Methods

<static> findClosest(value, arr) → {number}

Snaps a value to the nearest value in an array. The result will always be in the range [first_value, last_value].

Parameters:

Name	Type	Description
value	number	The search value
arr	Array.<number>	The input array which must be sorted.

Returns:

number -

The nearest value found.

Source - utils/ArrayUtils.js, line 174

<static> getRandomItem(objects, startIndex, length) → {object}

Fetch a random entry from the given array.

Will return null if there are no array items that fall within the specified range or if there is no item for the randomly choosen index.

Parameters:

Name	Type	Description
objects	Array.<any>	An array of objects.
startIndex	integer	Optional offset off the front of the array. Default value is 0, or the beginning of the array.
length	integer	Optional restriction on the number of values you want to randomly select from.

Returns:

object -

The random object that was selected.

Source - utils/ArrayUtils.js, line 27

<static> removeRandomItem(objects, startIndex, length) → {object}

Removes a random object from the given array and returns it.

Will return null if there are no array items that fall within the specified range or if there is no item for the randomly choosen index.

Parameters:

Name	Type	Description
objects	Array.<any>	An array of objects.
startIndex	integer	Optional offset off the front of the array. Default value is 0, or the beginning of the array.
length	integer	Optional restriction on the number of values you want to randomly select from.

Returns:

object -

The random object that was removed.

Source - utils/ArrayUtils.js, line 53

<static> rotate(array) → {any}

Moves the element from the start of the array to the end, shifting all items in the process. The "rotation" happens to the left.

Parameters:

Name	Type	Description
array	Array.<any>	The array to shift/rotate. The array is modified.

Returns:

any -

The shifted value.

Source - utils/ArrayUtils.js, line 197

<static> rotateMatrix(matrix, direction) → {Array.<Array.<any>>}

Rotates the given matrix (array of arrays).

Based on the routine from http://jsfiddle.net/MrPolywhirl/NH42z/.

Parameters:

Name	Type	Description
matrix	Array.<Array.<any>>	The array to rotate; this matrix may be altered.
direction	number | string	The amount to rotate: the roation in degrees (90, -90, 270, -270, 180) or a string command ('rotateLeft', 'rotateRight' or 'rotate180').

Returns:

Array.<Array.<any>> -

The rotated matrix. The source matrix should be discarded for the returned matrix.

Source - utils/ArrayUtils.js, line 134

<static> shuffle(array) → {Array.<any>}

A standard Fisher-Yates Array shuffle implementation which modifies the array in place.

Parameters:

Name	Type	Description
array	Array.<any>	The array to shuffle.

Returns:

Array.<any> -

The original array, now shuffled.

Source - utils/ArrayUtils.js, line 82

<static> transposeMatrix(array) → {Array.<Array.<any>>}

Transposes the elements of the given matrix (array of arrays).

Parameters:

Name	Type	Description
array	Array.<Array.<any>>	The matrix to transpose.

Returns:

Array.<Array.<any>> -

A new transposed matrix

Source - utils/ArrayUtils.js, line 103

numberArray(start, end) → {Array.<number>}

Create an array representing the inclusive range of numbers (usually integers) in [start, end]. This is equivalent to numberArrayStep(start, end, 1).

Parameters:

Name	Type	Description
start	number	The minimum value the array starts with.
end	number	The maximum value the array contains.

Returns:

Array.<number> -

The array of number values.

Source - utils/ArrayUtils.js, line 214

numberArrayStep(start, end, step) → {Array}

Create an array of numbers (positive and/or negative) progressing from start up to but not including end by advancing by step.

If start is less than stop a zero-length range is created unless a negative step is specified.

Certain values for start and end (eg. NaN/undefined/null) are currently coerced to 0; for forward compatibility make sure to pass in actual numbers.

Parameters:

Name	Type	Argument	Default	Description
start	number			The start of the range.
end	number			The end of the range.
step	number	<optional>	1	The value to increment or decrement by.

Returns:

Array -

Returns the new array of numbers.

Source - utils/ArrayUtils.js, line 236

Example

Phaser.ArrayUtils.numberArrayStep(4);
// => [0, 1, 2, 3]

Phaser.ArrayUtils.numberArrayStep(1, 5);
// => [1, 2, 3, 4]

Phaser.ArrayUtils.numberArrayStep(0, 20, 5);
// => [0, 5, 10, 15]

Phaser.ArrayUtils.numberArrayStep(0, -4, -1);
// => [0, -1, -2, -3]

Phaser.ArrayUtils.numberArrayStep(1, 4, 0);
// => [1, 1, 1]

Phaser.ArrayUtils.numberArrayStep(0);
// => []