(svn r10485) -Codechange: add a callback mechanism to determine whether building an industry is allowed at a given location.

src/newgrf_spritegroup.h

@@ -224,6 +224,11 @@ struct ResolverObject {
 			Industry *ind;
 			IndustryGfx gfx;
 		} industry;
+		struct {
+			TileIndex tile;
+			const IndustrySpec *spec;
+			uint itspec_index;
+		} industry_location;
 		struct {
 			const struct CargoSpec *cs;
 		} cargo;