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/*
* 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_config.h Functions to find and configure NewGRFs. */
#ifndef NEWGRF_CONFIG_H
#define NEWGRF_CONFIG_H
#include "strings_type.h"
#include "core/alloc_type.hpp"
#include "core/smallmap_type.hpp"
#include "misc/countedptr.hpp"
#include "fileio_type.h"
#include "textfile_type.h"
#include "newgrf_text.h"
/** GRF config bit flags */
enum GCF_Flags {
GCF_SYSTEM, ///< GRF file is an openttd-internal system grf
GCF_UNSAFE, ///< GRF file is unsafe for static usage
GCF_STATIC, ///< GRF file is used statically (can be used in any MP game)
GCF_COMPATIBLE, ///< GRF file does not exactly match the requested GRF (different MD5SUM), but grfid matches)
GCF_COPY, ///< The data is copied from a grf in _all_grfs
GCF_INIT_ONLY, ///< GRF file is processed up to GLS_INIT
GCF_RESERVED, ///< GRF file passed GLS_RESERVE stage
GCF_INVALID, ///< GRF is unusable with this version of OpenTTD
};
/** Status of GRF */
enum GRFStatus {
GCS_UNKNOWN, ///< The status of this grf file is unknown
GCS_DISABLED, ///< GRF file is disabled
GCS_NOT_FOUND, ///< GRF file was not found in the local cache
GCS_INITIALISED, ///< GRF file has been initialised
GCS_ACTIVATED, ///< GRF file has been activated
};
/** Encountered GRF bugs */
enum GRFBugs {
GBUG_VEH_LENGTH, ///< Length of rail vehicle changes when not inside a depot
GBUG_VEH_REFIT, ///< Articulated vehicles carry different cargoes resp. are differently refittable than specified in purchase list
GBUG_VEH_POWERED_WAGON, ///< Powered wagon changed poweredness state when not inside a depot
GBUG_UNKNOWN_CB_RESULT, ///< A callback returned an unknown/invalid result
GBUG_VEH_CAPACITY, ///< Capacity of vehicle changes when not refitting or arranging
};
/** Status of post-gameload GRF compatibility check */
enum GRFListCompatibility {
GLC_ALL_GOOD, ///< All GRF needed by game are present
GLC_COMPATIBLE, ///< Compatible (eg. the same ID, but different checksum) GRF found in at least one case
GLC_NOT_FOUND, ///< At least one GRF couldn't be found (higher priority than GLC_COMPATIBLE)
};
/** Information that can/has to be stored about a GRF's palette. */
enum GRFPalette {
GRFP_USE_BIT = 0, ///< The bit used for storing the palette to use.
GRFP_GRF_OFFSET = 2, ///< The offset of the GRFP_GRF data.
GRFP_GRF_SIZE = 2, ///< The size of the GRFP_GRF data.
GRFP_BLT_OFFSET = 4, ///< The offset of the GRFP_BLT data.
GRFP_BLT_SIZE = 1, ///< The size of the GRFP_BLT data.
GRFP_USE_DOS = 0x0, ///< The palette state is set to use the DOS palette.
GRFP_USE_WINDOWS = 0x1, ///< The palette state is set to use the Windows palette.
GRFP_USE_MASK = 0x1, ///< Bitmask to get only the use palette use states.
GRFP_GRF_UNSET = 0x0 << GRFP_GRF_OFFSET, ///< The NewGRF provided no information.
GRFP_GRF_DOS = 0x1 << GRFP_GRF_OFFSET, ///< The NewGRF says the DOS palette can be used.
GRFP_GRF_WINDOWS = 0x2 << GRFP_GRF_OFFSET, ///< The NewGRF says the Windows palette can be used.
GRFP_GRF_ANY = GRFP_GRF_DOS | GRFP_GRF_WINDOWS, ///< The NewGRF says any palette can be used.
GRFP_GRF_MASK = GRFP_GRF_ANY, ///< Bitmask to get only the NewGRF supplied information.
GRFP_BLT_UNSET = 0x0 << GRFP_BLT_OFFSET, ///< The NewGRF provided no information or doesn't care about a 32 bpp blitter.
