Debug: Show if action 2s have been modified by action 6 in debug window

src/newgrf.cpp

@@ -423,6 +423,7 @@ struct GRFLocation {
 static btree::btree_map<GRFLocation, SpriteID> _grm_sprites;
 typedef btree::btree_map<GRFLocation, byte*> GRFLineToSpriteOverride;
 static GRFLineToSpriteOverride _grf_line_to_action6_sprite_override;
+static bool _action6_override_active = false;
 
 /**
  * DEBUG() function dedicated to newGRF debugging messages
@@ -7594,6 +7595,7 @@ static void NewSpriteGroup(ByteReader *buf)
 			DeterministicSpriteGroup *group = new DeterministicSpriteGroup();
 			group->nfo_line = _cur.nfo_line;
 			group->feature = feature;
+			if (_action6_override_active) group->sg_flags |= SGF_ACTION6;
 			act_group = group;
 			group->var_scope = HasBit(type, 1) ? VSG_SCOPE_PARENT : VSG_SCOPE_SELF;
 
@@ -7714,6 +7716,7 @@ static void NewSpriteGroup(ByteReader *buf)
 			assert(RandomizedSpriteGroup::CanAllocateItem());
 			RandomizedSpriteGroup *group = new RandomizedSpriteGroup();
 			group->nfo_line = _cur.nfo_line;
+			if (_action6_override_active) group->sg_flags |= SGF_ACTION6;
 			act_group = group;
 			group->var_scope = HasBit(type, 1) ? VSG_SCOPE_PARENT : VSG_SCOPE_SELF;
 
@@ -7821,6 +7824,7 @@ static void NewSpriteGroup(ByteReader *buf)
 					assert(RealSpriteGroup::CanAllocateItem());
 					RealSpriteGroup *group = new RealSpriteGroup();
 					group->nfo_line = _cur.nfo_line;
+					if (_action6_override_active) group->sg_flags |= SGF_ACTION6;
 					act_group = group;
 
 					for (uint16 spriteid : loaded) {
@@ -7846,6 +7850,7 @@ static void NewSpriteGroup(ByteReader *buf)
 					assert(TileLayoutSpriteGroup::CanAllocateItem());
 					TileLayoutSpriteGroup *group = new TileLayoutSpriteGroup();
 					group->nfo_line = _cur.nfo_line;
+					if (_action6_override_active) group->sg_flags |= SGF_ACTION6;
 					act_group = group;
 
 					/* On error, bail out immediately. Temporary GRF data was already freed */
@@ -7862,6 +7867,7 @@ static void NewSpriteGroup(ByteReader *buf)
 					assert(IndustryProductionSpriteGroup::CanAllocateItem());
 					IndustryProductionSpriteGroup *group = new IndustryProductionSpriteGroup();
 					group->nfo_line = _cur.nfo_line;
+					if (_action6_override_active) group->sg_flags |= SGF_ACTION6;
 					act_group = group;
 					group->version = type;
 					if (type == 0) {
@@ -12715,6 +12721,7 @@ static void DecodeSpecialSprite(byte *buf, uint num, GrfLoadingStage stage)
 	GRFLocation location(_cur.grfconfig->ident.grfid, _cur.nfo_line);
 
 	GRFLineToSpriteOverride::iterator it = _grf_line_to_action6_sprite_override.find(location);
+	_action6_override_active = (it != _grf_line_to_action6_sprite_override.end());
 	if (it == _grf_line_to_action6_sprite_override.end()) {
 		/* No preloaded sprite to work with; read the
 		 * pseudo sprite content. */

src/newgrf_spritegroup.cpp

@@ -798,11 +798,14 @@ void SpriteGroupDumper::DumpSpriteGroup(const SpriteGroup *sg, int padding, uint
 		}
 	});
 
