diff --git a/84_Super_Star_Trek/rust/src/commands.rs b/84_Super_Star_Trek/rust/src/commands.rs
index 2f42edd5..3239b45e 100644
--- a/84_Super_Star_Trek/rust/src/commands.rs
+++ b/84_Super_Star_Trek/rust/src/commands.rs
@@ -1,6 +1,48 @@
-use crate::{model::{Galaxy, Pos, COURSES, EndPosition}, view};
+use crate::{model::{Galaxy, Pos, COURSES, EndPosition}, view, input};
 
-pub fn move_enterprise(course: u8, warp_speed: f32, galaxy: &mut Galaxy) {
+pub fn get_amount_and_set_shields(galaxy: &mut Galaxy, provided: Vec<String>) {
+
+    // todo check for damaged module
+
+    view::energy_available(galaxy.enterprise.total_energy);
+    let value = input::param_or_prompt_value(&provided, 0, "Number of units to shields", 0, i32::MAX);
+    if value.is_none() {
+        view::shields_unchanged();
+        return;
+    }
+    let value = value.unwrap() as u16;
+    if value > galaxy.enterprise.total_energy {
+        view::ridiculous();
+        view::shields_unchanged();
+        return;
+    }
+
+    galaxy.enterprise.shields = value;
+    view::shields_set(value);
+}
+
+pub fn gather_dir_and_speed_then_move(galaxy: &mut Galaxy, provided: Vec<String>) {
+
+    let course = input::param_or_prompt_value(&provided, 0, "Course (1-9)?", 1, 9);
+    if course.is_none() {
+        view::bad_nav();
+        return;
+    }
+
+    let speed = input::param_or_prompt_value(&provided, 1, "Warp Factor (0-8)?", 0.0, 8.0);
+    if speed.is_none() {
+        view::bad_nav();
+        return;
+    }
+
+    move_klingons_and_fire(galaxy);
+    if galaxy.enterprise.destroyed {
+        return;
+    }
+    move_enterprise(course.unwrap(), speed.unwrap(), galaxy);
+}
+
+fn move_enterprise(course: u8, warp_speed: f32, galaxy: &mut Galaxy) {
 
     let ship = &mut galaxy.enterprise;
 
@@ -67,7 +109,7 @@ fn find_end_quadrant_sector(start_quadrant: Pos, start_sector: Pos, course: u8,
     EndPosition { quadrant, sector, hit_edge, energy_cost }
 }
 
-pub fn move_klingons_and_fire(galaxy: &mut Galaxy) {
+fn move_klingons_and_fire(galaxy: &mut Galaxy) {
     let quadrant = &mut galaxy.quadrants[galaxy.enterprise.quadrant.as_index()];
     for k in 0..quadrant.klingons.len() {
         let new_sector = quadrant.find_empty_sector();
diff --git a/84_Super_Star_Trek/rust/src/input.rs b/84_Super_Star_Trek/rust/src/input.rs
new file mode 100644
index 00000000..75f12102
--- /dev/null
+++ b/84_Super_Star_Trek/rust/src/input.rs
@@ -0,0 +1,37 @@
+use std::{io::{stdin, stdout, Write}, str::FromStr};
+
+pub fn prompt(prompt_text: &str) -> Vec<String> {
+    let stdin = stdin();
+    let mut stdout = stdout();
+
+    print!("{prompt_text} ");
+    let _ = stdout.flush();
+
+    let mut buffer = String::new();
+    if let Ok(_) = stdin.read_line(&mut buffer) {
+        return buffer.trim_end().split(" ").map(|s| s.to_string()).collect();
+    }
+    Vec::new()
+}
+
+pub fn prompt_value<T: FromStr + PartialOrd>(prompt_text: &str, min: T, max: T) -> Option<T> {
+    let passed = prompt(prompt_text);
+    if passed.len() != 1 {
+        return None
+    }
+    match passed[0].parse::<T>() {
+        Ok(n) if (n >= min && n <= max) => Some(n),
+        _ => None
+    }
+}
+
+pub fn param_or_prompt_value<T: FromStr + PartialOrd>(params: &Vec<String>, param_pos: usize, prompt_text: &str, min: T, max: T) -> Option<T> {
+    if params.len() > param_pos {
+        match params[param_pos].parse::<T>() {
+            Ok(n) => Some(n),
+            _ => None
+        }
+    } else {
+        return prompt_value::<T>(prompt_text, min, max);
+    }
+}
\ No newline at end of file
diff --git a/84_Super_Star_Trek/rust/src/main.rs b/84_Super_Star_Trek/rust/src/main.rs
index 477a0594..1b9a0522 100644
--- a/84_Super_Star_Trek/rust/src/main.rs
+++ b/84_Super_Star_Trek/rust/src/main.rs
@@ -1,7 +1,8 @@
-use std::{io::{stdin, stdout, Write, Read}, process::exit, str::FromStr};
+use std::process::exit;
 
 use model::Galaxy;
 
