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-rw-r--r--src/newgrf.cpp7
1 files changed, 6 insertions, 1 deletions
diff --git a/src/newgrf.cpp b/src/newgrf.cpp
index 6d4f1a333..4d0982d93 100644
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -1648,7 +1648,12 @@ static void NewSpriteGroup(byte *buf, int len)
/* The first var adjust doesn't have an operation specified, so we set it to add. */
adjust->operation = group->g.determ.num_adjusts == 1 ? DSGA_OP_ADD : (DeterministicSpriteGroupAdjustOperation)grf_load_byte(&buf);
adjust->variable = grf_load_byte(&buf);
- adjust->parameter = IS_BYTE_INSIDE(adjust->variable, 0x60, 0x80) ? grf_load_byte(&buf) : 0;
+ if (adjust->variable == 0x7E) {
+ /* Link subroutine group */
+ adjust->subroutine = GetGroupFromGroupID(setid, type, grf_load_byte(&buf));
+ } else {
+ adjust->parameter = IS_BYTE_INSIDE(adjust->variable, 0x60, 0x80) ? grf_load_byte(&buf) : 0;
+ }
varadjust = grf_load_byte(&buf);
adjust->shift_num = GB(varadjust, 0, 5);