fixed rng

seed.go

@@ -0,0 +1,17 @@
+package main
+
+import "math/rand"
+
+type SeedProvider struct {
+	rand *rand.Rand
+}
+
+func NewSeedProvider(seed int64) *SeedProvider {
+	return &SeedProvider{
+		rand: rand.New(rand.NewSource(seed)),
+	}
+}
+
+func (sp *SeedProvider) Next() int64 {
+	return sp.rand.Int63()
+}