Make player break blocks programmically

[satyamedh]

So I want the player to break the block. Like if he is in survival break with correct speed, in creative instamine. I also want it to drop

I am assuming there is a function I need to call in order for that to happen

 

thx!

[satyamedh]

9 minutes ago, diesieben07 said:

Look at Minecraft#sendClickBlockToController for the client-side part.

Uhh can you explain? I am using block.harvestBlock. figuring out its arguments

[satyamedh]

Okay

Just now, diesieben07 said:

Well, that's the last step of breaking a block. Before that comes showing the breaking damage, etc. I pointed you to the entrypoint of the whole process ("the player just pressed the left mouse button this tick - do something with that information"). You need to trace the code path from there (and across the network packets being sent) and figure out which methods are being called.

It's not as simple as just "call method X".

I'm like a real newbie to the blocks n stuff. How can I trace the code? do I set a debug breakpoint on every line or wut?

[satyamedh]

1 minute ago, diesieben07 said:

You open the code in your IDE. Look at which methods are called, click on them, see what they do, etc.

Breakpoints definitely do help if you have trouble understanding what exactly is going on.

Okay, How to I use this thing u told me?

 

17 minutes ago, diesieben07 said:

Look at Minecraft#sendClickBlockToController for the client-side part.

---------------^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-------------------------------

[satyamedh]

Just now, diesieben07 said:

I am not sure I understand your question.

How to check what events are fired I mean.

[satyamedh]

And LOL I answered so quick there :')

[satyamedh]

Just now, diesieben07 said:

Events? I did not say anything about events.

I mean the funcions

And what a quick reply :rofl:

Edited October 29, 2020 by satyamedh

[satyamedh]

Just now, diesieben07 said:

You look at the code.

Where do I start

[satyamedh]

Just now, diesieben07 said:

Here

Exactly what class isit? How do i go there in intellij?

[satyamedh]

4 minutes ago, diesieben07 said:

Use ctrl-shift-alt-n to search for symbols, then enter the method name.

Thanks!

[satyamedh]

1 hour ago, diesieben07 said:

Use ctrl-shift-alt-n to search for symbols, then enter the method name.

Hello! I have this code now:

public static boolean attack(){
        ClientPlayerEntity player = Minecraft.getInstance().player;
        if ((player == null)) {return false;}

        RayTraceResult lookingAt = Minecraft.getInstance().objectMouseOver;
        assert lookingAt != null;
        System.out.println(lookingAt.getType().toString());
        if (lookingAt.getType() == RayTraceResult.Type.BLOCK) {
            if (lookingAt.getType().toString() == "a"){
                System.out.println("Yeaaa");
            }
            double x = lookingAt.getHitVec().getX();
            double y = lookingAt.getHitVec().getY();
            double z = lookingAt.getHitVec().getZ();
            Minecraft.getInstance().particles.addBlockHitEffects(new BlockPos(x, y, z), (BlockRayTraceResult) lookingAt);
            Minecraft.getInstance().player.swingArm(Hand.MAIN_HAND);
            player.world.getBlockState(new BlockPos(x, y, z))
                    .getBlock().
                            harvestBlock(
                    player.world,
                    player,
                    new BlockPos(x, y, z),
                    player.world.getBlockState(new BlockPos(x, y, z)),
                    player.world.getTileEntity(new BlockPos(x, y, z)),
                                    player.getHeldItemMainhand()
                                    );
        }


        return true;
    }

And It just animates the block breaking, but dosent drop the block. pls help

[satyamedh]

2 minutes ago, diesieben07 said:

Yes, if you are on the client you can't just call harvestBlock. Creating drops is a server-side operation.

 

Then, ?

 

[satyamedh]

2 minutes ago, diesieben07 said:

Well, first you need to decide if this is a client-only mod or not.

It is both

[satyamedh]

3 hours ago, diesieben07 said:

It cannot be both a client-only mod and not a client-only mod.

That's like saying something is alive and dead at the same time.

It is basically a helper mod for my project. All I need this mod to do is to do what a normal player can whenever I ask it to do something from python. the python-java communication is flawless. just need a way to contol the player. so I guess it is up to you who says what I need  

[satyamedh]

25 minutes ago, diesieben07 said:

That sounds like a client-only mod to me.

okay. so how do I continue?

