[1.10.2][SOLVED] Teleport to the players spawn point

[MCrafterzz]

I want players to teleport to there spawn point this is the code I've use (it crashes with a null Point exception):

 

@Override

public void onEntityCollidedWithBlock(World worldIn, BlockPos pos, IBlockState state, Entity entityIn) {

if (entityIn instanceof EntityLivingBase) {

EntityPlayer player = (EntityPlayer) entityIn;

entityIn.setPosition(player.getBedSpawnLocation(worldIn, player.getBedLocation(), false).getX(),

player.getBedSpawnLocation(worldIn, player.getBedLocation(), false).getY(),

player.getBedSpawnLocation(worldIn, player.getBedLocation(), false).getZ());

entityIn.playSound(SoundEvents.ENTITY_ENDERPEARL_THROW, 0.5f, 0.5f);

worldIn.spawnParticle(EnumParticleTypes.PORTAL, entityIn.getPosition().getX(),

entityIn.getPosition().getY(), entityIn.getPosition().getZ(), 0, 0, 10, 0);

}

}

[Animefan8888]

You create an instance of EntityPlayer, but you check if the Entity is an instanceof EntityLivingBase...

[MCrafterzz]

Updated code:

@Override

public void onEntityCollidedWithBlock(World worldIn, BlockPos pos, IBlockState state, Entity entityIn) {

if (entityIn instanceof EntityLivingBase) {

if (entityIn instanceof EntityPlayer) {

EntityPlayer player = (EntityPlayer) entityIn;

BlockPos spawnPosition = player.getBedLocation();

entityIn.setPosition(spawnPosition.getX(), spawnPosition.getY(), spawnPosition.getZ());

entityIn.playSound(SoundEvents.ENTITY_ENDERPEARL_THROW, 0.5f, 0.5f);

worldIn.spawnParticle(EnumParticleTypes.PORTAL, entityIn.getPosition().getX(),

entityIn.getPosition().getY(), entityIn.getPosition().getZ(), 0, 0, 10, 0);

} else {

entityIn.setPosition(worldIn.getSpawnPoint().getX(), worldIn.getSpawnPoint().getY(),

worldIn.getSpawnPoint().getZ());

}

}

}

[Ernio]

You create an instance of EntityPlayer, but you check if the Entity is an instanceof EntityLivingBase...

 

While this is true it wouldn't produce NPE, but CCE.

 

Question is - what is null there? My bet is on #getBedSpawnLocation. Also - this method might be called on both sides - it is worth checking that and place proper server side-check if that is a case (maybe its null on client and present on server and client is crashing?).

 

If you can't figure it out - please say at which line it crashes.

[MCrafterzz]

With the updated code that I just posted it no longer crashes. It teleports to a location that I think is right(?) for a fraction of a seconds but then it teleports back

[MCrafterzz]

Changed to:

@Override

@SideOnly(Side.SERVER)

public void onEntityCollidedWithBlock(World worldIn, BlockPos pos, IBlockState state, Entity entityIn) {

if (entityIn instanceof EntityLivingBase) {

if (entityIn instanceof EntityPlayer) {

EntityPlayer player = (EntityPlayer) entityIn;

BlockPos spawnPosition = player.getBedLocation();

entityIn.setPosition(spawnPosition.getX(), spawnPosition.getY(), spawnPosition.getZ());

entityIn.playSound(SoundEvents.ENTITY_ENDERPEARL_THROW, 0.5f, 0.5f);

worldIn.spawnParticle(EnumParticleTypes.PORTAL, entityIn.getPosition().getX(),

entityIn.getPosition().getY(), entityIn.getPosition().getZ(), 0, 0, 10, 0);

} else {

entityIn.setPosition(worldIn.getSpawnPoint().getX(), worldIn.getSpawnPoint().getY(),

worldIn.getSpawnPoint().getZ());

}

}

}

[Animefan8888]

Don't use ASideOnly(SIde.SERVER)

use !world.isRemote

[MCrafterzz]

Done, I will now take a look at the teleport command

[MCrafterzz]

I guess this is the code that I need to look at:

http://pastebin.com/ySKJqdyV

 

But nearly nothing have real names so it's hard to understand what it's accually doing

[MCrafterzz]

Why can't I use:

entityIn.setPosition

 

Why does it even excist if it doesn't work?

[Animefan8888]

• Why not to use @SideOnly
  
• Sides in Minecraft
  

• check

  CommandTeleport

  for how to properly teleport things.

