cpp/openttd-patchpack/source Changeset - r6868:aab228767f55

Changeset - r6868:aab228767f55

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belugas - 17 years ago 2007-06-12 00:49:50
belugas@openttd.org

(svn r10108) -Codechange: implement variable 0x60 (Get industry tile ID at offset) for industries.
It is exposed for for industry tiles who will reuse it too, for variable 0x62.

2 files changed with 49 insertions and 10 deletions:

src/newgrf_industries.cpp

src/newgrf_industries.h

0 comments (0 inline, 0 general)

src/newgrf_industries.cpp

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@@ @@ -8,6 +8,7 @@ @@
 #include "functions.h"
 #include "macros.h"
 #include "industry.h"
 #include "industry_map.h"
 #include "newgrf.h"
 #include "newgrf_callbacks.h"
 #include "newgrf_spritegroup.h"
@@ @@ -59,6 +60,51 @@ static uint GetClosestWaterDistance(Tile @@
 	return best_dist;
+}
 /** Make an analysis of a tile and check for its belonging to the same
  * industry, and/or the same grf file
  * @param new_tile TileIndex of the tile to query
  * @param old_tile TileINdex of teh reference tile
  * @param i Industry to which old_tile belongs to
  * @return value encoded as per NFO specs */
 uint32 GetIndustryIDAtOffset(TileIndex new_tile, TileIndex old_tile, const Industry *i)
+{
 	if (IsTileType(new_tile, MP_INDUSTRY)) {  // Is this an industry tile?
 		if (GetIndustryIndex(new_tile) == i->index) {  // Does it belong to the same industry?
 			IndustryGfx gfx = GetIndustryGfx(new_tile);
 			const IndustryTileSpec *indtsp = GetIndustryTileSpec(gfx);
 			const IndustryTileSpec *indold = GetIndustryTileSpec(GetIndustryGfx(old_tile));
 			if (gfx < NEW_INDUSTRYOFFSET) {  // Does it belongs to an old type?
 				/* It is an old tile.  We have to see if it's been overriden */
 				if (indtsp->grf_prop.override == INVALID_INDUSTRYTILE) {  // has it been overridden?
 					return 0xFF << 8 | gfx; // no. Tag FF + the gfx id of that tile
 				} else { // yes.  FInd out if it is from the same grf file or not
 					const IndustryTileSpec *old_tile_ovr = GetIndustryTileSpec(indtsp->grf_prop.override);
 					if (old_tile_ovr->grf_prop.grffile->grfid == indold->grf_prop.grffile->grfid) {
 						return old_tile_ovr->grf_prop.local_id; // same grf file
 					} else {
 						return 0xFFFE; // not the same grf file
+					}
+				}
 			} else {
 				if (indtsp->grf_prop.spritegroup != NULL) {  // tile has a spritegroup ?
 					if (indtsp->grf_prop.grffile->grfid == indold->grf_prop.grffile->grfid) {  // same industry, same grf ?
 						return indtsp->grf_prop.local_id;
 					} else {
 						return 0xFFFE;  // Defined in another grf file
+					}
 				} else {  // tile has no spritegroup
 					return 0xFF << 8 | indtsp->grf_prop.subst_id;  // so just give him the substitute
+				}
+			}
+		}
+	}
 	return 0xFFFF; // tile is not an industry one or  does not belong to the current industry
+}
 /** This function implements the industries variables that newGRF defines.
  * @param variable that is queried
  * @param parameter unused
@@ @@ -85,16 +131,8 @@ uint32 IndustryGetVariable(const Resolve @@
 		/* TODO: somehow determine whether we're in water or not */
 		case 0x43: return GetClosestWaterDistance(tile, true); // Manhattan distance of closes dry/water tile
 		case 0x60: { /* Get industry ID at offset param */
 			/*The parameter of this variable is an offset from the northernmost tile of the industry:
 			 * the high nibble contains the Y offset, the low one the X offset; both are unsigned.
 			 * The high word of the return value is currently reserved, and the low word can be:
 			 * 00xxh if the tile is an industry tile and was defined in the current GRF with ID xx.
 			 * FFxxh if the tile is an industry tile of an old type, and has the ID xx.
 			 * FFFEh if the tile is an industry tile that was defined in another GRF file
 			 * FFFFh if the tile isn't an industry tile, or doesn't belong to the current industry */
 			return GetIndustry(GetNearbyTile(parameter, tile))->type;
+		}
 		/* Get industry ID at offset param */
 		case 0x60: return GetIndustryIDAtOffset(GetNearbyTile(parameter, industry->xy), tile, industry);
 		case 0x61: return 0; // Get random tile bits at offset param

src/newgrf_industries.h

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@@ @@ -10,5 +10,6 @@ @@
 uint32 IndustryGetVariable(const ResolverObject *object, byte variable, byte parameter, bool *available);
 uint16 GetIndustryCallback(uint16 callback, uint32 param1, uint32 param2, Industry *industry, TileIndex tile);
 uint32 GetIndustryIDAtOffset(TileIndex new_tile, TileIndex old_tile, const Industry *i);
 #endif /* NEWGRF_INDUSTRIES_H */

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