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(svn r22434) -Feature [FS#4591]: [NewGRF] Allow to filter by town of the current industry when using industry variable 0x68 (Yexo)

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This commit is contained in:
terkhen 2011-05-07 10:20:29 +00:00
parent 43f7d6c0b7
commit e070f90aed
1 changed files with 14 additions and 4 deletions
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18
src/newgrf_industries.cpp
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@ -112,10 +112,11 @@ static uint32 GetClosestIndustry(TileIndex tile, IndustryType type, const Indust
* 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 town_filter Do we filter on the same town as the current industry?
* @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)
static uint32 GetCountAndDistanceOfClosestInstance(byte param_setID, byte layout_filter, bool town_filter, const Industry *current)
{
uint32 GrfID = GetRegister(0x100); ///< Get the GRFID of the definition to look for in register 100h
IndustryType ind_index;
@ -141,7 +142,7 @@ static uint32 GetCountAndDistanceOfClosestInstance(byte param_setID, byte layout
/* If the industry type is invalid, there is none and the closest is far away. */
if (ind_index >= NUM_INDUSTRYTYPES) return 0 | 0xFFFF;
if (layout_filter == 0) {
if (layout_filter == 0 && !town_filter) {
/* 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->location.tile, ind_index, current);
@ -151,7 +152,7 @@ static uint32 GetCountAndDistanceOfClosestInstance(byte param_setID, byte layout
* 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) {
if (i->type == ind_index && i != current && (i->selected_layout == layout_filter || layout_filter == 0) && (!town_filter || i->town == current->town)) {
closest_dist = min(closest_dist, DistanceManhattan(current->location.tile, i->location.tile));
count++;
}
@ -270,7 +271,16 @@ uint32 IndustryGetVariable(const ResolverObject *object, byte variable, byte par
/* Count of industry, distance of closest instance
* 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);
case 0x68: {
byte layout_filter = 0;
bool town_filter = false;
if (variable == 0x68) {
uint32 reg = GetRegister(0x101);
layout_filter = GB(reg, 0, 8);
town_filter = HasBit(reg, 8);
}
return GetCountAndDistanceOfClosestInstance(parameter, layout_filter, town_filter, industry);
}
/* Get a variable from the persistent storage */
case 0x7C: return industry->psa.Get(parameter);