Cleanup: Use std::vector in RealSpriteGroup.

(cherry picked from commit f785a70a2b)

src/newgrf.cpp

@@ -5326,23 +5326,18 @@ static void NewSpriteGroup(ByteReader *buf)
 					group->nfo_line = _cur.nfo_line;
 					act_group = group;
 
-					group->num_loaded  = num_loaded;
-					group->num_loading = num_loading;
-					if (num_loaded  > 0) group->loaded = CallocT<const SpriteGroup*>(num_loaded);
-					if (num_loading > 0) group->loading = CallocT<const SpriteGroup*>(num_loading);
-
 					grfmsg(6, "NewSpriteGroup: New SpriteGroup 0x%02X, %u loaded, %u loading",
 							setid, num_loaded, num_loading);
 
 					for (uint i = 0; i < num_loaded; i++) {
 						uint16 spriteid = buf->ReadWord();
-						group->loaded[i] = CreateGroupFromGroupID(feature, setid, type, spriteid);
+						group->loaded.push_back(CreateGroupFromGroupID(feature, setid, type, spriteid));
 						grfmsg(8, "NewSpriteGroup: + rg->loaded[%i]  = subset %u", i, spriteid);
 					}
 
 					for (uint i = 0; i < num_loading; i++) {
 						uint16 spriteid = buf->ReadWord();
-						group->loading[i] = CreateGroupFromGroupID(feature, setid, type, spriteid);
+						group->loading.push_back(CreateGroupFromGroupID(feature, setid, type, spriteid));
 						grfmsg(8, "NewSpriteGroup: + rg->loading[%i] = subset %u", i, spriteid);
 					}
 

src/newgrf_airport.cpp

@@ -223,8 +223,8 @@ void AirportOverrideManager::SetEntitySpec(AirportSpec *as)
 {
 	/* Airport action 2s should always have only 1 "loaded" state, but some
 	 * times things don't follow the spec... */
-	if (group->num_loaded > 0) return group->loaded[0];
-	if (group->num_loading > 0) return group->loading[0];
+	if (!group->loaded.empty())  return group->loaded[0];
+	if (!group->loading.empty()) return group->loading[0];
 
 	return nullptr;
 }

src/newgrf_canal.cpp

@@ -111,7 +111,7 @@ struct CanalResolverObject : public ResolverObject {
 
 /* virtual */ const SpriteGroup *CanalResolverObject::ResolveReal(const RealSpriteGroup *group) const
 {
-	if (group->num_loaded == 0) return nullptr;
+	if (group->loaded.empty()) return nullptr;
 
 	return group->loaded[0];
 }

src/newgrf_cargo.cpp

@@ -29,8 +29,8 @@ struct CargoResolverObject : public ResolverObject {
 {
 	/* Cargo action 2s should always have only 1 "loaded" state, but some
 	 * times things don't follow the spec... */
-	if (group->num_loaded > 0) return group->loaded[0];
-	if (group->num_loading > 0) return group->loading[0];
+	if (!group->loaded.empty())  return group->loaded[0];
+	if (!group->loading.empty()) return group->loading[0];
 
 	return nullptr;
 }

src/newgrf_engine.cpp

@@ -1162,14 +1162,14 @@ static uint32 VehicleGetVariable(Vehicle *v, const VehicleScopeResolver *object,
 	const Vehicle *v = this->self_scope.v;
 
 	if (v == nullptr) {
-		if (group->num_loading > 0) return group->loading[0];
-		if (group->num_loaded  > 0) return group->loaded[0];
+		if (!group->loading.empty()) return group->loading[0];
+		if (!group->loaded.empty())  return group->loaded[0];
 		return nullptr;
 	}
 
 	bool in_motion = !v->First()->current_order.IsType(OT_LOADING);
 
-	uint totalsets = in_motion ? group->num_loaded : group->num_loading;
+	uint totalsets = in_motion ? (uint)group->loaded.size() : (uint)group->loading.size();
 
 	if (totalsets == 0) return nullptr;
 

src/newgrf_generic.cpp

@@ -150,7 +150,7 @@ void AddGenericCallback(uint8 feature, const GRFFile *file, const SpriteGroup *g
 
