(1.10.2) What does on impact netherrack look like for a projectile?

[gurujive]

Does anyone have an example of this, or where its located in the src.

[Animefan8888]

What are you asking exactly i dont quite understand.

[gurujive]

I'm looking to make it to where if a projectile comes into contact with netherrack it will set a tiny 1 block fire if possible.

[gurujive]

like netherrack and coal block...

 

just those 2.

[Animefan8888]

Ifnit is a custom projectile there is an onImpact method, otherwise use the ThrowableImpactEvent

[gurujive]

this is crashing the game when i throw the entity:

"

private int xTile;

private int yTile;

private int zTile;

"

 

"

public void onUpdate()

    {

    super.onUpdate();

    BlockPos blockpos = new BlockPos(this.xTile, this.yTile, this.zTile);

"

 

"

    protected void onImpact(RayTraceResult result)

if (!this.worldObj.isRemote)

        {

            this.setDead();

            if (worldObj.getBlockState(null) == Blocks.COAL_BLOCK.getDefaultState())

{

this.worldObj.setBlockState( null, Blocks.FIRE.getDefaultState());

}

"

 

 

 

package guru.tbe.entity;

import net.minecraft.block.Block;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.entity.monster.EntityCreeper;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.init.Blocks;
import net.minecraft.init.SoundEvents;
import net.minecraft.item.Item;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.network.datasync.DataParameter;
import net.minecraft.network.datasync.DataSerializers;
import net.minecraft.network.datasync.EntityDataManager;
import net.minecraft.util.DamageSource;
import net.minecraft.util.EnumParticleTypes;
import net.minecraft.util.SoundCategory;
import net.minecraft.util.datafix.DataFixer;
import net.minecraft.util.math.BlockPos;
import net.minecraft.util.math.RayTraceResult;
import net.minecraft.world.World;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;

public class EntityFireOrb extends EntityOrb
{
private static final DataParameter<Integer> FUSE = EntityDataManager.<Integer>createKey(EntityFireOrb.class, DataSerializers.VARINT);
private int explosionPower;
private int fuse;
private int xTile;
private int yTile;
private int zTile;

public EntityFireOrb(World worldIn)
    {
        super(worldIn);
    }
public EntityFireOrb(World worldIn, EntityLivingBase throwerIn)
    {
        super(worldIn, throwerIn);
        this.fuse = 140;
    }
    protected void entityInit()
    {
        this.dataManager.register(FUSE, Integer.valueOf(140));
    }
    protected boolean canTriggerWalking()
    {
        return false;
    }
    public void onUpdate()
    {
    	super.onUpdate();
    	BlockPos blockpos = new BlockPos(this.xTile, this.yTile, this.zTile);
    	this.worldObj.spawnParticle(EnumParticleTypes.FLAME, posX + (worldObj.rand.nextFloat() - worldObj.rand.nextFloat()) / 2, posY + (worldObj.rand.nextFloat() / -2 - worldObj.rand.nextFloat()) / -1, posZ + (worldObj.rand.nextFloat() - worldObj.rand.nextFloat()) / 2, 0, 0, 0);
        --this.fuse;
        if (this.fuse <= 0)
        {
            this.setDead();

            if (!this.worldObj.isRemote)
            {
                this.explode();
            }
        }
        else
        {
            this.handleWaterMovement();
        }
        this.isImmuneToFire();
    }
    private void explode()
    {
        float f = -1.0F;
        this.worldObj.createExplosion(this, this.posX, this.posY + (double)(this.height / 16.0F), this.posZ, (float)this.explosionPower, isDead);
    }
    protected void onImpact(RayTraceResult result)
    {
    	
