From 7be5422d831d779e22e850645541a8aa2490f48e Mon Sep 17 00:00:00 2001
From: peter1138 <peter1138@openttd.org>
Date: Tue, 3 Oct 2006 09:25:42 +0000
Subject: (svn r6622) - Add support for NewGRF text includes. (Based on
 mart3p's patch)

---
 newgrf_text.c | 10 ++++++++++
 strings.c     | 18 +++++++++++++++---
 2 files changed, 25 insertions(+), 3 deletions(-)

diff --git a/newgrf_text.c b/newgrf_text.c
index 15a3a27ff..621e40325 100644
--- a/newgrf_text.c
+++ b/newgrf_text.c
@@ -257,6 +257,8 @@ StringID AddGRFString(uint32 grfid, uint16 stringid, byte langid_to_add, bool ne
 	return (GRFTAB << TABSIZE) + id;
 }
 
+/* Used to remember the grfid that the last retrieved string came from */
+static uint32 _last_grfid = 0;
 
 /**
  * Returns the index for this stringid associated with its grfID
@@ -264,6 +266,10 @@ StringID AddGRFString(uint32 grfid, uint16 stringid, byte langid_to_add, bool ne
 StringID GetGRFStringID(uint32 grfid, uint16 stringid)
 {
 	uint id;
+
+	/* grfid is zero when we're being called via an include */
+	if (grfid == 0) grfid = _last_grfid;
+
 	for (id = 0; id < _num_grf_texts; id++) {
 		if (_grf_text[id].grfid == grfid && _grf_text[id].stringid == stringid) {
 			return (GRFTAB << TABSIZE) + id;
@@ -280,6 +286,10 @@ char *GetGRFString(char *buff, uint16 stringid)
 	const GRFText *search_text;
 
 	assert(_grf_text[stringid].grfid != 0);
+
+	/* Remember this grfid in case the string has included text */
+	_last_grfid = _grf_text[stringid].grfid;
+
 	/*Search the list of lang-strings of this stringid for current lang */
 	for (search_text = _grf_text[stringid].textholder; search_text != NULL; search_text = search_text->next) {
 		if (search_text->langid == _currentLangID) {
diff --git a/strings.c b/strings.c
index 67669a5e4..7166b28cf 100644
--- a/strings.c
+++ b/strings.c
@@ -172,6 +172,7 @@ static char *GetStringWithArgs(char *buffr, uint string, const int32 *argv)
 {
 	uint index = GB(string,  0, 11);
 	uint tab   = GB(string, 11,  5);
+	char buff[512];
 
 	if (GB(string, 0, 16) == 0) error("!invalid string id 0 in GetString");
 
@@ -190,14 +191,25 @@ static char *GetStringWithArgs(char *buffr, uint string, const int32 *argv)
 		case 15:
 			return GetName(index, buffr);
 
+		case 26:
+			/* Include string within newgrf text (format code 81) */
+			if (HASBIT(index, 10)) {
+				StringID string = GetGRFStringID(0, 0xD000 + GB(index, 0, 10));
+				return GetStringWithArgs(buffr, string, argv);
+			}
+			break;
+
 		case 28:
-			return GetGRFString(buffr, index);
+			GetGRFString(buff, index);
+			return FormatString(buffr, buff, argv, 0);
 
 		case 29:
-			return GetGRFString(buffr, index + 0x800);
+			GetGRFString(buff, index + 0x800);
+			return FormatString(buffr, buff, argv, 0);
 
 		case 30:
-			return GetGRFString(buffr, index + 0x1000);
+			GetGRFString(buff, index + 0x1000);
+			return FormatString(buffr, buff, argv, 0);
 
 		case 31:
 			// dynamic strings. These are NOT to be passed through the formatter,
-- 
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