mirror of https://github.com/OpenTTD/OpenTTD
Add: Base files for placing trains in extended depots.
J0anJosep
parent
0e34a5afe2
commit
0619cb633a
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@ -504,6 +504,8 @@ add_files(
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train.h
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train.h
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train_cmd.cpp
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train_cmd.cpp
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train_cmd.h
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train_cmd.h
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train_placement.cpp
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train_placement.h
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train_gui.cpp
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train_gui.cpp
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transparency.h
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transparency.h
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transparency_gui.cpp
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transparency_gui.cpp
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@ -5182,6 +5182,15 @@ STR_ERROR_UNABLE_TO_FIND_APPROPRIATE_DEPOT_TILE :{WHITE}Unable t
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STR_ERROR_DEPOT_TOO_SPREAD_OUT :{WHITE}... depot too spread out
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STR_ERROR_DEPOT_TOO_SPREAD_OUT :{WHITE}... depot too spread out
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STR_ERROR_DEPOT_WRONG_DEPOT_TYPE :Wrong depot type
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STR_ERROR_DEPOT_WRONG_DEPOT_TYPE :Wrong depot type
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STR_ERROR_CAN_T_START_PLATFORM_TYPE :{WHITE}{VEHICLE} can't be started because there is no compatible platform in the depot for this type of train
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STR_ERROR_CAN_T_START_PLATFORM_LONG :{WHITE}{VEHICLE} can't be started because compatible platforms are not long enough
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STR_ERROR_DEPOT_FULL_DEPOT :There is no free depot compatible with this type of vehicle
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###length 5
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STR_ADVICE_PLATFORM_TYPE :{WHITE}{VEHICLE} can't leave depot because there is no compatible platform for this type of train
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STR_ADVICE_PLATFORM_LONG :{WHITE}{VEHICLE} can't leave depot because compatible platforms are not long enough
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STR_ADVICE_VEHICLE_HAS_NO_POWER :{WHITE}{VEHICLE} can't leave depot because it has no power in any tile of the depot
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STR_ADVICE_PLATFORM_FREE_PLATFORM :{WHITE}{VEHICLE} can't leave depot because compatible platforms are occupied
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STR_ADVICE_PLATFORM_SIGNALS :{WHITE}{VEHICLE} can't leave depot because the segments of the compatible free platforms are occupied. Check the signaling of those segments.
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# Depot unbunching related errors
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# Depot unbunching related errors
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STR_ERROR_UNBUNCHING_ONLY_ONE_ALLOWED :{WHITE}... can only have one unbunching order
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STR_ERROR_UNBUNCHING_ONLY_ONE_ALLOWED :{WHITE}... can only have one unbunching order
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@ -21,6 +21,9 @@
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struct Train;
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struct Train;
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static const uint8_t _vehicle_initial_x_fract[4] = {10, 8, 4, 8};
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static const uint8_t _vehicle_initial_y_fract[4] = { 8, 4, 8, 10};
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/** Rail vehicle flags. */
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/** Rail vehicle flags. */
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enum VehicleRailFlags {
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enum VehicleRailFlags {
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VRF_REVERSING = 0,
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VRF_REVERSING = 0,
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@ -355,5 +358,6 @@ protected: // These functions should not be called outside acceleration code.
