Add: [Script] IndustryType::ResolveNewGRFID to resolve industry id from grfid and grf_local_id

src/script/api/ai_changelog.hpp

@@ -17,6 +17,7 @@
  *
  * This version is not yet released. The following changes are not set in stone yet.
  *
+ * \li AIIndustryType::ResolveNewGRFID
  * \li AIObjectType::ResolveNewGRFID
  *
  * \b 12.0

src/script/api/game_changelog.hpp

@@ -17,6 +17,7 @@
  *
  * This version is not yet released. The following changes are not set in stone yet.
  *
+ * \li GSIndustryType::ResolveNewGRFID
  * \li GSObjectType::ResolveNewGRFID
  *
  * \b 12.0

src/script/api/script_industrytype.cpp

@@ -154,3 +154,11 @@
 
 	return (::GetIndustrySpec(industry_type)->behaviour & INDUSTRYBEH_AI_AIRSHIP_ROUTES) != 0;
 }
+
+/* static */ IndustryType ScriptIndustryType::ResolveNewGRFID(uint32 grfid, uint16 grf_local_id)
+{
+	EnforcePrecondition(INVALID_INDUSTRYTYPE, IsInsideBS(grf_local_id, 0x00, NUM_INDUSTRYTYPES_PER_GRF));
+
+	grfid = BSWAP32(grfid); // Match people's expectations.
+	return _industry_mngr.GetID(grf_local_id, grfid);
+}

src/script/api/script_industrytype.hpp

@@ -181,6 +181,15 @@ public:
 	 * @return True when this type has a dock.
 	 */
 	static bool HasDock(IndustryType industry_type);
+
+	/**
+	 * Get a specific industry-type from a grf.
+	 * @param grf_id The ID of the NewGRF.
+	 * @param grf_local_id The ID of the industry, local to the NewGRF.
+	 * @pre 0x00 <= grf_local_id < NUM_INDUSTRYTYPES_PER_GRF.
+	 * @return the industry-type ID, local to the current game (this diverges from the grf_local_id).
+	 */
+	static IndustryType ResolveNewGRFID(uint32 grfid, uint16 grf_local_id);
 };
 
 #endif /* SCRIPT_INDUSTRYTYPE_HPP */