implemented setting shields

84_Super_Star_Trek/rust/src/main.rs

@@ -27,6 +27,7 @@ fn main() {
         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()),
             _ => view::print_command_help()
         }
 
@@ -37,6 +38,27 @@ fn main() {
     }
 }
 
+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);

84_Super_Star_Trek/rust/src/view.rs

@@ -174,3 +174,20 @@ pub fn insuffient_warp_energy(warp_speed: f32) {
 pub fn divert_energy_from_shields() {
     println!("Shield Control supplies energy to complete the maneuver.")
 }
+
+pub fn energy_available(total_energy: u16) {
+    println!("Energy available = {{{total_energy}}}")
+}
+
+pub fn shields_unchanged() {
+    println!("<SHIELDS UNCHANGED>")
+}
+
+pub fn ridiculous() {
+    println!("Shield Control reports, 'This is not the Federation Treasury.'")
+}
+
+pub fn shields_set(value: u16) {
+    println!("Deflector control room report:
+  'Shields now at {value} units per your command.'")
+}

84_Super_Star_Trek/rust/tasks.md

@@ -7,9 +7,9 @@ Started after movement and display of stats was finished (no energy management o
 - [x] add intro
 - [x] add entering (and starting in) sector headers
 - [x] conditions and danger messages
-- [ ] remove energy on move
-- [ ] shields
-    - [ ] shield control
+- [x] remove energy on move
+- [x] shields
+    - [x] shield control
     - [ ] shield hit absorption
 - [ ] subsystem damage
     - and support for reports