initial commit

crates/comet_ecs/src/entity.rs

@@ -0,0 +1,35 @@
+use bit_set::BitSet;
+use crate::ComponentSet;
+
+#[derive(Debug, Clone, PartialEq)]
+pub struct Entity {
+	id: u32,
+	components: BitSet
+}
+
+impl Entity {
+	pub fn new(id: u32) -> Self {
+		let mut components = BitSet::new();
+		components.insert(0);
+		Self {
+			id,
+			components
+		}
+	}
+
+	pub fn id(&self) -> &u32 {
+		&self.id
+	}
+
+	pub(crate) fn add_component(&mut self, component_index: usize) {
+		self.components.insert(component_index);
+	}
+
+	pub(crate) fn remove_component(&mut self, component_index: usize) {
+		self.components.remove(component_index);
+	}
+
+	pub(crate) fn get_components(&self) -> &BitSet {
+		&self.components
+	}
+}