1 files changed, 29 insertions, 0 deletions
diff --git a/src/systems/makefloor.rs b/src/systems/makefloor.rs
new file mode 100644
index 0000000..864f204
--- /dev/null
+++ b/src/systems/makefloor.rs
@@ -0,0 +1,29 @@
+
+
+use specs::{
+	ReadStorage,
+	Write,
+	Entities,
+	System,
+	Join
+};
+
+use super::super::components::{
+	Position
+};
+
+use super::super::resources::{
+	Floor
+};
+
+
+pub struct MakeFloor;
+impl <'a> System<'a> for MakeFloor {
+	type SystemData = (Entities<'a>, Write<'a, Floor>, ReadStorage<'a, Position>);
+	fn run(&mut self, (entities, mut floor, positions): Self::SystemData) {
+		floor.cells.clear();
+		for (ent, pos) in (&entities, &positions).join() {
+			floor.cells.entry(*pos).or_insert(Vec::new()).push(ent);
+		}
+	}
+}