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User's Scripts

parseInt

Parse a numeric string in some specified base and the quantity as an integer

toString

Generates a string representation of an integer using the specified base

line_intersects_line

Tests whether the line (NOT line segment) running from (x1, y1) to (x2, y2) intersects the line running from (x3, y3) to (x4, y4).

arab2roman

Constructs a Roman numeric representation of a given integer (which should be typed as a real, not a string) between 1 and 3,999,999.

string_soundex

Returns the Soundex code of some string

dec2hex

Returns a hexadecimal string representation of some integer (which should be given as a real, not a string).

string_generate

Generate a string based on the given format, mimicking the behavior of printf in other languages. This is a simplified version of the routine, so it only supports the following...

string_invert_case

Inverts the case of some string, making all the lowercase letters uppercase and vice-versa.

string_split

Splits a string into parts of size part_size and returns the pieces in a ds_list. For example, string_split("abcdefg", 2) yields [ab, cd, ef, g].

string_pad

Pads some string to a certain length by applying some pad string on the direction of choice.

mod_alt

GML's modulo operator is implemented in such a way that the result always has the same sign as the dividend. For example, (-7 mod 2) evaluates to -1. This script implements the...

timediff

Returns a string describing the given time interval (dt) in English. For example, timediff(1000*60*60*34) will give "one day, ten hours".

string_confine_width

Trims characters from the end of a string until it is no wider than max_width. If trimming is necessary, the suffix (typically "...") will be appended on to the end of the string....

string_confine_length

Trims characters from the end of a string until it is no longer than max_length. If trimming is necessary, the suffix (typically "...") will be appended on to the end of the string....

is_odd

Returns whether some number is in the set of odd numbers: {.., -3, -1, 1, 3, ..}

is_even

Return whether some number is in the set of even numbers: {.., -4, -2, 0, 2, 4, ..}

is_prime

A general primality test

ds_list_subset_can_sum

Tests whether some subset of the given list has a given sum. The algorithm is fast with small (target) sums, but slow with larger ones.

set_bit

Returns a modified version of n with some specified bit set to val. bit=0 indicates the least significant bit (worth 1, usually written on the far right), bit=1 indicates the next...

get_bit

Extracts one bit from some number n. bit=0 indicates the least significant bit (worth 1, usually written on the far right), bit=1 indicates the next (worth 2), and so forth; in...

ds_list_foldl

Folds a ds_list from right to left and returns the result. This works as follows. The first sub-result is obtained by executing scr with two arguments: init, and the last element of the list....

ds_list_foldr

Folds a ds_list from left to right and returns the result. This works as follows. The first sub-result is obtained by executing scr with two arguments: init, and the first element of the list....

ds_list_normalize

Normalizes a list of reals so that all the entries add up to 1

draw_text_wave

Draws some text in the pattern of a wave with the given magnitude

matrix_sum

Returns the sum of two matrices. These should both be ds_grids filled with real entries.

matrix_is_symmetric

Returns the whether some matrix M is symmetric, i.e., equivalent to its transpose. M should be a ds_grid filled with real entries.

matrix_transpose

Returns the transpose of some matrix M. This should be a ds_grid filled with real entries.

matrix_is_diagonal

Returns whether some square matrix M is a diagonal matrix. M should be a ds_grid filled with real entries.

matrix_is_lower_triangular

Returns whether some square matrix M is a lower triangular matrix. M should be a ds_grid filled with real entries.

matrix_is_upper_triangular

Returns whether some square matrix M is an upper triangular matrix. M should be a ds_grid filled with real entries.

matrix_determinant

Returns the determinant of some square matrix M using the recursive method. M should be a ds_grid filled with real entries.

matrix_identity

Returns an identity matrix with the given dimension

matrix_exponential

Returns the exponential of some square matrix M. This should both a ds_grid filled with real entries. This script uses the simple optimization of M^(2n) = (M^n)*(M^n), so it consumes O(log n) time....

matrix_product

Returns the matrix product of M1 and M2. These should both be ds_grids filled with real entries. This script uses the simple O(n^3) technique.

matrix_scale

Returns a scaled transformation of some matrix M. This should be a ds_grid filled with real entries.

