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534f2419ad
These are functions that either use ScriptObject::Command or ScriptObject::GetCompany. This is a bit over-protective, but having the check everywhere makes it easier to validate that no check is missing automatically instead of by review. At this moment these checks will not do anything useful, as either IsValid or IsDeity from ScriptCompanyMode returns true, but that will change later.
136 lines
4.9 KiB
C++
136 lines
4.9 KiB
C++
/*
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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 script_tunnel.cpp Implementation of ScriptTunnel. */
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#include "../../stdafx.h"
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#include "script_tunnel.hpp"
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#include "script_rail.hpp"
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#include "../script_instance.hpp"
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#include "../../tunnel_map.h"
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#include "../../landscape_cmd.h"
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#include "../../road_cmd.h"
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#include "../../tunnelbridge_cmd.h"
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#include "../../safeguards.h"
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/* static */ bool ScriptTunnel::IsTunnelTile(TileIndex tile)
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{
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if (!::IsValidTile(tile)) return false;
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return ::IsTunnelTile(tile);
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}
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/* static */ TileIndex ScriptTunnel::GetOtherTunnelEnd(TileIndex tile)
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{
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if (!::IsValidTile(tile)) return INVALID_TILE;
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/* If it's a tunnel already, take the easy way out! */
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if (IsTunnelTile(tile)) return ::GetOtherTunnelEnd(tile);
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int start_z;
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Slope start_tileh = ::GetTileSlope(tile, &start_z);
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DiagDirection direction = ::GetInclinedSlopeDirection(start_tileh);
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if (direction == INVALID_DIAGDIR) return INVALID_TILE;
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TileIndexDiff delta = ::TileOffsByDiagDir(direction);
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int end_z;
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do {
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tile += delta;
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if (!::IsValidTile(tile)) return INVALID_TILE;
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::GetTileSlope(tile, &end_z);
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} while (start_z != end_z);
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return tile;
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}
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/**
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* Helper function to connect a just built tunnel to nearby roads.
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* @param instance The script instance we have to built the road for.
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*/
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static void _DoCommandReturnBuildTunnel2(class ScriptInstance *instance)
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{
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if (!ScriptTunnel::_BuildTunnelRoad2()) {
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ScriptInstance::DoCommandReturn(instance);
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return;
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}
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/* This can never happen, as in test-mode this callback is never executed,
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* and in execute-mode, the other callback is called. */
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NOT_REACHED();
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}
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/**
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* Helper function to connect a just built tunnel to nearby roads.
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* @param instance The script instance we have to built the road for.
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*/
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static void _DoCommandReturnBuildTunnel1(class ScriptInstance *instance)
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{
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if (!ScriptTunnel::_BuildTunnelRoad1()) {
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ScriptInstance::DoCommandReturn(instance);
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return;
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}
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/* This can never happen, as in test-mode this callback is never executed,
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* and in execute-mode, the other callback is called. */
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NOT_REACHED();
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}
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/* static */ bool ScriptTunnel::BuildTunnel(ScriptVehicle::VehicleType vehicle_type, TileIndex start)
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{
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EnforceDeityOrCompanyModeValid(false);
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EnforcePrecondition(false, ::IsValidTile(start));
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EnforcePrecondition(false, vehicle_type == ScriptVehicle::VT_RAIL || vehicle_type == ScriptVehicle::VT_ROAD);
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EnforcePrecondition(false, vehicle_type != ScriptVehicle::VT_RAIL || ScriptRail::IsRailTypeAvailable(ScriptRail::GetCurrentRailType()));
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EnforcePrecondition(false, vehicle_type != ScriptVehicle::VT_ROAD || ScriptRoad::IsRoadTypeAvailable(ScriptRoad::GetCurrentRoadType()));
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EnforcePrecondition(false, ScriptCompanyMode::IsValid() || vehicle_type == ScriptVehicle::VT_ROAD);
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if (vehicle_type == ScriptVehicle::VT_RAIL) {
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/* For rail we do nothing special */
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return ScriptObject::Command<CMD_BUILD_TUNNEL>::Do(start, TRANSPORT_RAIL, ScriptRail::GetCurrentRailType());
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} else {
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ScriptObject::SetCallbackVariable(0, start);
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return ScriptObject::Command<CMD_BUILD_TUNNEL>::Do(&::_DoCommandReturnBuildTunnel1, start, TRANSPORT_ROAD, ScriptRoad::GetCurrentRoadType());
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}
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}
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/* static */ bool ScriptTunnel::_BuildTunnelRoad1()
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{
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EnforceDeityOrCompanyModeValid(false);
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/* Build the piece of road on the 'start' side of the tunnel */
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TileIndex end = ScriptObject::GetCallbackVariable(0);
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TileIndex start = ScriptTunnel::GetOtherTunnelEnd(end);
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DiagDirection dir_1 = ::DiagdirBetweenTiles(end, start);
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DiagDirection dir_2 = ::ReverseDiagDir(dir_1);
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return ScriptObject::Command<CMD_BUILD_ROAD>::Do(&::_DoCommandReturnBuildTunnel2, start + ::TileOffsByDiagDir(dir_1), ::DiagDirToRoadBits(dir_2), ScriptRoad::GetRoadType(), DRD_NONE, 0);
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}
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/* static */ bool ScriptTunnel::_BuildTunnelRoad2()
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{
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EnforceDeityOrCompanyModeValid(false);
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/* Build the piece of road on the 'end' side of the tunnel */
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TileIndex end = ScriptObject::GetCallbackVariable(0);
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TileIndex start = ScriptTunnel::GetOtherTunnelEnd(end);
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DiagDirection dir_1 = ::DiagdirBetweenTiles(end, start);
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DiagDirection dir_2 = ::ReverseDiagDir(dir_1);
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return ScriptObject::Command<CMD_BUILD_ROAD>::Do(end + ::TileOffsByDiagDir(dir_2), ::DiagDirToRoadBits(dir_1), ScriptRoad::GetRoadType(), DRD_NONE, 0);
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}
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/* static */ bool ScriptTunnel::RemoveTunnel(TileIndex tile)
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{
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EnforceCompanyModeValid(false);
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EnforcePrecondition(false, IsTunnelTile(tile));
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return ScriptObject::Command<CMD_LANDSCAPE_CLEAR>::Do(tile);
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}
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