easy to use CollisionPair on iter

Author: just-do-halee

examples/scenarios/car_shoot.rs

@@ -132,7 +132,8 @@ fn game_logic(engine: &mut Engine, game_state: &mut GameState) {
         if !event.pair.one_starts_with("marble") {
             continue;
         }
-        for label in [event.pair.0, event.pair.1] {
+
+        for label in event.pair {
             engine.sprites.remove(&label);
             if label.starts_with("marble") {
                 game_state.marble_labels.push(label);

src/physics.rs

@@ -83,6 +83,21 @@ impl CollisionPair {
         let b_matches = self.1.starts_with(&text);
         (a_matches && !b_matches) || (!a_matches && b_matches)
     }
+
+    pub fn array(&self) -> [&str; 2] {
+        [self.0.as_str(), self.1.as_str()]
+    }
+    pub fn array_mut(&mut self) -> [&mut String; 2] {
+        [&mut self.0, &mut self.1]
+    }
+}
+
+impl IntoIterator for CollisionPair {
+    type Item = String;
+    type IntoIter = std::array::IntoIter<Self::Item, 2>;
+    fn into_iter(self) -> Self::IntoIter {
+        [self.0, self.1].into_iter()
+    }
 }
 
 impl PartialEq for CollisionPair {