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-rw-r--r--src/newgrf_spritegroup.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/src/newgrf_spritegroup.h b/src/newgrf_spritegroup.h
index 6cc801a74..bf72e96ce 100644
--- a/src/newgrf_spritegroup.h
+++ b/src/newgrf_spritegroup.h
@@ -381,6 +381,17 @@ struct ResolverObject {
uint32 (*GetVariable)(const struct ResolverObject*, byte, byte, bool*);
const SpriteGroup *(*ResolveReal)(const struct ResolverObject*, const RealSpriteGroup*);
void (*StorePSA)(struct ResolverObject*, uint, int32);
+
+ /**
+ * Resets the dynamic state of the resolver object.
+ * To be called before resolving an Action-1-2-3 chain.
+ */
+ void ResetState()
+ {
+ this->last_value = 0;
+ this->trigger = 0;
+ this->reseed = 0;
+ }
};
#endif /* NEWGRF_SPRITEGROUP_H */