newgrf_railtype.cpp
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00002
00005 #include "stdafx.h"
00006 #include "openttd.h"
00007 #include "variables.h"
00008 #include "debug.h"
00009 #include "strings_type.h"
00010 #include "rail.h"
00011 #include "road_map.h"
00012 #include "newgrf.h"
00013 #include "newgrf_callbacks.h"
00014 #include "newgrf_commons.h"
00015 #include "newgrf_railtype.h"
00016 #include "newgrf_spritegroup.h"
00017
00018 static uint32 RailTypeGetRandomBits(const ResolverObject *object)
00019 {
00020 return 0;
00021 }
00022
00023 static uint32 RailTypeGetTriggers(const ResolverObject *object)
00024 {
00025 return 0;
00026 }
00027
00028 static void RailTypeSetTriggers(const ResolverObject *object, int triggers)
00029 {
00030 }
00031
00032 static uint32 RailTypeGetVariable(const ResolverObject *object, byte variable, byte parameter, bool *available)
00033 {
00034 TileIndex tile = object->u.routes.tile;
00035
00036 if (tile == INVALID_TILE) {
00037 switch (variable) {
00038 case 0x40: return 0;
00039 case 0x41: return 0;
00040 case 0x42: return 0;
00041 }
00042 }
00043
00044 switch (variable) {
00045 case 0x40: return GetTerrainType(tile);
00046 case 0x41: return 0;
00047 case 0x42: return IsLevelCrossingTile(tile) && IsCrossingBarred(tile);
00048 }
00049
00050 DEBUG(grf, 1, "Unhandled rail type tile property 0x%X", variable);
00051
00052 *available = false;
00053 return UINT_MAX;
00054 }
00055
00056 static const SpriteGroup *RailTypeResolveReal(const ResolverObject *object, const RealSpriteGroup *group)
00057 {
00058 if (group->num_loading > 0) return group->loading[0];
00059 if (group->num_loaded > 0) return group->loaded[0];
00060 return NULL;
00061 }
00062
00063 static inline void NewRailTypeResolver(ResolverObject *res, TileIndex tile)
00064 {
00065 res->GetRandomBits = &RailTypeGetRandomBits;
00066 res->GetTriggers = &RailTypeGetTriggers;
00067 res->SetTriggers = &RailTypeSetTriggers;
00068 res->GetVariable = &RailTypeGetVariable;
00069 res->ResolveReal = &RailTypeResolveReal;
00070
00071 res->u.routes.tile = tile;
00072
00073 res->callback = CBID_NO_CALLBACK;
00074 res->callback_param1 = 0;
00075 res->callback_param2 = 0;
00076 res->last_value = 0;
00077 res->trigger = 0;
00078 res->reseed = 0;
00079 res->count = 0;
00080 }
00081
00082 SpriteID GetCustomRailSprite(const RailtypeInfo *rti, TileIndex tile, RailTypeSpriteGroup rtsg)
00083 {
00084 assert(rtsg < RTSG_END);
00085
00086 if (rti->group[rtsg] == NULL) return 0;
00087
00088 const SpriteGroup *group;
00089 ResolverObject object;
00090
00091 NewRailTypeResolver(&object, tile);
00092
00093 group = SpriteGroup::Resolve(rti->group[rtsg], &object);
00094 if (group == NULL || group->GetNumResults() == 0) return 0;
00095
00096 return group->GetResult();
00097 }
00098
00099 uint8 GetReverseRailTypeTranslation(RailType railtype, const GRFFile *grffile)
00100 {
00101
00102 if (grffile->railtype_max == 0) return railtype;
00103
00104
00105 RailTypeLabel label = GetRailTypeInfo(railtype)->label;
00106 for (uint i = 0; i < grffile->railtype_max; i++) {
00107 if (label == grffile->railtype_list[i]) return i;
00108 }
00109
00110
00111 return 0xFF;
00112 }