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get coordinates of the block the player looking at


DoctorG_Mystery

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here:

package drgmystery.darklight.events;

import net.minecraft.item.Item;
import net.minecraft.block.Blocks;
import net.minecraft.entity.player.PlayerEntity;
import net.minecraft.item.ItemStack;
import net.minecraft.item.ItemUseContext;
import net.minecraft.util.ActionResult;
import net.minecraft.util.ActionResultType;
import net.minecraft.util.Hand;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.World;

public class DarklightPlaceTest extends Item{

    }

    @Override
        public ActionResult<ItemStack> useOn(PlayerEntity player, World world, Hand hand, BlockPos Pos){
            if(!world.isClientSide){
                 ;
                double x = player.position().x();
                double y = player.position().y();
                double z = player.position().z(); 
                BlockPos blockPos = new BlockPos(x, y, z);
                world.setBlockAndUpdate(blockPos, Blocks.DIAMOND_BLOCK.defaultBlockState());
            }
            return ActionResult.pass(null);
        }

    @Override
    public ActionResultType useOn(ItemUseContext p_195939_1_) {
        // TODO Auto-generated method stub
        return super.useOn(p_195939_1_);
    }

}

edit: sorry I only read: what has been generated the error?

Edited by DoctorG_Mystery
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errors at this points:

            if(!world.isClientSide){
                double x = player.position().x();
                double y = player.position().y();
                double z = player.position().z(); 
                BlockPos blockPos = new BlockPos(x, y, z);
                world.setBlockAndUpdate(blockPos, Blocks.DIAMOND_BLOCK.defaultBlockState());
            }

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look better so?

        PlayerEntity player = null;
        World world = null;
        Hand hand = null;
        if(!world.isClientSide){
             ;
           double x = player.position().x();
           double y = player.position().y();
           double z = player.position().z(); 
           BlockPos blockPos = new BlockPos(x, y, z);
            world.setBlockAndUpdate(blockPos, Blocks.DIAMOND_BLOCK.defaultBlockState());
        }

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no errors more

        PlayerEntity player;
        World world;
        Hand hand;
        
    @Override
    public ActionResultType useOn(ItemUseContext p_195939_1_) {

        if(!world.isClientSide){
             ;
           double x = player.position().x();
           double y = player.position().y();
           double z = player.position().z(); 
           BlockPos blockPos = new BlockPos(x, y, z);
            world.setBlockAndUpdate(blockPos, Blocks.DIAMOND_BLOCK.defaultBlockState());
        }
        return super.useOn(p_195939_1_);
    }

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I wanted to add that I am doing "learning by doing" and not only understand Forge mobing but also Java as well as the IDE Eclipse, so when I look very stupid (and I feel stupid to myself because I sometimes don't check it what you mean) so sorry for that and thank you for your time for my problem with Probgarmmiren ^^

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