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(svn r10926) -Feature: [NewGRF] Add support for variable 67(for real this time) and 68 of Variational Action 2 for Industries 

-Fix: a very few codestyle/comments-typo changes
This commit is contained in:
belugas 2007-08-17 00:23:33 +00:00
parent e4d318addc
commit 5f78a404f6
1 changed files with 55 additions and 7 deletions
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62
src/newgrf_industries.cpp
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@ -78,7 +78,7 @@ static uint GetClosestWaterDistance(TileIndex tile, bool water)
/** 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 old_tile TileIndex of the 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)
@ -133,6 +133,56 @@ static uint32 GetClosestIndustry(TileIndex tile, IndustryType type, const Indust
return best_dist;
}
/** Implementation of both var 67 and 68
* since the mechanism is almost the same, it is easier to regroup them on the same
* function.
* @param param_setID parameter given to the callback, which is the set id, or the local id, in our terminology
* @param layout_filter on what layout do we filter?
* @param current Industry for which the inquiry is made
* @return the formatted answer to the callback : rr(reserved) cc(count) dddd(manhattan distance of closest sister)
*/
static uint32 GetCountAndDistanceOfClosestInstance(byte param_setID, byte layout_filter, const Industry *current)
{
uint32 GrfID = GetRegister(0x100); ///< Get the GRFID of the definition to look for in register 100h
IndustryType ind_index;
uint32 closest_dist = MAX_UVALUE(uint32);
byte count = 0;
/* Determine what will be the industry type to look for */
switch (GrfID) {
case 0: // this is a default industry type
ind_index = param_setID;
break;
case 0xFFFFFFFF: // current grf
ind_index = GetIndustrySpec(current->type)->grf_prop.grffile->grfid;
/*Fall through*/
default: //use the grfid specified in register 100h
ind_index = MapNewGRFIndustryType(param_setID, GrfID);
break;
}
if (layout_filter == 0) {
/* If the filter is 0, it could be because none was specified as well as being really a 0.
* In either case, just do the regular var67 */
closest_dist = GetClosestIndustry(current->xy, ind_index, current);
count = GetIndustryTypeCount(ind_index);
} else {
/* Count only those who match the same industry type and layout filter
* Unfortunately, we have to do it manually */
const Industry *i;
FOR_ALL_INDUSTRIES(i) {
if (i->type == ind_index && i != current && i->selected_layout == layout_filter) {
closest_dist = min(closest_dist, DistanceManhattan(current->xy, i->xy));
count++;
}
}
}
return count << 16 | GB(closest_dist, 0, 16);
}
/** This function implements the industries variables that newGRF defines.
* @param variable that is queried
* @param parameter unused
@ -172,7 +222,7 @@ uint32 IndustryGetVariable(const ResolverObject *object, byte variable, byte par
case 0x62: return GetNearbyIndustryTileInformation(parameter, tile, INVALID_INDUSTRY);
/* Animation stage of nearby tiles */
case 0x63 : {
case 0x63: {
tile = GetNearbyTile(parameter, tile);
if (IsTileType(tile, MP_INDUSTRY) && GetIndustryByTile(tile) == industry) {
return GetIndustryAnimationState(tile);
@ -188,11 +238,9 @@ uint32 IndustryGetVariable(const ResolverObject *object, byte variable, byte par
case 0x66: return GetTownRadiusGroup(industry->town, tile) << 16 | min(DistanceSquare(tile, industry->town->xy), 0xFFFF);
/* Count of industry, distance of closest instance
* format is rr(reserved) cc(count) dddd(manhattan distance of closest sister)
* A lot more should be done, since it has to check for local id, grf id etc...
* let's just say it is a beginning ;) */
case 0x67: return GetIndustryTypeCount(industry->type) << 16 | 0;
case 0x68: break;
* 68 is the same as 67, but with a filtering on selected layout */
case 0x67:
case 0x68: return GetCountAndDistanceOfClosestInstance(parameter, variable == 0x68 ? GB(GetRegister(0x101), 0, 8) : 0, industry);
/* Industry structure access*/
case 0x80: return industry->xy;