        if (result.entityHit != null)
        {
            double i = 0;        
            if (!this.isWet() && result.entityHit instanceof EntityCreeper)
            {
            	((EntityCreeper) result.entityHit).ignite();	
            }           
            if (result.entityHit instanceof EntityLivingBase)
            {
                i = 4.7;
            }
            result.entityHit.attackEntityFrom(DamageSource.causeThrownDamage(this, this.getThrower()), (float)i);
            result.entityHit.setFire(;
            float f = 0.0F;
            this.worldObj.createExplosion(this, this.posX, this.posY + (double)(this.height / 16.0F), this.posZ, (float)this.explosionPower, true);
        }
        if (!this.worldObj.isRemote)
        {
            this.setDead();
            if (worldObj.getBlockState(null) == Blocks.COAL_BLOCK.getDefaultState())
		{
			this.worldObj.setBlockState( null, Blocks.FIRE.getDefaultState());
		}
            worldObj.playSound((EntityPlayer)null, posX, posY, posZ, SoundEvents.BLOCK_LAVA_POP, SoundCategory.NEUTRAL, 1.3F, 1.5F / (worldObj.rand.nextFloat() * 0.4F + 0.8F));
        }
        if (this.isInWater())
        {
            {
                worldObj.playSound((EntityPlayer)null, posX, posY, posZ, SoundEvents.BLOCK_FIRE_EXTINGUISH, SoundCategory.NEUTRAL, 0.3F, 1.5F / (worldObj.rand.nextFloat() * 0.4F + 0.8F));
            }
        }
        if (this.isWet())
        {    
        	this.extinguish();
            this.worldObj.spawnParticle(EnumParticleTypes.BLOCK_CRACK, this.posX + (worldObj.rand.nextFloat() - worldObj.rand.nextFloat()) / 3, this.posY + (worldObj.rand.nextFloat() - worldObj.rand.nextFloat()) / 2, this.posZ + (worldObj.rand.nextFloat() - worldObj.rand.nextFloat()) / 2, ((double)this.rand.nextFloat() - 0.5D) * 0.08D, ((double)this.rand.nextFloat() - 0.5D) * 0.08D, ((double)this.rand.nextFloat() - 0.5D) * 0.08D, new int[] {Block.getIdFromBlock(Blocks.FLOWING_LAVA)});
            this.worldObj.spawnParticle(EnumParticleTypes.SMOKE_LARGE, this.posX, this.posY, this.posZ, 0.0D, 0.1D, 0.0D, new int[0]);
            this.worldObj.spawnParticle(EnumParticleTypes.CLOUD, this.posX, this.posY, this.posZ, 0.0D, 0.1D, 0.0D, new int[0]);
            worldObj.playSound((EntityPlayer)null, posX, posY, posZ, SoundEvents.BLOCK_FIRE_EXTINGUISH, SoundCategory.NEUTRAL, 0.3F, 1.5F / (worldObj.rand.nextFloat() * 0.4F + 0.8F));
        }
        if (!this.isWet())
        {
        	for (int i = 0; i < 3; ++i)
            {
            	this.worldObj.spawnParticle(EnumParticleTypes.LAVA, posX + (worldObj.rand.nextFloat() - worldObj.rand.nextFloat()) / 2, posY + (worldObj.rand.nextFloat() - worldObj.rand.nextFloat()) / 2, posZ + (worldObj.rand.nextFloat() - worldObj.rand.nextFloat()) / 2, 0, 0, 0);
            }
            for (int i = 0; i < 12; ++i)
            {
                this.worldObj.spawnParticle(EnumParticleTypes.BLOCK_CRACK, this.posX + (worldObj.rand.nextFloat() - worldObj.rand.nextFloat()) / 2, this.posY + (worldObj.rand.nextFloat() - worldObj.rand.nextFloat()) / 2, this.posZ + (worldObj.rand.nextFloat() - worldObj.rand.nextFloat()) / 2, ((double)this.rand.nextFloat() - 0.5D) * 0.08D, ((double)this.rand.nextFloat() - 0.5D) * 0.08D, ((double)this.rand.nextFloat() - 0.5D) * 0.08D, new int[] {Block.getIdFromBlock(Blocks.FLOWING_LAVA)});
            }
        }
    }
    public void writeEntityToNBT(NBTTagCompound tagCompound)
    {
        super.writeEntityToNBT(tagCompound);
        tagCompound.setInteger("ExplosionPower", this.explosionPower);
        tagCompound.setShort("Fuse", (short)this.getFuse());
    }
    public void readEntityFromNBT(NBTTagCompound tagCompund)
    {
        super.readEntityFromNBT(tagCompund);
        this.setFuse(tagCompund.getShort("Fuse"));
        if (tagCompund.hasKey("ExplosionPower", 99))
        {
            this.explosionPower = tagCompund.getInteger("ExplosionPower");
        }
    }
    public void setFuse(int fuseIn)
    {
        this.dataManager.set(FUSE, Integer.valueOf(fuseIn));
        this.fuse = fuseIn;
    }

    public void notifyDataManagerChange(DataParameter<?> key)
    {
        if (FUSE.equals(key))
        {
            this.fuse = this.getFuseDataManager();
        }
    }  
    public int getFuseDataManager()
    {
        return ((Integer)this.dataManager.get(FUSE)).intValue();
    }
    public int getFuse()
    {
        return this.fuse;
    }   
    public float getBrightness(float partialTicks)
    {
        return 0.001F;
    }
    @SideOnly(Side.CLIENT)
    public int getBrightnessForRender(float partialTicks)
    {
    	return 15728880;
    }
}

[Animefan8888]

Why not show the crash report in the spoiler.

