path: root/world/map/npc/magic/_procedures.txt

function|script|magic_register
{
    debugmes ">> Register " + .invocation$ + " @ " + strnpcinfo(0);
    set .@ext$, if_then_else(getarg(0,"") != "", "::"+getarg(0), "");
    registercmd .invocation$, strnpcinfo(0) + .@ext$; // register the spell
    set .index, $@magic_index;
    set $@magic_index, $@magic_index + 1;
    return;
}

// this function is call()-only
function|script|magic_checks
{
    set .@r, 0;
    if(getpvpflag(1)) set .@r, 1;
    if((gettimetick(2) - MAGIC_CAST_TICK) < 0) set .@r, 2; // check if last debuff ended
    if(Hp < 1) set .@r, 3; // can not cast when dead
    return .@r;
}

function|script|elt_damage
{
    // args are damage, dmgplus(mutation), bonus_elt, malus_elt, effect
    set .@dmg, getarg(0) + rand(getarg(1));
    if(elttype(@target_id) == getarg(3)) // malus
        set .@dmg, .@dmg / 3;
    if(elttype(@target_id) == getarg(2)) // bonus
        set .@dmg, ((eltlvl(@target_id) + 4) * .@dmg) / 4;
    set .@source, .caster;
    if (!.@source) set .@source, getcharid(3);

    injure .@source, @target_id, .@dmg;
    misceffect getarg(4), @target_id;
    return;
}

function|script|melee_damage
{
    // args are spell power, target id, dmg
    if ((getarg(0) - rand(100)) < (get(BaseLevel, getarg(1)) + get(MDEF1, getarg(1))))
        injure BL_ID, getarg(1), 0;
    else injure BL_ID, getarg(1), getarg(2);
    return;
}

function|script|magic_create_item
{
    set .@exp, (MAGIC_EXPERIENCE & (BYTE_0_MASK | BYTE_1_MASK)) >> BYTE_0_SHIFT;
    set .@score, (.@exp + rand(min(@spellpower, ((.@exp / 3) + 1))));
    set @create_params[2], 1; // success flag
    if (.@score >= @create_params[1]) goto L_Perfect;
    set @create_params[2], 0; // success flag
    set .@score, .@score + rand(Luk) + rand(Luk);
    if (.@score < (@create_params[1] / 3)) goto L_Backfire;
    if (.@score < ((@create_params[1] * 2) / 3)) goto L_Iten;
    message strcharinfo(0), "Magic : ##3##BYour spell takes on a mind of its own!";
    if (rand(3) == 1) getitem @create_items$[1], 1; // bad item
    return;

L_Iten:
    if (rand(5) != 2) goto L_Escape;
    message strcharinfo(0), "Magic : ##3##BYour spell solidifies into the shape of a mysterious object!";
    getitem "Iten", 1;
    return;

L_Escape:
    message strcharinfo(0), "Magic : ##3##BYour spell escapes!";
    return;

L_Backfire:
    message strcharinfo(0), "Magic : ##3##BYour spell backfires!";
    if (rand(110) < Luk) heal 0 - ((BaseLevel+1)*(BaseLevel+2)*(rand(28)+3)), 0;
    else                 heal 0 - (BaseLevel + 1), 0;
    return;

L_Perfect:
    getitem @create_items$[0], @create_params[0]; // good item
    return;
}

function|script|magic_exp
{
    set @last_index, (MAGIC_EXPERIENCE & BYTE_2_MASK) >> BYTE_2_SHIFT;
    set @last_exp, (MAGIC_EXPERIENCE & (BYTE_0_MASK | BYTE_1_MASK)) >> BYTE_0_SHIFT;

    debugmes "old spell index: " + @last_index;
    debugmes "new spell index: " + .index;

    if(getskilllv(SKILL_MAGIC) < (.level + 3) && .index != @last_index)
        goto L_Gain;
    debugmes "same as last spell => don't proceed";
    goto L_Return;

L_Gain:
    if(.exp_gain < 1) goto L_Return; // only the spells that have exp register here. If you
    //                                 remove this line then players can cast a spell with
    //                                 no cost, then a spell with a reagents, then another
    //                                 spell with no costs and still get the exp
    set @new_exp, @last_exp + .exp_gain;
    if(@new_exp > (BYTE_0_MASK | BYTE_1_MASK)) set @new_exp, (BYTE_0_MASK | BYTE_1_MASK);
    debugmes "old magic exp: "+ @last_exp;
    debugmes "new magic exp: "+ @new_exp;
    set MAGIC_EXPERIENCE, (MAGIC_EXPERIENCE &~ (BYTE_0_MASK | BYTE_1_MASK)) | (@new_exp << BYTE_0_SHIFT);
    set MAGIC_EXPERIENCE, (MAGIC_EXPERIENCE &~ BYTE_2_MASK) | (.index << BYTE_2_SHIFT);
    goto L_Return;

L_Return:
    return;
}

function|script|adjust_spellpower
{
    set @spellpower, MATK1 + getskilllv(SKILL_MAGIC) + getskilllv(.school) + 10;
    if((.school != SKILL_MAGIC_NATURE) && (.school != SKILL_MAGIC_LIFE)) goto L_Return;
    if(@args$ == "" || !@args$ || getpartnerid2() == 0) goto L_Return;
    if(getcharid(3, @args$) < 1 || getpartnerid2() != getcharid(3, @args$) || !(isloggedin(getcharid(3, @args$))))
        goto L_Return;
    debugmes "You targeted your spouse!";
    // XXX: I need a builtin to check if the target is in range of the caster
    // XXX: the spell power increases when the target is the spouse so one could
    //      just do #modrilax (spouse) right?
    //
    // ... let's just forget about spouse for now
    goto L_Return;

L_Return:
    return;
}

function|script|gain_heal_xp
{
    set @last_heal_xp, ((SCRIPT_XP & SCRIPT_HEALSPELL_MASK) >>  SCRIPT_HEALSPELL_SHIFT);
    if ((@target_id != BL_ID) && ((.@heal_value / .heal_xp_value_divisor) > (((10 + @last_heal_xp) + rand(@last_heal_xp + 1)) + rand(@last_heal_xp + 1))))
        goto L_Block;
    goto L_Return;

L_Block:
    set @heal_xp, (@last_heal_xp + @mexp);
    if (@heal_xp > SCRIPT_HEALSPELL_MASK)
        set @heal_xp, SCRIPT_HEALSPELL_MASK;
    set XMASTIME, (XMASTIME & ~(NIBBLE_0_MASK) | (@xmas_state << NIBBLE_0_SHIFT));
    set SCRIPT_XP, (SCRIPT_XP & ~(SCRIPT_HEALSPELL_MASK) | (@heal_xp << SCRIPT_HEALSPELL_SHIFT));
    goto L_Gain_Xp;

L_Gain_Xp:
    set @target_heal_xp, (get(MaxHp, @target_id) - get(HEALXP, @target_id));
    set @heal_exp, .@heal_value; 
    if (@target_heal_xp < .@heal_value)
        set @heal_exp, @target_heal_xp; 
    getexp (.base_exp_factor * @heal_exp), 0;
    set HEALXP, (get(HEALXP, @target_id) + @heal_exp), @target_id;
    goto L_Return;

L_Return:
    return;
}