newgrf_act0_roadvehs.cpp

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/*
 * This file is part of OpenTTD.
 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */
 
#include "../stdafx.h"
#include "../debug.h"
#include "../newgrf_cargo.h"
#include "../newgrf_engine.h"
#include "../newgrf_sound.h"
#include "../vehicle_base.h"
#include "newgrf_bytereader.h"
#include "newgrf_internal_vehicle.h"
#include "newgrf_internal.h"
 
#include "../safeguards.h"
 
static ChangeInfoResult RoadVehicleChangeInfo(uint first, uint last, int prop, ByteReader &buf)
{
  ChangeInfoResult ret = CIR_SUCCESS;
 
  for (uint id = first; id < last; ++id) {
    Engine *e = GetNewEngine(_cur.grffile, VEH_ROAD, id);
    if (e == nullptr) return CIR_INVALID_ID; // No engine could be allocated, so neither can any next vehicles
 
    EngineInfo *ei = &e->info;
    RoadVehicleInfo *rvi = &e->u.road;
 
    switch (prop) {
      case 0x05: // Road/tram type
        /* RoadTypeLabel is looked up later after the engine's road/tram
         * flag is set, however 0 means the value has not been set. */
        _gted[e->index].roadtramtype = buf.ReadByte() + 1;
        break;
 
      case 0x08: // Speed (1 unit is 0.5 kmh)
        rvi->max_speed = buf.ReadByte();
        break;
 
      case PROP_ROADVEH_RUNNING_COST_FACTOR: // 0x09 Running cost factor
        rvi->running_cost = buf.ReadByte();
        break;
 
      case 0x0A: // Running cost base
        ConvertTTDBasePrice(buf.ReadDWord(), "RoadVehicleChangeInfo", &rvi->running_cost_class);
        break;
 
      case 0x0E: { // Sprite ID
        uint8_t spriteid = buf.ReadByte();
        uint8_t orig_spriteid = spriteid;
 
        /* cars have different custom id in the GRF file */
        if (spriteid == 0xFF) spriteid = 0xFD;
 
        if (spriteid < 0xFD) spriteid >>= 1;
 
        if (IsValidNewGRFImageIndex<VEH_ROAD>(spriteid)) {
          rvi->image_index = spriteid;
        } else {
          GrfMsg(1, "RoadVehicleChangeInfo: Invalid Sprite {} specified, ignoring", orig_spriteid);
          rvi->image_index = 0;
        }
        break;
      }
 
      case PROP_ROADVEH_CARGO_CAPACITY: // 0x0F Cargo capacity
        rvi->capacity = buf.ReadByte();
        break;
 
      case 0x10: { // Cargo type
        _gted[e->index].defaultcargo_grf = _cur.grffile;
        uint8_t ctype = buf.ReadByte();
 
        if (ctype == 0xFF) {
          /* 0xFF is specified as 'use first refittable' */
          ei->cargo_type = INVALID_CARGO;
        } else {
          /* Use translated cargo. Might result in INVALID_CARGO (first refittable), if cargo is not defined. */
          ei->cargo_type = GetCargoTranslation(ctype, _cur.grffile);
          if (ei->cargo_type == INVALID_CARGO) GrfMsg(2, "RoadVehicleChangeInfo: Invalid cargo type {}, using first refittable", ctype);
        }
        ei->cargo_label = CT_INVALID;
        break;
      }
 
      case PROP_ROADVEH_COST_FACTOR: // 0x11 Cost factor
        rvi->cost_factor = buf.ReadByte();
        break;
 
      case 0x12: // SFX
        rvi->sfx = GetNewGRFSoundID(_cur.grffile, buf.ReadByte());
        break;
 
      case PROP_ROADVEH_POWER: // Power in units of 10 HP.
        rvi->power = buf.ReadByte();
        break;
 
      case PROP_ROADVEH_WEIGHT: // Weight in units of 1/4 tons.
        rvi->weight = buf.ReadByte();
        break;
 
      case PROP_ROADVEH_SPEED: // Speed in mph/0.8
        _gted[e->index].rv_max_speed = buf.ReadByte();
        break;
 
      case 0x16: { // Cargoes available for refitting
        uint32_t mask = buf.ReadDWord();
        _gted[e->index].UpdateRefittability(mask != 0);
        ei->refit_mask = TranslateRefitMask(mask);
        _gted[e->index].defaultcargo_grf = _cur.grffile;
        break;
      }
 
      case 0x17: { // Callback mask
        auto mask = ei->callback_mask.base();
        SB(mask, 0, 8, buf.ReadByte());
        ei->callback_mask = VehicleCallbackMasks{mask};
        break;
      }
 
