mirror of https://github.com/OpenTTD/OpenTTD.git
274 lines
8.0 KiB
C++
274 lines
8.0 KiB
C++
/* $Id$ */
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/*
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* This file is part of OpenTTD.
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* 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.
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* 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.
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* 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/>.
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*/
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/** @file ai_tile.cpp Implementation of AITile. */
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#include "ai_tile.hpp"
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#include "ai_map.hpp"
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#include "ai_town.hpp"
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#include "../../station_func.h"
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#include "../../company_func.h"
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#include "../../water_map.h"
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#include "../../clear_map.h"
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#include "../../tree_map.h"
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#include "../../town.h"
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#include "../../landscape.h"
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/* static */ bool AITile::IsBuildable(TileIndex tile)
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{
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if (!::IsValidTile(tile)) return false;
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switch (::GetTileType(tile)) {
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default: return false;
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case MP_CLEAR: return true;
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case MP_TREES: return true;
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case MP_WATER: return IsCoast(tile);
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case MP_ROAD:
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/* Tram bits aren't considered buildable */
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if (::GetRoadTypes(tile) != ROADTYPES_ROAD) return false;
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/* Depots and crossings aren't considered buildable */
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if (::GetRoadTileType(tile) != ROAD_TILE_NORMAL) return false;
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if (CountBits(::GetRoadBits(tile, ROADTYPE_ROAD)) != 1) return false;
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if (::IsRoadOwner(tile, ROADTYPE_ROAD, OWNER_TOWN)) return true;
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if (::IsRoadOwner(tile, ROADTYPE_ROAD, _current_company)) return true;
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return false;
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}
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}
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/* static */ bool AITile::IsBuildableRectangle(TileIndex tile, uint width, uint height)
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{
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uint tx, ty;
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tx = AIMap::GetTileX(tile);
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ty = AIMap::GetTileY(tile);
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for (uint x = tx; x < width + tx; x++) {
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for (uint y = ty; y < height + ty; y++) {
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if (!IsBuildable(AIMap::GetTileIndex(x, y))) return false;
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}
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}
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return true;
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}
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/* static */ bool AITile::IsWaterTile(TileIndex tile)
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{
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if (!::IsValidTile(tile)) return false;
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return ::IsTileType(tile, MP_WATER) && !::IsCoast(tile);
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}
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/* static */ bool AITile::IsCoastTile(TileIndex tile)
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{
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if (!::IsValidTile(tile)) return false;
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return (::IsTileType(tile, MP_WATER) && ::IsCoast(tile)) ||
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(::IsTileType(tile, MP_TREES) && ::GetTreeGround(tile) == TREE_GROUND_SHORE);
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}
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/* static */ bool AITile::IsStationTile(TileIndex tile)
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{
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if (!::IsValidTile(tile)) return false;
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return ::IsTileType(tile, MP_STATION);
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}
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/* static */ bool AITile::IsSteepSlope(Slope slope)
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{
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if ((slope & ~(SLOPE_ELEVATED | SLOPE_STEEP | SLOPE_HALFTILE_MASK)) != 0) return false;
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return ::IsSteepSlope((::Slope)slope);
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}
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/* static */ bool AITile::IsHalftileSlope(Slope slope)
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{
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if ((slope & ~(SLOPE_ELEVATED | SLOPE_STEEP | SLOPE_HALFTILE_MASK)) != 0) return false;
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return ::IsHalftileSlope((::Slope)slope);
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}
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/* static */ bool AITile::HasTreeOnTile(TileIndex tile)
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{
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if (!::IsValidTile(tile)) return false;
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return ::IsTileType(tile, MP_TREES);
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}
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/* static */ bool AITile::IsFarmTile(TileIndex tile)
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{
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if (!::IsValidTile(tile)) return false;
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return (::IsTileType(tile, MP_CLEAR) && ::IsClearGround(tile, CLEAR_FIELDS));
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}
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/* static */ bool AITile::IsRockTile(TileIndex tile)
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{
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if (!::IsValidTile(tile)) return false;
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return (::IsTileType(tile, MP_CLEAR) && ::GetRawClearGround(tile) == ::CLEAR_ROCKS);
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}
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/* static */ bool AITile::IsRoughTile(TileIndex tile)
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{
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if (!::IsValidTile(tile)) return false;
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return (::IsTileType(tile, MP_CLEAR) && ::GetRawClearGround(tile) == ::CLEAR_ROUGH);
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}
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/* static */ bool AITile::IsSnowTile(TileIndex tile)
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{
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if (!::IsValidTile(tile)) return false;
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return (::IsTileType(tile, MP_CLEAR) && ::IsSnowTile(tile));
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}
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/* static */ bool AITile::IsDesertTile(TileIndex tile)
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{
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if (!::IsValidTile(tile)) return false;
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return (::IsTileType(tile, MP_CLEAR) && ::IsClearGround(tile, CLEAR_DESERT));
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}
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/* static */ AITile::Slope AITile::GetSlope(TileIndex tile)
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{
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if (!::IsValidTile(tile)) return SLOPE_INVALID;