+mod input;
 mod model;
 mod commands;
 mod view;
@@ -14,104 +15,29 @@ fn main() {
     
     view::enterprise();
     view::intro(&galaxy);
-    let _ = prompt("Press Enter when ready to accept command");
+    let _ = input::prompt("Press Enter when ready to accept command");
 
     view::starting_quadrant(&galaxy.enterprise.quadrant);
     view::short_range_scan(&galaxy);
 
     loop {
-        let command = prompt("Command?");
+        let command = input::prompt("Command?");
         if command.len() == 0 {
             continue;
         }
         match command[0].to_uppercase().as_str() {
             "SRS" => view::short_range_scan(&galaxy),
-            "NAV" => gather_dir_and_speed_then_move(&mut galaxy, command[1..].into()),
-            "SHE" => get_amount_and_set_shields(&mut galaxy, command[1..].into()),
+            "NAV" => commands::gather_dir_and_speed_then_move(&mut galaxy, command[1..].into()),
+            "SHE" => commands::get_amount_and_set_shields(&mut galaxy, command[1..].into()),
             _ => view::print_command_help()
         }
 
         if galaxy.enterprise.destroyed { // todo: also check if stranded
             view::end_game_failure(&galaxy);
+            // todo check if can restart
             break;
         }
+
+        // todo check for victory
     }
 }
-
-fn get_amount_and_set_shields(galaxy: &mut Galaxy, provided: Vec<String>) {
-
-    // todo check for damaged module
-
-    view::energy_available(galaxy.enterprise.total_energy);
-    let value = param_or_prompt_value(&provided, 0, "Number of units to shields", 0, i32::MAX);
-    if value.is_none() {
-        view::shields_unchanged();
-        return;
-    }
-    let value = value.unwrap() as u16;
-    if value > galaxy.enterprise.total_energy {
-        view::ridiculous();
-        view::shields_unchanged();
-        return;
-    }
-
-    galaxy.enterprise.shields = value;
-    view::shields_set(value);
-}
-
-fn gather_dir_and_speed_then_move(galaxy: &mut Galaxy, provided: Vec<String>) {
-
-    let course = param_or_prompt_value(&provided, 0, "Course (1-9)?", 1, 9);
-    if course.is_none() {
-        view::bad_nav();
-        return;
-    }
-
-    let speed = param_or_prompt_value(&provided, 1, "Warp Factor (0-8)?", 0.0, 8.0);
-    if speed.is_none() {
-        view::bad_nav();
-        return;
-    }
-
-    commands::move_klingons_and_fire(galaxy);
-    if galaxy.enterprise.destroyed {
-        return;
-    }
-    commands::move_enterprise(course.unwrap(), speed.unwrap(), galaxy);
-}
-
-fn prompt(prompt_text: &str) -> Vec<String> {
-    let stdin = stdin();
-    let mut stdout = stdout();
-
-    print!("{prompt_text} ");
-    let _ = stdout.flush();
-
-    let mut buffer = String::new();
-    if let Ok(_) = stdin.read_line(&mut buffer) {
-        return buffer.trim_end().split(" ").map(|s| s.to_string()).collect();
-    }
-    Vec::new()
-}
-
-fn prompt_value<T: FromStr + PartialOrd>(prompt_text: &str, min: T, max: T) -> Option<T> {
-    let passed = prompt(prompt_text);
-    if passed.len() != 1 {
-        return None
-    }
-    match passed[0].parse::<T>() {
-        Ok(n) if (n >= min && n <= max) => Some(n),
-        _ => None
-    }
-}
-
-fn param_or_prompt_value<T: FromStr + PartialOrd>(params: &Vec<String>, param_pos: usize, prompt_text: &str, min: T, max: T) -> Option<T> {
-    if params.len() > param_pos {
-        match params[param_pos].parse::<T>() {
-            Ok(n) => Some(n),
-            _ => None
-        }
-    } else {
-        return prompt_value::<T>(prompt_text, min, max);
-    }
-}
\ No newline at end of file