[1.8] [SOLVED] Modifying stack on server side from client side

[SnowyEgret]

Hi. 

 

In my mod I have spells on a staff. Classes Staff and Spell are both items. To select the next spell on the staff, I am modifying the tag on the staff's stack on a key press in the client thread:

 

	@SideOnly(Side.CLIENT)
@SubscribeEvent
public void onKeyInput(KeyInputEvent event) {
	if (keyBindings.get("nextSpell").isPressed()) {
		EntityPlayerSP p = Minecraft.getMinecraft().thePlayer;
		ItemStack stack = p.getCurrentEquippedItem();
		if (stack != null) {
			Item i = stack.getItem();
			if (i instanceof Staff) {
				((Staff) i).nextSpell(stack);
			}
		}
	}
        }

 

Staff.nextSpell() modifies the tag on the stack, setting the index to the current spell. Later when I use the spell, I want to run on the server thread because it is going to modify the world:

 

	@Override
public boolean onItemUse(ItemStack stack, EntityPlayer playerIn, World world, 
		BlockPos pos, EnumFacing side, float hitX, float hitY, float hitZ) {

	System.out.println("tag="+stack.getTagCompound());
	//Only on server side.
	if (world.isRemote) {
		return true;
	}

 

The println shows that index has been updated only the tag in the client thread:

 

[14:31:09] [Client thread/INFO] [sTDOUT]: [ds.plato.item.spell.Spell:onItemUse:97]: tag={3:"SpellLine",2:"SpellCone",index:6,1:"SpellCircle",0:"SpellBox",7:"SpellSeaShell",6:"SpellRectangle",5:"SpellPyramid",4:"SpellMeasure",8:"SpellSphere",}
[14:31:09] [server thread/INFO] [sTDOUT]: [ds.plato.item.spell.Spell:onItemUse:97]: tag={3:"SpellLine",2:"SpellCone",index:0,1:"SpellCircle",0:"SpellBox",7:"SpellSeaShell",6:"SpellRectangle",5:"SpellPyramid",4:"SpellMeasure",8:"SpellSphere",}

 

How can I set the stack in the server thread so that it is in sync with the client thread?

 

[Draco18s]

You need packets.

[SnowyEgret]

Funny, this code was running on 1.7 with no messaging. Not sure how (probably badly). Anyway, works fine now with messaging. Thanks Draco.