initial commit!

libs/libgccvb/random.c

@@ -0,0 +1,34 @@
+#include "random.h"
+
+
+// When run at startup gets a random number based on the changing CTA
+long randseed()
+{
+	long
+		random = 1;
+	int
+		rand,
+		prevnum = 0,
+		count = 1;
+
+	while (count < 30000)	//repeat through many times to make more random and to allow the CTA value to change multiple times
+	{
+		rand = VIP_REGS[CTA];						//CTA = (*(BYTE*)(0x0005F830));
+		if (random == 0) random = 1;				//prevent % by zero
+			
+		random += ((rand*count) + (count%random));	//just randomly doing stuff to the number
+
+		if (rand == prevnum)						//if the CTA value doesnt change then count up
+			count++;
+		else
+			count = 0;								//if the number does change then restart the counter
+		prevnum = rand;								//keep track of the last number
+	}
+	return random;									//returns the random seed
+}
+
+// Returns a random number in the requested range from the random seed
+int randnum(long seed, int randnums)
+{
+	return (seed%randnums);
+}