Difference between revisions of "RandomGenerator:setSeed"
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{{newin|[[0.9.0]]|090|type=function}} | {{newin|[[0.9.0]]|090|type=function}} | ||
| − | + | Sets the seed of the random number generator using the specified integer number. | |
| − | |||
== Function == | == Function == | ||
=== Synopsis === | === Synopsis === | ||
<source lang="lua"> | <source lang="lua"> | ||
| − | RandomGenerator: | + | RandomGenerator:setSeed( seed ) |
</source> | </source> | ||
=== Arguments === | === Arguments === | ||
| − | {{param|number|seed|The seed | + | {{param|number|seed|The integer number with which you want to seed the randomization. Must be within the range of [1, 2^53].}} |
=== Returns === | === Returns === | ||
Nothing. | Nothing. | ||
| + | === Notes === | ||
| + | Due to Lua's use of double-precision floating point numbers, values above 2^53 cannot be accurately represented. Use the other variant of this function if your seed will have a larger value. | ||
| + | == Function == | ||
| + | Combines two 32-bit integer numbers into a 64-bit integer value and sets the seed of the random number generator using the value. | ||
| + | === Synopsis === | ||
| + | <source lang="lua"> | ||
| + | RandomGenerator:setSeed( low, high ) | ||
| + | </source> | ||
| + | === Arguments === | ||
| + | {{param|number|low|The lower 32 bits of the seed value. Must be within the range of [0, 2^32 - 1].}} | ||
| + | {{param|number|high|The higher 32 bits of the seed value. Must be within the range of [0, 2^32 - 1].}} | ||
| + | === Returns === | ||
| + | Nothing. | ||
| + | == Examples == | ||
| + | Creates a new RandomGenerator object, sets the seed to the system clock's time, then generates a number between 1 and 100 inclusive. Note that the seed can be any number within the range of [0, 2^53 - 1]. | ||
| + | <source lang="lua"> | ||
| + | function love.load() | ||
| + | rng = love.math.newRandomGenerator() | ||
| + | rng:setSeed(os.time()) | ||
| + | randomNumber = rng:random(1,100) | ||
| + | end | ||
| + | </source> | ||
== See Also == | == See Also == | ||
* [[parent::RandomGenerator]] | * [[parent::RandomGenerator]] | ||
| − | * [[ | + | * [[RandomGenerator:getSeed]] |
* [[love.math]] | * [[love.math]] | ||
[[Category:Functions]] | [[Category:Functions]] | ||
| − | {{#set:Description= | + | {{#set:Description=Sets the seed of the random number generator.}} |
== Other Languages == | == Other Languages == | ||
| − | {{i18n|RandomGenerator: | + | {{i18n|RandomGenerator:setSeed}} |
Latest revision as of 07:05, 18 December 2013
| Available since LÖVE 0.9.0 |
| This function is not supported in earlier versions. |
Sets the seed of the random number generator using the specified integer number.
Contents
Function
Synopsis
RandomGenerator:setSeed( seed )
Arguments
number seed- The integer number with which you want to seed the randomization. Must be within the range of [1, 2^53].
Returns
Nothing.
Notes
Due to Lua's use of double-precision floating point numbers, values above 2^53 cannot be accurately represented. Use the other variant of this function if your seed will have a larger value.
Function
Combines two 32-bit integer numbers into a 64-bit integer value and sets the seed of the random number generator using the value.
Synopsis
RandomGenerator:setSeed( low, high )
Arguments
number low- The lower 32 bits of the seed value. Must be within the range of [0, 2^32 - 1].
number high- The higher 32 bits of the seed value. Must be within the range of [0, 2^32 - 1].
Returns
Nothing.
Examples
Creates a new RandomGenerator object, sets the seed to the system clock's time, then generates a number between 1 and 100 inclusive. Note that the seed can be any number within the range of [0, 2^53 - 1].
function love.load()
rng = love.math.newRandomGenerator()
rng:setSeed(os.time())
randomNumber = rng:random(1,100)
end
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