GRFP_BLT_32BPP = 0x1 << GRFP_BLT_OFFSET, ///< The NewGRF prefers a 32 bpp blitter.
GRFP_BLT_MASK = GRFP_BLT_32BPP, ///< Bitmask to only get the blitter information.
};
/** Basic data to distinguish a GRF. Used in the server list window */
struct GRFIdentifier {
uint32 grfid; ///< GRF ID (defined by Action 0x08)
uint8 md5sum[16]; ///< MD5 checksum of file to distinguish files with the same GRF ID (eg. newer version of GRF)
GRFIdentifier() = default;
GRFIdentifier(const GRFIdentifier &other) = default;
GRFIdentifier(GRFIdentifier &&other) = default;
GRFIdentifier(uint32 grfid, const uint8 *md5sum) : grfid(grfid)
{
MemCpyT(this->md5sum, md5sum, lengthof(this->md5sum));
}
GRFIdentifier& operator =(const GRFIdentifier &other) = default;
/**
* Does the identification match the provided values?
* @param grfid Expected grfid.
* @param md5sum Expected md5sum, may be \c nullptr (in which case, do not check it).
* @return the object has the provided grfid and md5sum.
*/
inline bool HasGrfIdentifier(uint32 grfid, const uint8 *md5sum) const
{
if (this->grfid != grfid) return false;
if (md5sum == nullptr) return true;
return memcmp(md5sum, this->md5sum, sizeof(this->md5sum)) == 0;
}
};
/** Information about why GRF had problems during initialisation */
struct GRFError {
GRFError(StringID severity, StringID message = 0);
GRFError(const GRFError &error);
/* Remove the copy assignment, as the default implementation will not do the right thing. */
GRFError &operator=(GRFError &rhs) = delete;
std::string custom_message; ///< Custom message (if present)
std::string data; ///< Additional data for message and custom_message
StringID message; ///< Default message
StringID severity; ///< Info / Warning / Error / Fatal
uint32 param_value[2]; ///< Values of GRF parameters to show for message and custom_message
};
/** The possible types of a newgrf parameter. */
enum GRFParameterType {
PTYPE_UINT_ENUM, ///< The parameter allows a range of numbers, each of which can have a special name
PTYPE_BOOL, ///< The parameter is either 0 or 1
PTYPE_END, ///< Invalid parameter type
};
/** Information about one grf parameter. */
struct GRFParameterInfo {
GRFParameterInfo(uint nr);
GRFParameterInfo(GRFParameterInfo &info);
GRFTextList name; ///< The name of this parameter
GRFTextList desc; ///< The description of this parameter
GRFParameterType type; ///< The type of this parameter
uint32 min_value; ///< The minimal value this parameter can have
uint32 max_value; ///< The maximal value of this parameter
uint32 def_value; ///< Default value of this parameter
byte param_nr; ///< GRF parameter to store content in
byte first_bit; ///< First bit to use in the GRF parameter
byte num_bit; ///< Number of bits to use for this parameter
SmallMap<uint32, GRFTextList> value_names; ///< Names for each value.
bool complete_labels; ///< True if all values have a label.
uint32 GetValue(struct GRFConfig *config) const;
void SetValue(struct GRFConfig *config, uint32 value);
void Finalize();
};
/** Information about GRF, used in the game and (part of it) in savegames */
struct GRFConfig : ZeroedMemoryAllocator {
GRFConfig(const char *filename = nullptr);
GRFConfig(const GRFConfig &config);
~GRFConfig();
/* Remove the copy assignment, as the default implementation will not do the right thing. */
GRFConfig &operator=(GRFConfig &rhs) = delete;
GRFIdentifier ident; ///< grfid and md5sum to uniquely identify newgrfs
uint8 original_md5sum[16]; ///< MD5 checksum of original file if only a 'compatible' file was loaded
char *filename; ///< Filename - either with or without full path
GRFTextWrapper name; ///< NOSAVE: GRF name (Action 0x08)
GRFTextWrapper info; ///< NOSAVE: GRF info (author, copyright, ...) (Action 0x08)
GRFTextWrapper url; ///< NOSAVE: URL belonging to this GRF.
