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-rw-r--r--src/table/control_codes.h24
1 files changed, 23 insertions, 1 deletions
diff --git a/src/table/control_codes.h b/src/table/control_codes.h
index e853ca898..5c1ae73e7 100644
--- a/src/table/control_codes.h
+++ b/src/table/control_codes.h
@@ -6,7 +6,7 @@
/* List of string control codes used for string formatting, displaying, and
* by strgen to generate the language files. */
-enum {
+enum StringControlCode {
SCC_CONTROL_START = 0xE000,
SCC_CONTROL_END = 0xE1FF,
@@ -90,6 +90,28 @@ enum {
SCC_BLACK,
SCC_PREVIOUS_COLOUR,
+ /**
+ * The next variables are part of a NewGRF subsystem for creating text strings.
+ * It uses a "stack" of bytes and reads from there.
+ */
+ SCC_NEWGRF_FIRST,
+ SCC_NEWGRF_PRINT_DWORD = SCC_NEWGRF_FIRST, ///< Read 4 bytes from the stack
+ SCC_NEWGRF_PRINT_SIGNED_WORD, ///< Read 2 bytes from the stack as signed value
+ SCC_NEWGRF_PRINT_SIGNED_BYTE, ///< Read 1 bytes from the stack as signed value
+ SCC_NEWGRF_PRINT_UNSIGNED_WORD, ///< Read 2 bytes from the stack as unsigned value
+ SCC_NEWGRF_PRINT_DWORD_CURRENCY, ///< Read 4 bytes from the stack as currency
+ SCC_NEWGRF_PRINT_STRING_ID, ///< Read 2 bytes from the stack as String ID
+ SCC_NEWGRF_PRINT_DATE, ///< Read 2 bytes from the stack as base 1920 date
+ SCC_NEWGRF_PRINT_MONTH_YEAR, ///< Read 2 bytes from the stack as base 1920 date
+ SCC_NEWGRF_PRINT_WORD_SPEED, ///< Read 2 bytes from the stack as signed speed
+ SCC_NEWGRF_PRINT_WORD_LITRES, ///< Read 2 bytes from the stack as signed litres
+ SCC_NEWGRF_PRINT_QWORD_CURRENCY, ///< Read 8 bytes from the stack as currency
+ SCC_NEWGRF_PUSH_WORD, ///< Pushes 2 bytes onto the stack
+ SCC_NEWGRF_UNPRINT, ///< "Unprints" the given number of bytes from the string
+ SCC_NEWGRF_DISCARD_WORD, ///< Discard the next two bytes
+ SCC_NEWGRF_ROTATE_TOP_4_WORDS, ///< Rotate the top 4 words of the stack (W4 W1 W2 W3)
+ SCC_NEWGRF_LAST = SCC_NEWGRF_ROTATE_TOP_4_WORDS,
+
/* Special printable symbols.
* These are mapped to the original glyphs */
SCC_LESSTHAN = SCC_SPRITE_START + 0x3C,