diff options
| -rw-r--r-- | src/newgrf.cpp | 13 | ||||
| -rw-r--r-- | src/newgrf_config.cpp | 4 | ||||
| -rw-r--r-- | src/newgrf_config.h | 1 |
3 files changed, 17 insertions, 1 deletions
diff --git a/src/newgrf.cpp b/src/newgrf.cpp index 60ede9a40..5b967d5ea 100644 --- a/src/newgrf.cpp +++ b/src/newgrf.cpp @@ -5919,6 +5919,18 @@ static bool ChangeGRFDescription(byte langid, const char *str) return true; } +/** Callback function for 'INFO'->'NPAR' to set the number of valid parameters. */ +static bool ChangeGRFNumUsedParams(size_t len, ByteReader *buf) +{ + if (len != 1) { + grfmsg(2, "StaticGRFInfo: expected only 1 byte for 'INFO'->'NPAR' but got " PRINTF_SIZE ", ignoring this field", len); + buf->Skip(len); + } else { + _cur_grfconfig->num_valid_params = min(buf->ReadByte(), lengthof(_cur_grfconfig->param)); + } + return true; +} + typedef bool (*DataHandler)(size_t, ByteReader *); ///< Type of callback function for binary nodes typedef bool (*TextHandler)(byte, const char *str); ///< Type of callback function for text nodes typedef bool (*BranchHandler)(ByteReader *); ///< Type of callback function for branch nodes @@ -6005,6 +6017,7 @@ struct AllowedSubtags { AllowedSubtags _tags_info[] = { AllowedSubtags('NAME', ChangeGRFName), AllowedSubtags('DESC', ChangeGRFDescription), + AllowedSubtags('NPAR', ChangeGRFNumUsedParams), AllowedSubtags() }; diff --git a/src/newgrf_config.cpp b/src/newgrf_config.cpp index 74c526b93..d7769a394 100644 --- a/src/newgrf_config.cpp +++ b/src/newgrf_config.cpp @@ -26,7 +26,8 @@ * @param filename Set the filename of this GRFConfig to filename. The argument * is copied so the original string isn't needed after the constructor. */ -GRFConfig::GRFConfig(const char *filename) +GRFConfig::GRFConfig(const char *filename) : + num_valid_params(lengthof(param)) { if (filename != NULL) this->filename = strdup(filename); } @@ -41,6 +42,7 @@ GRFConfig::GRFConfig(const GRFConfig &config) : status(config.status), grf_bugs(config.grf_bugs), num_params(config.num_params), + num_valid_params(config.num_valid_params), windows_paletted(config.windows_paletted) { MemCpyT<uint8>(this->original_md5sum, config.original_md5sum, lengthof(this->original_md5sum)); diff --git a/src/newgrf_config.h b/src/newgrf_config.h index 58e29afec..56131e766 100644 --- a/src/newgrf_config.h +++ b/src/newgrf_config.h @@ -99,6 +99,7 @@ struct GRFConfig : ZeroedMemoryAllocator { 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; ///< Number of valid parameters (action 0x14) bool windows_paletted; ///< Whether the NewGRF is Windows paletted or not struct GRFConfig *next; ///< NOSAVE: Next item in the linked list |