working types and random

src/rand.c

@@ -0,0 +1,19 @@
+#include <math.h>
+
+float seed;
+
+void set_seed(unsigned long new_seed) { seed = (float)(new_seed % 1000000); }
+
+float rand(float seed) {
+  float v = powf(fabs(seed), 6. / 7.);
+  v *= sinf(v) + 1.;
+  return v - floorf(v);
+}
+
+unsigned char rand_uchar(unsigned int max) {
+  return (unsigned char)(rand(seed++) * max);
+}
+
+unsigned short rand_ushort(unsigned int max) {
+  return (unsigned short)(rand(seed++) * max);
+}