1 files changed, 37 insertions, 0 deletions
diff --git a/src/systems/registernew.rs b/src/systems/registernew.rs
new file mode 100644
index 0000000..c6b18fa
--- /dev/null
+++ b/src/systems/registernew.rs
@@ -0,0 +1,37 @@
+
+use std::collections::HashSet;
+
+use specs::{
+	ReadStorage,
+	Write,
+	Entities,
+	System,
+	Join
+};
+
+use crate::components::{
+	Position,
+	New
+};
+
+use crate::resources::{
+	Ground
+};
+
+
+#[derive(Default)]
+pub struct RegisterNew;
+impl <'a> System<'a> for RegisterNew {
+	type SystemData = (
+		Entities<'a>,
+		Write<'a, Ground>,
+		ReadStorage<'a, Position>,
+		ReadStorage<'a, New>,
+	);
+	fn run(&mut self, (entities, mut ground, positions, new): Self::SystemData) {
+		for (ent, pos, _new) in (&entities, &positions, &new).join() {
+			ground.cells.entry(pos.pos).or_insert(HashSet::new()).insert(ent);
+		}
+	}
+}
+