[Suggestion] Random function and system time #67

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1. AlexIIL commented on Feb 19, 2021

   

   AlexIIL

   on Feb 19, 2021

   Last edited by AlexIIL

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   Yes, these sound essential.

   I'm probably going to add:

   1. generate_seed(): Generates a new (48 bit integer) seed for use in other functions. (This should be saved in constants).
   2. random(seed): calls random_seeded(seed, 0)
   3. random(seed, index): returns a random number (between 0 and 1) based on both the seed and index - the idea being that you'd keep the seed the same, and pass an ever-increasing index to grab the next value for that seed.
   4. random_int(seed, max): calls random_int(seed, 0, max)
   5. random_int(seed, index, max): returns a random integer between 0 and max-1. Internally this is just min(max - 1, random(seed, index) * max), but it's a lot easier to type this way.
2. AlexIIL commented on Feb 19, 2021

   

   AlexIIL

   on Feb 19, 2021

   Last edited by AlexIIL

   Owner

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   I'm not so sure about using the system time directly for this - I'd rather people do:

   "constants": {
       "tip_interval": 8.0,
       "tip_seed": "generate_seed()",
       "slideshow_seed": "generate_seed()"
   },
   "renders": [{
       "image": {
           "parent": "builtin/text",
           "text": "(has_tips() & tip_interval > 0) ? tip(random_int(tip_seed, floor(time / tip_interval), tip_count())) : ''",
           "position_type": "BOTTOM_CENTER",
           "offset_pos": "BOTTOM_CENTER",
           "position": { "x": 0, "y": -10 }
       }
   }]

   Instead, as then I can generate proper random numbers based off whatever additional information the system has for secure random numbers.

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