newgrf_cargo.cpp
00001
00002
00003 #include "stdafx.h"
00004 #include "openttd.h"
00005 #include "debug.h"
00006 #include "cargotype.h"
00007 #include "newgrf.h"
00008 #include "newgrf_callbacks.h"
00009 #include "newgrf_spritegroup.h"
00010 #include "newgrf_cargo.h"
00011
00012
00013 static uint32 CargoGetRandomBits(const ResolverObject *object)
00014 {
00015 return 0;
00016 }
00017
00018
00019 static uint32 CargoGetTriggers(const ResolverObject *object)
00020 {
00021 return 0;
00022 }
00023
00024
00025 static void CargoSetTriggers(const ResolverObject *object, int triggers)
00026 {
00027 return;
00028 }
00029
00030
00031 static uint32 CargoGetVariable(const ResolverObject *object, byte variable, byte parameter, bool *available)
00032 {
00033 DEBUG(grf, 1, "Unhandled cargo property 0x%X", variable);
00034
00035 *available = false;
00036 return 0;
00037 }
00038
00039
00040 static const SpriteGroup *CargoResolveReal(const ResolverObject *object, const SpriteGroup *group)
00041 {
00042
00043
00044 if (group->g.real.num_loaded > 0) return group->g.real.loaded[0];
00045 if (group->g.real.num_loading > 0) return group->g.real.loading[0];
00046
00047 return NULL;
00048 }
00049
00050
00051 static void NewCargoResolver(ResolverObject *res, const CargoSpec *cs)
00052 {
00053 res->GetRandomBits = &CargoGetRandomBits;
00054 res->GetTriggers = &CargoGetTriggers;
00055 res->SetTriggers = &CargoSetTriggers;
00056 res->GetVariable = &CargoGetVariable;
00057 res->ResolveReal = &CargoResolveReal;
00058
00059 res->u.cargo.cs = cs;
00060
00061 res->callback = CBID_NO_CALLBACK;
00062 res->callback_param1 = 0;
00063 res->callback_param2 = 0;
00064 res->last_value = 0;
00065 res->trigger = 0;
00066 res->reseed = 0;
00067 }
00068
00069
00070 SpriteID GetCustomCargoSprite(const CargoSpec *cs)
00071 {
00072 const SpriteGroup *group;
00073 ResolverObject object;
00074
00075 NewCargoResolver(&object, cs);
00076
00077 group = Resolve(cs->group, &object);
00078 if (group == NULL || group->type != SGT_RESULT) return 0;
00079
00080 return group->g.result.sprite;
00081 }
00082
00083
00084 uint16 GetCargoCallback(CallbackID callback, uint32 param1, uint32 param2, const CargoSpec *cs)
00085 {
00086 ResolverObject object;
00087 const SpriteGroup *group;
00088
00089 NewCargoResolver(&object, cs);
00090 object.callback = callback;
00091 object.callback_param1 = param1;
00092 object.callback_param2 = param2;
00093
00094 group = Resolve(cs->group, &object);
00095 if (group == NULL || group->type != SGT_CALLBACK) return CALLBACK_FAILED;
00096
00097 return group->g.callback.result;
00098 }
00099
00100
00101 CargoID GetCargoTranslation(uint8 cargo, const GRFFile *grffile, bool usebit)
00102 {
00103
00104 if (grffile->grf_version < 7) {
00105 if (!usebit) return cargo;
00106
00107 if (HasBit(_cargo_mask, cargo)) return GetCargoIDByBitnum(cargo);
00108 } else {
00109
00110 if (grffile->cargo_max > 0) {
00111
00112
00113 if (cargo < grffile->cargo_max) return GetCargoIDByLabel(grffile->cargo_list[cargo]);
00114 } else {
00115
00116 if (HasBit(_cargo_mask, cargo)) return GetCargoIDByBitnum(cargo);
00117 }
00118 }
00119 return CT_INVALID;
00120 }
00121
00122 uint8 GetReverseCargoTranslation(CargoID cargo, const GRFFile *grffile)
00123 {
00124
00125 const CargoSpec *cs = GetCargo(cargo);
00126
00127
00128
00129 for (uint i = 0; i < grffile->cargo_max; i++) {
00130 if (cs->label == grffile->cargo_list[i]) return i;
00131 }
00132
00133
00134 return cs->bitnum;;
00135 }