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@ r28645:c09eac136c46
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Location: cpp/openttd-patchpack/source/src/newgrf_railtype.cpp
r28645:c09eac136c46
6.4 KiB
text/x-c
Change: Link houses production on industry chain graph by TPE_PASSENGERS or TPE_MAIL cargo.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 | /*
* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file newgrf_railtype.cpp NewGRF handling of rail types. */
#include "stdafx.h"
#include "core/container_func.hpp"
#include "debug.h"
#include "newgrf_railtype.h"
#include "timer/timer_game_calendar.h"
#include "depot_base.h"
#include "town.h"
#include "safeguards.h"
/* virtual */ uint32_t RailTypeScopeResolver::GetRandomBits() const
{
uint tmp = CountBits(this->tile.base() + (TileX(this->tile) + TileY(this->tile)) * TILE_SIZE);
return GB(tmp, 0, 2);
}
/* virtual */ uint32_t RailTypeScopeResolver::GetVariable(byte variable, [[maybe_unused]] uint32_t parameter, bool *available) const
{
if (this->tile == INVALID_TILE) {
switch (variable) {
case 0x40: return 0;
case 0x41: return 0;
case 0x42: return 0;
case 0x43: return TimerGameCalendar::date.base();
case 0x44: return HZB_TOWN_EDGE;
}
}
switch (variable) {
case 0x40: return GetTerrainType(this->tile, this->context);
case 0x41: return 0;
case 0x42: return IsLevelCrossingTile(this->tile) && IsCrossingBarred(this->tile);
case 0x43:
if (IsRailDepotTile(this->tile)) return Depot::GetByTile(this->tile)->build_date.base();
return TimerGameCalendar::date.base();
case 0x44: {
const Town *t = nullptr;
if (IsRailDepotTile(this->tile)) {
t = Depot::GetByTile(this->tile)->town;
} else if (IsLevelCrossingTile(this->tile)) {
t = ClosestTownFromTile(this->tile, UINT_MAX);
}
return t != nullptr ? GetTownRadiusGroup(t, this->tile) : HZB_TOWN_EDGE;
}
}
Debug(grf, 1, "Unhandled rail type tile variable 0x{:X}", variable);
*available = false;
return UINT_MAX;
}
GrfSpecFeature RailTypeResolverObject::GetFeature() const
{
return GSF_RAILTYPES;
}
uint32_t RailTypeResolverObject::GetDebugID() const
{
return this->railtype_scope.rti->label;
}
/**
* Resolver object for rail types.
* @param rti Railtype. nullptr in NewGRF Inspect window.
* @param tile %Tile containing the track. For track on a bridge this is the southern bridgehead.
* @param context Are we resolving sprites for the upper halftile, or on a bridge?
* @param rtsg Railpart of interest
* @param param1 Extra parameter (first parameter of the callback, except railtypes do not have callbacks).
* @param param2 Extra parameter (second parameter of the callback, except railtypes do not have callbacks).
*/
RailTypeResolverObject::RailTypeResolverObject(const RailTypeInfo *rti, TileIndex tile, TileContext context, RailTypeSpriteGroup rtsg, uint32_t param1, uint32_t param2)
: ResolverObject(rti != nullptr ? rti->grffile[rtsg] : nullptr, CBID_NO_CALLBACK, param1, param2), railtype_scope(*this, rti, tile, context)
{
this->root_spritegroup = rti != nullptr ? rti->group[rtsg] : nullptr;
}
/**
* Get the sprite to draw for the given tile.
* @param rti The rail type data (spec).
* @param tile The tile to get the sprite for.
* @param rtsg The type of sprite to draw.
* @param context Where are we drawing the tile?
* @param[out] num_results If not nullptr, return the number of sprites in the spriteset.
* @return The sprite to draw.
*/
SpriteID GetCustomRailSprite(const RailTypeInfo *rti, TileIndex tile, RailTypeSpriteGroup rtsg, TileContext context, uint *num_results)
{
assert(rtsg < RTSG_END);
if (rti->group[rtsg] == nullptr) return 0;
RailTypeResolverObject object(rti, tile, context, rtsg);
const SpriteGroup *group = object.Resolve();
if (group == nullptr || group->GetNumResults() == 0) return 0;
if (num_results) *num_results = group->GetNumResults();
return group->GetResult();
}
/**
* Get the sprite to draw for a given signal.
* @param rti The rail type data (spec).
* @param tile The tile to get the sprite for.
* @param type Signal type.
* @param var Signal variant.
* @param state Signal state.
* @param gui Is the sprite being used on the map or in the GUI?
* @return The sprite to draw.
*/
SpriteID GetCustomSignalSprite(const RailTypeInfo *rti, TileIndex tile, SignalType type, SignalVariant var, SignalState state, bool gui)
{
if (rti->group[RTSG_SIGNALS] == nullptr) return 0;
uint32_t param1 = gui ? 0x10 : 0x00;
uint32_t param2 = (type << 16) | (var << 8) | state;
RailTypeResolverObject object(rti, tile, TCX_NORMAL, RTSG_SIGNALS, param1, param2);
const SpriteGroup *group = object.Resolve();
if (group == nullptr || group->GetNumResults() == 0) return 0;
return group->GetResult();
}
/**
* Translate an index to the GRF-local railtype-translation table into a RailType.
* @param railtype Index into GRF-local translation table.
* @param grffile Originating GRF file.
* @return RailType or INVALID_RAILTYPE if the railtype is unknown.
*/
RailType GetRailTypeTranslation(uint8_t railtype, const GRFFile *grffile)
{
if (grffile == nullptr || grffile->railtype_list.empty()) {
/* No railtype table present. Return railtype as-is (if valid), so it works for original railtypes. */
if (railtype >= RAILTYPE_END || GetRailTypeInfo(static_cast<RailType>(railtype))->label == 0) return INVALID_RAILTYPE;
return static_cast<RailType>(railtype);
} else {
/* Railtype table present, but invalid index, return invalid type. */
if (railtype >= grffile->railtype_list.size()) return INVALID_RAILTYPE;
/* Look up railtype including alternate labels. */
return GetRailTypeByLabel(grffile->railtype_list[railtype]);
}
}
/**
* Perform a reverse railtype lookup to get the GRF internal ID.
* @param railtype The global (OpenTTD) railtype.
* @param grffile The GRF to do the lookup for.
* @return the GRF internal ID.
*/
uint8_t GetReverseRailTypeTranslation(RailType railtype, const GRFFile *grffile)
{
/* No rail type table present, return rail type as-is */
if (grffile == nullptr || grffile->railtype_list.empty()) return railtype;
/* Look for a matching rail type label in the table */
RailTypeLabel label = GetRailTypeInfo(railtype)->label;
int idx = find_index(grffile->railtype_list, label);
if (idx >= 0) return idx;
/* If not found, return as invalid */
return 0xFF;
}
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