color menu

I have a menu in a linked couch but I only want parts of the couch to change. I used the script to get the linked parts number 1,20,28 but I get lost where to change Link_root to Link_number

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integer CHAN = -172;
list buttons = ["Red", "White", "Blue", "Green"];

default
{
state_entry()
{
llListen(CHAN,"","","";
}

touch_start(integer num)
{
llDialog(llDetectedKey(0),"Choose a texture",buttons,CHAN);
}

listen (integer channel, string name, key id, string message)
{
llSetLinkTexture(LINK_ROOT,message, ALL_SIDES);
}
}

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The first parameter of llSetLinkTexture is the link number. You can use one of the LINK_* flags like LINK_ROOT or an actual link number. BTW LINK_ROOT is the same as providing the number 1 for link number if it's a linkset.

replace

llSetLinkTexture(LINK_ROOT,message, ALL_SIDES);

with

llSetLinkTexture(LINK_ROOT,message, ALL_SIDES);
llSetLinkTexture(20,message, ALL_SIDES);
llSetLinkTexture(28,message, ALL_SIDES);

Or put your link numbers in a list and loop through the list using llSetLinkTexture.

I think I would also suggest not opening a listen that stays open all the time. You can start a timer and turn the listen ON when they touch and off when you receive a response or the timer fires.

Something like the following:

integer CHAN = -172;
list buttons = ["Red", "White", "Blue", "Green"];
integer listen_handle;
key toucher;

default
{
	touch_start(integer total_number)
	{
		if (llDetectedKey(0) != NULL_KEY)
		{
			toucher = llDetectedKey(0);
			llDialog(toucher,"Choose a texture",buttons,CHAN);
			listen_handle = llListen(CHAN,llKey2Name(toucher),toucher,"");
			llSetTimerEvent(30.0);
		}
	}

	listen (integer channel, string name, key id, string message)
	{
		llListenRemove(listen_handle);
		llSetTimerEvent(0.0);
		llSetLinkTexture(LINK_ROOT,message, ALL_SIDES);
		llSetLinkTexture(20,message, ALL_SIDES);
		llSetLinkTexture(28,message, ALL_SIDES);
		
	}

	timer()
	{
		if (toucher != NULL_KEY)
		{
			llInstantMessage(toucher,"Dialog timer expired.");
		}
		llListenRemove(listen_handle);
		llSetTimerEvent(0.0);				
	}