1 files changed, 11 insertions, 0 deletions
diff --git a/engine/card/range.go b/engine/card/range.go
new file mode 100644
index 0000000..3c6a5c9
--- /dev/null
+++ b/engine/card/range.go
@@ -0,0 +1,11 @@
+package card
+
+type RangeValue int
+
+const NoMinimumRange = RangeValue(0)
+const NoMaximumRange = RangeValue(10)
+
+type Range struct {
+	Min RangeValue
+	Max RangeValue
+}