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-rw-r--r--src/lang/english.txt1
-rw-r--r--src/newgrf.cpp67
2 files changed, 68 insertions, 0 deletions
diff --git a/src/lang/english.txt b/src/lang/english.txt
index 1fa6bae61..1ad03870d 100644
--- a/src/lang/english.txt
+++ b/src/lang/english.txt
@@ -2908,6 +2908,7 @@ STR_NEWGRF_ERROR_UNSET_SWITCH :{STRING} is des
STR_NEWGRF_ERROR_INVALID_PARAMETER :Invalid parameter for {STRING}: parameter {STRING} ({NUM})
STR_NEWGRF_ERROR_LOAD_BEFORE :{STRING} must be loaded before {STRING}.
STR_NEWGRF_ERROR_LOAD_AFTER :{STRING} must be loaded after {STRING}.
+STR_NEWGRF_ERROR_AFTER_TRANSLATED_FILE :the GRF file it was designed to translate
STR_NEWGRF_ADD :{BLACK}Add
STR_NEWGRF_ADD_TIP :{BLACK}Add a NewGRF file to the list
diff --git a/src/newgrf.cpp b/src/newgrf.cpp
index fa217f476..3aa7d5abc 100644
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -3420,6 +3420,72 @@ static void LoadFontGlyph(byte *buf, int len)
}
}
+/* Action 0x13 */
+static void TranslateGRFStrings(byte *buf, int len)
+{
+ /* <13> <grfid> <num-ent> <offset> <text...>
+ *
+ * 4*B grfid The GRFID of the file whose texts are to be translated
+ * B num-ent Number of strings
+ * W offset First text ID
+ * S text... Zero-terminated strings */
+
+ buf++; len--;
+ if (!check_length(len, 7, "TranslateGRFString")) return;
+
+ uint32 grfid = grf_load_dword(&buf);
+ const GRFConfig *c = GetGRFConfig(grfid);
+ if (c == NULL || (c->status != GCS_INITIALISED && c->status != GCS_ACTIVATED)) {
+ grfmsg(7, "GRFID 0x%08x unknown, skipping action 13", BSWAP32(grfid));
+ return;
+ }
+
+ if (c->status == GCS_INITIALISED) {
+ /* If the file is not active but will be activated later, give an error
+ * and disable this file. */
+ GRFError *error = CallocT<GRFError>(1);
+ error->message = STR_NEWGRF_ERROR_LOAD_AFTER;
+ error->data = STR_NEWGRF_ERROR_AFTER_TRANSLATED_FILE;
+ error->severity = STR_NEWGRF_ERROR_MSG_FATAL;
+
+ if (_cur_grfconfig->error != NULL) free(_cur_grfconfig->error);
+ _cur_grfconfig->error = error;
+
+ _cur_grfconfig->status = GCS_DISABLED;
+ _skip_sprites = -1;
+ return;
+ }
+
+ byte num_strings = grf_load_byte(&buf);
+ uint16 first_id = grf_load_word(&buf);
+
+ if (!((first_id >= 0xD000 && first_id + num_strings <= 0xD3FF) || (first_id >= 0xDC00 && first_id + num_strings <= 0xDCFF))) {
+ grfmsg(7, "Attempting to set out-of-range string IDs in action 13 (first: 0x%4X, number: 0x%2X)", first_id, num_strings);
+ return;
+ }
+
+ len -= 7;
+
+ for (uint i = 0; i < num_strings && len > 0; i++) {
+ const char *string = grf_load_string(&buf, len);
+ size_t string_length = strlen(string) + 1;
+
+ len -= (int)string_length;
+
+ if (string_length == 1) {
+ grfmsg(7, "TranslateGRFString: Ignoring empty string.");
+ continue;
+ }
+
+ /* Since no language id is supplied this string has to be added as a
+ * generic string, thus the language id of 0x7F. For this to work
+ * new_scheme has to be true as well. A language id of 0x7F will be
+ * overridden by a non-generic id, so this will not change anything if
+ * a string has been provided specifically for this language. */
+ AddGRFString(grfid, first_id + i, 0x7F, true, string, STR_UNDEFINED);
+ }
+}
+
/* 'Action 0xFF' */
static void GRFDataBlock(byte *buf, int len)
{
@@ -3888,6 +3954,7 @@ static void DecodeSpecialSprite(uint num, GrfLoadingStage stage)
/* 0x10 */ { NULL, NULL, DefineGotoLabel, NULL, NULL, },
/* 0x11 */ { NULL, GRFUnsafe, NULL, NULL, GRFSound, },
/* 0x12 */ { NULL, NULL, NULL, NULL, LoadFontGlyph, },
+ /* 0x13 */ { NULL, NULL, NULL, NULL, TranslateGRFStrings, },
};
byte* buf;