RG Live WotLK 3.3.5a

// This enumeration helps to create a spell script for all three anti-venoms of the First Aid profession.

enum AntiVenomSpellIDs

{

    SPELL_ANTI_VENOM          = 7932,

    SPELL_STRONG_ANTI_VENOM   = 7933,

    SPELL_POWERFUL_ANTI_VENOM = 23786

};

// Item:  6452 - Anti-Venom          | Spell: 7932 - Anti-Venom

// Item:  6453 - Strong Anti-Venom   | Spell: 7933 - Strong Anti-Venom

// Item: 19440 - Powerful Anti-Venom | Spell: 23786 - Powerful Anti-Venom

class spell_item_anti_venom : public SpellScript

{

    PrepareSpellScript(spell_item_anti_venom);

    // Only load spell script if the Anti-Venom spell is used by an existing player.

    bool Load() override

    {

        return GetCaster() && GetCaster()->GetTypeId() == TYPEID_PLAYER;

    }

    /*

    Check if target is affected by poisons.

    - If yes, HandleDummy() will be executed, handling the removal of poisons.

    - If not, error message "Nothing to dispel" will be shown.

    */

    SpellCastResult CheckForPoison()

    {

        Unit* t = GetExplTargetUnit();

        if (!t)

            t = GetCaster();

        bool b = false;

        uint32 maxSLevel;

        switch (GetSpellInfo()->Id)

        {

            case SPELL_ANTI_VENOM:

                maxSLevel = 25;

                break;

            case SPELL_STRONG_ANTI_VENOM:

                maxSLevel = 35;

                break;

            case SPELL_POWERFUL_ANTI_VENOM:

                maxSLevel = 60;

                break;

			default: // should not happen. fail save.

				maxSLevel = 0;

				break;

        }

        // Iterate through all auras of the player.

		for (auto itr = t->GetOwnedAuras().begin(); itr != t->GetOwnedAuras().end(); ++itr)

        {

            // Second contained item is the actual spell behind the aura.

            Aura* aura = itr->second;

            // dMask: dispel mask | sLevel: spell level

            uint32 dMask = aura->GetSpellInfo()->GetDispelMask();

            uint32 sLevel = aura->GetSpellInfo()->SpellLevel;

            /* If the aura

            - is removable by effects dispeling poisons and

            - the spell level is less or equal to the maximum spell level of the poison debuff the anti venom can cure, then ...

            */

			if (dMask == (1 << DISPEL_POISON) && sLevel <= maxSLevel)

                b = true; // ... remember it for later.

        }

        // If no poison debuff aura was found...

		if (!b)

            return SPELL_FAILED_NOTHING_TO_DISPEL; // ... return with error message: "Nothing to dispel."

        else

            return SPELL_CAST_OK; // ... else, all good. Continue to handle the spell effect with HandleDummy().

    }

    /*

    The method handling the effect.

    - Determines the target the Anti-Venom will be used on.

    - Removes all poisons on the target up to the designated spell level.

    */

    void HandleDummy(SpellEffIndex /*effIndex*/)

    {

        // p: Player using the Anti-Venom. | t: Target the Anti-Venom is used on.

        Unit* p = GetCaster();

        Unit* t = GetExplTargetUnit();

        // maxSLevel: maximum spell level of the poison debuff the anti venom can cure

        uint32 maxSLevel;

        // Anti-Venom used with no target. Set target t to the caster, to use the Anti-Venom on himself.

        if (!t)

            t = GetCaster();

        /*

        set maxSLevel according to the anti venom used.

        Anti-Venom          : up to spell level 25.

        Strong Anti-Venom   : up to spell level 35.

        Powerful Anti-Venom : up to spell level 60.

        */

        switch (GetSpellInfo()->Id)

        {

        case SPELL_ANTI_VENOM:

            maxSLevel = 25;

            break;

        case SPELL_STRONG_ANTI_VENOM:

            maxSLevel = 35;

            break;

        case SPELL_POWERFUL_ANTI_VENOM:

            maxSLevel = 60;

            break;

        default: // should not happen. fail save.

            maxSLevel = 0;

            break;

        }

        // Iterate through all auras of the player.

        for (auto itr = t->GetOwnedAuras().begin(); itr != t->GetOwnedAuras().end(); ++itr)

        {

            // Second contained item is the actual spell behind the aura.

            Aura* aura = itr->second;

            // dMask: dispel mask of the aura | sLevel: spell level of the aura

            uint32 dMask = aura->GetSpellInfo()->GetDispelMask();

            uint32 sLevel = aura->GetSpellInfo()->SpellLevel;

            /* If the aura

            - is removable by effects dispeling poisons and

            - the spell level is less or equal to the maximum spell level of the poison debuff the anti venom can cure, then ...

            */

            if (dMask == (1 << DISPEL_POISON) && sLevel <= maxSLevel)

                t->RemoveAura(aura, AURA_REMOVE_BY_DEFAULT); // ... remove the poison aura.

        }

    }

    void Register() override

    {

        OnCheckCast += SpellCheckCastFn(spell_item_anti_venom::CheckForPoison);

        OnEffectHit += SpellEffectFn(spell_item_anti_venom::HandleDummy, EFFECT_0, SPELL_EFFECT_DUMMY);

    }

};

void AddSC_item_spell_scripts()

{

	RegisterSpellScript(spell_item_anti_venom);

}