(svn r9667) -Feature: Add the concept of cities. A (configurable) proportion of towns can

start off larger, and will grow twice as quickly as other towns. They can also
be placed specifically in the scenario editor. Thanks to TheJosh for the
initial patch and the idea.

src/town.h

@@ -141,6 +141,9 @@ struct Town {
 	/* Index in town array */
 	TownID index;
 
+	/* If this is a larger town, and should grow more quickly. */
+	bool larger_town;
+
 	/* NOSAVE: UpdateTownRadius updates this given the house count. */
 	uint16 radius[5];
 
@@ -181,6 +184,12 @@ struct HouseSpec {
 	const struct GRFFile *grffile;     ///< grf file that introduced this house
 };
 
+enum TownSizeMode {
+	TSM_RANDOM,
+	TSM_FIXED,
+	TSM_CITY
+};
+
 VARDEF HouseSpec _house_specs[HOUSE_MAX];
 
 uint32 GetWorldPopulation();
@@ -189,7 +198,7 @@ void UpdateTownVirtCoord(Town *t);
 void InitializeTown();
 void ShowTownViewWindow(TownID town);
 void ExpandTown(Town *t);
-Town *CreateRandomTown(uint attempts, uint size_mode);
+Town *CreateRandomTown(uint attempts, TownSizeMode mode, uint size);
 
 enum {
 	ROAD_REMOVE = 0,