(svn r17327) -Codechange: Allow external use of GetEngineCategoryName().

src/engine.cpp

@@ -30,6 +30,7 @@
 #include "vehicle_func.h"
 #include "settings_type.h"
 #include "core/pool_func.hpp"
+#include "engine_gui.h"
 
 #include "table/strings.h"
 #include "table/engines.h"
@@ -614,8 +615,6 @@ CommandCost CmdWantEnginePreview(TileIndex tile, DoCommandFlag flags, uint32 p1,
 	return CommandCost();
 }
 
-StringID GetEngineCategoryName(EngineID engine);
-
 static void NewVehicleAvailable(Engine *e)
 {
 	Vehicle *v;

src/engine_gui.cpp

@@ -27,6 +27,10 @@
 #include "table/strings.h"
 #include "table/sprites.h"
 
+/** Return the category of an engine.
+ * @param engine Engine to examine.
+ * @return String describing the category ("road veh", "train". "airplane", or "ship") of the engine.
+ */
 StringID GetEngineCategoryName(EngineID engine)
 {
 	switch (Engine::Get(engine)->type) {

src/engine_gui.h

@@ -20,6 +20,7 @@ typedef int CDECL EngList_SortTypeFunction(const void*, const void*); ///< argum
 void EngList_Sort(GUIEngineList *el, EngList_SortTypeFunction compare);  ///< qsort of the engine list
 void EngList_SortPartial(GUIEngineList *el, EngList_SortTypeFunction compare, uint begin, uint num_items); ///< qsort of specified portion of the engine list
 
+StringID GetEngineCategoryName(EngineID engine);
 void DrawVehicleEngine(int x, int y, EngineID engine, SpriteID pal);
 
 #endif /* ENGINE_GUI_H */