+	char extra_info[64] = "";
+	if (sg->sg_flags & SGF_ACTION6) strecat(extra_info, " (action 6 modified)", lastof(extra_info));
+
 	switch (sg->type) {
 		case SGT_REAL: {
 			const RealSpriteGroup *rsg = (const RealSpriteGroup*)sg;
-			seprintf(this->buffer, lastof(this->buffer), "%*sReal (loaded: %u, loading: %u) [%u]",
-					padding, "", (uint)rsg->loaded.size(), (uint)rsg->loading.size(), sg->nfo_line);
+			seprintf(this->buffer, lastof(this->buffer), "%*sReal (loaded: %u, loading: %u)%s [%u]",
+					padding, "", (uint)rsg->loaded.size(), (uint)rsg->loading.size(), extra_info, sg->nfo_line);
 			print();
 			emit_start();
 			for (size_t i = 0; i < rsg->loaded.size(); i++) {
@@ -849,8 +852,8 @@ void SpriteGroupDumper::DumpSpriteGroup(const SpriteGroup *sg, int padding, uint
 				print();
 				return;
 			}
-			seprintf(this->buffer, lastof(this->buffer), "%*sDeterministic (%s, %s), [%u]",
-					padding, "", _sg_scope_names[dsg->var_scope], _sg_size_names[dsg->size], dsg->nfo_line);
+			seprintf(this->buffer, lastof(this->buffer), "%*sDeterministic (%s, %s)%s [%u]",
+					padding, "", _sg_scope_names[dsg->var_scope], _sg_size_names[dsg->size], extra_info, dsg->nfo_line);
 			print();
 			emit_start();
 			padding += 2;
@@ -890,9 +893,9 @@ void SpriteGroupDumper::DumpSpriteGroup(const SpriteGroup *sg, int padding, uint
 				}
 			}
 
-			seprintf(this->buffer, lastof(this->buffer), "%*sRandom (%s, %s, triggers: %X, count: %X, lowest_randbit: %X, groups: %u) [%u]",
+			seprintf(this->buffer, lastof(this->buffer), "%*sRandom (%s, %s, triggers: %X, count: %X, lowest_randbit: %X, groups: %u)%s [%u]",
 					padding, "", _sg_scope_names[rsg->var_scope], rsg->cmp_mode == RSG_CMP_ANY ? "ANY" : "ALL",
-					rsg->triggers, rsg->count, rsg->lowest_randbit, (uint)rsg->groups.size(), rsg->nfo_line);
+					rsg->triggers, rsg->count, rsg->lowest_randbit, (uint)rsg->groups.size(), extra_info, rsg->nfo_line);
 			print();
 			emit_start();
 			for (const auto &group : (*groups)) {
@@ -911,7 +914,7 @@ void SpriteGroupDumper::DumpSpriteGroup(const SpriteGroup *sg, int padding, uint
 			break;
 		case SGT_TILELAYOUT: {
 			const TileLayoutSpriteGroup *tlsg = (const TileLayoutSpriteGroup*)sg;
-			seprintf(this->buffer, lastof(this->buffer), "%*sTile Layout [%u]", padding, "", sg->nfo_line);
+			seprintf(this->buffer, lastof(this->buffer), "%*sTile Layout%s [%u]", padding, "", extra_info, sg->nfo_line);
 			print();
 			emit_start();
 			padding += 2;

src/newgrf_spritegroup.h

@@ -94,6 +94,12 @@ struct AnalyseCallbackOperation {
 typedef Pool<SpriteGroup, SpriteGroupID, 1024, 1 << 30, PT_DATA> SpriteGroupPool;
 extern SpriteGroupPool _spritegroup_pool;
 
+enum SpriteGroupFlags : uint8 {
+	SGF_NONE                     = 0,
+	SGF_ACTION6                  = 1 << 0,
+};
+DECLARE_ENUM_AS_BIT_SET(SpriteGroupFlags)
+
 /* Common wrapper for all the different sprite group types */
 struct SpriteGroup : SpriteGroupPool::PoolItem<&_spritegroup_pool> {
 protected:
@@ -107,6 +113,7 @@ public:
 	uint32 nfo_line;
 	SpriteGroupType type;
 	GrfSpecFeature feature;
+	SpriteGroupFlags sg_flags = SGF_NONE;
 
 	virtual SpriteID GetResult() const { return 0; }
 	virtual byte GetNumResults() const { return 0; }