// Omei Qunhua

integer PrimNum = 1;
integer LastPrim = 99;
integer TimeStarted;

float       fAlpha          =  1.0;
float       fAlphaChange    =  0.05;   // 20 steps to transparent
float       fAlphaSleep     =  0.35;   // 20 steps at 0.35 secs takes 7 seconds

default
{
    state_entry()
    {
        fAlpha = 1.0;
        llSetLinkAlpha  ( 1,fAlpha,ALL_SIDES);
        llSetLinkAlpha  ( 9,fAlpha,ALL_SIDES);
        llSetLinkAlpha  (10,fAlpha,ALL_SIDES);
        llSetLinkAlpha  (11,fAlpha,ALL_SIDES);
        llSetLinkAlpha  (12,fAlpha,ALL_SIDES);
        llSetLinkAlpha  (13,fAlpha,ALL_SIDES);

    }
    touch_start(integer total_number)
    {
        TimeStarted = llGetUnixTime();
        llSetTimerEvent(fAlphaSleep);
        PrimNum = 1;
    }

    timer()
    {
        integer Elapsed = llGetUnixTime() - TimeStarted;
        // On each 5 second boundary after the 7 seconds fade time, switch to next prim
        if (Elapsed == 12)           PrimNum = 9;
        if (Elapsed == 24)          PrimNum = 10;
        if (Elapsed == 36)          PrimNum = 11;
        if (Elapsed == 48)          PrimNum = 12;
        if (Elapsed == 60)          PrimNum = 13;
        if (Elapsed == 72)          llResetScript();

        if (PrimNum != LastPrim)   // On change of Prim Number, reset Alpha
        {
            fAlpha = 1.0;
            LastPrim = PrimNum;
        }
        if (fAlpha < fAlphaChange)    return;       // Don't decrement Alpha below zero, wait for prim Change
        fAlpha -= fAlphaChange;
        llSetLinkAlpha  ( PrimNum,fAlpha,ALL_SIDES);
    }
}