sv_vampire.qc

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#include "sv_vampire.qh"

string autocvar_g_vampire;
float autocvar_g_vampire_factor = 1.0;
bool autocvar_g_vampire_use_total_damage = false;

REGISTER_MUTATOR(vampire, expr_evaluate(autocvar_g_vampire) && !MUTATOR_IS_ENABLED(mutator_instagib));

MUTATOR_HOOKFUNCTION(vampire, PlayerDamage_SplitHealthArmor)
{
    // NOTE: vampire buff PlayerDamage_SplitHealthArmor code is similar
    entity frag_attacker = M_ARGV(1, entity);
    entity frag_target = M_ARGV(2, entity);
    float health_take = bound(0, M_ARGV(4, float), GetResource(frag_target, RES_HEALTH));
    float armor_take = bound(0, M_ARGV(5, float), GetResource(frag_target, RES_ARMOR));
    float damage_take = (autocvar_g_vampire_use_total_damage) ? health_take + armor_take : health_take;

    if (!StatusEffects_active(STATUSEFFECT_SpawnShield, frag_target) && frag_target != frag_attacker
        && IS_PLAYER(frag_attacker) && !IS_DEAD(frag_target) && !STAT(FROZEN, frag_target))
    {
        GiveResource(frag_attacker, RES_HEALTH, autocvar_g_vampire_factor * damage_take);
    }
}

MUTATOR_HOOKFUNCTION(vampire, BuildMutatorsString)
{
    M_ARGV(0, string) = strcat(M_ARGV(0, string), ":Vampire");
}

MUTATOR_HOOKFUNCTION(vampire, BuildMutatorsPrettyString)
{
    M_ARGV(0, string) = strcat(M_ARGV(0, string), ", Vampire");
}