Add new rng module

src/main.rs

@@ -18,6 +18,7 @@ mod random_table;
 mod raws;
 mod rect;
 mod rex_assets;
+mod rng;
 mod saveload_system;
 mod spatial;
 mod spawner;

src/rng.rs

@@ -0,0 +1,18 @@
+use ::rltk::prelude::*;
+use std::sync::Mutex;
+
+lazy_static! {
+    static ref RNG: Mutex<RandomNumberGenerator> = Mutex::new(RandomNumberGenerator::new());
+}
+
+pub fn reseed(seed: u64) {
+    *RNG.lock().unwrap() = RandomNumberGenerator::seeded(seed);
+}
+
+pub fn roll_dice(n: i32, die_type: i32) -> i32 {
+    RNG.lock().unwrap().roll_dice(n, die_type)
+}
+
+pub fn range(min: i32, max: i32) -> i32 {
+    RNG.lock().unwrap().range(min, max)
+}