Add PathFinder trait

factorio-core/src/visualize/mod.rs

@@ -26,6 +26,7 @@ pub trait Visualize {
     }
 }
 
+#[derive(Debug, Clone, Copy)]
 pub enum Symbol {
     Arrow(Direction),
     ArrowEnter(Direction),
@@ -131,6 +132,16 @@ impl Visualization {
         }
     }
 
+    pub fn overlay_visualization(&mut self, other: &Self) {
+        self.size = Position::new(
+            PositionType::max(self.size.x, other.size.x),
+            PositionType::max(self.size.y, other.size.y),
+        );
+
+        self.symbols
+            .extend(other.symbols.iter().map(|(&k, &v)| (k, v)));
+    }
+
     pub fn size(&self) -> Position {
         self.size
     }