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Saveload: Add a label tag field to SaveLoad

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Jonathan G Rennison 2024-07-14 12:11:49 +01:00
parent 159e68c4dc
commit 7ddcf901f5
3 changed files with 19 additions and 7 deletions
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2
src/sl/saveload.cpp
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@ -2277,7 +2277,7 @@ std::vector<SaveLoad> SlTableHeader(const NamedSaveLoadTable &slt, TableHeaderSp
}
/* We don't know this field, so read to nothing. */
saveloads.push_back({ true, saveload_type, ((VarType)type & SLE_FILE_TYPE_MASK) | SLE_VAR_NULL, 1, SL_MIN_VERSION, SL_MAX_VERSION, nullptr, 0, SlXvFeatureTest() });
saveloads.push_back({ true, saveload_type, ((VarType)type & SLE_FILE_TYPE_MASK) | SLE_VAR_NULL, 1, SL_MIN_VERSION, SL_MAX_VERSION, SLTAG_TABLE_UNKNOWN, nullptr, 0, SlXvFeatureTest() });
continue;
}

11
src/sl/saveload.h
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@ -501,7 +501,7 @@ inline constexpr void *SlVarWrapper(void* ptr)
* @param extver SlXvFeatureTest to test (along with from and to) which savegames have the field
* @note In general, it is better to use one of the SLE_* macros below.
*/
#define SLE_GENERAL_X(cmd, base, variable, type, length, from, to, extver) SaveLoad {false, cmd, type, length, from, to, SlVarWrapper<decltype(base::variable), cmd, type, length>((void*)cpp_offsetof(base, variable)), sizeof(base::variable), extver}
#define SLE_GENERAL_X(cmd, base, variable, type, length, from, to, extver) SaveLoad {false, cmd, type, length, from, to, SLTAG_DEFAULT, SlVarWrapper<decltype(base::variable), cmd, type, length>((void*)cpp_offsetof(base, variable)), sizeof(base::variable), extver}
#define SLE_GENERAL(cmd, base, variable, type, length, from, to) SLE_GENERAL_X(cmd, base, variable, type, length, from, to, SlXvFeatureTest())
/**
@ -719,8 +719,8 @@ inline constexpr void *SlVarWrapper(void* ptr)
/** Translate values ingame to different values in the savegame and vv. */
#define SLE_WRITEBYTE(base, variable) SLE_GENERAL(SL_WRITEBYTE, base, variable, 0, 0, SL_MIN_VERSION, SL_MAX_VERSION)
#define SLE_VEH_INCLUDE() {false, SL_VEH_INCLUDE, 0, 0, SL_MIN_VERSION, SL_MAX_VERSION, nullptr, 0, SlXvFeatureTest()}
#define SLE_ST_INCLUDE() {false, SL_ST_INCLUDE, 0, 0, SL_MIN_VERSION, SL_MAX_VERSION, nullptr, 0, SlXvFeatureTest()}
#define SLE_VEH_INCLUDE() {false, SL_VEH_INCLUDE, 0, 0, SL_MIN_VERSION, SL_MAX_VERSION, SLTAG_DEFAULT, nullptr, 0, SlXvFeatureTest()}
#define SLE_ST_INCLUDE() {false, SL_ST_INCLUDE, 0, 0, SL_MIN_VERSION, SL_MAX_VERSION, SLTAG_DEFAULT, nullptr, 0, SlXvFeatureTest()}
/**
* Storage of global simple variables, references (pointers), and arrays.
@ -732,7 +732,7 @@ inline constexpr void *SlVarWrapper(void* ptr)
* @param extver SlXvFeatureTest to test (along with from and to) which savegames have the field
* @note In general, it is better to use one of the SLEG_* macros below.
*/
#define SLEG_GENERAL_X(cmd, variable, type, length, from, to, extver) SaveLoad {true, cmd, type, length, from, to, SlVarWrapper<decltype(variable), cmd, type, length>((void*)&variable), sizeof(variable), extver}
#define SLEG_GENERAL_X(cmd, variable, type, length, from, to, extver) SaveLoad {true, cmd, type, length, from, to, SLTAG_DEFAULT, SlVarWrapper<decltype(variable), cmd, type, length>((void*)&variable), sizeof(variable), extver}
#define SLEG_GENERAL(cmd, variable, type, length, from, to) SLEG_GENERAL_X(cmd, variable, type, length, from, to, SlXvFeatureTest())
/**
@ -896,9 +896,8 @@ inline constexpr void *SlVarWrapper(void* ptr)
* @param length Length of the empty space.
* @param from First savegame version that has the empty space.
* @param to Last savegame version that has the empty space.
* @param extver SlXvFeatureTest to test (along with from and to) which savegames have empty space
*/
#define SLEG_CONDNULL(length, from, to) {true, SL_ARR, SLE_FILE_U8 | SLE_VAR_NULL, length, from, to, (void*)nullptr, SlXvFeatureTest()}
#define SLEG_CONDNULL(length, from, to) SaveLoad {true, SL_ARR, SLE_FILE_U8 | SLE_VAR_NULL, length, from, to, SLTAG_DEFAULT, nullptr, SlXvFeatureTest()}
/**
* Checks whether the savegame is below \a major.\a minor.

13
src/sl/saveload_types.h
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@ -131,6 +131,7 @@ struct SaveLoad {
uint16_t length; ///< (conditional) length of the variable (eg. arrays) (max array size is 65536 elements)
SaveLoadVersion version_from; ///< save/load the variable starting from this savegame version
SaveLoadVersion version_to; ///< save/load the variable until this savegame version
uint16_t label_tag; ///< for labelling purposes
/* NOTE: This element either denotes the address of the variable for a global
* variable, or the offset within a struct which is then bound to a variable
* during runtime. Decision on which one to use is controlled by the function
@ -140,6 +141,18 @@ struct SaveLoad {
SlXvFeatureTest ext_feature_test; ///< extended feature test
};
inline constexpr SaveLoad SLTAG(uint16_t label_tag, SaveLoad save_load)
{
save_load.label_tag = label_tag;
return save_load;
}
enum SaveLoadTags {
SLTAG_DEFAULT,
SLTAG_TABLE_UNKNOWN,
SLTAG_CUSTOM_START,
};
enum NamedSaveLoadFlags : uint8_t {
NSLF_NONE = 0,
NSLF_TABLE_ONLY = 1 << 0,