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bool HasCompatibleDepotTile(TileIndex tile, const Train *t);
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bool HasCompatibleDepotTile(TileIndex tile, const Train *t);
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bool HandleTrainEnterDepot(Train *v);
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bool HandleTrainEnterDepot(Train *v);
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bool CheckReverseTrain(const Train *v);
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#endif /* TRAIN_H */
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#endif /* TRAIN_H */
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@ -41,6 +41,7 @@
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#include "depot_base.h"
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#include "depot_base.h"
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#include "platform_func.h"
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#include "platform_func.h"
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#include "depot_map.h"
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#include "depot_map.h"
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#include "train_placement.h"
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#include "table/strings.h"
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#include "table/strings.h"
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#include "table/train_sprites.h"
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#include "table/train_sprites.h"
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@ -54,9 +55,6 @@ static TileIndex TrainApproachingCrossingTile(const Train *v);
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static void CheckIfTrainNeedsService(Train *v);
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static void CheckIfTrainNeedsService(Train *v);
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static void CheckNextTrainTile(Train *v);
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static void CheckNextTrainTile(Train *v);
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static const uint8_t _vehicle_initial_x_fract[4] = {10, 8, 4, 8};
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static const uint8_t _vehicle_initial_y_fract[4] = { 8, 4, 8, 10};
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template <>
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template <>
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bool IsValidImageIndex<VEH_TRAIN>(uint8_t image_index)
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bool IsValidImageIndex<VEH_TRAIN>(uint8_t image_index)
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{
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{
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@ -0,0 +1,312 @@
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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 train_placement.cpp Handling of trains in depot platforms. */
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#include "stdafx.h"
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#include "error.h"
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#include "news_func.h"
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#include "company_func.h"
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#include "strings_func.h"
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#include "platform_func.h"
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#include "depot_base.h"
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#include "depot_map.h"
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#include "train_placement.h"
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#include "train.h"
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#include "table/strings.h"
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#include "safeguards.h"
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/**
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* Check if a train can be placed in a given tile.
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* @param train The train.
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* @param check_tile The tile where we want to check whether it is possible to place the train.
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* @param executing False if testing and true if the call is being executed.
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* @return whether it found a platform to place the train.
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*/
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bool TrainPlacement::CheckPlacement(const Train *train, TileIndex check_tile, bool executing)
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{
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assert(train != nullptr);
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assert(IsRailDepotTile(check_tile));
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RailType rt = GetRailType(check_tile);
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PlacementInfo error_info = PI_FAILED_FREE_WAGGON;
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bool is_extended_depot = IsExtendedRailDepot(check_tile);
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bool succeeded = !train->IsFreeWagon();
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if (succeeded) {
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error_info = PI_FAILED_PLATFORM_TYPE;
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for (const Train *t = train; t != nullptr && succeeded; t = t->Next()) {
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RailType rail_type = Engine::Get(t->engine_type)->u.rail.railtype;
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if (!IsCompatibleRail(rail_type, rt)) succeeded = false;
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}
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}
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if (succeeded && is_extended_depot) {
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error_info = PI_FAILED_LENGTH;
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if (train->gcache.cached_total_length > GetPlatformLength(check_tile) * TILE_SIZE) succeeded = false;
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}
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if (succeeded) {
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error_info = PI_FAILED_POWER;
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bool has_power = false;
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for (const Train *t = train; t != nullptr && !has_power; t = t->Next()) {
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if (HasPowerOnRail(train->railtype, rt)) has_power = true;
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}
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if (!has_power) succeeded = false;
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}
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if (succeeded && is_extended_depot) {
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error_info = PI_FAILED_RESERVED;
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/* Check whether any tile of the platform is reserved. Don't assume all platform
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* is reserved as a whole: sections of the platform may be reserved by crashed trains. */
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for (TileIndex tile : GetPlatformTileArea(check_tile)) {
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if (HasDepotReservation(tile)) {
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succeeded = false;
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break;
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}
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}
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}
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if (succeeded && executing) {
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/* Do not check for signals if really not executing and action. */
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error_info = PI_FAILED_SIGNALS;
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SigSegState seg_state = UpdateSignalsOnSegment(check_tile, INVALID_DIAGDIR, train->owner);
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if (train->force_proceed == TFP_NONE && seg_state == SIGSEG_FULL) succeeded = false;
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}
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if (succeeded) error_info = PI_SUCCESS;
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if (error_info > this->info) {
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this->best_tile = check_tile;
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this->info = error_info;
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/* A direction for the train must be choosen: the one that allows the longest train in platform. */
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DiagDirection dir = GetRailDepotDirection(check_tile);
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if (is_extended_depot && GetPlatformLength(check_tile, dir) > GetPlatformLength(check_tile, ReverseDiagDir(dir))) {
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dir = ReverseDiagDir(dir);
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}
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this->best_dir = DiagDirToDir(dir);
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}
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return succeeded;
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}
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/**
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* Before placing a train in the rails of a depot, a valid platform must
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* be found. This function finds a tile for placing the train (and also gets the direction and track).
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* If there is no valid tile, it will be returned as best_tile == INVALID_TILE or info == PI_FAILED_PLATFORM_TYPE.