[Draco18s]

The client, as the client, obviously has some way to make blocks break and drop their loot on the server.

It doesn't happen by magic (unless packets are magic).

All you need to do is find the code that the client already does and make it run automatically instead of on user input.

Edited October 29, 2020 by Draco18s

[satyamedh]

2 minutes ago, Draco18s said:

The client, as the client, obviously has some way to make blocks break and drop their loot on the server.

It doesn't happen by magic (unless packets are magic).

All you need to do is find the code that the client already does and make it run automatically instead of on user input.

Do u know the function that is called?

[satyamedh]

1 minute ago, diesieben07 said:

I will keep quoting this until you read it.

I checked it a long time ago. heres the new code I updated but didnt post:

public static boolean attack(){
        ClientPlayerEntity player = Minecraft.getInstance().player;
        if ((player == null)) {return false;}

        RayTraceResult lookingAt = Minecraft.getInstance().objectMouseOver;
        assert lookingAt != null;
        System.out.println(lookingAt.getType().toString());
        if (lookingAt.getType() == RayTraceResult.Type.BLOCK) {
            if (lookingAt.getType().toString() == "a"){
                System.out.println("Yeaaa");
            }
            double x = lookingAt.getHitVec().getX();
            double y = lookingAt.getHitVec().getY();
            double z = lookingAt.getHitVec().getZ();
            net.minecraftforge.client.event.InputEvent.ClickInputEvent inputEvent = net.minecraftforge.client.ForgeHooksClient.onClickInput(0, Minecraft.getInstance().gameSettings.keyBindAttack, Hand.MAIN_HAND);
            if (inputEvent.shouldSwingHand()) {
                Minecraft.getInstance().particles.addBlockHitEffects(new BlockPos(x, y, z), (BlockRayTraceResult) lookingAt);
                Minecraft.getInstance().player.swingArm(Hand.MAIN_HAND);
            }
            player.world.getBlockState(new BlockPos(x, y, z))
                    .getBlock().
                            harvestBlock(
                    player.world,
                    player,
                    new BlockPos(x, y, z),
                    player.world.getBlockState(new BlockPos(x, y, z)),
                    player.world.getTileEntity(new BlockPos(x, y, z)),
                                    player.getHeldItemMainhand()
                                    );
        }


        return true;
    }

 

[satyamedh]

It is basically what the client does

[Kalma]

I would suggest you try with Block#destroyBlock, instead of Block#harvestBlock:

 

            player.world.getBlockState(new BlockPos(x, y, z))
                    .getBlock().
                    .destroyBlock(player, false/true);

or you can also use Block#spawnDrops whenever needed.

 

[Draco18s]

11 minutes ago, Kalma said:

I would suggest you try with Block#destroyBlock, instead of Block#harvestBlock:

 

            player.world.getBlockState(new BlockPos(x, y, z))
                    .getBlock().
                    .destroyBlock(player, false/true);

or you can also use Block#spawnDrops whenever needed.

 

This cannot be done client side. #ReadTheThread.

[satyamedh]

On 10/29/2020 at 11:05 PM, diesieben07 said:

It is not at all related to what the method I quoted does.

bruh Thats the only command intellij tells me

[satyamedh]

On 10/30/2020 at 12:52 AM, Kalma said:

I would suggest you try with Block#destroyBlock, instead of Block#harvestBlock:

 

            player.world.getBlockState(new BlockPos(x, y, z))
                    .getBlock().
                    .destroyBlock(player, false/true);

or you can also use Block#spawnDrops whenever needed.

 

destroyBlock dosent exists

[Kalma]

hahahahaha!

 

I am not sure if this is what you really need as draco18s estated. I mean, blockDestroy is server-side, so you should change most of the code you posted since it is definitely client-side. Besides that, you can not input "false/true"! You have to call the function using "false" (no drops) or true (drop items)...

 

I would recommend you follow diesieben7 suggestion, and take a look to "Minecraft#sendClickBlockToController for the client-side part."