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-rw-r--r--src/game.rs3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/game.rs b/src/game.rs
index 335e9da..a913596 100644
--- a/src/game.rs
+++ b/src/game.rs
@@ -25,6 +25,9 @@ pub fn new() -> State {
Err(e) => panic!("Failed to parse demo map: {}", e.description()),
};
+ // allow only orthogonal maps
+ assert_eq!(demo_map.orientation, tiled::Orientation::Orthogonal);
+
return State {
running: true,
map: demo_map