Hi, I'm trying to get the coordinates of the block the player is looking at from a distance. I tried using rayTrace but that just returned coordinates from a couple of blocks in front of me. How can I do this?

Thanks

1. Please post your code.

2. Where are you trying to call rayTrace?

 

 

0

 Advanced issues found

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1

19 minutes ago, DavidM said:

1. Please post your code.

			RayTraceResult raytraceresult = this.rayTrace(worldIn, playerIn, RayTraceContext.FluidMode.ANY);
			double posx = raytraceresult.getHitVec().x;
			double posy = raytraceresult.getHitVec().y;
			double posz = raytraceresult.getHitVec().z;
			
			System.out.println(posx);
			System.out.println(posy);
			System.out.println(posz);

2. Where are you trying to call rayTrace?

In an onItemRightClick event

 

Edited July 21, 20196 yr by fishsaucey

21 minutes ago, DavidM said:

1. Please post your code.

2. Where are you trying to call rayTrace?

 

1: 

			RayTraceResult raytraceresult = this.rayTrace(worldIn, playerIn, RayTraceContext.FluidMode.ANY);
			double posx = raytraceresult.getHitVec().x;
			double posy = raytraceresult.getHitVec().y;
			double posz = raytraceresult.getHitVec().z;
			
			System.out.println(posx);
			System.out.println(posy);
			System.out.println(posz);

 

2: In an onItemRightClick event

The raytrace returns the position where the ray hits the block, not the position of the block.

I dont really think that matters in my case, I just need to find how to extend the range

2 hours ago, fishsaucey said:

I dont really think that matters in my case

2 hours ago, DavidM said:

The raytrace returns the position where the ray hits the block, not the position of the block.

This is why your raytrace does not return the position of the block.

 

Get the player's looking direction and apply some trigonometry to extend the range in the direction of the retrace.

Maybe this will work as replacement for default rayTrace method:

import net.minecraft.entity.effect.LightningBoltEntity;
import net.minecraft.entity.player.PlayerEntity;
import net.minecraft.item.Item;
import net.minecraft.item.ItemGroup;
import net.minecraft.item.ItemStack;
import net.minecraft.util.ActionResult;
import net.minecraft.util.Hand;
import net.minecraft.util.math.*;
import net.minecraft.world.World;
import net.minecraft.world.server.ServerWorld;

public class CustomItem extends Item {
    public CustomItem() {
        super(new Item.Properties().group(ItemGroup.TOOLS));
    }

    @Override
    public ActionResult<ItemStack> onItemRightClick(World worldIn, PlayerEntity playerIn, Hand handIn) {
        if (worldIn instanceof ServerWorld) {
            ServerWorld world = (ServerWorld) worldIn;

            RayTraceResult raytraceresult = rayTrace(worldIn, playerIn, RayTraceContext.FluidMode.ANY);
            double posX = raytraceresult.getHitVec().x;
            double posY = Math.floor(raytraceresult.getHitVec().y);
            double posZ = raytraceresult.getHitVec().z;

            System.out.println(posX);
            System.out.println(posY);
            System.out.println(posZ);

            BlockPos pos = new BlockPos(posX, posY, posZ);

            LightningBoltEntity l = new LightningBoltEntity(worldIn, posX, posY, posZ, false);
            world.addLightningBolt(l);
        }
        
        return super.onItemRightClick(worldIn, playerIn, handIn);
    }

    protected static RayTraceResult rayTrace(World worldIn, PlayerEntity player, RayTraceContext.FluidMode fluidMode) {
        float f = player.rotationPitch;
        float f1 = player.rotationYaw;
        Vec3d vec3d = player.getEyePosition(1.0F);
        float f2 = MathHelper.cos(-f1 * ((float)Math.PI / 180F) - (float)Math.PI);
        float f3 = MathHelper.sin(-f1 * ((float)Math.PI / 180F) - (float)Math.PI);
        float f4 = -MathHelper.cos(-f * ((float)Math.PI / 180F));
        float f5 = MathHelper.sin(-f * ((float)Math.PI / 180F));
        float f6 = f3 * f4;
        float f7 = f2 * f4;
        double d0 = 8192;
        Vec3d vec3d1 = vec3d.add((double)f6 * d0, (double)f5 * d0, (double)f7 * d0);
        return worldIn.rayTraceBlocks(new RayTraceContext(vec3d, vec3d1, RayTraceContext.BlockMode.OUTLINE, fluidMode, player));
    }
}

I just got it from Item.rayTrace

and changed this line:

    double d0 = double d0 = player.getAttribute(PlayerEntity.REACH_DISTANCE).getValue();;

to:

    double d0 = 8192d;

You can change the value if you want.

Edited September 29, 20205 yr by Qplay123
Removed unused import