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* @param t The train we want to place in rails.
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* @param executing False if testing and true if the call is being executed.
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* @pre The train must be inside the rail depot as if it where in a standard depot.
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* (i.e. the track is TRACK_BIT_DEPOT, vehicles are hidden...).
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*/
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void TrainPlacement::LookForPlaceInDepot(const Train *train, bool executing)
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{
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assert(train != nullptr);
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assert(IsRailDepotTile(train->tile));
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/* Initialitzation. */
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bool is_extended_depot = IsExtendedRailDepot(train->tile);
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this->best_tile = (this->placed || !is_extended_depot) ? train->tile : GetPlatformExtremeTile(train->tile, DirToDiagDir(train->direction));
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assert(IsStandardRailDepot(this->best_tile) || IsAnyStartPlatformTile(this->best_tile));
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this->best_dir = train->direction;
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this->info = PI_BEGIN;
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/* First candidate is the original position of the train. */
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if (CheckPlacement(train, this->best_tile, executing)) return;
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/* Check all platforms. */
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Depot *depot = Depot::GetByTile(train->tile);
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for (auto &depot_tile : depot->depot_tiles) {
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if (CheckPlacement(train, depot_tile, executing)) return;
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}
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}
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/**
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* Check if a train can leave now or when other trains
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* move away. It returns whether there is a platform long
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* enough and with the appropriate rail type.
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* @param train The train.
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* @param executing False if testing and true if the call is being executed.
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* @return true iff there is a compatible platform long enough.
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*/
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bool TrainPlacement::CanFindAppropriatePlatform(const Train *train, bool executing)
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{
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this->LookForPlaceInDepot(train, executing);
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return this->info >= PI_WONT_LEAVE;
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}
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/**
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* Lift a train in a depot: keep the positions of the elements of the chain if needed,
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* and keep also the original tile, direction and track.
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* @param train The train we want to lift.
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* @pre The train must be inside a rail depot.
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* (i.e. the track is 'valid track | TRACK_BIT_DEPOT' or just 'TRACK_BIT_DEPOT').
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*/
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void TrainPlacement::LiftTrain(Train *train, DoCommandFlag flags)
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{
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assert(train == nullptr || train->IsInDepot());
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assert(train == nullptr || IsRailDepotTile(train->tile));
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assert(this->placed == false);
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/* Lift the train only if we have a train in an extended depot. */
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if (train == nullptr || !IsExtendedRailDepot(train->tile)) return;
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/* Do not lift in recursive commands of autoreplace. */
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if (flags & DC_AUTOREPLACE) return;
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/* If train is not placed... return, because train is already lifted. */
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if ((train->track & ~TRACK_BIT_DEPOT) == 0) return;
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/* Train is placed in rails: lift it. */
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this->placed = true;
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if (flags & DC_EXEC) FreeTrainTrackReservation(train);
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for (Train *t = train; t != nullptr; t = t->Next()) {
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// Lift.
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t->track = TRACK_BIT_DEPOT;
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t->tile = train->tile;
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t->x_pos = train->x_pos;
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t->y_pos = train->y_pos;
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t->UpdatePosition();
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t->UpdateViewport(true, true);
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}
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if ((flags & DC_EXEC) == 0) return;
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SetPlatformReservation(train->tile, false);
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UpdateSignalsOnSegment(train->tile, INVALID_DIAGDIR, train->owner);
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}
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/**
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* When a train is lifted inside a depot, before starting its way again,
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* must be placed in rails if in an extended rail depot; this function does all necessary things to do so.
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* In general, it's the opposite of #LiftTrain
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* @param train The train we want to place in rails.
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* @param flags Associated command flags
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* @pre The train must be inside the extended rail depot as if in a standard depot.
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* (i.e. the track is TRACK_BIT_DEPOT, vehicles are hidden...).
