I'm trying to make a tool that mines a 3x3 area based on the side of the block the player broke. For example if I broke a block while having my cursor on one of the faces, then it would mine blocks around it on the same plane. So far I'm using the direction of the entity and pitch.

 

package com.nindybun.miningtool.objects.items;

import com.sun.org.apache.xerces.internal.xs.XSIDCDefinition;
import net.minecraft.block.BlockState;
import net.minecraft.block.DirectionalBlock;
import net.minecraft.client.Minecraft;
import net.minecraft.client.MinecraftGame;
import net.minecraft.client.renderer.FaceDirection;
import net.minecraft.client.renderer.Vector3d;
import net.minecraft.client.util.ITooltipFlag;
import net.minecraft.entity.LivingEntity;
import net.minecraft.entity.player.PlayerEntity;
import net.minecraft.item.IItemTier;
import net.minecraft.item.ItemStack;
import net.minecraft.item.PickaxeItem;
import net.minecraft.util.Direction;
import net.minecraft.util.Hand;
import net.minecraft.util.math.BlockPos;
import net.minecraft.util.math.MathHelper;
import net.minecraft.util.math.RayTraceResult;
import net.minecraft.util.math.Vec3d;
import net.minecraft.util.text.ITextComponent;
import net.minecraft.util.text.StringTextComponent;
import net.minecraft.world.IBlockReader;
import net.minecraft.world.World;
import net.minecraftforge.client.event.ClientChatEvent;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

import javax.annotation.Nullable;
import java.util.List;

public class TestDrill extends PickaxeItem {
    private static final Logger LOGGER = LogManager.getLogger();
    public TestDrill(IItemTier tier, int attackDamageIn, float attackSpeedIn, Properties builder) {
        super(tier, attackDamageIn, attackSpeedIn, builder);
    }

    @Override
    public void addInformation(ItemStack stack, @Nullable World worldIn, List<ITextComponent> tooltip, ITooltipFlag flagIn) {
        tooltip.add(new StringTextComponent("This is a test drill."));
        super.addInformation(stack, worldIn, tooltip, flagIn);
    }

    @Override
    public boolean onBlockDestroyed(ItemStack stack, World worldIn, BlockState state, BlockPos pos, LivingEntity entityLiving) {
        float pitch = entityLiving.getPitch(0); //Vertical

        if (pitch < 0){
            pitch = -pitch;
        }
        if ((entityLiving.getHorizontalFacing() == Direction.NORTH || entityLiving.getHorizontalFacing() == Direction.SOUTH) & (pitch != 90)) {
            //mines North/South
            worldIn.destroyBlock(pos.add(0, 1, 0), true);
            worldIn.destroyBlock(pos.add(0, -1, 0), true);

            worldIn.destroyBlock(pos.add(1, 0, 0), true);
            worldIn.destroyBlock(pos.add(-1, 0, 0), true);

            worldIn.destroyBlock(pos.add(1, 1, 0), true);
            worldIn.destroyBlock(pos.add(-1, -1, 0), true);

            worldIn.destroyBlock(pos.add(1, -1, 0), true);
            worldIn.destroyBlock(pos.add(-1, 1, 0), true);
        } else if ((entityLiving.getHorizontalFacing() == Direction.WEST || entityLiving.getHorizontalFacing() == Direction.EAST) & (pitch != 90)){
            //Mines West/east
            worldIn.destroyBlock(pos.add(0, 1, 0), true);
            worldIn.destroyBlock(pos.add(0, -1, 0), true);

            worldIn.destroyBlock(pos.add(0, 0, 1), true);
            worldIn.destroyBlock(pos.add(0, 0, -1), true);

            worldIn.destroyBlock(pos.add(0, 1, 1), true);
            worldIn.destroyBlock(pos.add(0, -1, -1), true);

            worldIn.destroyBlock(pos.add(0, -1, 1), true);
            worldIn.destroyBlock(pos.add(0, 1, -1), true);
        } else if (pitch == 90){
            //Mines Up/Down
            worldIn.destroyBlock(pos.add(1, 0, 0), true);
            worldIn.destroyBlock(pos.add(-1, 0, 0), true);

            worldIn.destroyBlock(pos.add(0, 0, 1), true);
            worldIn.destroyBlock(pos.add(0, 0, -1), true);

            worldIn.destroyBlock(pos.add(1, 0, 1), true);
            worldIn.destroyBlock(pos.add(-1, 0, -1), true);

            worldIn.destroyBlock(pos.add(-1, 0, 1), true);
            worldIn.destroyBlock(pos.add(1, 0, -1), true);
        }




        return super.onBlockDestroyed(stack, worldIn, state, pos, entityLiving);
    }
}

 

Edited May 8, 20205 yr by NindyBun

Look at how vanilla uses Direction.getFacingDirections or use Direction.getFacingFromVector with the player's look vector.