feat: improved path rendering

zauberschule/src/graph.rs

@@ -22,6 +22,8 @@ pub struct Graph {
     nodes: Slab<Node>,
     start: usize,
     end: usize,
+
+    maps: Vec<Vec<Vec<char>>>,
 }
 
 #[derive(Debug)]
@@ -42,7 +44,10 @@ pub enum Action {
     ChangeFloor(usize, usize),
 }
 
-pub struct Actions(pub Vec<Action>);
+pub struct Actions {
+    pub actions: Vec<Action>,
+    pub maps: Vec<Vec<Vec<char>>>,
+}
 
 #[derive(Debug, Clone)]
 struct DijkstraNode {
@@ -78,74 +83,53 @@ impl DijkstraNode {
 
 impl Display for Actions {
     fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
-        let mut x1 = usize::MAX;
-        let mut x2 = 0usize;
-        let mut y1 = usize::MAX;
-        let mut y2 = 0usize;
-
-        for action in self.0.iter() {
-            match action {
-                Action::Start(x, y)
-                | Action::End(x, y)
-                | Action::Up(x, y)
-                | Action::Down(x, y)
-                | Action::Right(x, y)
-                | Action::Left(x, y)
-                | Action::ChangeFloor(x, y) => {
-                    let x_pos = x.to_owned();
-                    let y_pos = y.to_owned();
-
-                    if x_pos < x1 {
-                        x1 = x_pos;
-                    }
-                    if x_pos > x2 {
-                        x2 = x_pos;
-                    }
-                    if y_pos < y1 {
-                        y1 = y_pos;
-                    }
-                    if y_pos > y2 {
-                        y2 = y_pos;
-                    }
-                }
-            }
-        }
-
-        let mut layers = vec![vec![vec![' '; x2 - x1 + 1]; y2 - y1 + 1]; 2];
         let mut z = 0usize;
         let mut start = true;
 
-        for action in self.0.iter() {
+        let mut maps = self.maps.to_owned();
+
+        for action in self.actions.iter() {
             match action {
                 Action::Start(x, y) => {
-                    layers[z][y - y1][x - x1] = 'A';
+                    maps[z][y.to_owned()][x.to_owned()] = 'A';
                 }
                 Action::End(x, y) => {
-                    layers[z][y - y1][x - x1] = 'B';
+                    maps[z][y.to_owned()][x.to_owned()] = 'B';
                     start = false;
                 }
                 Action::Up(x, y) => {
-                    layers[z][y - y1][x - x1] = '↑';
+                    maps[z][y.to_owned()][x.to_owned()] = '↑';
                     start = false;
                 }
                 Action::Down(x, y) => {
-                    layers[z][y - y1][x - x1] = '↓';
+                    maps[z][y.to_owned()][x.to_owned()] = '↓';
                     start = false;
                 }
                 Action::Left(x, y) => {
-                    layers[z][y - y1][x - x1] = '←';
+                    maps[z][y.to_owned()][x.to_owned()] = '←';
                     start = false;
                 }
                 Action::Right(x, y) => {
-                    layers[z][y - y1][x - x1] = '→';
+                    maps[z][y.to_owned()][x.to_owned()] = '→';
                     start = false;
                 }
                 Action::ChangeFloor(x, y) => {
                     if !start {
-                        layers[z][y - y1][x - x1] = '!';
+                        maps[z][y.to_owned()][x.to_owned()] = '!';
                     }
                     z = (z + 1) % 2;
-                    layers[z][y - y1][x - x1] = '!';
+                    maps[z][y.to_owned()][x.to_owned()] = '!';
+                }
+            }
+        }
+
+        for layer in maps.iter_mut() {
+            for line in layer {
+                for i in 1..(line.len() * 2) {
+                    if (i % 2) == 0 {
+                        continue;
+                    }
+                    line.insert(i, ' ');
                 }
             }
         }
@@ -153,12 +137,12 @@ impl Display for Actions {
         write!(
             f,
             "Layer 0:\n{}\n\nLayer 1:\n{}",
-            layers[0]
+            maps[0]
                 .iter()
                 .map(|chrs| String::from_iter(chrs))
                 .collect::<Vec<String>>()
                 .join("\n"),
-            layers[1]
+            maps[1]
                 .iter()
                 .map(|chrs| String::from_iter(chrs))
                 .collect::<Vec<String>>()
@@ -167,12 +151,29 @@ impl Display for Actions {
     }
 }
 
+impl Actions {
+    pub fn seconds(&self) -> usize {
+        let mut seconds = 0usize;
+
+        for action in self.actions.iter() {
+            seconds += match action {
+                Action::ChangeFloor(..) => 3,
+                Action::Start(..) | Action::End(..) => 0,
+                _ => 1,
+            };
+        }
+
+        seconds
+    }
+}
+
 impl Graph {
     fn default() -> Self {
         Self {
             nodes: Slab::new(),
             start: 0,
             end: 0,
+            maps: Vec::new(),
         }
     }
 
@@ -181,36 +182,42 @@ impl Graph {
 
         let file_content = std::fs::read_to_string(path)?;
 
-        // Split the raw content into two vectors of vectors of MapNodes
+        graph.maps = file_content
-        // Each vector represents a map layer that's split into rows.
-        let maps = file_content
             .split_once('\n')
             .unwrap()
             .1
             .split("\n\n")
+            .map(|block| block.lines().map(|str| str.chars().collect()).collect())
+            .collect();
+
+        // Split the raw content into two vectors of vectors of MapNodes
+        // Each vector represents a map layer that's split into rows.
+        let maps = graph
+            .maps
+            .iter()
             .enumerate()
             .map(|(z, block)| {
                 block
-                    .lines()
+                    .iter()
                     .enumerate()
                     .map(|(y, line)| {
-                        line.chars()
+                        line.iter()
                             .enumerate()
                             .map(|(x, c)| match c {
                                 '#' => MapNode::Wall,
                                 '.' | 'A' | 'B' => {
                                     let id = graph.nodes.insert(Node::new(x, y, z));
 
-                                    if c == 'A' {
+                                    if c.to_owned() == 'A' {
                                         graph.start = id;
                                     }
-                                    if c == 'B' {
+                                    if c.to_owned() == 'B' {
                                         graph.end = id;
                                     }
 
                                     MapNode::Floor(id)
                                 }
-                                c => MapNode::Unknown(c),
+                                c => MapNode::Unknown(c.to_owned()),
                             })
                             .collect()
                     })
@@ -360,6 +367,9 @@ impl Graph {
 
         actions.push(Action::End(x, y));
 
-        Ok(Actions(actions))
+        Ok(Actions {
+            actions,
+            maps: self.maps.clone(),
+        })
     }
 }

zauberschule/src/main.rs

@@ -22,7 +22,11 @@ fn main() -> Result<()> {
     let graph = Graph::new(Path::new(&args.file))?;
     let path = graph.dijkstra()?;
     let actions = graph.path_to_actions(&path)?;
-    println!("{}", actions);
+    println!("{}\n", actions);
+    println!(
+        "Ron needs {} seconds to travel from A to B.",
+        actions.seconds()
+    );
 
     Ok(())
 }