random: Difference between revisions
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m (Reverted edits by Heecf..... (talk) to last revision by Str) |
(Added probability clarification to round and floor.) |
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* 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. | * 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.<br>To return a whole number use either '''[[round]]''', '''[[ceil]]''' or '''[[floor]]''' together with '''random''':<br> | * The number returned is unlikely to be a whole number.<br>To return a whole number use either '''[[round]]''', '''[[ceil]]''' or '''[[floor]]''' together with '''random''':<br> | ||
x=round(random 5) will return 0,1,2,3,4 or 5. | x=round(random 5) will return 0,1,2,3,4 or 5. (non-uniform 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. | 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) | x=ceil(random 5) will return 0,1,2,3,4 or 5. (0 is very unlikely, but possible, as ceil 0 is 0) | ||
<!-- Note Section END --> | <!-- Note Section END --> | ||
</dl> | </dl> |
Revision as of 12:09, 28 December 2012
Description
- Description:
- Random real (floating point) value from 0 (inclusive) to x (not inclusive).
- Groups:
- Uncategorised
Syntax
Examples
- Example 1:
_rNumber = random 1
Additional Information
- See also:
- Math Commands
Notes
-
Report bugs on the Feedback Tracker and/or discuss them on the Arma Discord or on the Forums.
Only post proven facts here! Add Note
Notes
- 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.
To return a whole number use either round, ceil or floor together with random:
Bottom Section
Categories:
- Scripting Commands
- Introduced with Operation Flashpoint version 1.00
- Operation Flashpoint: New Scripting Commands
- Operation Flashpoint: Scripting Commands
- Command Group: Uncategorised
- Scripting Commands OFP 1.96
- Scripting Commands OFP 1.46
- Scripting Commands ArmA
- Command Group: Variables
- Scripting Commands ArmA2
- Scripting Commands Take On Helicopters