(a resource for nwn2 builders)

The following samples for creating visual effects through scripting are from the NWN1 Lexicon. (Currently the lexicon is at http://nwn1.nwn2lexicon.com/, but I'm unsure what's in store for that site.)

// Sample code for applying a VFX_IMP_ visual, a AC-bonus
// (Mage armor) visual, to a target.
void main()
{
    // This is the Object to apply the effect to.
    object oTarget = OBJECT_SELF;

    // Create the visual portion of the effect.
    effect eVis = EffectVisualEffect(VFX_IMP_AC_BONUS);

    // Apply the visual effect to the target.
    // - We apply VFX_IMP_ constants instantly, to a target.
    ApplyEffectToObject(DURATION_TYPE_INSTANT, eVis, oTarget);
}

// Sample code for applying a VFX_DUR_ visual, a 
// stoneskin visual, to a target.
void main()
{
    // This is the Object to apply the effect to.
    object oTarget = OBJECT_SELF;

    // Create the visual portion of the effect
    effect eDur = EffectVisualEffect(VFX_DUR_PROT_STONESKIN);

    // Apply the visual effect to the target.
    // - We apply VFX_DUR_ constants for a duration, here 
    //    it is permanent (could be temporary), to a target.
    ApplyEffectToObject(DURATION_TYPE_PERMANENT, eDur, oTarget);
}

// Sample code for applying a VFX_FNF_ visual, a fireball, 
// to a location.
void main()
{
    // This is the Target to apply the effect at.
    location lTarget = GetLocation(OBJECT_SELF);

    // Create the visual portion of the effect
    effect eAOE = EffectVisualEffect(VFX_FNF_FIREBALL);

    // Apply the visual effect to the target.
    // - We apply VFX_FNF_ constants instantly, and only
    //   at a location.
    ApplyEffectAtLocation(DURATION_TYPE_INSTANT, eAOE, lTarget);
}