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return (Slope)::GetTileSlope(tile, NULL);
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}
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/* static */ AITile::Slope AITile::GetComplementSlope(Slope slope)
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{
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if ((slope & ~SLOPE_ELEVATED) != 0) return SLOPE_INVALID;
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return (Slope)::ComplementSlope((::Slope)slope);
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}
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/* static */ int32 AITile::GetMinHeight(TileIndex tile)
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{
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if (!::IsValidTile(tile)) return -1;
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return ::GetTileZ(tile) / ::TILE_HEIGHT;
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}
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/* static */ int32 AITile::GetMaxHeight(TileIndex tile)
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{
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if (!::IsValidTile(tile)) return -1;
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return ::GetTileMaxZ(tile) / ::TILE_HEIGHT;
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}
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/* static */ int32 AITile::GetCornerHeight(TileIndex tile, Corner corner)
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{
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if (!::IsValidTile(tile) || !::IsValidCorner((::Corner)corner)) return -1;
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uint z;
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::Slope slope = ::GetTileSlope(tile, &z);
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return (z + ::GetSlopeZInCorner(slope, (::Corner)corner)) / ::TILE_HEIGHT;
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}
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/* static */ AICompany::CompanyID AITile::GetOwner(TileIndex tile)
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{
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if (!::IsValidTile(tile)) return AICompany::COMPANY_INVALID;
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if (::IsTileType(tile, MP_HOUSE)) return AICompany::COMPANY_INVALID;
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if (::IsTileType(tile, MP_INDUSTRY)) return AICompany::COMPANY_INVALID;
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return AICompany::ResolveCompanyID((AICompany::CompanyID)(byte)::GetTileOwner(tile));
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}
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/* static */ bool AITile::HasTransportType(TileIndex tile, TransportType transport_type)
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{
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if (!::IsValidTile(tile)) return false;
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return ::TrackStatusToTrackdirBits(::GetTileTrackStatus(tile, (::TransportType)transport_type, UINT32_MAX)) != TRACKDIR_BIT_NONE;
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}
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/* static */ int32 AITile::GetCargoAcceptance(TileIndex tile, CargoID cargo_type, int width, int height, int radius)
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{
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if (!::IsValidTile(tile) || width <= 0 || height <= 0 || radius < 0) return -1;
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CargoArray acceptance = ::GetAcceptanceAroundTiles(tile, width, height, _settings_game.station.modified_catchment ? radius : (int)CA_UNMODIFIED);
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return acceptance[cargo_type];
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}
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/* static */ int32 AITile::GetCargoProduction(TileIndex tile, CargoID cargo_type, int width, int height, int radius)
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{
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if (!::IsValidTile(tile) || width <= 0 || height <= 0 || radius < 0) return -1;
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CargoArray produced = ::GetProductionAroundTiles(tile, width, height, _settings_game.station.modified_catchment ? radius : (int)CA_UNMODIFIED);
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return produced[cargo_type];
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}
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/* static */ int32 AITile::GetDistanceManhattanToTile(TileIndex tile_from, TileIndex tile_to)
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{
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return AIMap::DistanceManhattan(tile_from, tile_to);
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}
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/* static */ int32 AITile::GetDistanceSquareToTile(TileIndex tile_from, TileIndex tile_to)
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{
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return AIMap::DistanceSquare(tile_from, tile_to);
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}
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/* static */ bool AITile::RaiseTile(TileIndex tile, int32 slope)
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{
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EnforcePrecondition(false, tile < ::MapSize());
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return AIObject::DoCommand(tile, slope, 1, CMD_TERRAFORM_LAND);
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}
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/* static */ bool AITile::LowerTile(TileIndex tile, int32 slope)
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{
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EnforcePrecondition(false, tile < ::MapSize());
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return AIObject::DoCommand(tile, slope, 0, CMD_TERRAFORM_LAND);
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}
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/* static */ bool AITile::LevelTiles(TileIndex start_tile, TileIndex end_tile)
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{
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EnforcePrecondition(false, start_tile < ::MapSize());
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EnforcePrecondition(false, end_tile < ::MapSize());
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return AIObject::DoCommand(end_tile, start_tile, 0, CMD_LEVEL_LAND);
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}
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/* static */ bool AITile::DemolishTile(TileIndex tile)
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{
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EnforcePrecondition(false, ::IsValidTile(tile));
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return AIObject::DoCommand(tile, 0, 0, CMD_LANDSCAPE_CLEAR);
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}
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/* static */ bool AITile::PlantTree(TileIndex tile)
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{
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EnforcePrecondition(false, ::IsValidTile(tile));
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return AIObject::DoCommand(tile, UINT_MAX, tile, CMD_PLANT_TREE);
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}
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/* static */ bool AITile::PlantTreeRectangle(TileIndex tile, uint width, uint height)
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{
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EnforcePrecondition(false, ::IsValidTile(tile));
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EnforcePrecondition(false, width >= 1 && width <= 20);
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EnforcePrecondition(false, height >= 1 && height <= 20);
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TileIndex end_tile = tile + ::TileDiffXY(width - 1, height - 1);
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return AIObject::DoCommand(tile, UINT_MAX, end_tile, CMD_PLANT_TREE);
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}
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/* static */ bool AITile::IsWithinTownInfluence(TileIndex tile, TownID town_id)
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{
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return AITown::IsWithinTownInfluence(town_id, tile);
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}
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/* static */ TownID AITile::GetClosestTown(TileIndex tile)
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{
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if (!::IsValidTile(tile)) return INVALID_TOWN;
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return ::ClosestTownFromTile(tile, UINT_MAX)->index;
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}
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