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*/
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void TrainPlacement::PlaceTrain(Train *train, DoCommandFlag flags)
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{
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if (train == nullptr) return;
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if (train != train->First()) return;
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if (!IsRailDepotTile(train->tile)) return;
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if (flags & DC_AUTOREPLACE) return;
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bool executing = (flags & DC_EXEC) != 0;
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/* Look for an appropriate platform. */
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this->LookForPlaceInDepot(train, executing);
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assert(!IsExtendedRailDepot(this->best_tile) || IsAnyStartPlatformTile(this->best_tile));
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if (this->info < PI_FAILED_END || !executing) {
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if (!executing) {
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/* Restore the train. */
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this->best_tile = train->tile;
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this->best_dir = train->direction;
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this->info = PI_SUCCESS;
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}
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if (!this->placed || (this->info < PI_FAILED_END && executing)) {
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for (Train *t = train; t != nullptr; t = t->Next()) {
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t->tile = this->best_tile;
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t->vehstatus |= VS_HIDDEN;
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t->track = TRACK_BIT_DEPOT;
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}
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if (!executing) return;
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train->PowerChanged();
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}
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if (this->info < PI_FAILED_END && executing) {
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/* Train cannot leave until changing the depot. Stop the train and send a message. */
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if (info < PI_WONT_LEAVE) {
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train->vehstatus |= VS_STOPPED;
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/* If vehicle is not stopped and user is the local company, send a message if needed. */
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if ((train->vehstatus & VS_STOPPED) == 0 && train->owner == _local_company && train->IsFrontEngine()) {
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SetDParam(0, train->index);
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AddVehicleAdviceNewsItem(STR_ADVICE_PLATFORM_TYPE + info - PI_ERROR_BEGIN, train->index);
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}
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}
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return;
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}
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}
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assert(this->best_tile != INVALID_TILE);
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assert(this->best_dir != INVALID_DIR);
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assert(IsRailDepotTile(this->best_tile));
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if (executing) {
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train->tile = this->best_tile;
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train->track = TrackToTrackBits(GetRailDepotTrack(this->best_tile));
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train->direction = this->best_dir;
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train->PowerChanged();
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}
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if (IsStandardRailDepot(this->best_tile)) {
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int x = TileX(this->best_tile) * TILE_SIZE + _vehicle_initial_x_fract[DirToDiagDir(this->best_dir)];
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int y = TileY(this->best_tile) * TILE_SIZE + _vehicle_initial_y_fract[DirToDiagDir(this->best_dir)];
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for (Train *t = train; t != nullptr; t = t->Next()) {
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t->tile = this->best_tile;
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t->direction = this->best_dir;
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t->vehstatus |= VS_HIDDEN;
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t->track = TRACK_BIT_DEPOT;
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t->x_pos = x;
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t->y_pos = y;
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t->z_pos = GetSlopePixelZ(x, y);
|
||||||
|
t->UpdatePosition();
|
||||||
|
t->UpdateViewport(true, true);
|
||||||
|
}
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
DiagDirection placing_dir = ReverseDiagDir(DirToDiagDir(this->best_dir));
|
||||||
|
|
||||||
|
static const uint8_t _plat_initial_x_fract[4] = {15, 8, 0, 8};
|
||||||
|
static const uint8_t _plat_initial_y_fract[4] = { 8, 0, 8, 15};
|
||||||
|
|
||||||
|
int x = TileX(this->best_tile) * TILE_SIZE | _plat_initial_x_fract[placing_dir];
|
||||||
|
int y = TileY(this->best_tile) * TILE_SIZE | _plat_initial_y_fract[placing_dir];
|
||||||
|
|
||||||
|
/* Add the offset for the first vehicle. */
|
||||||
|
x += TileIndexDiffCByDiagDir(placing_dir).x * (train->gcache.cached_veh_length + 1) / 2;
|
||||||
|
y += TileIndexDiffCByDiagDir(placing_dir).y * (train->gcache.cached_veh_length + 1) / 2;
|
||||||
|
|
||||||
|
/* Proceed placing the train in the given tile.
|
||||||
|
* At this point, the first vehicle contains the direction, tile and track.
