#536 Need Lua function for combat power drain components in spells.

Currently no lua function for power drains that broadcasts to chat and overhead numbers. Possibly add power option to SpellDamage()?

this is called siphon it is already supported (although I am not sure DoF client has been verified)

#define DAMAGE_PACKET_TYPE_SIPHON_SPELL		0x41
#define DAMAGE_PACKET_TYPE_SIPHON_SPELL2	0x49

0x41 = 65 in decimal 0x49 = 73 in decimal

DamageSpawn(Attacker, Victim, 65, ...)

seems our DamageSpawn function is only designed to deal out actual damage though despite the siphon option

        if(damage) {
            int32 prevDmg = damage;
            damage = victim->CheckWards(this, damage, damage_type);

            if (damage < (sint64)prevDmg)
                useWards = true;
            if(damage > 0 && spell) {
                spell->has_damaged = true;
            }
            victim->TakeDamage(damage);

DamageSpawn(NPC, Spawn, 65, 5, 10, 20, "Power Drain", 0, 0, 0, 0, 1) -- last argument 1 is 'take power'

takes 10-20 power away from their target

65 = drain 5 = magic damage