Added catch for when rand() sticks

[tpg/acess2.git] / Kernel / lib.c

diff --git a/Kernel/lib.c b/Kernel/lib.c
index b69bdd0..88dc90c 100644 (file)
--- a/Kernel/lib.c
+++ b/Kernel/lib.c
@@ -8,6 +8,7 @@
 #define        RANDOM_SEED     0xACE55052
 #define        RANDOM_A        0x00731ADE
 #define        RANDOM_C        12345
+#define        RANDOM_SPRUCE   0xf12b02b
 //                          Jan Feb Mar Apr May  Jun  Jul  Aug  Sept Oct  Nov  Dec
 const short DAYS_BEFORE[] = {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334};
 #define UNIX_TO_2K     ((30*365*3600*24) + (7*3600*24))        //Normal years + leap years
@@ -325,7 +326,11 @@ Uint rand()
        randomState ^= 0x9A3C5E78;
        return ret;
        #else
+       Uint    old = giRandomState;
        giRandomState = (RANDOM_A*giRandomState + RANDOM_C) & 0xFFFFFFFF;
+       if(giRandomState == old) {
+               giRandomState += RANDOM_SPRUCE;
+       }
        Log("giRandomState = 0x%x", giRandomState);
        return giRandomState;
        #endif