GRFError *error; ///< NOSAVE: Error/Warning during GRF loading (Action 0x0B)
uint32 version; ///< NOSAVE: Version a NewGRF can set so only the newest NewGRF is shown
uint32 min_loadable_version; ///< NOSAVE: Minimum compatible version a NewGRF can define
uint8 flags; ///< NOSAVE: GCF_Flags, bitset
GRFStatus status; ///< NOSAVE: GRFStatus, enum
uint32 grf_bugs; ///< NOSAVE: bugs in this GRF in this run, @see enum GRFBugs
uint32 param[0x80]; ///< GRF parameters
uint8 num_params; ///< Number of used parameters
uint8 num_valid_params; ///< NOSAVE: Number of valid parameters (action 0x14)
uint8 palette; ///< GRFPalette, bitset
std::vector<GRFParameterInfo *> param_info; ///< NOSAVE: extra information about the parameters
bool has_param_defaults; ///< NOSAVE: did this newgrf specify any defaults for it's parameters
struct GRFConfig *next; ///< NOSAVE: Next item in the linked list
void CopyParams(const GRFConfig &src);
const char *GetTextfile(TextfileType type) const;
const char *GetName() const;
const char *GetDescription() const;
const char *GetURL() const;
void SetParameterDefaults();
void SetSuitablePalette();
void FinalizeParameterInfo();
};
/** Method to find GRFs using FindGRFConfig */
enum FindGRFConfigMode {
FGCM_EXACT, ///< Only find Grfs matching md5sum
FGCM_COMPATIBLE, ///< Find best compatible Grf wrt. desired_version
FGCM_NEWEST, ///< Find newest Grf
FGCM_NEWEST_VALID,///< Find newest Grf, ignoring Grfs with GCF_INVALID set
FGCM_ANY, ///< Use first found
};
extern GRFConfig *_all_grfs; ///< First item in list of all scanned NewGRFs
extern GRFConfig *_grfconfig; ///< First item in list of current GRF set up
extern GRFConfig *_grfconfig_newgame; ///< First item in list of default GRF set up
extern GRFConfig *_grfconfig_static; ///< First item in list of static GRF set up
extern uint _missing_extra_graphics; ///< Number of sprites provided by the fallback extra GRF, i.e. missing in the baseset.
/** Callback for NewGRF scanning. */
struct NewGRFScanCallback {
/** Make sure the right destructor gets called. */
virtual ~NewGRFScanCallback() {}
/** Called whenever the NewGRF scan completed. */
virtual void OnNewGRFsScanned() = 0;
};
size_t GRFGetSizeOfDataSection(FILE *f);
void ScanNewGRFFiles(NewGRFScanCallback *callback);
const GRFConfig *FindGRFConfig(uint32 grfid, FindGRFConfigMode mode, const uint8 *md5sum = nullptr, uint32 desired_version = 0);
GRFConfig *GetGRFConfig(uint32 grfid, uint32 mask = 0xFFFFFFFF);
GRFConfig **CopyGRFConfigList(GRFConfig **dst, const GRFConfig *src, bool init_only);
void AppendStaticGRFConfigs(GRFConfig **dst);
void AppendToGRFConfigList(GRFConfig **dst, GRFConfig *el);
void ClearGRFConfigList(GRFConfig **config);
void ResetGRFConfig(bool defaults);
GRFListCompatibility IsGoodGRFConfigList(GRFConfig *grfconfig);
bool FillGRFDetails(GRFConfig *config, bool is_static, Subdirectory subdir = NEWGRF_DIR);
char *GRFBuildParamList(char *dst, const GRFConfig *c, const char *last);
/* In newgrf_gui.cpp */
void ShowNewGRFSettings(bool editable, bool show_params, bool exec_changes, GRFConfig **config);
void UpdateNewGRFScanStatus(uint num, const char *name);
void UpdateNewGRFConfigPalette(int32 new_value = 0);
#endif /* NEWGRF_CONFIG_H */
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