 /* virtual */ const SpriteGroup *GenericResolverObject::ResolveReal(const RealSpriteGroup *group) const
 {
-	if (group->num_loaded == 0) return nullptr;
+	if (group->loaded.empty()) return nullptr;
 
 	return group->loaded[0];
 }

src/newgrf_railtype.cpp

@@ -60,8 +60,8 @@
 
 /* virtual */ const SpriteGroup *RailTypeResolverObject::ResolveReal(const RealSpriteGroup *group) const
 {
-	if (group->num_loading > 0) return group->loading[0];
-	if (group->num_loaded  > 0) return group->loaded[0];
+	if (!group->loading.empty()) return group->loading[0];
+	if (!group->loaded.empty())  return group->loaded[0];
 	return nullptr;
 }
 

src/newgrf_roadtype.cpp

@@ -60,8 +60,8 @@
 
 /* virtual */ const SpriteGroup *RoadTypeResolverObject::ResolveReal(const RealSpriteGroup *group) const
 {
-	if (group->num_loading > 0) return group->loading[0];
-	if (group->num_loaded  > 0) return group->loaded[0];
+	if (!group->loading.empty()) return group->loading[0];
+	if (!group->loaded.empty())  return group->loaded[0];
 	return nullptr;
 }
 

src/newgrf_spritegroup.cpp

@@ -56,12 +56,6 @@ TemporaryStorageArray<int32, 0x110> _temp_store;
 	}
 }
 
-RealSpriteGroup::~RealSpriteGroup()
-{
-	free(this->loaded);
-	free(this->loading);
-}
-
 DeterministicSpriteGroup::~DeterministicSpriteGroup()
 {
 	free(this->adjusts);

src/newgrf_spritegroup.h

@@ -78,7 +78,6 @@ public:
  * groups. */
 struct RealSpriteGroup : SpriteGroup {
 	RealSpriteGroup() : SpriteGroup(SGT_REAL) {}
-	~RealSpriteGroup();
 
 	/* Loaded = in motion, loading = not moving
 	 * Each group contains several spritesets, for various loading stages */
@@ -87,10 +86,8 @@ struct RealSpriteGroup : SpriteGroup {
 	 * with small amount of cargo whilst loading is for stations with a lot
 	 * of da stuff. */
 
-	byte num_loaded;       ///< Number of loaded groups
-	byte num_loading;      ///< Number of loading groups
-	const SpriteGroup **loaded;  ///< List of loaded groups (can be SpriteIDs or Callback results)
-	const SpriteGroup **loading; ///< List of loading groups (can be SpriteIDs or Callback results)
+	std::vector<const SpriteGroup *> loaded;  ///< List of loaded groups (can be SpriteIDs or Callback results)
+	std::vector<const SpriteGroup *> loading; ///< List of loading groups (can be SpriteIDs or Callback results)
 
 protected:
 	const SpriteGroup *Resolve(ResolverObject &object) const;

src/newgrf_station.cpp

@@ -523,13 +523,13 @@ uint32 Waypoint::GetNewGRFVariable(const ResolverObject &object, byte variable,
 	cargo = std::min(0xfffu, cargo);
 
 	if (cargo > this->station_scope.statspec->cargo_threshold) {
-		if (group->num_loading > 0) {
-			uint set = ((cargo - this->station_scope.statspec->cargo_threshold) * group->num_loading) / (4096 - this->station_scope.statspec->cargo_threshold);
+		if (!group->loading.empty()) {
+			uint set = ((cargo - this->station_scope.statspec->cargo_threshold) * (uint)group->loading.size()) / (4096 - this->station_scope.statspec->cargo_threshold);
 			return group->loading[set];
 		}
 	} else {
-		if (group->num_loaded > 0) {
-			uint set = (cargo * group->num_loaded) / (this->station_scope.statspec->cargo_threshold + 1);
+		if (!group->loaded.empty()) {
+			uint set = (cargo * (uint)group->loaded.size()) / (this->station_scope.statspec->cargo_threshold + 1);
 			return group->loaded[set];
 		}
 	}