// Evol functions.
// Authors:
//    4144
//    Travolta
// Description:
//    Build in functions.

function	script	menuimage	{
    return getarg(0) + "|" + getarg(1);
}

function	script	menuaction	{
    return "[" + getarg(0) + "]";
}

function	script	mesn	{
    if (getargcount() > 0)
    {
        .@s$ = "[" + getarg(0) + "]";
    }
    else
    {
        .@s$ = "[" + strnpcinfo(1) + "]";
    }
    mes .@s$;
    return;
}

function	script	mesq	{
    mes "\"" + getarg(0)+  "\"";
    return;
}

function	script	g	{
    return Sex == 0 ? getarg(0) : getarg(1);
}

function	script	col	{
    .@color = getarg(1);
    if (.@color < 0) .@color = 0;
    if (.@color > 9) .@color = 9;
    return "##" + .@color + getarg(0) + "##0";
}

function	script	adddefaultskills	{
    if (getskilllv(NV_BASIC) < 6)
    {
        skill NV_BASIC, 6, 0;
    }
    return;
}

function	script	str	{
    return "" + getarg(0);
}

function	script	addremovemapmask	{
    setmapmask getarg(0), (getmapmask(getarg(0)) | (getarg(1) + getarg(2))) ^ getarg(2);
    return;
}

// remove spaces at the start and end of string and return result
function	script	strip	{
    .@s$ = getarg(0);
    if (.@s$ == "")
        return "";
    .@start = 0;
    .@end = getstrlen(.@s$) - 1;
    for (.@i = .@start; .@i < .@end; .@i++)
    {
        if (charat(.@s$, .@i) != " ")
            break;
        else
            .@start++;
    }
    for (.@i = .@end; .@i >= .@start; .@i--)
    {
        if (charat(.@s$, .@i) != " ")
            break;
        else
            .@end--;
    }
    return substr(.@s$, .@start, .@end);
}

// Function to show narrator text. Accepts string args.
// If first arg is a number N, then it represents bit flags.
// Bit flags :
//   0x1 -- blank line at beginning
//   0x2 -- blank line at the end
//   0x4 -- use last "next;"
//   0x8 -- don't use first "mesn;"
function	script	narrator	{
    .@start = 0;
    .@argc = getargcount();
    .@flags = 0;

    if (.@argc > 1 && !isstr(getarg(0)))
    {
        .@start = 1;
        .@flags = getarg(0);
    }

    if (.@flags & 0x1)
        mes "";

    if (!(.@flags & 0x8))
        mesn l("Narrator");

    for (.@i = .@start; .@i < .@argc; .@i++)
    {
        mes col(getarg(.@i), 9);
        if (.@i < .@argc - 1)
            next;
    }

    if (.@flags & 0x4)
        next;
    else if (.@flags & 0x2)
        mes "";

    return;
}

// Function to show NPC speech. Accepts string args.
// If first arg is a number N, then it represents bit flags.
// Bit flags :
//   0x1 -- blank line at beginning
//   0x2 -- blank line at the end
//   0x4 -- use last "next;"
//   0x8 -- don't use first "mesn;"
function	script	speech	{
    .@start = 0;
    .@argc = getargcount();
    .@flags = 0;

    if (.@argc > 1 && !isstr(getarg(0)))
    {
        .@start = 1;
        .@flags = getarg(0);
    }

    if (.@flags & 0x1)
        mes "";

    if (!(.@flags & 0x8))
        mesn;

    for (.@i = .@start; .@i < .@argc; .@i++)
    {
        mesq getarg(.@i);

        if (.@i < .@argc - 1)
            next;
    }

    if (.@flags & 0x4)
        next;
    else if (.@flags & 0x2)
        mes "";

    return;
}

// Show debug message if .debug variable of NPC is set to 1
function	script	npcdebug	{
    if (getvariableofnpc(.debug, strnpcinfo(3)))
        debugmes strnpcinfo(3) + ": " + getarg(0);
    return;
}

function	script	abs	{
    .@n = getarg(0);
    return .@n >= 0 ? .@n : -.@n;
}

function	script	askyesno	{
    return select (menuaction(l("Yes")),
        menuaction(l("No")));
}

// Argument:
//  0 Quest variable
//  1 Current value
//  2 Next value
function	script	compareandsetq	{
    if (getq (getarg(0)) == getarg(1))
    {
        setq getarg(0), getarg(2);
        return true;
    }
    return false;
}

// Use a delay to prevent spams from NPC that display text without the
// use of (a) close/next function(s).
// Argument:
//  0 Text to display
//  1 Lock delay (default = 1)
//  2 Message function:  (default = 0)
//      0 = npctalk3
//      1 = npctalk
//      2 = message
function	script	npctalkonce	{
    if ((.@current_time = gettimetick(2)) < Repeat_NPC_lock)
    {
        return false;
    }
    Repeat_NPC_lock = .@current_time + getarg(1,1);

    if (getarg(2,0) == 0)
    {
        npctalk3 getarg(0);
    }
    else if (getarg(2,0) == 1)
    {
        npctalk getarg(0);
    }
    else if (getarg(2,0) == 2)
    {
        message strcharinfo(0), getarg(0);
    }

    return true;
}

// A somehow of BaseLevel * logn (BaseLevel * alpha).
// alpha = multiplicator factor.
// min = minimum result value.
function	script	lognbaselvl	{
    .@alpha = getarg(0, 1);
    .@min = getarg(1, 1);
    .@ret = 0;
    .@pc_level = BaseLevel * .@alpha;

    while (.@pc_level >>= 1)
    {
        ++.@ret;
    }
    .@ret *= BaseLevel;

    if (.@ret <= .@min)
    {
        .@ret = .@min;
    }

    return .@ret;
}