[gurujive]

ahha alright 

 

 

---- Minecraft Crash Report ----

// Don't do that.

 

Time: 8/11/16 2:56 AM

Description: Ticking entity

 

java.lang.NullPointerException: Ticking entity

at net.minecraft.world.World.isOutsideBuildHeight(World.java:257)

at net.minecraft.world.World.getBlockState(World.java:905)

at guru.tbe.entity.EntityFireOrb.onImpact(EntityFireOrb.java:98)

at guru.tbe.entity.EntityOrb.onUpdate(EntityOrb.java:223)

at guru.tbe.entity.EntityFireOrb.onUpdate(EntityFireOrb.java:52)

at net.minecraft.world.World.updateEntityWithOptionalForce(World.java:2106)

at net.minecraft.world.WorldServer.updateEntityWithOptionalForce(WorldServer.java:872)

at net.minecraft.world.World.updateEntity(World.java:2073)

at net.minecraft.world.World.updateEntities(World.java:1886)

at net.minecraft.world.WorldServer.updateEntities(WorldServer.java:644)

at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:783)

at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:687)

at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:156)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:536)

at java.lang.Thread.run(Unknown Source)

 

 

A detailed walkthrough of the error, its code path and all known details is as follows:

---------------------------------------------------------------------------------------

 

-- Head --

Thread: Server thread

Stacktrace:

at net.minecraft.world.World.isOutsideBuildHeight(World.java:257)

at net.minecraft.world.World.getBlockState(World.java:905)

at guru.tbe.entity.EntityFireOrb.onImpact(EntityFireOrb.java:98)

at guru.tbe.entity.EntityOrb.onUpdate(EntityOrb.java:223)

at guru.tbe.entity.EntityFireOrb.onUpdate(EntityFireOrb.java:52)

at net.minecraft.world.World.updateEntityWithOptionalForce(World.java:2106)

at net.minecraft.world.WorldServer.updateEntityWithOptionalForce(WorldServer.java:872)

at net.minecraft.world.World.updateEntity(World.java:2073)

 

-- Entity being ticked --

Details:

Entity Type: guru.FireOrb (guru.tbe.entity.EntityFireOrb)

Entity ID: 2829

Entity Name: entity.guru.FireOrb.name

Entity's Exact location: -370.35, 44.78, 483.31

Entity's Block location: World: (-371,44,483), Chunk: (at 13,2,3 in -24,30; contains blocks -384,0,480 to -369,255,495), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)

Entity's Momentum: -0.21, -1.34, -0.74

Entity's Passengers: []

Entity's Vehicle: ~~ERROR~~ NullPointerException: null

Stacktrace:

at net.minecraft.world.World.updateEntities(World.java:1886)

at net.minecraft.world.WorldServer.updateEntities(WorldServer.java:644)

 

-- Affected level --

Details:

Level name: New World

All players: 1 total; [EntityPlayerMP['Player551'/11, l='New World', x=-369.48, y=48.44, z=486.34]]

Chunk stats: ServerChunkCache: 320 Drop: 0

Level seed: -4304635456321882683

Level generator: ID 01 - flat, ver 0. Features enabled: true

Level generator options: 3;minecraft:bedrock,42*minecraft:dirt,minecraft:grass;1;village

Level spawn location: World: (-350,4,459), Chunk: (at 2,0,11 in -22,28; contains blocks -352,0,448 to -337,255,463), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)

Level time: 7142 game time, 7142 day time

Level dimension: 0

Level storage version: 0x04ABD - Anvil

Level weather: Rain time: 87864 (now: false), thunder time: 151512 (now: false)

Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: true

Stacktrace:

at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:783)

at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:687)

at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:156)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:536)

at java.lang.Thread.run(Unknown Source)

