For the mod I'm making, I need to save the players dimension and coordinates when they do a certain thing. I then want to be able to get that data when the player types in a command so that they can teleport to that location. I thing I need to do something with IAdditionalEntityData or something but I'm not sure. please help. Oh! and I also have the command set up already. I just don't know how to make it teleport the player. https://github.com/code-lyoko-modding/CodeLyokoMod/blob/master/matt/lyoko/handlers/CommandHandler.java

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I don't know how to use IAdditionalEntityData... but teleporting a player is player.setLocationAndAngles(x,y,z,yaw,pitch). I use 90 and 0 for the last two arguments; that works well enough.

But I only have access to ICommandSender

But I only have access to ICommandSender

When exactly is this that you want to teleport the player?

when they type a command.

if(icommandsender instanceof EntityPlayer){
((EntityPlayer) icommandsender).setLocationAndAngles(x,y,z,yaw,pitch);
}

... why did I not think of that. On to the second problem, how do I save the location of the player at a certain point in time and then retrieve it later on? if needed, I can save it to a file and then read it from there, but I'd prefer to save it to NBT data.

I don't know how to use IAdditionalEntityData... but teleporting a player is player.setLocationAndAngles(x,y,z,yaw,pitch). I use 90 and 0 for the last two arguments; that works well enough.

Instead of just using 90 and 0, you can use the actual yaw and pitch.

player.setLocationAndAngles(x, y, z, player.rotationYaw, player.rotationPitch);

I'm aware of how to teleport once in the player class, I've done it before, I just need to get a way to save data to the player.

I don't know how to use IAdditionalEntityData... but teleporting a player is player.setLocationAndAngles(x,y,z,yaw,pitch). I use 90 and 0 for the last two arguments; that works well enough.

Instead of just using 90 and 0, you can use the actual yaw and pitch.

player.setLocationAndAngles(x, y, z, player.rotationYaw, player.rotationPitch);

Good point, not that I'm sure it matters.

You can also do player.setLocationAndUpdate(x, y, z) and it automatically uses the players yaw and pitch.

I still need help saving and recalling the players coordinates and dimension when ever I need to.