What if this code is going to be run in a SinglePlayer world wouldn't it crash because the method doesn't exist

[Animefan8888]

Are you talking about in the case of

@SideOnly

?

If so: no, because the method is never directly referred to, Minecraft only refers to the overridden method (the one in Block). It would simply not work in SinglePlayer.

If not: Please clarify.

Well you were correct so it won't crash, but it won't work. That just changes the reason to not use it. Unless the OP wants it to only work on a dedicated server.

[MCrafterzz]

So how should I do it then?

[MCrafterzz]

This is how the codes looks like now:

@Override

public void onEntityCollidedWithBlock(World worldIn, BlockPos pos, IBlockState state, Entity entityIn) {

if (!worldIn.isRemote) {

if (entityIn instanceof EntityLivingBase) {

if (entityIn instanceof EntityPlayer) {

EntityPlayer player = (EntityPlayer) entityIn;

BlockPos spawnPosition = player.getBedLocation();

entityIn.setPosition(spawnPosition.getX(), spawnPosition.getY(), spawnPosition.getZ());

entityIn.playSound(SoundEvents.ENTITY_ENDERPEARL_THROW, 0.5f, 0.5f);

worldIn.spawnParticle(EnumParticleTypes.PORTAL, entityIn.getPosition().getX(),

entityIn.getPosition().getY(), entityIn.getPosition().getZ(), 0, 0, 10, 0);

} else {

entityIn.setPosition(worldIn.getSpawnPoint().getX(), worldIn.getSpawnPoint().getY(),

worldIn.getSpawnPoint().getZ());

entityIn.playSound(SoundEvents.ENTITY_ENDERPEARL_THROW, 0.5f, 0.5f);

worldIn.spawnParticle(EnumParticleTypes.PORTAL, entityIn.getPosition().getX(),

entityIn.getPosition().getY(), entityIn.getPosition().getZ(), 0, 0, 10, 0);

}

}

}

}

[Animefan8888]

Yes,

@SideOnly

should not be used (unless you really know what you are doing). Which is why I linked both an article called "Why not to use

@SideOnly

" and a tutorial about the concept of sides in Minecraft.

Yes I understood what they do, but once I get some sleep and my brain is working "better" than it is currently I will read all of what you posted to understand it better. Thank you again diesieben.

 

This is how the codes looks like now:

@Override
public void onEntityCollidedWithBlock(World worldIn, BlockPos pos, IBlockState state, Entity entityIn) {
	if (!worldIn.isRemote) {
		if (entityIn instanceof EntityLivingBase) {
			if (entityIn instanceof EntityPlayer) {
				EntityPlayer player = (EntityPlayer) entityIn;
				BlockPos spawnPosition = player.getBedLocation();
				entityIn.setPosition(spawnPosition.getX(), spawnPosition.getY(), spawnPosition.getZ());
				entityIn.playSound(SoundEvents.ENTITY_ENDERPEARL_THROW, 0.5f, 0.5f);
				worldIn.spawnParticle(EnumParticleTypes.PORTAL, entityIn.getPosition().getX(),
						entityIn.getPosition().getY(), entityIn.getPosition().getZ(), 0, 0, 10, 0);
			} else {
				entityIn.setPosition(worldIn.getSpawnPoint().getX(), worldIn.getSpawnPoint().getY(),
						worldIn.getSpawnPoint().getZ());
				entityIn.playSound(SoundEvents.ENTITY_ENDERPEARL_THROW, 0.5f, 0.5f);
				worldIn.spawnParticle(EnumParticleTypes.PORTAL, entityIn.getPosition().getX(),
						entityIn.getPosition().getY(), entityIn.getPosition().getZ(), 0, 0, 10, 0);
			}
		}
	}
}

Can I assume it is still not working? Also if your code for the TeleportCommand is not "readable" then you should update forge to its most recent version and see if it is readable then.

