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00012 #include "stdafx.h"
00013 #include "debug.h"
00014 #include "newgrf_spritegroup.h"
00015 #include "date_func.h"
00016 #include "depot_base.h"
00017 #include "town.h"
00018
00019 static uint32 RailTypeGetRandomBits(const ResolverObject *object)
00020 {
00021 TileIndex tile = object->u.routes.tile;
00022 uint tmp = CountBits(tile + (TileX(tile) + TileY(tile)) * TILE_SIZE);
00023 return GB(tmp, 0, 2);
00024 }
00025
00026 static uint32 RailTypeGetTriggers(const ResolverObject *object)
00027 {
00028 return 0;
00029 }
00030
00031 static void RailTypeSetTriggers(const ResolverObject *object, int triggers)
00032 {
00033 }
00034
00035 static uint32 RailTypeGetVariable(const ResolverObject *object, byte variable, uint32 parameter, bool *available)
00036 {
00037 TileIndex tile = object->u.routes.tile;
00038
00039 if (tile == INVALID_TILE) {
00040 switch (variable) {
00041 case 0x40: return 0;
00042 case 0x41: return 0;
00043 case 0x42: return 0;
00044 case 0x43: return _date;
00045 case 0x44: return HZB_TOWN_EDGE;
00046 }
00047 }
00048
00049 switch (variable) {
00050 case 0x40: return GetTerrainType(tile, object->u.routes.context);
00051 case 0x41: return 0;
00052 case 0x42: return IsLevelCrossingTile(tile) && IsCrossingBarred(tile);
00053 case 0x43:
00054 if (IsRailDepotTile(tile)) return Depot::GetByTile(tile)->build_date;
00055 return _date;
00056 case 0x44: {
00057 const Town *t = NULL;
00058 if (IsRailDepotTile(tile)) {
00059 t = Depot::GetByTile(tile)->town;
00060 } else if (IsLevelCrossingTile(tile)) {
00061 t = ClosestTownFromTile(tile, UINT_MAX);
00062 }
00063 return t != NULL ? GetTownRadiusGroup(t, tile) : HZB_TOWN_EDGE;
00064 }
00065 }
00066
00067 DEBUG(grf, 1, "Unhandled rail type tile variable 0x%X", variable);
00068
00069 *available = false;
00070 return UINT_MAX;
00071 }
00072
00073 static const SpriteGroup *RailTypeResolveReal(const ResolverObject *object, const RealSpriteGroup *group)
00074 {
00075 if (group->num_loading > 0) return group->loading[0];
00076 if (group->num_loaded > 0) return group->loaded[0];
00077 return NULL;
00078 }
00079
00080 static inline void NewRailTypeResolver(ResolverObject *res, TileIndex tile, TileContext context, const GRFFile *grffile, uint32 param1 = 0, uint32 param2 = 0)
00081 {
00082 res->GetRandomBits = &RailTypeGetRandomBits;
00083 res->GetTriggers = &RailTypeGetTriggers;
00084 res->SetTriggers = &RailTypeSetTriggers;
00085 res->GetVariable = &RailTypeGetVariable;
00086 res->ResolveReal = &RailTypeResolveReal;
00087
00088 res->u.routes.tile = tile;
00089 res->u.routes.context = context;
00090
00091 res->callback = CBID_NO_CALLBACK;
00092 res->callback_param1 = param1;
00093 res->callback_param2 = param2;
00094 res->ResetState();
00095
00096 res->grffile = grffile;
00097 }
00098
00107 SpriteID GetCustomRailSprite(const RailtypeInfo *rti, TileIndex tile, RailTypeSpriteGroup rtsg, TileContext context)
00108 {
00109 assert(rtsg < RTSG_END);
00110
00111 if (rti->group[rtsg] == NULL) return 0;
00112
00113 const SpriteGroup *group;
00114 ResolverObject object;
00115
00116 NewRailTypeResolver(&object, tile, context, rti->grffile[rtsg]);
00117
00118 group = SpriteGroup::Resolve(rti->group[rtsg], &object);
00119 if (group == NULL || group->GetNumResults() == 0) return 0;
00120
00121 return group->GetResult();
00122 }
00123
00134 SpriteID GetCustomSignalSprite(const RailtypeInfo *rti, TileIndex tile, SignalType type, SignalVariant var, SignalState state, bool gui)
00135 {
00136 if (rti->group[RTSG_SIGNALS] == NULL) return 0;
00137
00138 ResolverObject object;
00139
00140 uint32 param1 = gui ? 0x10 : 0x00;
00141 uint32 param2 = (type << 16) | (var << 8) | state;
00142 NewRailTypeResolver(&object, tile, TCX_NORMAL, rti->grffile[RTSG_SIGNALS], param1, param2);
00143
00144 const SpriteGroup *group = SpriteGroup::Resolve(rti->group[RTSG_SIGNALS], &object);
00145 if (group == NULL || group->GetNumResults() == 0) return 0;
00146
00147 return group->GetResult();
00148 }
00149
00156 uint8 GetReverseRailTypeTranslation(RailType railtype, const GRFFile *grffile)
00157 {
00158
00159 if (grffile == NULL || grffile->railtype_list.Length() == 0) return railtype;
00160
00161
00162 RailTypeLabel label = GetRailTypeInfo(railtype)->label;
00163 int index = grffile->railtype_list.FindIndex(label);
00164 if (index >= 0) return index;
00165
00166
00167 return 0xFF;
00168 }
00169
00175 void GetRailTypeResolver(ResolverObject *ro, uint index)
00176 {
00177
00178
00179 NewRailTypeResolver(ro, index, TCX_NORMAL, NULL);
00180 }