fixed up comments

seed.go

@@ -2,16 +2,21 @@ package main
 
 import "math/rand"
 
+// SeedProvider is a simple struct that provides a stream of random seeds
+// from a single initial seed. This ensures that the entire map generation
+// process is deterministic if the same initial seed is used.
 type SeedProvider struct {
 	rand *rand.Rand
 }
 
+// NewSeedProvider creates a new SeedProvider with the given initial seed.
 func NewSeedProvider(seed int64) *SeedProvider {
 	return &SeedProvider{
 		rand: rand.New(rand.NewSource(seed)),
 	}
 }
 
+// Next returns the next random seed in the sequence.
 func (sp *SeedProvider) Next() int64 {
 	return sp.rand.Int63()
 }