author | richk |
Tue, 17 Jun 2008 13:41:57 +0000 | |
branch | NewGRF_ports |
changeset 10995 | 311b38c7f9a7 |
parent 10724 | 68a692eacf22 |
permissions | -rw-r--r-- |
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/* $Id$ */ |
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/** @file newgrf_cargo.cpp Implementation of NewGRF cargoes. */ |
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#include "stdafx.h" |
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#include "openttd.h" |
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#include "debug.h" |
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#include "cargotype.h" |
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#include "newgrf.h" |
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#include "newgrf_callbacks.h" |
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#include "newgrf_spritegroup.h" |
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#include "newgrf_cargo.h" |
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static uint32 CargoGetRandomBits(const ResolverObject *object) |
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{ |
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return 0; |
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} |
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static uint32 CargoGetTriggers(const ResolverObject *object) |
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{ |
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return 0; |
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} |
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static void CargoSetTriggers(const ResolverObject *object, int triggers) |
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{ |
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return; |
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} |
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static uint32 CargoGetVariable(const ResolverObject *object, byte variable, byte parameter, bool *available) |
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{ |
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DEBUG(grf, 1, "Unhandled cargo property 0x%X", variable); |
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*available = false; |
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return 0; |
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} |
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static const SpriteGroup *CargoResolveReal(const ResolverObject *object, const SpriteGroup *group) |
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{ |
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/* Cargo action 2s should always have only 1 "loaded" state, but some |
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* times things don't follow the spec... */ |
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if (group->g.real.num_loaded > 0) return group->g.real.loaded[0]; |
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if (group->g.real.num_loading > 0) return group->g.real.loading[0]; |
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return NULL; |
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} |
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static void NewCargoResolver(ResolverObject *res, const CargoSpec *cs) |
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{ |
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res->GetRandomBits = &CargoGetRandomBits; |
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res->GetTriggers = &CargoGetTriggers; |
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res->SetTriggers = &CargoSetTriggers; |
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res->GetVariable = &CargoGetVariable; |
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res->ResolveReal = &CargoResolveReal; |
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res->u.cargo.cs = cs; |
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res->callback = CBID_NO_CALLBACK; |
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res->callback_param1 = 0; |
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res->callback_param2 = 0; |
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res->last_value = 0; |
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res->trigger = 0; |
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res->reseed = 0; |
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res->count = 0; |
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} |
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SpriteID GetCustomCargoSprite(const CargoSpec *cs) |
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{ |
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const SpriteGroup *group; |
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ResolverObject object; |
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NewCargoResolver(&object, cs); |
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group = Resolve(cs->group, &object); |
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if (group == NULL || group->type != SGT_RESULT) return 0; |
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return group->g.result.sprite; |
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} |
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uint16 GetCargoCallback(CallbackID callback, uint32 param1, uint32 param2, const CargoSpec *cs) |
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{ |
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ResolverObject object; |
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const SpriteGroup *group; |
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NewCargoResolver(&object, cs); |
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object.callback = callback; |
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object.callback_param1 = param1; |
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object.callback_param2 = param2; |
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group = Resolve(cs->group, &object); |
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if (group == NULL || group->type != SGT_CALLBACK) return CALLBACK_FAILED; |
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return group->g.callback.result; |
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} |
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CargoID GetCargoTranslation(uint8 cargo, const GRFFile *grffile, bool usebit) |
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{ |
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/* Pre-version 7 uses the 'climate dependent' ID, i.e. cargo is the cargo ID */ |
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if (grffile->grf_version < 7) { |
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if (!usebit) return cargo; |
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/* Else the cargo value is a 'climate independent' 'bitnum' */ |
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110 |
if (HasBit(_cargo_mask, cargo)) return GetCargoIDByBitnum(cargo); |
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111 |
} else { |
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112 |
/* If the GRF contains a translation table (and the cargo is in bounds) |
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113 |
* then get the cargo ID for the label */ |
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114 |
if (cargo < grffile->cargo_max) return GetCargoIDByLabel(grffile->cargo_list[cargo]); |
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115 |
} |
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116 |
return CT_INVALID; |
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117 |
} |
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118 |
|
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119 |
uint8 GetReverseCargoTranslation(CargoID cargo, const GRFFile *grffile) |
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120 |
{ |
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121 |
/* Note: All grf versions use CargoBit here. Pre-version 7 do NOT use the 'climate dependent' ID. */ |
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122 |
const CargoSpec *cs = GetCargo(cargo); |
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123 |
|
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/* If the GRF contains a translation table (and the cargo is in the table) |
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125 |
* then get the cargo ID for the label */ |
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126 |
for (uint i = 0; i < grffile->cargo_max; i++) { |
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if (cs->label == grffile->cargo_list[i]) return i; |
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128 |
} |
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129 |
|
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/* No matching label was found, so we return the 'climate independent' 'bitnum' */ |
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131 |
return cs->bitnum;; |
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132 |
} |