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ADDED: Pseudo-random numbers generator!

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This commit is contained in:
Ray 2023-10-29 21:11:30 +01:00
commit fc7dcff4a7
5 changed files with 340 additions and 13 deletions
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41
src/rcore.c
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@ -131,6 +131,11 @@
#include "external/sdefl.h" // Deflate (RFC 1951) compressor
#endif
#if defined(SUPPORT_RPRAND_GENERATOR)
#define RPRAND_IMPLEMENTATION
#include "external/rprand.h"
#endif
#if defined(__linux__) && !defined(_GNU_SOURCE)
#define _GNU_SOURCE
#endif
@ -1647,31 +1652,43 @@ void WaitTime(double seconds)
// NOTE: Functions with a platform-specific implementation on rcore_<platform>.c
//void OpenURL(const char *url)
// Set the seed for the random number generator
void SetRandomSeed(unsigned int seed)
{
#if defined(SUPPORT_RPRAND_GENERATOR)
rprand_set_seed(seed);
#else
srand(seed);
#endif
}
// Get a random value between min and max (both included)
// WARNING: Ranges higher than RAND_MAX will return invalid results
// More specifically, if (max - min) > INT_MAX there will be an overflow,
// and otherwise if (max - min) > RAND_MAX the random value will incorrectly never exceed a certain threshold
int GetRandomValue(int min, int max)
{
int value = 0;
if (min > max)
{
int tmp = max;
max = min;
min = tmp;
}
#if defined(SUPPORT_RPRAND_GENERATOR)
value = rprand_get_value(min, max);
#else
// WARNING: Ranges higher than RAND_MAX will return invalid results
// More specifically, if (max - min) > INT_MAX there will be an overflow,
// and otherwise if (max - min) > RAND_MAX the random value will incorrectly never exceed a certain threshold
if ((unsigned int)(max - min) > (unsigned int)RAND_MAX)
{
TRACELOG(LOG_WARNING, "Invalid GetRandomValue() arguments, range should not be higher than %i", RAND_MAX);
}
return (rand()%(abs(max - min) + 1) + min);
}
// Set the seed for the random number generator
void SetRandomSeed(unsigned int seed)
{
srand(seed);
value = (rand()%(abs(max - min) + 1) + min);
#endif
return value;
}
// Takes a screenshot of current screen (saved a .png)