Add PathFinder trait

factorio-core/src/position.rs

@@ -67,12 +67,6 @@ impl std::ops::Sub for Position {
     }
 }
 
-impl From<(i32, i32)> for Position {
-    fn from(value: (i32, i32)) -> Self {
-        Position::new(value.0, value.1)
-    }
-}
-
 impl std::ops::Mul<i32> for Position {
     type Output = Position;
 
@@ -91,3 +85,9 @@ impl std::ops::Mul<Position> for i32 {
         rhs
     }
 }
+
+impl From<(PositionType, PositionType)> for Position {
+    fn from(value: (PositionType, PositionType)) -> Self {
+        Self::new(value.0, value.1)
+    }
+}

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
     }