fibonacci

Computes the n'th number in the fibonacci sequence. This is faster than the iterative method, but loses precision more quickly, making it accurate up to n=75....

fibonacci

Computes the n'th number of the fibonacci sequence iteratively, taking O(n) time. This is accurate up to n=78.

point_in_circle

Tests whether the point (x, y) lies inside a circle with vertex (xv, yv) and radius r

ds_list_concat

Constructs (and returns) a concatenation of L1 and L2 without mofifying either of the two lists

draw_text_progressive

Draws some text progressively, with a given delay between each character. The user can hold down a key (shift by default) to speed up the progression, or another key (space by...

string_ROT13

"Encrypts" a string using the classic rot13 algorithm. (See ROT13 on Wikipedia.)

ds_list_map

Transforms each element of a list by mapping it through a 1-ary script

ds_list_filter

Filters a list by calling script on each element and retaining only the elements for which the (1-ary) script returns true

ds_list_reverse

Reverses the order of elements in some list with minimal overhead

ds_grid_repr

Returns a string representation of the given grid

ds_priority_repr

Returns a string representation of the given priority queue

ds_map_repr

Returns a string representation of the given map

ds_queue_repr

Returns a string representation of the given queue

ds_stack_repr

Returns a string representation of the given stack

string_scramble

Scrambles the characters in a string

draw_piechart

Draws a pie chart illustrating the given list of data. The list does not need to be normalized; this is done automatically. Note that this function only draws the shape of the chart, not the labels....

equal

Tests whether two pieces of data are equal in both type and content. Useful for avoiding errors from comparing strings with reals.

is_power

Tests whether n is a power of base; more precisely, whether there exists some power p such that base^p = n.

num_divisors

Computes how many unique natural numbers divide evenly into the argument

ds_list_repr

Returns a string representation of a list in the form [E1, E2, ...]. Useful for debugging.

ds_list_min

Returns the smallest real in a list of reals

ds_list_max

Returns the largest real in a list of reals

ds_list_sum

Sums the entries in a list of reals

ds_list_sort_ext

This script sorts a list using a given quantifier script. This should be a 1-ary script which takes a list element as input and returns a real value that can be used in sorting. For...

ds_list_remove_redundancy

Efficiently removes redundant elements from a list

ds_list_random_element

Returns a randomly-selected element of the given list

string_ucwords

Converts the first character of each word in a string to uppercase

string_ucfirst

Converts the first character of a string to uppercase

string_trim

Removes whitespace from both sides of a string

draw_text_wordwrapped

An efficient method for drawing multiple lines of text with word wrapping. The arguments are identical to those used in draw_text_ext.

factorial

Computes the factorial of some number iteratively, avoid the overhead of recursion

random_integer

Generates a random integer between min and max, inclusive

string_implode

Joins together multiple strings (pieces) into one combined string

string_explode

Breaks apart a string into a list of pieces separated by delimiter

draw_text_outlined

A very customizable function for drawing text with an outline

tile_background_outside_room

GM contains something of an inconsistency, arguably a bug. In general, it does not limit you to the dimensions you choose to give to your room - it will handle instances that go...

random_word

Generates a random word. The result may not be an actual dictionary term, but it should have a natural sound (resulting from a good consonant/vowel arrangement)....

random_letter

Returns a randomly-chosen consonant or vowel

rotate_smoothly_toward

Rotate some angle toward some other target angle with a given speed, slowing down as the target comes near

rotate_toward

Rotate some angle toward some other target angle with a given speed

draw_text_shadowed

Draw text with a shadow underneath

decimal2fraction

Converts a decimal number into a fraction (represented as a string)

string_decrypt

The decryption function corresponding to string_encrypt

string_encrypt

A standard encryption function

data_unpack

Unpacks data stored with data_pack function and stores the individual values in an array

data_pack

Packs the given data pieces into a single value and returns it as a condensed string

bin2str

Converts a binary sequence string to an ASCII string

str2bin

Converts a regular string to a binary sequence string

bin2int

Converts a binary sequence of any size into integer format

int2bin

Converts an integer of any size into binary format

string_reverse

Reverses the characters in a string

is_palindromic

Tests whether the given string is palindromic

draw_circle_ext

A highly generalized function for drawing circular shapes