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Replace util_rand with built-in rand

This commit is contained in:
Philip Goto 2017-08-16 14:11:38 +02:00 committed by Michael Steenbeek
parent 6b47bbfc15
commit c75be48653
1 changed files with 2 additions and 14 deletions
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16
src/openrct2/util/util.c
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@ -400,24 +400,12 @@ bool str_is_null_or_empty(const char *str)
return str == NULL || str[0] == 0;
}
uint32 srand0, srand1, srand2, srand3;
void util_srand(sint32 source) {
srand0 = source;
srand1 = srand0 ^ (source >> 24);
srand2 = srand1 ^ (source >> 16);
srand3 = srand2 ^ (source >> 8);
util_rand(); // skip the first value as it's parity is predictable (always even).
srand(source);
}
uint32 util_rand() {
uint32 temp = srand0 ^ (srand0 << 11);
srand0 = srand1;
srand1 = srand2;
srand2 = srand3;
srand3 = srand3 ^ (srand3 >> 19) ^ temp ^ (temp >> 8);
return srand3;
return rand();
}
#define CHUNK 128*1024