Snap rooms to the grid

1 files changed, 10 insertions, 2 deletions

diff --git a/src/tool/room_tool.rs b/src/tool/room_tool.rs
index 8288c97..6a9ad55 100644
--- a/src/tool/room_tool.rs
+++ b/src/tool/room_tool.rs
@@ -29,7 +29,11 @@ impl Tool for RoomTool {
         let mouse_pos_m = transform.point_px_to_m(rl.get_mouse_position());
         // Update the currently drawn rectangle, if it exists
         if let Some((_, ref mut pos2)) = &mut self.unfinished_rect {
-            *pos2 = mouse_pos_m;
+            let snapped_mouse_pos = Vector2::new(
+                math::round(mouse_pos_m.x, 0.5),
+                math::round(mouse_pos_m.y, 0.5),
+            );
+            *pos2 = snapped_mouse_pos;
         }
 
         // Start or finish drawing the currently unfinished rectangle
@@ -38,7 +42,11 @@ impl Tool for RoomTool {
                 self.room_rects.push(math::bounding_rect(pos1, pos2));
                 self.unfinished_rect = None;
             } else {
-                self.unfinished_rect = Some((mouse_pos_m, mouse_pos_m))
+                let snapped_mouse_pos = Vector2::new(
+                    math::round(mouse_pos_m.x, 0.5),
+                    math::round(mouse_pos_m.y, 0.5),
+                );
+                self.unfinished_rect = Some((snapped_mouse_pos, snapped_mouse_pos))
             }
         }