 

-- System Details --

Details:

Minecraft Version: 1.10.2

Operating System: Windows Vista (x86) version 6.0

Java Version: 1.8.0_102, Oracle Corporation

Java VM Version: Java HotSpot Client VM (mixed mode), Oracle Corporation

Memory: 668428072 bytes (637 MB) / 1046937600 bytes (998 MB) up to 1046937600 bytes (998 MB)

JVM Flags: 3 total; -Xincgc -Xmx1024M -Xms1024M

IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0

FML: MCP 9.32 Powered by Forge 12.18.1.2046 4 mods loaded, 4 mods active

States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored

UCHIJAAAA mcp{9.19} [Minecraft Coder Pack] (minecraft.jar)

UCHIJAAAA FML{8.0.99.99} [Forge Mod Loader] (forgeSrc-1.10.2-12.18.1.2046.jar)

UCHIJAAAA Forge{12.18.1.2046} [Minecraft Forge] (forgeSrc-1.10.2-12.18.1.2046.jar)

UCHIJAAAA guru{1.53} [The Basic Elements] (bin)

Loaded coremods (and transformers):

GL info: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.

Profiler Position: N/A (disabled)

Player Count: 1 / 8; [EntityPlayerMP['Player551'/11, l='New World', x=-369.48, y=48.44, z=486.34]]

Type: Integrated Server (map_client.txt)

Is Modded: Definitely; Client brand changed to 'fml,forge'

 

[Animefan8888]

Is EntityOrb your class?

[gurujive]

EntityOrb is a rewritten form of EntityThrowable

 

EntityFireOrb Extends EntityOrb

Like Snowball extends EntityThrowable.

 

Both EntityOrb And EntityThrowable extends entity and implements Iprojectile

[Leviathan143]

if (worldObj.getBlockState(null) == Blocks.COAL_BLOCK.getDefaultState()

 

You are literally passing null into a method, so of course you are getting an NPE.

[gurujive]

well I went this way with it too.

 

private int xTile;

private int yTile;

private int zTile;

private BlockPos blockpos;

 

 

 

BlockPos blockpos = new BlockPos(this.xTile, this.yTile, this.zTile);

 

 

 

if (worldObj.getBlockState(blockpos) == Blocks.COAL_BLOCK.getDefaultState())

{

this.worldObj.setBlockState( blockpos, Blocks.FIRE.getDefaultState());

}

 

and i still come up with the same crash report.

[Animefan8888]

does tileX tileY tileZ ever get set to a number?

[gurujive]

hmmm....

 

still crashes.

 

This craps too complicated. I'm going to play some league.

 

public EntityFireOrb(World worldIn, EntityLivingBase throwerIn)
    {
        super(worldIn, throwerIn);
        this.fuse = 140;
        this.xTile = chunkCoordX;
        this.yTile = chunkCoordY;
        this.zTile = chunkCoordZ;
    }

[gurujive]

It should be able to go like this:

 

if (result.blockHit = Blocks.COAL_BLOCK)

{

this.setBlock(posX, posY, posZ);

setBlock = FIRE

}

 

or something like that...

forge is too friggin complicated.

 

like alright... I'd like to set a block on fire with a projectile.

Lemme research that for the next 5 days and possibly fail or succeed at doing it.

(nope, time to play some league)

[Animefan8888]

Chunk coords are completely different that what you are looking for you can grab the position from the MovingObjectPosition.

[Draco18s]

private BlockPos blockpos;

...

BlockPos blockpos = new BlockPos(this.xTile, this.yTile, this.zTile);

 

These two objects are not the same. You should come back when you understand Java because it is clear that you do not know wtf you are doing.

[gurujive]

private BlockPos blockpos;

...

BlockPos blockpos = new BlockPos(this.xTile, this.yTile, this.zTile);

 

These two objects are not the same. You should come back when you understand Java because it is clear that you do not know wtf you are doing.

 

I got a good laugh.

"Because, magic doesn't shoot from a dispenser, that's why!"

 

I smited you just for fun though

[Draco18s]

I got a good laugh.

"Because, magic doesn't shoot from a dispenser, that's why!"

 

But magic doesn't shot from a dispenser.

 

private BlockPos blockpos; //class field
...
BlockPos blockpos = new BlockPos(this.xTile, this.yTile, this.zTile); //local variable

 

Google "local scope"