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-rw-r--r--src/newgrf_spritegroup.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/newgrf_spritegroup.h b/src/newgrf_spritegroup.h
index e01bc2a9e..fc5fcb514 100644
--- a/src/newgrf_spritegroup.h
+++ b/src/newgrf_spritegroup.h
@@ -60,6 +60,8 @@ enum DeterministicSpriteGroupAdjustOperation {
DSGA_OP_AND, ///< a & b
DSGA_OP_OR, ///< a | b
DSGA_OP_XOR, ///< a ^ b
+ DSGA_OP_STO, ///< store a into temporary storage, indexed by b. return a
+ DSGA_OP_RST, ///< return b
};