newgrf_cargo.cpp
Go to the documentation of this file.00001
00002
00003
00004
00005
00006
00007
00008
00009
00012 #include "stdafx.h"
00013 #include "debug.h"
00014 #include "newgrf.h"
00015 #include "newgrf_spritegroup.h"
00016
00017 static uint32 CargoGetRandomBits(const ResolverObject *object)
00018 {
00019 return 0;
00020 }
00021
00022
00023 static uint32 CargoGetTriggers(const ResolverObject *object)
00024 {
00025 return 0;
00026 }
00027
00028
00029 static void CargoSetTriggers(const ResolverObject *object, int triggers)
00030 {
00031 return;
00032 }
00033
00034
00035 static uint32 CargoGetVariable(const ResolverObject *object, byte variable, byte parameter, bool *available)
00036 {
00037 DEBUG(grf, 1, "Unhandled cargo property 0x%X", variable);
00038
00039 *available = false;
00040 return UINT_MAX;
00041 }
00042
00043
00044 static const SpriteGroup *CargoResolveReal(const ResolverObject *object, const RealSpriteGroup *group)
00045 {
00046
00047
00048 if (group->num_loaded > 0) return group->loaded[0];
00049 if (group->num_loading > 0) return group->loading[0];
00050
00051 return NULL;
00052 }
00053
00054
00055 static void NewCargoResolver(ResolverObject *res, const CargoSpec *cs)
00056 {
00057 res->GetRandomBits = &CargoGetRandomBits;
00058 res->GetTriggers = &CargoGetTriggers;
00059 res->SetTriggers = &CargoSetTriggers;
00060 res->GetVariable = &CargoGetVariable;
00061 res->ResolveReal = &CargoResolveReal;
00062
00063 res->u.cargo.cs = cs;
00064
00065 res->callback = CBID_NO_CALLBACK;
00066 res->callback_param1 = 0;
00067 res->callback_param2 = 0;
00068 res->last_value = 0;
00069 res->trigger = 0;
00070 res->reseed = 0;
00071 res->count = 0;
00072 res->grffile = cs->grffile;
00073 }
00074
00075
00076 SpriteID GetCustomCargoSprite(const CargoSpec *cs)
00077 {
00078 const SpriteGroup *group;
00079 ResolverObject object;
00080
00081 NewCargoResolver(&object, cs);
00082
00083 group = SpriteGroup::Resolve(cs->group, &object);
00084 if (group == NULL) return 0;
00085
00086 return group->GetResult();
00087 }
00088
00089
00090 uint16 GetCargoCallback(CallbackID callback, uint32 param1, uint32 param2, const CargoSpec *cs)
00091 {
00092 ResolverObject object;
00093 const SpriteGroup *group;
00094
00095 NewCargoResolver(&object, cs);
00096 object.callback = callback;
00097 object.callback_param1 = param1;
00098 object.callback_param2 = param2;
00099
00100 group = SpriteGroup::Resolve(cs->group, &object);
00101 if (group == NULL) return CALLBACK_FAILED;
00102
00103 return group->GetCallbackResult();
00104 }
00105
00106
00107 CargoID GetCargoTranslation(uint8 cargo, const GRFFile *grffile, bool usebit)
00108 {
00109
00110 if (grffile->grf_version < 7) {
00111 if (!usebit) return cargo;
00112
00113 if (HasBit(_cargo_mask, cargo)) return GetCargoIDByBitnum(cargo);
00114 } else {
00115
00116 if (grffile->cargo_max > 0) {
00117
00118
00119 if (cargo < grffile->cargo_max) return GetCargoIDByLabel(grffile->cargo_list[cargo]);
00120 } else {
00121
00122 if (HasBit(_cargo_mask, cargo)) return GetCargoIDByBitnum(cargo);
00123 }
00124 }
00125 return CT_INVALID;
00126 }
00127
00128 uint8 GetReverseCargoTranslation(CargoID cargo, const GRFFile *grffile)
00129 {
00130
00131 const CargoSpec *cs = CargoSpec::Get(cargo);
00132
00133
00134
00135 for (uint i = 0; i < grffile->cargo_max; i++) {
00136 if (cs->label == grffile->cargo_list[i]) return i;
00137 }
00138
00139
00140 return cs->bitnum;;
00141 }