[1.10.2] Change ground to Ice after entity hit by entity NullPoint error ...~

[terraya]

Hello@All ..

 

everything works fine ... if i want to throw and entity on the other entity and make it explode .. it work perfectly ...

 

but if i want to hit an entity with another entity AND change the ground to ICE it wont work ... i get an error ..

 

hopefully someone can help me

 

EntityClass:

 

public class IceBall extends EntityThrowable
{
  public IceBall(World par1World)
  {
    super(par1World);
  }
  
  public IceBall(World par1World, EntityPlayer par3EntityPlayer)
  {
    super(par1World, par3EntityPlayer);
  }
  
  public IceBall(World par1World, double par2, double par4, double par6)
  {
    super(par1World, par2, par4, par6);
  }
  
  public int explosionRadius = 5;
  public int ticks = 300;
  
  public void onEntityUpdate()
  {
    if (this.ticks <= 0)
    {
      this.ticks = 300;
      setDead();
    }
    else
    {
      this.ticks -= 1;
    }
  }

  public int quantityDropped(Random random)
  {
      return 0; //Returns 0 item drop on destruction
  }

  public void changeToIce(BlockPos location, int radius) {
	for (int x = location.getX() - radius; x <= location.getX() + radius; x++) {
		for (int y = location.getY() - radius; y <= location.getY() + radius; y++) {
			for (int z = location.getZ() - radius; z <= location.getZ() + radius; z++) {
				BlockPos pos = new BlockPos(x, y, z);
				if (pos.distanceSq(location) <= radius) {
					IBlockState blockState = worldObj.getBlockState(pos);
					if (blockState != Blocks.AIR
							.getDefaultState()) {
						worldObj.setBlockState(pos, CustomBlocks.IceBlock1.getDefaultState());
					}
				}
			}
		}
	}
}
  
  @Override
protected void onImpact(RayTraceResult result)

{
    if (result.entityHit != null)
    {
        int i = 0;
        if (result.entityHit instanceof EntityLivingBase)
        {
            i = 150;
        }
        result.entityHit.attackEntityFrom(DamageSource.causeThrownDamage(this, this.getThrower()), (float)i);
        worldObj.playSound((EntityPlayer)null, posX, posY, posZ, SoundEvents.BLOCK_GRASS_BREAK, SoundCategory.NEUTRAL, 0.8F, 1.5F / (worldObj.rand.nextFloat() * 0.4F + 0.8F));
    }
    for (int j = 0; j < 8; ++j)
    {
    	  this.worldObj.createExplosion(this, this.posX, this.posY, this.posZ, this.explosionRadius, true);
	        changeToIce(result.getBlockPos(), 100);
    }
    if (!this.worldObj.isRemote)
    {
        this.setDead();
        worldObj.playSound((EntityPlayer)null, posX, posY, posZ, SoundEvents.BLOCK_GRASS_BREAK, SoundCategory.NEUTRAL, 0.7F, 1.5F / (worldObj.rand.nextFloat() * 0.4F + 0.8F));
    }		
}
  
protected float getGravityVelocity() {
	return 0.001F;
}
}

 

ErrorLog:

---- Minecraft Crash Report ----
// Quite honestly, I wouldn't worry myself about that.

Time: 17.11.16 00:40
Description: Ticking entity

java.lang.Error: Unresolved compilation problem: 
The type IceBall must implement the inherited abstract method EntityThrowable.onImpact(RayTraceResult)

at DevilFruitSkills.IceBall.onImpact(IceBall.java:22)
at net.minecraft.entity.projectile.EntityThrowable.onUpdate(EntityThrowable.java:266)
at net.minecraft.world.World.updateEntityWithOptionalForce(World.java:2108)
at net.minecraft.world.WorldServer.updateEntityWithOptionalForce(WorldServer.java:873)
at net.minecraft.world.World.updateEntity(World.java:2075)
at net.minecraft.world.World.updateEntities(World.java:1888)
at net.minecraft.world.WorldServer.updateEntities(WorldServer.java:645)
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)

[Choonster]

Are you sure you posted the right crash report? The one you posted is an unresolved compilation problem, not a

NullPointerException

.

[terraya]

Are you sure you posted the right crash report? The one you posted is an unresolved compilation problem, not a

NullPointerException

.

 

 

im sorry, heres the right one:

---- Minecraft Crash Report ----
// But it works on my machine.

Time: 17.11.16 00:52
Description: Ticking entity

java.lang.NullPointerException: Ticking entity
at DevilFruitSkills.IceBall.changeToIce(IceBall.java:61)
at DevilFruitSkills.IceBall.onImpact(IceBall.java:94)
at net.minecraft.entity.projectile.EntityThrowable.onUpdate(EntityThrowable.java:266)
at net.minecraft.world.World.updateEntityWithOptionalForce(World.java:2108)
at net.minecraft.world.WorldServer.updateEntityWithOptionalForce(WorldServer.java:873)
at net.minecraft.world.World.updateEntity(World.java:2075)
at net.minecraft.world.World.updateEntities(World.java:1888)
at net.minecraft.world.WorldServer.updateEntities(WorldServer.java:645)
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)

[Choonster]

A

NullPointerException

is thrown when you try to access a field or call a method of a

null

value.

 

Look at line 61 of

IceBall

, which values could be

null

?

 

If you're not sure which one is

null

, set a breakpoint on that line and run Minecraft in debug mode. When the breakpoint is hit, look at the values used on line 61 and see which one is

null

.

[terraya]

A

NullPointerException

is thrown when you try to access a field or call a method of a

null

value.

 

Look at line 61 of

IceBall

, which values could be

null

?

 

If you're not sure which one is

null

, set a breakpoint on that line and run Minecraft in debug mode. When the breakpoint is hit, look at the values used on line 61 and see which one is

null

.

 

i will give my best