|
||||||
|
* We must update positions of all the chain. */
|
||||||
|
for (Train *t = train; t != nullptr; t = t->Next()) {
|
||||||
|
t->vehstatus &= ~VS_HIDDEN;
|
||||||
|
t->direction = this->best_dir;
|
||||||
|
t->track = DiagDirToDiagTrackBits(placing_dir) | TRACK_BIT_DEPOT;
|
||||||
|
t->x_pos = x;
|
||||||
|
t->y_pos = y;
|
||||||
|
t->z_pos = GetSlopePixelZ(t->x_pos, t->y_pos);
|
||||||
|
t->tile = TileVirtXY(t->x_pos,t->y_pos);
|
||||||
|
|
||||||
|
assert(t->z_pos == train->z_pos);
|
||||||
|
assert(IsExtendedRailDepotTile(t->tile));
|
||||||
|
|
||||||
|
t->UpdatePosition();
|
||||||
|
t->UpdateViewport(true, true);
|
||||||
|
|
||||||
|
int advance = t->CalcNextVehicleOffset();
|
||||||
|
x += TileIndexDiffCByDiagDir(placing_dir).x * advance;
|
||||||
|
y += TileIndexDiffCByDiagDir(placing_dir).y * advance;
|
||||||
|
}
|
||||||
|
|
||||||
|
SetPlatformReservation(train->tile, true);
|
||||||
|
|
||||||
|
UpdateSignalsOnSegment(train->tile, INVALID_DIAGDIR, train->owner);
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,58 @@
|
||||||
|
/*
|
||||||
|
* 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/>.
|
||||||
|
*/
|
||||||
|
|
||||||
|
/** @file train_placement.h Handling of trains in depot platforms. */
|
||||||
|
|
||||||
|
#ifndef TRAIN_PLA_H
|
||||||
|
#define TRAIN_PLA_H
|
||||||
|
|
||||||
|
#include "core/enum_type.hpp"
|
||||||
|
#include "train.h"
|
||||||
|
|
||||||
|
|
||||||
|
/* Flags of failure and success when placing a train. */
|
||||||
|
enum PlacementInfo {
|
||||||
|
PI_BEGIN = 0,
|
||||||
|
PI_FAILED_FREE_WAGGON = PI_BEGIN, // Free waggon: not to be placed.
|
||||||
|
PI_ERROR_BEGIN,
|
||||||
|
PI_FAILED_PLATFORM_TYPE = PI_ERROR_BEGIN, // No compatible platforms with train type.
|
||||||
|
PI_FAILED_LENGTH, // There are compatible platforms but not long enough.
|
||||||
|
PI_FAILED_POWER, // No engine gets power in the platform.
|
||||||
|
PI_WONT_LEAVE,
|
||||||
|
PI_FAILED_RESERVED = PI_WONT_LEAVE, // There are compatible platforms but reserved right now.
|
||||||
|
PI_FAILED_SIGNALS, // There are compatible platforms not reserved, but signals don't allow placing it now.
|
||||||
|
PI_FAILED_END,
|
||||||
|
PI_SUCCESS = PI_FAILED_END, // There is an appropriate platform.
|
||||||
|
PI_END,
|
||||||
|
};
|
||||||
|
|
||||||
|
/* Store position of a train and lift it when necessary. */
|
||||||
|
struct TrainPlacement {
|
||||||
|
bool placed; // True if train is placed in rails.
|
||||||
|
TileIndex best_tile; // Best tile for the train.
|
||||||
|
Direction best_dir; // Best direction for the train.
|
||||||
|
PlacementInfo info; // Info of possible problems in best platform.
|
||||||
|
|
||||||
|
TrainPlacement() : placed(false),
|
||||||
|
best_tile(INVALID_TILE),
|
||||||
|
best_dir(INVALID_DIR),
|
||||||
|
info(PI_FAILED_PLATFORM_TYPE) {}
|
||||||
|
|
||||||
|
bool CheckPlacement(const Train *train, TileIndex tile, bool executing);
|
||||||
|
void LookForPlaceInDepot(const Train *train, bool executing);
|
||||||
|
bool CanFindAppropriatePlatform(const Train *train, bool executing);
|
||||||
|
|
||||||
|
void LiftTrain(Train *train, DoCommandFlag flags);
|
||||||
|
void PlaceTrain(Train *train, DoCommandFlag flags);
|
||||||
|
};
|
||||||
|
|
||||||
|
static inline bool CheckIfTrainNeedsPlacement(const Train *train)
|
||||||
|
{
|
||||||
|
return IsExtendedRailDepot(train->tile) && (train->track & ~TRACK_BIT_DEPOT) == 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
#endif /* TRAIN_PLA_H */
|
||||||
Loading…
Reference in New Issue