Show neighbor cells if boats can't touch

rust/cli_player/src/main.rs

@@ -19,7 +19,9 @@ use sea_battle_backend::data::GameRules;
 async fn run_app<B: Backend>(terminal: &mut Terminal<B>) -> Result<(), Box<dyn Error>> {
     // Temporary code
     // let res = configure_game_rules::configure_play_rules(GameRules::default(), terminal)?; // select_bot_type::select_bot_type(terminal)?;
-    let res = set_boats_layout::set_boat_layout(&GameRules::default(), terminal)?; // select_bot_type::select_bot_type(terminal)?;
+    let mut rules = GameRules::default();
+    rules.boats_can_touch = true;
+    let res = set_boats_layout::set_boat_layout(&rules, terminal)?; // select_bot_type::select_bot_type(terminal)?;
     Err(io::Error::new(
         ErrorKind::Other,
         format!("result: {:?}", res),

rust/cli_player/src/ui_screens/set_boats_layout.rs

@@ -146,7 +146,7 @@ fn ui<B: Backend>(
     }
 
     let other_boats = ColoredCells {
-        color: Color::DarkGray,
+        color: Color::Gray,
         cells: other_boats_cells,
     };
 
@@ -160,7 +160,7 @@ fn ui<B: Backend>(
         legend.push_str("Enter    confirm layout");
     }
 
-    let game_map_widget = GameMapWidget::new(rules)
+    let mut game_map_widget = GameMapWidget::new(rules)
         .set_default_empty_char(' ')
         .add_colored_cells(current_boat)
         .add_colored_cells(other_boats)
@@ -174,6 +174,21 @@ fn ui<B: Backend>(
         })
         .set_legend(legend);
 
+    // Colorate neighbors if boats can not touch
+    if !rules.boats_can_touch {
+        let mut boats_neighbors_cells = vec![];
+        for boat in &model.layout.0 {
+            for pos in boat.neighbor_coordinates(rules) {
+                boats_neighbors_cells.push(pos);
+            }
+        }
+
+        game_map_widget = game_map_widget.add_colored_cells(ColoredCells {
+            color: Color::Rgb(30, 30, 30),
+            cells: boats_neighbors_cells,
+        });
+    }
+
     let (w, h) = game_map_widget.estimated_size();
     let area = centered_rect_size(w, h, &f.size());
     f.render_widget(game_map_widget, area);

rust/sea_battle_backend/src/data/boats_layout.rs

@@ -318,7 +318,7 @@ impl BoatsLayout {
                         .iter()
                         .any(|c| boat_j_coords.contains(c))
                 {
-                    errors.push("A collision between two boats has been detected!");
+                    errors.push("Two boats are touching!");
                 }
             }
         }