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authorGriffin Smith <root@gws.fyi>2019-11-30T20·00-0500
committerGriffin Smith <root@gws.fyi>2019-11-30T20·00-0500
commit97a5c61f28ba98728bab390e0ea745edfbea7103 (patch)
tree25304c30990cffb5756f44c79542edf9dd2e5ac6 /src/Xanthous/Data.hs
parent310ea90985adcb6d9efe2ab05c67a235c2fb0ea2 (diff)
Fix an injectivity issue with saving the game
Fix an injectivity issue with JSON-encoding the entity map that was
causing the game saving to not properly round-trip. As part of this,
there's a refactor to the internals of the entity map to use sets
instead of vectors, which should also get us a nice perf boost.
Diffstat (limited to 'src/Xanthous/Data.hs')
-rw-r--r--src/Xanthous/Data.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/Xanthous/Data.hs b/src/Xanthous/Data.hs
index fdeb71beb5eb..dfad2cffd392 100644
--- a/src/Xanthous/Data.hs
+++ b/src/Xanthous/Data.hs
@@ -115,7 +115,7 @@ type Position = Position' Int
 
 instance Arbitrary a => Arbitrary (Position' a) where
   arbitrary = genericArbitrary
-  shrink = genericShrink
+  shrink (Position px py) = Position <$> shrink px <*> shrink py
 
 
 instance Num a => Semigroup (Position' a) where