1 files changed, 17 insertions, 0 deletions
diff --git a/src/economy_type.h b/src/economy_type.h
index c5ae9a0d9..48988bb46 100644
--- a/src/economy_type.h
+++ b/src/economy_type.h
@@ -122,6 +122,23 @@ enum ExpensesType {
 	INVALID_EXPENSES      = 0xFF,
 };
 
+/**
+ * Categories of a price bases.
+ */
+enum PriceCategory {
+	PC_NONE,         ///< No category
+	PC_RUNNING,      ///< Price is affected by "vehicle running cost" difficulty setting
+	PC_CONSTRUCTION, ///< Price is affected by "construction cost" difficulty setting
+};
+
+/**
+ * Describes properties of price bases.
+ */
+struct PriceBaseSpec {
+	Money start_price;      ///< Default value at game start, before adding multipliers.
+	PriceCategory category; ///< Price is affected by certain difficulty settings.
+};
+
 /** The "steps" in loan size, in British Pounds! */
 static const int LOAN_INTERVAL = 10000;