[Plugin] RandomPlus

Wooo, my first plugin!

This plugin uses a Javascript port of the Mersenne Twister PRNG algorithm located here: gist.github.com/300494

Basically, the normal random() function in JS doesn't let you specify a seed, which is a problem if you want predictability in your randomness (little bit oxymoronic).

The main use I thought of for this is with world generation. Makes it a lot more efficient to save generated worlds, as you only have to save the seed and anything that the player has changed and you can just generate the rest on the fly.

The plugin can be found here:

dl.dropbox.com/u/1378330/RandomPlus/Random%20Plus.zip

A little example can be seen here:

dl.dropbox.com/u/1378330/RandomPlus/RandomPlus%20Example/index.html

The capx for that is here:

dl.dropbox.com/u/1378330/RandomPlus/RandomPlusExample.capx

Can anyone tell me why I'm getting that '0' at the beginning?

Thank you, I'm glad this exists, I was just looking for a way to seed.

cow_trix

Thanks, I am looking for this, too, in my mutli-player project.

I made another random generator from cow_trix 's reference

gist.github.com/300494

It could use independent, or provide random generator to other plugins like instance group.

I love the plugin, I can't figure out why it's not randomizing my planet layout. Can someone help please?

http://dl.dropbox.com/u/38339554/RogueLike.capx

Edit: You might need this plugin: scirra.com/forum/behavior-spaceship-movement-behavior_topic44038.html

Is this generating random values in the [0,1) range? (As in 0 is included, 1 is excluded.) Thank you

Can anyone tell me why I'm getting that '0' at the beginning?

Something to do with The 'first' range Value

If it is from 0 to 10 you get

0xx.xxxxxxx

If it is range 1 to 10 you get

1xx.xxxxxxx

Just a little quirk i noticed, unless that is what you meant to do...

What would be really cool is the ability to set a random range but tell it to ignore certain numbers. So if you want it to ignore the number 7 and that came up it would automatically pick another number.

Is there I way I can store a player's world in the seed?

cow_trix

Apologies for bringing this old thread up, but I can't figure the plugin out.

It takes three parameters, Seed/Min/Max.

If I set a seed and a Min/Max range, it should produce a persistent number for that seed, shouldn't it?

It doesn't, however. It produces random numbers within the range. Doesn't this defeat the point? My interest is in persistent seeded world generation.

Also, if I set min 10 and Max 100, it doesn't give me numbers from 10-99 (isn't that what the range is about?)

What am I missing? (running C2 r132)

Is there a new way to do this since then?

Is it best to use scirra.com/forum/plugin-seedrandom_topic60194.html ?

christina

Seed gives you a repeatable random number. That means that every number generated with that seed will come out in the same order when you use that seed again.

newt you're right! The example made me think the number is each time you hit the generate button.

Oh cool, this is perfect. Do you maybe know what RandomPlus-> Set Count to 0 means? It doesn't seem to do anything

Edit: ah got it, it returns the N randomly seeded number.

Thanks so much newt!

Its like another seed.

So if you were to set the count to 4, and the seed to 5 you would get different values than if you were to set the count to say 3, and seed to 5.

newt you lifesaver :)

It seems however that min=0 means 0 and min=1 means 10 and min=2 means 20

cow_trix are you sure you're not multiplying min*10 somewhere inside the plugin?

Hey christina, sorry for the late reply, I've been travelling for the past few months. Newt is correct on all counts except for what "Set Count to 0" does. This event basically resets the generator. For instance, the generator may output the following:

4 8 6 3 1 4 3 1

Resetting the count after all these values are generated means that the next value generated will be 4, then 8, and then so on and so forth. Basically the same numbers will be generated.

As for the problem with min/max, give me a bit to work it out. It's been over a year since I wrote this plugin and trying to understand old code is... fun.