diff options
Diffstat (limited to 'src/script/api/script_bridge.cpp')
| -rw-r--r-- | src/script/api/script_bridge.cpp | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/src/script/api/script_bridge.cpp b/src/script/api/script_bridge.cpp new file mode 100644 index 000000000..a1757f315 --- /dev/null +++ b/src/script/api/script_bridge.cpp @@ -0,0 +1,179 @@ +/* $Id$ */ + +/* + * 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 script_bridge.cpp Implementation of AIBridge. */ + +#include "../../stdafx.h" +#include "script_bridge.hpp" +#include "script_rail.hpp" +#include "../../ai/ai_instance.hpp" +#include "../../bridge_map.h" +#include "../../strings_func.h" +#include "../../economy_func.h" +#include "../../date_func.h" + +/* static */ bool AIBridge::IsValidBridge(BridgeID bridge_id) +{ + return bridge_id < MAX_BRIDGES && ::GetBridgeSpec(bridge_id)->avail_year <= _cur_year; +} + +/* static */ bool AIBridge::IsBridgeTile(TileIndex tile) +{ + if (!::IsValidTile(tile)) return false; + return ::IsBridgeTile(tile); +} + +/* static */ BridgeID AIBridge::GetBridgeID(TileIndex tile) +{ + if (!IsBridgeTile(tile)) return (BridgeID)-1; + return (BridgeID)::GetBridgeType(tile); +} + +/** + * Helper function to connect a just built bridge to nearby roads. + * @param instance The AI we have to built the road for. + */ +static void _DoCommandReturnBuildBridge2(class AIInstance *instance) +{ + if (!AIBridge::_BuildBridgeRoad2()) { + AIInstance::DoCommandReturn(instance); + return; + } + + /* This can never happen, as in test-mode this callback is never executed, + * and in execute-mode, the other callback is called. */ + NOT_REACHED(); +} + +/** + * Helper function to connect a just built bridge to nearby roads. + * @param instance The AI we have to built the road for. + */ +static void _DoCommandReturnBuildBridge1(class AIInstance *instance) +{ + if (!AIBridge::_BuildBridgeRoad1()) { + AIInstance::DoCommandReturn(instance); + return; + } + + /* This can never happen, as in test-mode this callback is never executed, + * and in execute-mode, the other callback is called. */ + NOT_REACHED(); +} + +/* static */ bool AIBridge::BuildBridge(AIVehicle::VehicleType vehicle_type, BridgeID bridge_id, TileIndex start, TileIndex end) +{ + EnforcePrecondition(false, start != end); + EnforcePrecondition(false, ::IsValidTile(start) && ::IsValidTile(end)); + EnforcePrecondition(false, TileX(start) == TileX(end) || TileY(start) == TileY(end)); + EnforcePrecondition(false, vehicle_type == AIVehicle::VT_ROAD || vehicle_type == AIVehicle::VT_RAIL || vehicle_type == AIVehicle::VT_WATER); + EnforcePrecondition(false, vehicle_type != AIVehicle::VT_RAIL || AIRail::IsRailTypeAvailable(AIRail::GetCurrentRailType())); + + uint type = 0; + switch (vehicle_type) { + case AIVehicle::VT_ROAD: + type |= (TRANSPORT_ROAD << 15); + type |= (::RoadTypeToRoadTypes((::RoadType)AIObject::GetRoadType()) << 8); + break; + case AIVehicle::VT_RAIL: + type |= (TRANSPORT_RAIL << 15); + type |= (AIRail::GetCurrentRailType() << 8); + break; + case AIVehicle::VT_WATER: + type |= (TRANSPORT_WATER << 15); + break; + default: NOT_REACHED(); + } + + /* For rail and water we do nothing special */ + if (vehicle_type == AIVehicle::VT_RAIL || vehicle_type == AIVehicle::VT_WATER) { + return AIObject::DoCommand(end, start, type | bridge_id, CMD_BUILD_BRIDGE); + } + + AIObject::SetCallbackVariable(0, start); + AIObject::SetCallbackVariable(1, end); + return AIObject::DoCommand(end, start, type | bridge_id, CMD_BUILD_BRIDGE, NULL, &::_DoCommandReturnBuildBridge1); +} + +/* static */ bool AIBridge::_BuildBridgeRoad1() +{ + /* Build the piece of road on the 'start' side of the bridge */ + TileIndex end = AIObject::GetCallbackVariable(0); + TileIndex start = AIObject::GetCallbackVariable(1); + + DiagDirection dir_1 = ::DiagdirBetweenTiles(end, start); + DiagDirection dir_2 = ::ReverseDiagDir(dir_1); + + return AIObject::DoCommand(start + ::TileOffsByDiagDir(dir_1), ::DiagDirToRoadBits(dir_2) | (AIObject::GetRoadType() << 4), 0, CMD_BUILD_ROAD, NULL, &::_DoCommandReturnBuildBridge2); +} + +/* static */ bool AIBridge::_BuildBridgeRoad2() +{ + /* Build the piece of road on the 'end' side of the bridge */ + TileIndex end = AIObject::GetCallbackVariable(0); + TileIndex start = AIObject::GetCallbackVariable(1); + + DiagDirection dir_1 = ::DiagdirBetweenTiles(end, start); + DiagDirection dir_2 = ::ReverseDiagDir(dir_1); + + return AIObject::DoCommand(end + ::TileOffsByDiagDir(dir_2), ::DiagDirToRoadBits(dir_1) | (AIObject::GetRoadType() << 4), 0, CMD_BUILD_ROAD); +} + +/* static */ bool AIBridge::RemoveBridge(TileIndex tile) +{ + EnforcePrecondition(false, IsBridgeTile(tile)); + return AIObject::DoCommand(tile, 0, 0, CMD_LANDSCAPE_CLEAR); +} + +/* static */ char *AIBridge::GetName(BridgeID bridge_id) +{ + if (!IsValidBridge(bridge_id)) return NULL; + + static const int len = 64; + char *bridge_name = MallocT<char>(len); + + ::GetString(bridge_name, ::GetBridgeSpec(bridge_id)->transport_name[0], &bridge_name[len - 1]); + return bridge_name; +} + +/* static */ int32 AIBridge::GetMaxSpeed(BridgeID bridge_id) +{ + if (!IsValidBridge(bridge_id)) return -1; + + return ::GetBridgeSpec(bridge_id)->speed; // km-ish/h +} + +/* static */ Money AIBridge::GetPrice(BridgeID bridge_id, uint length) +{ + if (!IsValidBridge(bridge_id)) return -1; + + return ::CalcBridgeLenCostFactor(length) * _price[PR_BUILD_BRIDGE] * ::GetBridgeSpec(bridge_id)->price >> 8; +} + +/* static */ int32 AIBridge::GetMaxLength(BridgeID bridge_id) +{ + if (!IsValidBridge(bridge_id)) return -1; + + return min(::GetBridgeSpec(bridge_id)->max_length, _settings_game.construction.max_bridge_length) + 2; +} + +/* static */ int32 AIBridge::GetMinLength(BridgeID bridge_id) +{ + if (!IsValidBridge(bridge_id)) return -1; + + return ::GetBridgeSpec(bridge_id)->min_length + 2; +} + +/* static */ TileIndex AIBridge::GetOtherBridgeEnd(TileIndex tile) +{ + if (!::IsValidTile(tile)) return INVALID_TILE; + if (!IsBridgeTile(tile)) return INVALID_TILE; + + return ::GetOtherBridgeEnd(tile); +} |