There are many code snippets on the forum for random numbers. This example is for a project Im doing that needs to randomly select 1 of 4 LED's. Im not too worried that its pseduo random but this code will get you a random number between 1 and 4 (but makes sure you dont get the same number twice in a row).
NOTE the upper limit is exclusive so for random numbers beween 1 and 4 we use 1 & 5. If you wanted a number between 2 and 6 you'd use 2 & 7.
NOTE the upper limit is exclusive so for random numbers beween 1 and 4 we use 1 & 5. If you wanted a number between 2 and 6 you'd use 2 & 7.
Dim rNumber As Byte = 0
RunNative("getRandomNoDuplicate", Null)
Log("rNumber = ", rNumber)
#if C
int prevValue = -1;
int lower = 1;
int upper = 5;
void getRandomNoDuplicate(B4R::Object* o)
{
static int offset = 0;
int randNumber = random(lower, upper);
if (prevValue == randNumber)
{
offset++;
if (offset >= upper - lower) offset = 1;
randNumber += offset;
if (randNumber >= upper) randNumber = lower + randNumber - upper;
}
prevValue = randNumber;
b4r_main::_rnumber = randNumber;
}
#End If
