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path: root/world/map/npc/magic/event-boss-powerup-manadrain.txt
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-|script|powerup-manadrain|32767
{
    end;

OnCast:
    message strcharinfo(0), "[boss-manadrain] : -> OnCast";
    if(call("boss_powerup_checks")) end;
    message strcharinfo(0), "[boss-manadrain] : after boss powerup check";
    if (getmapflag(getmap(), MF_TOWN)) goto L_Fail_town;
    message strcharinfo(0), "[boss-manadrain] : after mapflags check";
    message strcharinfo(0), "[boss-manadrain] : HP="+get(Hp, BL_ID);
//  TBD who can use this.
    set @_M_BLOCK, 1; // block casting, until the timer clears it
    addtimer 10000, "Magic Timer::OnClear"; // set the new debuff
    sc_start SC_COOLDOWN, 10000, 0, BL_ID;
    misceffect FX_BLUE_MAGIC_CAST, strcharinfo(0);
    set @dist, 16;
    foreach 0, getmap(), (POS_X - @dist), (POS_Y - @dist), (POS_X + @dist), (POS_Y + @dist), strnpcinfo(0) + "::OnHit";
    message strcharinfo(0), "[boss-manadrain] : after foreach";
    message strcharinfo(0), "[boss-manadrain] : HP="+get(Hp, BL_ID);
    message strcharinfo(0), "[boss-manadrain] : <- OnCast";
    end;

OnHit:
    if (@target_id == BL_ID) end;               // Do not drain caster
    if ((get(Hp, @target_id)) < 1) end;         // Do not touch dead
    set @targetmp, get(Sp, @target_id);         // Get MP of victim
    if (@targetmp > 0) goto L_cont;
    set @targetmp, 0;
    end;                                        // Do not drain dead!
L_cont:
    set @hpgain, min((@targetmp * 2 ), 900);    // Clamp in case of weird setups.
    message strcharinfo(0, @target_id), "[boss-manadrain] : "+strcharinfo(0, BL_ID)+" drains all your mana!";
    misceffect FX_CHANNELLING_RAISE, strcharinfo(0, @target_id);
    set Sp, 1, @target_id;                      // Drain victim
    set Hp, (Hp + @hpgain), BL_ID;              // Heal caster by computed amount
    set @hpgain, 0;
    set @targetmp, 0;
    end;

L_Fail_town:
    message strcharinfo(0), "[boss-manadrain] : aura of this place doesn't lets you drain mana!";
    end;

OnInit:
    set .school, SKILL_MAGIC;
    set .invocation$, chr(MAGIC_SYMBOL) + "mapmanadrain"; // used in npcs that refer to this spell
    void call("magic_register", "OnCast");
    set .level, 0;
    set .exp_gain, 0;
    end;
}