moved nav function bulk to commands module

84_Super_Star_Trek/rust/src/commands.rs

@@ -1,4 +1,4 @@
-use crate::model::{Galaxy, Pos, SectorStatus};
+use crate::model::{Galaxy, Pos, SectorStatus, COURSES};
 
 pub fn short_range_scan(model: &Galaxy) {
     let quadrant = &model.quadrants[model.enterprise.sector.as_index()];
@@ -22,3 +22,49 @@ pub fn short_range_scan(model: &Galaxy) {
     }
     println!("{:-^33}", "");
 }
+
+pub fn move_enterprise(course: u8, warp_speed: f32, galaxy: &mut Galaxy) {
+    let distance = (warp_speed * 8.0) as i8;
+    let galaxy_pos = galaxy.enterprise.quadrant * 8u8 + galaxy.enterprise.sector;
+
+    let (dx, dy): (i8, i8) = COURSES[(course - 1) as usize];
+
+    let mut nx = (galaxy_pos.0 as i8) + dx * distance;
+    let mut ny = (galaxy_pos.1 as i8) + dy * distance;
+
+    let mut hit_edge = false;
+    if nx < 0 {
+        nx = 0;
+        hit_edge = true;
+    }
+    if ny < 0 {
+        ny = 0;
+        hit_edge = true;
+    }
+    if nx >= 64 {
+        ny = 63;
+        hit_edge = true;
+    }
+    if nx >= 64 {
+        ny = 63;
+        hit_edge = true;
+    }
+    
+    let new_quadrant = Pos((nx / 8) as u8, (ny / 8) as u8);
+    let new_sector = Pos((nx % 8) as u8, (ny % 8) as u8);
+
+    if hit_edge {
+        println!("Lt. Uhura report message from Starfleet Command:
+        'Permission to attempt crossing of galactic perimeter
+        is hereby *Denied*. Shut down your engines.'
+      Chief Engineer Scott reports, 'Warp engines shut down
+        at sector {} of quadrant {}.'", new_quadrant, new_sector);
+    }
+
+    galaxy.enterprise.quadrant = new_quadrant;
+    galaxy.enterprise.sector = new_sector;
+        
+    // if new_quadrant isnt old quadrant print intro
+
+    short_range_scan(&galaxy)
+}

84_Super_Star_Trek/rust/src/main.rs

@@ -1,8 +1,6 @@
 use std::{io::{stdin, stdout, Write}, process::exit, str::FromStr};
 
-use model::{Galaxy, Pos};
-
-use crate::model::DIRECTIONS;
+use model::Galaxy;
 
 mod model;
 mod commands;
@@ -12,7 +10,7 @@ fn main() {
     .expect("Error setting Ctrl-C handler");
 
     let mut galaxy = Galaxy::generate_new();
-    // init ops, starting state and notes
+    // init options, starting state and notes
     commands::short_range_scan(&galaxy);
 
     loop {
@@ -21,18 +19,14 @@ fn main() {
             "NAV" => gather_dir_and_speed_then_move(&mut galaxy),
             _ => print_command_help()
         }
-
-        // process the next command, based on it render something or update the galaxy or whatever
-        // this would be: read command, and based on it run dedicated function
-        // the function might get passed a mutable reference to the galaxy
     }
 }
 
 fn gather_dir_and_speed_then_move(galaxy: &mut Galaxy) {
     const BAD_NAV: &str = "   Lt. Sulu reports, 'Incorrect course data, sir!'";
 
-    let dir = prompt_value::<u8>("Course (1-9)?", 1, 9);
-    if dir.is_none() {
+    let course = prompt_value::<u8>("Course (1-9)?", 1, 9);
+    if course.is_none() {
         println!("{}", BAD_NAV); 
         return;
     }
@@ -43,48 +37,7 @@ fn gather_dir_and_speed_then_move(galaxy: &mut Galaxy) {
         return;
     }
 
-    let distance = (speed.unwrap() * 8.0) as i8;
-    let galaxy_pos = galaxy.enterprise.quadrant * 8u8 + galaxy.enterprise.sector;
-
-    let (dx, dy): (i8, i8) = DIRECTIONS[(dir.unwrap() - 1) as usize];
-    let mut nx = (galaxy_pos.0 as i8) + dx * distance;
-    let mut ny = (galaxy_pos.1 as i8) + dy * distance;
-
-    let mut hit_edge = false;
-    if nx < 0 {
-        nx = 0;
-        hit_edge = true;
-    }
-    if ny < 0 {
-        ny = 0;
-        hit_edge = true;
-    }
-    if nx >= 64 {
-        ny = 63;
-        hit_edge = true;
-    }
-    if nx >= 64 {
-        ny = 63;
-        hit_edge = true;
-    }
-    
-    let new_quadrant = Pos((nx / 8) as u8, (ny / 8) as u8);
-    let new_sector = Pos((nx % 8) as u8, (ny % 8) as u8);
-
-    if hit_edge {
-        println!("Lt. Uhura report message from Starfleet Command:
-        'Permission to attempt crossing of galactic perimeter
-        is hereby *Denied*. Shut down your engines.'
-      Chief Engineer Scott reports, 'Warp engines shut down
-        at sector {} of quadrant {}.'", new_quadrant, new_sector);
-    }
-
-    galaxy.enterprise.quadrant = new_quadrant;
-    galaxy.enterprise.sector = new_sector;
-        
-    // if new_quadrant isnt old quadrant print intro
-
-    commands::short_range_scan(&galaxy)
+    commands::move_enterprise(course.unwrap(), speed.unwrap(), galaxy);
 }
 
 fn prompt(prompt_text: &str) -> String {

84_Super_Star_Trek/rust/src/model.rs

@@ -38,7 +38,7 @@ impl Display for Pos {
     }
 }
 
-pub const DIRECTIONS : [(i8, i8); 8] = [
+pub const COURSES : [(i8, i8); 8] = [
     (1, 0),
     (1, -1),
     (0, -1),