newgrf_act0_canals.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 <https://www.gnu.org/licenses/old-licenses/gpl-2.0>.
 */

 
#include "../stdafx.h"
#include "../debug.h"
#include "newgrf_bytereader.h"
#include "newgrf_internal.h"
 
#include "../safeguards.h"

static ChangeInfoResult CanalChangeInfo(uint first, uint last, int prop, ByteReader &buf)
{
  ChangeInfoResult ret = ChangeInfoResult::Success;
 
  if (last > to_underlying(CanalFeature::End)) {
    GrfMsg(1, "CanalChangeInfo: Canal feature 0x{:02X} is invalid, max {}, ignoring", last, CanalFeature::End);
    return ChangeInfoResult::InvalidId;
  }
 
  for (uint id = first; id < last; ++id) {
    CanalProperties *cp = &_cur_gps.grffile->canal_local_properties[static_cast<CanalFeature>(id)];
 
    switch (prop) {
      case 0x08:
        cp->callback_mask = static_cast<CanalCallbackMasks>(buf.ReadByte());
        break;
 
      case 0x09:
        cp->flags = CanalFeatureFlags{buf.ReadByte()};
        break;
 
      default:
        ret = ChangeInfoResult::Unknown;
        break;
    }
  }
 
  return ret;
}

template <> ChangeInfoResult GrfChangeInfoHandler<GrfSpecFeature::Canals>::Reserve(uint, uint, int, ByteReader &) { return ChangeInfoResult::Unhandled; }
template <> ChangeInfoResult GrfChangeInfoHandler<GrfSpecFeature::Canals>::Activation(uint first, uint last, int prop, ByteReader &buf) { return CanalChangeInfo(first, last, prop, buf); }