      case PROP_ROADVEH_TRACTIVE_EFFORT: // Tractive effort coefficient in 1/256.
        rvi->tractive_effort = buf.ReadByte();
        break;
 
      case 0x19: // Air drag
        rvi->air_drag = buf.ReadByte();
        break;
 
      case 0x1A: // Refit cost
        ei->refit_cost = buf.ReadByte();
        break;
 
      case 0x1B: // Retire vehicle early
        ei->retire_early = buf.ReadByte();
        break;
 
      case 0x1C: // Miscellaneous flags
        ei->misc_flags = static_cast<EngineMiscFlags>(buf.ReadByte());
        _loaded_newgrf_features.has_2CC |= ei->misc_flags.Test(EngineMiscFlag::Uses2CC);
        break;
 
      case 0x1D: // Cargo classes allowed
        _gted[e->index].cargo_allowed = CargoClasses{buf.ReadWord()};
        _gted[e->index].UpdateRefittability(_gted[e->index].cargo_allowed.Any());
        _gted[e->index].defaultcargo_grf = _cur.grffile;
        break;
 
      case 0x1E: // Cargo classes disallowed
        _gted[e->index].cargo_disallowed = CargoClasses{buf.ReadWord()};
        _gted[e->index].UpdateRefittability(false);
        break;
 
      case 0x1F: // Long format introduction date (days since year 0)
        ei->base_intro = TimerGameCalendar::Date(buf.ReadDWord());
        break;
 
      case 0x20: // Alter purchase list sort order
        AlterVehicleListOrder(e->index, buf.ReadExtendedByte());
        break;
 
      case 0x21: // Visual effect
        rvi->visual_effect = buf.ReadByte();
        /* Avoid accidentally setting visual_effect to the default value
         * Since bit 6 (disable effects) is set anyways, we can safely erase some bits. */
        if (rvi->visual_effect == VE_DEFAULT) {
          assert(HasBit(rvi->visual_effect, VE_DISABLE_EFFECT));
          SB(rvi->visual_effect, VE_TYPE_START, VE_TYPE_COUNT, 0);
        }
        break;
 
      case PROP_ROADVEH_CARGO_AGE_PERIOD: // 0x22 Cargo aging period
        ei->cargo_age_period = buf.ReadWord();
        break;
 
      case PROP_ROADVEH_SHORTEN_FACTOR: // 0x23 Shorter vehicle
        rvi->shorten_factor = buf.ReadByte();
        break;
 
      case 0x24:   // CTT refit include list
      case 0x25: { // CTT refit exclude list
        uint8_t count = buf.ReadByte();
        _gted[e->index].UpdateRefittability(prop == 0x24 && count != 0);
        if (prop == 0x24) _gted[e->index].defaultcargo_grf = _cur.grffile;
        CargoTypes &ctt = prop == 0x24 ? _gted[e->index].ctt_include_mask : _gted[e->index].ctt_exclude_mask;
        ctt = 0;
        while (count--) {
          CargoType ctype = GetCargoTranslation(buf.ReadByte(), _cur.grffile);
          if (IsValidCargoType(ctype)) SetBit(ctt, ctype);
        }
        break;
      }
 
      case 0x26: // Engine variant
        ei->variant_id = static_cast<EngineID>(buf.ReadWord());
        break;
 
      case 0x27: // Extra miscellaneous flags
        ei->extra_flags = static_cast<ExtraEngineFlags>(buf.ReadDWord());
        break;
 
      case 0x28: { // Callback additional mask
        auto mask = ei->callback_mask.base();
        SB(mask, 8, 8, buf.ReadByte());
        ei->callback_mask = VehicleCallbackMasks{mask};
        break;
      }
 
      case 0x29: // Cargo classes required for a refit.
        _gted[e->index].cargo_allowed_required = CargoClasses{buf.ReadWord()};
        break;
 
      case 0x2A: // Badge list
        e->badges = ReadBadgeList(buf, GSF_ROADVEHICLES);
        break;
 
      default:
        ret = CommonVehicleChangeInfo(ei, prop, buf);
        break;
    }
  }
 
  return ret;
}
 
template <> ChangeInfoResult GrfChangeInfoHandler<GSF_ROADVEHICLES>::Reserve(uint, uint, int, ByteReader &) { return CIR_UNHANDLED; }
template <> ChangeInfoResult GrfChangeInfoHandler<GSF_ROADVEHICLES>::Activation(uint first, uint last, int prop, ByteReader &buf) { return RoadVehicleChangeInfo(first, last, prop, buf); }