moved some stuff into random util

src/util/random.rs

@@ -1,4 +1,5 @@
 use rand::rngs::ThreadRng;
+use rand::Rng;
 
 pub struct RandomGen {
     pub rng: ThreadRng,
@@ -10,4 +11,8 @@ impl RandomGen {
             rng: rand::thread_rng(),
         }
     }
+
+    pub fn range_random_from_one(&mut self, limit: i32) -> i32 {
+        self.rng.gen_range(1..limit)
+    }
 }