Problem
I need understand how i can generate random numbers. And the end i need generate random number from 1 to 5.
Solution
Using Math.random and Math.ceil
Detailed explanation
Steps how all this must work:
1. Need generate random number
trace("Need generate random number");
trace(Math.random());
If you want to see for example first 100 generated numbers you can use next code:
trace("Need generate random number");
for (var i=0; i<100; i++) {
var a=Math.random();
trace(a);
}
2. Multiply generated number (from step 1) by 5
trace("Multiply generated number (from step 1) by 5");
var randomNumber:Number=Math.random();
var multiplied:Number=randomNumber*5;
trace(multiplied);
If you want to see first 100 numbers you can use next code:
trace("Multiply generated number (from step 1) by 5");
for (var i=0; i<100; i++) {
var randomNumber:Number=Math.random();
var multiplied:Number=randomNumber*5;
trace(multiplied);
}
3. In the end you need calculate ceiling.
trace("In the end you need calculate ceiling.");
var randomNumber:Number=Math.random();
var multiplied:Number=randomNumber*5;
var ceiling:Number=Math.ceil(multiplied);
trace(ceiling);
To see first 100 numbers you can use next code:
trace("In the end you need calculate ceiling.");
for (var i=0; i<100; i++) {
var randomNumber:Number=Math.random();
var multiplied:Number=randomNumber*5;
var ceiling:Number=Math.ceil(multiplied);
trace(ceiling);
}
But on page http://help.adobe.com/en_US/AS3LCR/Flash_10.0/Math.html#random%28%29 you can find next info:
Returns a pseudo-random number n, where 0 <= n < 1. The number returned is calculated in an undisclosed manner, and pseudo-random because the calculation inevitably contains some element of non-randomness.
So its mean possible next situation: 0x5=0 and we will get 0. But we need numbers from 1 to 5. So we can use next code:
trace("In the end you need calculate ceiling.");
for (var i=0; i<100; i++) {
var randomNumber:Number=Math.random();
var multiplied:Number=randomNumber*4;
var ceiling:Number=1+Math.ceil(multiplied);
trace(ceiling);
}
You can unite this 3 lines to 1:
var myRandomNumber:Number = Math.ceil(Math.random() * 5);
trace(myRandomNumber);
Also you can see 100 random numbers:
for (var i=0; i<100; i++)
{
var myRandomNumber:Number = Math.ceil(Math.random() * 5);
trace(myRandomNumber);
}
In attached files you can find file with code.
Source:
random
Thank you for reading.