Cleanup: Use std::vector in DeterministicSpriteGroup.

(cherry picked from commit 1aeaf39954)

src/newgrf.cpp

@@ -5169,16 +5169,13 @@ static void NewSpriteGroup(ByteReader *buf)
 				case 2: group->size = DSG_SIZE_DWORD; varsize = 4; break;
 			}
 
-			static std::vector<DeterministicSpriteGroupAdjust> adjusts;
-			adjusts.clear();
-
 			/* Loop through the var adjusts. Unfortunately we don't know how many we have
 			 * from the outset, so we shall have to keep reallocing. */
 			do {
-				DeterministicSpriteGroupAdjust &adjust = adjusts.emplace_back();
+				DeterministicSpriteGroupAdjust &adjust = group->adjusts.emplace_back();
 
 				/* The first var adjust doesn't have an operation specified, so we set it to add. */
-				adjust.operation = adjusts.size() == 1 ? DSGA_OP_ADD : (DeterministicSpriteGroupAdjustOperation)buf->ReadByte();
+				adjust.operation = group->adjusts.size() == 1 ? DSGA_OP_ADD : (DeterministicSpriteGroupAdjustOperation)buf->ReadByte();
 				adjust.variable  = buf->ReadByte();
 				if (adjust.variable == 0x7E) {
 					/* Link subroutine group */
@@ -5203,10 +5200,6 @@ static void NewSpriteGroup(ByteReader *buf)
 				/* Continue reading var adjusts while bit 5 is set. */
 			} while (HasBit(varadjust, 5));
 
-			group->num_adjusts = (uint)adjusts.size();
-			group->adjusts = MallocT<DeterministicSpriteGroupAdjust>(group->num_adjusts);
-			MemCpyT(group->adjusts, adjusts.data(), group->num_adjusts);
-
 			std::vector<DeterministicSpriteGroupRange> ranges;
 			ranges.resize(buf->ReadByte());
 			for (uint i = 0; i < ranges.size(); i++) {
@@ -5243,27 +5236,20 @@ static void NewSpriteGroup(ByteReader *buf)
 			}
 			assert(target.size() == bounds.size());
 
-			std::vector<DeterministicSpriteGroupRange> optimised;
 			for (uint j = 0; j < bounds.size(); ) {
 				if (target[j] != group->default_group) {
-					DeterministicSpriteGroupRange r;
+					DeterministicSpriteGroupRange &r = group->ranges.emplace_back();
 					r.group = target[j];
 					r.low = bounds[j];
 					while (j < bounds.size() && target[j] == r.group) {
 						j++;
 					}
 					r.high = j < bounds.size() ? bounds[j] - 1 : UINT32_MAX;
-					optimised.push_back(r);
 				} else {
 					j++;
 				}
 			}
 
-			group->num_ranges = (uint)optimised.size(); // cast is safe, there should never be 2**31 elements here
-			if (group->num_ranges > 0) {
-				group->ranges = MallocT<DeterministicSpriteGroupRange>(group->num_ranges);
-				MemCpyT(group->ranges, &optimised.front(), group->num_ranges);
-			}
 			break;
 		}
 

src/newgrf_spritegroup.cpp

@@ -56,12 +56,6 @@ TemporaryStorageArray<int32, 0x110> _temp_store;
 	}
 }
 
-DeterministicSpriteGroup::~DeterministicSpriteGroup()
-{
-	free(this->adjusts);
-	free(this->ranges);
-}
-
 RandomizedSpriteGroup::~RandomizedSpriteGroup()
 {
 	free(this->groups);
@@ -207,8 +201,8 @@ const SpriteGroup *DeterministicSpriteGroup::Resolve(ResolverObject &object) con
 
 	ScopeResolver *scope = object.GetScope(this->var_scope);
 
-	for (i = 0; i < this->num_adjusts; i++) {
-		DeterministicSpriteGroupAdjust *adjust = &this->adjusts[i];
+	for (i = 0; i < this->adjusts.size(); i++) {
+		const DeterministicSpriteGroupAdjust *adjust = &this->adjusts[i];
 
 		/* Try to get the variable. We shall assume it is available, unless told otherwise. */
 		GetVariableExtra extra(adjust->and_mask << adjust->shift_num);
@@ -253,16 +247,16 @@ const SpriteGroup *DeterministicSpriteGroup::Resolve(ResolverObject &object) con
 		return &nvarzero;
 	}
 
-	if (this->num_ranges > 4) {
-		DeterministicSpriteGroupRange *lower = std::lower_bound(this->ranges + 0, this->ranges + this->num_ranges, value, RangeHighComparator);
-		if (lower != this->ranges + this->num_ranges && lower->low <= value) {
+	if (this->ranges.size() > 4) {
+		const auto &lower = std::lower_bound(this->ranges.begin(), this->ranges.end(), value, RangeHighComparator);
+		if (lower != this->ranges.end() && lower->low <= value) {
 			assert(lower->low <= value && value <= lower->high);
 			return SpriteGroup::Resolve(lower->group, object, false);
 		}
 	} else {
-		for (i = 0; i < this->num_ranges; i++) {
-			if (this->ranges[i].low <= value && value <= this->ranges[i].high) {
-				return SpriteGroup::Resolve(this->ranges[i].group, object, false);
+		for (const auto &range : this->ranges) {
+			if (range.low <= value && value <= range.high) {
+				return SpriteGroup::Resolve(range.group, object, false);
 			}
 		}
 	}

src/newgrf_spritegroup.h

@@ -166,15 +166,12 @@ struct DeterministicSpriteGroupRange {
 
 struct DeterministicSpriteGroup : SpriteGroup {
 	DeterministicSpriteGroup() : SpriteGroup(SGT_DETERMINISTIC) {}
-	~DeterministicSpriteGroup();
 
 	VarSpriteGroupScope var_scope;
 	DeterministicSpriteGroupSize size;
-	uint num_adjusts;
-	uint num_ranges;
 	bool calculated_result;
-	DeterministicSpriteGroupAdjust *adjusts;
-	DeterministicSpriteGroupRange *ranges; // Dynamically allocated
+	std::vector<DeterministicSpriteGroupAdjust> adjusts;
+	std::vector<DeterministicSpriteGroupRange> ranges; // Dynamically allocated
 
 	/* Dynamically allocated, this is the sole owner */
 	const SpriteGroup *default_group;