Function LoadOldVehicle

src/saveload/oldloader_sl.cpp:1258–1391

* Load the vehicles of an old style savegame. * @param ls State (buffer) of the currently loaded game. * @param num The number of vehicles to load. * @return True iff loading went without problems. */

 * @return True iff loading went without problems.
 */
bool LoadOldVehicle(LoadgameState &ls, int num)
{
	/* Read the TTDPatch flags, because we need some info from it */
	ReadTTDPatchFlags(ls);

	for (uint i = 0; i < ls.vehicle_multiplier; i++) {
		_current_vehicle_id = num * ls.vehicle_multiplier + i;

		Vehicle *v;

		if (_savegame_type == SGT_TTO) {
			uint type = ReadByte(ls);
			switch (type) {
				default: return false;
				case 0x00 /* VEH_INVALID  */: v = nullptr;                                        break;
				case 0x25 /* MONORAIL     */:
				case 0x20 /* VEH_TRAIN    */: v = new (VehicleID(_current_vehicle_id)) Train();           break;
				case 0x21 /* VEH_ROAD     */: v = new (VehicleID(_current_vehicle_id)) RoadVehicle();     break;
				case 0x22 /* VEH_SHIP     */: v = new (VehicleID(_current_vehicle_id)) Ship();            break;
				case 0x23 /* VEH_AIRCRAFT */: v = new (VehicleID(_current_vehicle_id)) Aircraft();        break;
				case 0x24 /* VEH_EFFECT   */: v = new (VehicleID(_current_vehicle_id)) EffectVehicle();   break;
				case 0x26 /* VEH_DISASTER */: v = new (VehicleID(_current_vehicle_id)) DisasterVehicle(); break;
			}

			if (!LoadChunk(ls, v, vehicle_chunk)) return false;
			if (v == nullptr) continue;
			v->refit_cap = v->cargo_cap;

			SpriteID sprite = v->sprite_cache.sprite_seq.seq[0].sprite;
			/* no need to override other sprites */
			if (IsInsideMM(sprite, 1460, 1465)) {
				sprite += 580; // aircraft smoke puff
			} else if (IsInsideMM(sprite, 2096, 2115)) {
				sprite += 977; // special effects part 1
			} else if (IsInsideMM(sprite, 2396, 2436)) {
				sprite += 1305; // special effects part 2
			} else if (IsInsideMM(sprite, 2516, 2539)) {
				sprite += 1385; // rotor or disaster-related vehicles
			}
			v->sprite_cache.sprite_seq.seq[0].sprite = sprite;

			switch (v->type) {
				case VEH_TRAIN: {
					static const uint8_t spriteset_rail[] = {
						  0,   2,   4,   4,   8,  10,  12,  14,  16,  18,  20,  22,  40,  42,  44,  46,
						 48,  52,  54,  66,  68,  70,  72,  74,  76,  78,  80,  82,  84,  86, 120, 122,
						124, 126, 128, 130, 132, 134, 136, 138, 140
					};
					if (v->spritenum / 2 >= lengthof(spriteset_rail)) return false;
					v->spritenum = spriteset_rail[v->spritenum / 2]; // adjust railway sprite set offset
					break;
				}

				case VEH_ROAD:
					if (v->spritenum >= 22) v->spritenum += 12;
					break;

				case VEH_SHIP: