Difference between revisions of "random"
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Lou Montana (talk  contribs) m (Text replacement  "{{since" to "{{Since") 
Lou Montana (talk  contribs) m (Text replacement  "_{10,} " to "") 

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{{CommandComments=  {{CommandComments=  
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 ofp Game name=   ofp Game name=  
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gr1= Math GROUP1=  gr1= Math GROUP1=  
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[[Image:bellcurve.jpgright200px]] Random real (floating point) value from 0 (inclusive) to x (not inclusive).<br>  [[Image:bellcurve.jpgright200px]] Random real (floating point) value from 0 (inclusive) to x (not inclusive).<br>  
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* allowing to generate semirandom number based on provided seed ('''Alternative Syntax 2''')  * allowing to generate semirandom number based on provided seed ('''Alternative Syntax 2''')  
* generating pseudorandom [https://en.wikipedia.org/wiki/Perlin_noise noise texture] based on provided seed and returning a single number between 0 (included) and 1 (excluded) at supplied ''x'' and ''y'' coordinates ('''Alternative Syntax 3''') Description=  * generating pseudorandom [https://en.wikipedia.org/wiki/Perlin_noise noise texture] based on provided seed and returning a single number between 0 (included) and 1 (excluded) at supplied ''x'' and ''y'' coordinates ('''Alternative Syntax 3''') Description=  
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 [[random]] x Syntax=   [[random]] x Syntax=  
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 [[Number]] Return value=   [[Number]] Return value=  
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s2= [[random]] [min, mid, max] {{Sincearma31.55.133393y}} Syntax 2=  s2= [[random]] [min, mid, max] {{Sincearma31.55.133393y}} Syntax 2=  
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p24= max: [[Number]] Parameter 24=  p24= max: [[Number]] Parameter 24=  
r2= [[Number]]Return value 2=  r2= [[Number]]Return value 2=  
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s3= seed [[random]] x {{Sincearma31.67.139663y}} Syntax 3=  s3= seed [[random]] x {{Sincearma31.67.139663y}} Syntax 3=  
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p42= x: [[Number]] Parameter 42=  p42= x: [[Number]] Parameter 42=  
r3= [[Number]]  value from 0 to x Return value 3=  r3= [[Number]]  value from 0 to x Return value 3=  
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s4= seed [[random]] [x, y] {{Sincearma31.67.139663y}} Syntax 4=  s4= seed [[random]] [x, y] {{Sincearma31.67.139663y}} Syntax 4=  
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p64= y: [[Number]] Parameter 64=  p64= y: [[Number]] Parameter 64=  
r4= [[Number]]  value from 0 to 1 Return value 4=  r4= [[Number]]  value from 0 to 1 Return value 4=  
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x1= <code>_rNumber = [[random]] 1;</code> Example 1=  x1= <code>_rNumber = [[random]] 1;</code> Example 1=  
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{{cc{{Sincearma31.55.133393}}}}  {{cc{{Sincearma31.55.133393}}}}  
_random = [[selectRandom]] _array;</code> Example 4=  _random = [[selectRandom]] _array;</code> Example 4=  
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 [[selectRandom]], [[selectRandomWeighted]] See also=   [[selectRandom]], [[selectRandomWeighted]] See also= 
Revision as of 03:17, 17 January 2021
Notes
 Posted on July 12, 2015  20:32 (UTC)
 Hcpookie

Random selections including negative numbers can be obtained via:
_Xrnd = round(random 200) 100;
This will yield numbers between 100 and 100. Be careful using random numbers in multiplayer, each client will come up with a different result. See multiplayer tutorials for more general information about locality.
 The number returned is unlikely to be a whole number.
x = round(random 5) will return 0,1,2,3,4 or 5. (nonuniform distribution, 0 and 5 are half as likely to be selected than any of the other numbers) x = floor(random 5) will return 0,1,2,3 or 4. (uniform distribution, all numbers have the same probability of being selected) x = ceil(random 5) will return 0,1,2,3,4 or 5. (0 is very unlikely, but possible, as ceil 0 is 0)
 Posted on July 22, 2018  12:58 (UTC+2)
 Lou Montana

Repartition comparison Formula 0 1 2 3 4 5 6 7 8 9 floor random 10; 10% 10% 10% 10% 10% 10% 10% 10% 10% 10% floor random [0, 5, 10] 0% 2% 7% 17% 25% 25% 17% 7% 2% 0% floor random [0, 10, 0] 0% 0% 1% 2% 5% 9% 14% 19% 24% 26% floor random [0, 10, 5] 0% 0% 0% 1% 2% 5% 9% 16% 28% 38%