(svn r27730) -Change: Split openttd.grf into openttd.grf and orig_extra.grf

  openttd.grf is now always loaded and provides all extra graphics in case the (possibly outdated) baseset does not.
  orig_extra.grf contains graphics specific to the original baseset only.

3 files changed, 22 insertions, 11 deletions

diff --git a/src/gfxinit.cpp b/src/gfxinit.cpp
index 10bc0afa1..23172bdd5 100644
--- a/src/gfxinit.cpp
+++ b/src/gfxinit.cpp
@@ -197,31 +197,41 @@ static void LoadSpriteTables()
 	InitializeUnicodeGlyphMap();
 
 	/*
-	 * Load the base NewGRF with OTTD required graphics as first NewGRF.
+	 * Load the base and extra NewGRF with OTTD required graphics as first NewGRF.
 	 * However, we do not want it to show up in the list of used NewGRFs,
 	 * so we have to manually add it, and then remove it later.
 	 */
 	GRFConfig *top = _grfconfig;
-	GRFConfig *master = new GRFConfig(used_set->files[GFT_EXTRA].filename);
+
+	/* Default extra graphics */
+	GRFConfig *master = new GRFConfig("OPENTTD.GRF");
+	master->palette |= GRFP_GRF_DOS;
+	FillGRFDetails(master, false, BASESET_DIR);
+	ClrBit(master->flags, GCF_INIT_ONLY);
+
+	/* Baseset extra graphics */
+	GRFConfig *extra = new GRFConfig(used_set->files[GFT_EXTRA].filename);
 
 	/* We know the palette of the base set, so if the base NewGRF is not
 	 * setting one, use the palette of the base set and not the global
 	 * one which might be the wrong palette for this base NewGRF.
 	 * The value set here might be overridden via action14 later. */
 	switch (used_set->palette) {
-		case PAL_DOS:     master->palette |= GRFP_GRF_DOS;     break;
-		case PAL_WINDOWS: master->palette |= GRFP_GRF_WINDOWS; break;
+		case PAL_DOS:     extra->palette |= GRFP_GRF_DOS;     break;
+		case PAL_WINDOWS: extra->palette |= GRFP_GRF_WINDOWS; break;
 		default: break;
 	}
-	FillGRFDetails(master, false, BASESET_DIR);
+	FillGRFDetails(extra, false, BASESET_DIR);
+	ClrBit(extra->flags, GCF_INIT_ONLY);
 
-	ClrBit(master->flags, GCF_INIT_ONLY);
-	master->next = top;
+	extra->next = top;
+	master->next = extra;
 	_grfconfig = master;
 
-	LoadNewGRF(SPR_NEWGRFS_BASE, i);
+	LoadNewGRF(SPR_NEWGRFS_BASE, i, 2);
 
 	/* Free and remove the top element. */
+	delete extra;
 	delete master;
 	_grfconfig = top;
 }
diff --git a/src/newgrf.cpp b/src/newgrf.cpp
index 7b862149d..e0246bdf6 100644
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -9203,8 +9203,9 @@ static void AfterLoadGRFs()
  * Load all the NewGRFs.
  * @param load_index The offset for the first sprite to add.
  * @param file_index The Fio index of the first NewGRF to load.
+ * @param num_baseset Number of NewGRFs at the front of the list to look up in the baseset dir instead of the newgrf dir.
  */
-void LoadNewGRF(uint load_index, uint file_index)
+void LoadNewGRF(uint load_index, uint file_index, uint num_baseset)
 {
 	/* In case of networking we need to "sync" the start values
 	 * so all NewGRFs are loaded equally. For this we use the
@@ -9270,7 +9271,7 @@ void LoadNewGRF(uint load_index, uint file_index)
 			if (c->status == GCS_DISABLED || c->status == GCS_NOT_FOUND) continue;
 			if (stage > GLS_INIT && HasBit(c->flags, GCF_INIT_ONLY)) continue;
 
-			Subdirectory subdir = slot == file_index ? BASESET_DIR : NEWGRF_DIR;
+			Subdirectory subdir = slot < file_index + num_baseset ? BASESET_DIR : NEWGRF_DIR;
 			if (!FioCheckFileExists(c->filename, subdir)) {
 				DEBUG(grf, 0, "NewGRF file is missing '%s'; disabling", c->filename);
 				c->status = GCS_NOT_FOUND;
diff --git a/src/newgrf.h b/src/newgrf.h
index 51b00da7c..1ab55dd04 100644
--- a/src/newgrf.h
+++ b/src/newgrf.h
@@ -183,7 +183,7 @@ extern GRFLoadedFeatures _loaded_newgrf_features;
 byte GetGRFContainerVersion();
 
 void LoadNewGRFFile(struct GRFConfig *config, uint file_index, GrfLoadingStage stage, Subdirectory subdir);
-void LoadNewGRF(uint load_index, uint file_index);
+void LoadNewGRF(uint load_index, uint file_index, uint num_baseset);
 void ReloadNewGRFData(); // in saveload/afterload.cpp
 void ResetNewGRFData();
 void ResetPersistentNewGRFData();