fix: got back to the old render_scene_2d because my Camera2D way is kind of borked.

crates/comet_structs/src/sparse_set.rs

@@ -84,4 +84,59 @@ impl SparseSet {
 			None
 		}
 	}
-}
+}
+
+/*#[derive(Debug, Clone)]
+pub struct SparseSet {
+	sparse: Vec<Option<usize>>,
+	dense: Column,
+}
+
+impl SparseSet {
+	pub fn new<T: 'static>(capacity: usize) -> Self {
+		Self {
+			sparse: Vec::new(),
+			dense: Column::new::<T>(capacity),
+		}
+	}
+
+	pub fn insert<T: 'static>(&mut self, index: usize, value: T) {
+		if index >= self.sparse.len() {
+			self.sparse.resize(index + 1, None);
+		}
+		self.sparse[index] = Some(self.dense.data.len());
+		self.dense.push(value);
+	}
+
+	pub fn remove<T: 'static>(&mut self, index: usize) -> Option<T>{
+		if let Some(sparse_index) = self.sparse.get(index).and_then(|x| x.as_ref()) {
+			let dense_index = *sparse_index;
+			let last_index = self.dense.data.len() - 1;
+			if dense_index != last_index {
+				self.dense.swap(dense_index, last_index);
+				if let Some(sparse) = self.sparse.get_mut(last_index) {
+					*sparse = Some(dense_index);
+				}
+			}
+			self.sparse[index] = None;
+			self.dense.remove::<T>(last_index)
+		}
+		else {
+			None
+		}
+	}
+
+	pub fn get<T: 'static>(&self, index: usize) -> Option<&T> {
+		match self.sparse.get(index).and_then(|x| x.as_ref()) {
+			Some(sparse_index) => self.dense.get::<T>(*sparse_index),
+			None => None,
+		}
+	}
+
+	pub fn get_mut<T: 'static>(&mut self, index: usize) -> Option<&mut T> {
+		match self.sparse.get(index).and_then(|x| x.as_ref()) {
+			Some(sparse_index) => self.dense.get_mut::<T>(*sparse_index),
+			None => None,
+		}
+	}
+}*/