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119 lines
4.4 KiB
C++
119 lines
4.4 KiB
C++
/*
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* This file is part of OpenTTD.
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* 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.
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* 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.
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* 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/>.
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*/
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/** @file newgrf_newsignals.h NewGRF handling of new signals. */
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#ifndef NEWGRF_NEWSIGNALS_H
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#define NEWGRF_NEWSIGNALS_H
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#include "newgrf_commons.h"
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#include "newgrf_spritegroup.h"
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#include "tunnel_map.h"
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#include "gfx_type.h"
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#include <vector>
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#include <array>
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extern std::vector<const GRFFile *> _new_signals_grfs;
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struct TraceRestrictProgram;
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struct GRFFile;
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enum {
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MAX_NEW_SIGNAL_STYLES = 15,
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};
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enum NewSignalStyleFlags {
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NSSF_NO_ASPECT_INC = 0,
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NSSF_ALWAYS_RESERVE_THROUGH = 1,
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NSSF_LOOKAHEAD_ASPECTS_SET = 2,
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NSSF_OPPOSITE_SIDE = 3,
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NSSF_LOOKAHEAD_SINGLE_SIGNAL = 4,
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NSSF_COMBINED_NORMAL_SHUNT = 5,
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NSSF_REALISTIC_BRAKING_ONLY = 6,
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NSSF_BOTH_SIDES = 7,
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};
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struct NewSignalStyle {
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const GRFFile *grffile;
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StringID name;
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uint8_t grf_local_id;
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uint8_t style_flags;
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uint8_t lookahead_extra_aspects;
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uint8_t semaphore_mask;
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uint8_t electric_mask;
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PalSpriteID signals[SIGTYPE_END][2][2];
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};
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extern std::array<NewSignalStyle, MAX_NEW_SIGNAL_STYLES> _new_signal_styles;
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struct NewSignalStyleMapping {
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uint32_t grfid = 0;
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uint8_t grf_local_id = 0;
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inline bool operator==(const NewSignalStyleMapping& o) const { return grfid == o.grfid && grf_local_id == o.grf_local_id; }
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};
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extern std::array<NewSignalStyleMapping, MAX_NEW_SIGNAL_STYLES> _new_signal_style_mapping;
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extern uint8_t _num_new_signal_styles;
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extern uint16_t _enabled_new_signal_styles_mask;
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/** Resolver for the new signals scope. */
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struct NewSignalsScopeResolver : public ScopeResolver {
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TileIndex tile; ///< Tracktile. For track on a bridge this is the southern bridgehead.
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TileContext context; ///< Are we resolving sprites for the upper halftile, or on a bridge?
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CustomSignalSpriteContext signal_context;
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uint8_t signal_style;
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const TraceRestrictProgram *prog;
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uint z;
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/**
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* Constructor of the railtype scope resolvers.
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* @param ro Surrounding resolver.
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* @param tile %Tile containing the track. For track on a bridge this is the southern bridgehead.
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* @param context Are we resolving sprites for the upper halftile, or on a bridge?
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* @param signal_context Signal context.
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*/
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NewSignalsScopeResolver(ResolverObject &ro, TileIndex tile, TileContext context, CustomSignalSpriteContext signal_context, uint8_t signal_style, const TraceRestrictProgram *prog, uint z)
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: ScopeResolver(ro), tile(tile), context(context), signal_context(signal_context), signal_style(signal_style), prog(prog), z(z)
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{
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}
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uint32_t GetRandomBits() const override;
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uint32_t GetVariable(uint16_t variable, uint32_t parameter, GetVariableExtra *extra) const override;
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};
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/** Resolver object for rail types. */
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struct NewSignalsResolverObject : public ResolverObject {
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NewSignalsScopeResolver newsignals_scope; ///< Resolver for the new signals scope.
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NewSignalsResolverObject(const GRFFile *grffile, TileIndex tile, TileContext context, uint32_t param1, uint32_t param2,
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CustomSignalSpriteContext signal_context, uint8_t signal_style, const TraceRestrictProgram *prog = nullptr, uint z = 0);
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ScopeResolver *GetScope(VarSpriteGroupScope scope = VSG_SCOPE_SELF, VarSpriteGroupScopeOffset relative = 0) override
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{
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switch (scope) {
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case VSG_SCOPE_SELF: return &this->newsignals_scope;
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default: return ResolverObject::GetScope(scope, relative);
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}
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}
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const SpriteGroup *ResolveReal(const RealSpriteGroup *group) const override;
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GrfSpecFeature GetFeature() const override;
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};
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uint GetNewSignalsRestrictedSignalsInfo(const TraceRestrictProgram *prog, TileIndex tile, uint8_t signal_style);
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uint GetNewSignalsVerticalClearanceInfo(TileIndex tile, uint z);
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inline uint GetNewSignalsSignalContext(CustomSignalSpriteContext signal_context)
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{
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return (uint)signal_context.ctx_mode | (((uint)signal_context.ctx_flags) << 8);
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}
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uint32_t GetNewSignalsSideVariable();
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#endif /* NEWGRF_NEWSIGNALS_H */
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