bind.isKeyDown() ) { //Player is not digging, make them start
    KeyBinding.setKeyBindState(bind.getKeyCode(), true);
else if (oldBlockPos != currentBlockPos) {//Player is no longer looking at the block. Either it has been broken, or they lost interest.
    KeyBinding.setKeyBindState(bind.getKeyCode(), false);
}

Keep in mind I haven't tested this, but it should work.

[Failender]

Ufff well that could be tricky

You will need a TickHandler (google event handling)

On keypress you will need to safe the block the player is looking at and in the Tickhandler simulate the left mouse button until the block is broken.

If you have no idea what I am talking about you probably shouldnt write this

[ratismal]

Yes, getting the "only break that block" done might take a bit of work.

 

If you don't mind me asking @oznecniV97, what do you need this for? If you're only breaking a single block, it might be easier just to manually hold down left click. If you're trying to make a mod to make mining easier, it would be far easier to just toggle left mouse button on and off yourself and not worry about only breaking a single block.

[oznecniV97]

@ratismal I want to make a mod that add a "macro" that do some things. One of this is breack a block with the selected item

 

in your code the player "press" the left mouse button while the command "KeyBinding.setKeyBindState(bind.getKeyCode(), false);" is used?

[Failender]

you need to use a tickhandler

[oznecniV97]

@failender you can explain me what is and how i use it?

[ratismal]

KeyBinding.setKeyBindState(bind.getKeyCode(), false);

is used to "depress" the button.

 

Essentially, when you press the button by setting it's state to true, it will remain pressed until something depresses it. For example, if you set the state to true, the act of physically using the button will depress it. Otherwise, you have to set the state to false or the button will remain pressed and will continue to break things.

 

This is why you need the TickHandler. You need it to check if the player is still looking at the block to determine if the block has been broken. When the player is no longer looking at the block, you need to set the state to false or the player will keep digging.

 

This thread may be of interest to you.

[Failender]

Ufff well that could be tricky

You will need a TickHandler (google event handling)

On keypress you will need to safe the block the player is looking at and in the Tickhandler simulate the left mouse button until the block is broken.

If you have no idea what I am talking about you probably shouldnt write this

[oznecniV97]

yeah but... what is the TickHandler? 

[Failender]

google event handling

[ratismal]

A Tick is 1/20 of a second. It is the base operation time in Minecraft. Everything the game is updated once a tick.

A Handler is something that handles things, usually events. (EventHandler, KeyHandler, etc).

Therefore, a TickHandler is a Handler that handles Ticks.

[oznecniV97]

Thanks @ratismal 

but how i use this events only in this method? after that i don't want to scan every single tick 

[Failender]

if you want to know how to use events. GOOGLE it