[MCrafterzz]

Still looks the same with the latest forge version, http://www.minecraftforge.net/forum/Smileys/default/sad.gif

[MCrafterzz]

I have removed one of the instanceof checks:

@Override

public void onEntityCollidedWithBlock(World worldIn, BlockPos pos, IBlockState state, Entity entityIn) {

if (!worldIn.isRemote) {

if (entityIn instanceof EntityPlayer) {

EntityPlayer player = (EntityPlayer) entityIn;

BlockPos spawnPosition = player.getBedLocation();

entityIn.setPosition(spawnPosition.getX(), spawnPosition.getY(), spawnPosition.getZ());

entityIn.playSound(SoundEvents.ENTITY_ENDERPEARL_THROW, 0.5f, 0.5f);

worldIn.spawnParticle(EnumParticleTypes.PORTAL, entityIn.getPosition().getX(),

entityIn.getPosition().getY(), entityIn.getPosition().getZ(), 0, 0, 10, 0);

} else {

entityIn.setPosition(worldIn.getSpawnPoint().getX(), worldIn.getSpawnPoint().getY(),

worldIn.getSpawnPoint().getZ());

entityIn.playSound(SoundEvents.ENTITY_ENDERPEARL_THROW, 0.5f, 0.5f);

worldIn.spawnParticle(EnumParticleTypes.PORTAL, entityIn.getPosition().getX(),

entityIn.getPosition().getY(), entityIn.getPosition().getZ(), 0, 0, 10, 0);

}

}

}

 

But I still don't know how to use the commandteleport code

[Animefan8888]

So what is happening when this code is triggered?

[MCrafterzz]

It crashes because of a null point exception. Crash:

http://pastebin.com/H05XxPqj

[Animefan8888]

Could you post your whole block class or tell me what line 32 is in that class.

[MCrafterzz]

Changed it to this:

@Override

public void onEntityCollidedWithBlock(World worldIn, BlockPos pos, IBlockState state, Entity entityIn) {

if (!worldIn.isRemote) {

if (entityIn instanceof EntityPlayer) {

EntityPlayer player = (EntityPlayer) entityIn;

BlockPos spawnPosition = player.getBedLocation();

((EntityPlayerMP) entityIn).connection.setPlayerLocation(spawnPosition.getX(), spawnPosition.getY(),

spawnPosition.getZ(), player.getRotationYawHead(), player.getRotationYawHead());

entityIn.playSound(SoundEvents.ENTITY_ENDERPEARL_THROW, 0.5f, 0.5f);

worldIn.spawnParticle(EnumParticleTypes.PORTAL, entityIn.getPosition().getX(),

entityIn.getPosition().getY(), entityIn.getPosition().getZ(), 0, 0, 10, 0);

} else {

((EntityPlayerMP) entityIn).connection.setPlayerLocation(worldIn.getSpawnPoint().getX(),

worldIn.getSpawnPoint().getY(), worldIn.getSpawnPoint().getZ(), entityIn.getRotationYawHead(),

entityIn.getRotationYawHead());

entityIn.playSound(SoundEvents.ENTITY_ENDERPEARL_THROW, 0.5f, 0.5f);

worldIn.spawnParticle(EnumParticleTypes.PORTAL, entityIn.getPosition().getX(),

entityIn.getPosition().getY(), entityIn.getPosition().getZ(), 0, 0, 10, 0);

}

}

}

 

Testing now

[MCrafterzz]

New error:

http://pastebin.com/TTrPzcdC

 

Line 39(errored line):

((EntityPlayerMP) entityIn).connection.setPlayerLocation(worldIn.getSpawnPoint().getX(),

worldIn.getSpawnPoint().getY(), worldIn.getSpawnPoint().getZ(), entityIn.getRotationYawHead(),

entityIn.getRotationYawHead());

[Animefan8888]

Why are you casting the entity to an EntityPlayer if it is not an instanceof EntityPlayer

((EntityPlayerMP) entityIn).connection.setPlayerLocation(worldIn.getSpawnPoint().getX(),
                  worldIn.getSpawnPoint().getY(), worldIn.getSpawnPoint().getZ(), entityIn.getRotationYawHead(),
                  entityIn.getRotationYawHead());
            entityIn.playSound(SoundEvents.ENTITY_ENDERPEARL_THROW, 0.5f, 0.5f);
            worldIn.spawnParticle(EnumParticleTypes.PORTAL, entityIn.getPosition().getX(),
                  entityIn.getPosition().getY(), entityIn.getPosition().getZ(), 0, 0, 10, 0);
         }

[MCrafterzz]

Because that's how the teleport command works. I still don't know how I should teleport things. I want players to teleport to there spawn point(in the same dimension) and item and other entities to teleport to the worlds spawn (in the same dimension)

[Animefan8888]

So the way you have it set for the player will work however as far as I can tell onEntityCollidedWithBlock doesn't get called for Item Entities.