ai_bridge.cpp
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00002
00005 #include "ai_bridge.hpp"
00006 #include "ai_rail.hpp"
00007 #include "../ai_instance.hpp"
00008 #include "../../bridge_map.h"
00009 #include "../../strings_func.h"
00010 #include "../../core/alloc_func.hpp"
00011 #include "../../economy_func.h"
00012 #include "../../settings_type.h"
00013 #include "../../date_func.h"
00014
00015 bool AIBridge::IsValidBridge(BridgeID bridge_id)
00016 {
00017 return bridge_id < MAX_BRIDGES && ::GetBridgeSpec(bridge_id)->avail_year <= _cur_year;
00018 }
00019
00020 bool AIBridge::IsBridgeTile(TileIndex tile)
00021 {
00022 if (!::IsValidTile(tile)) return false;
00023 return ::IsBridgeTile(tile);
00024 }
00025
00026 BridgeID AIBridge::GetBridgeID(TileIndex tile)
00027 {
00028 if (!IsBridgeTile(tile)) return (BridgeID)-1;
00029 return (BridgeID)::GetBridgeType(tile);
00030 }
00031
00032 static void _DoCommandReturnBuildBridge2(class AIInstance *instance)
00033 {
00034 if (!AIBridge::_BuildBridgeRoad2()) {
00035 AIInstance::DoCommandReturn(instance);
00036 return;
00037 }
00038
00039
00040
00041 NOT_REACHED();
00042 }
00043
00044 static void _DoCommandReturnBuildBridge1(class AIInstance *instance)
00045 {
00046 if (!AIBridge::_BuildBridgeRoad1()) {
00047 AIInstance::DoCommandReturn(instance);
00048 return;
00049 }
00050
00051
00052
00053 NOT_REACHED();
00054 }
00055
00056 bool AIBridge::BuildBridge(AIVehicle::VehicleType vehicle_type, BridgeID bridge_id, TileIndex start, TileIndex end)
00057 {
00058 EnforcePrecondition(false, start != end);
00059 EnforcePrecondition(false, ::IsValidTile(start) && ::IsValidTile(end));
00060 EnforcePrecondition(false, TileX(start) == TileX(end) || TileY(start) == TileY(end));
00061 EnforcePrecondition(false, vehicle_type == AIVehicle::VT_ROAD || vehicle_type == AIVehicle::VT_RAIL || vehicle_type == AIVehicle::VT_WATER);
00062 EnforcePrecondition(false, vehicle_type != AIVehicle::VT_RAIL || AIRail::IsRailTypeAvailable(AIRail::GetCurrentRailType()));
00063
00064 uint type = 0;
00065 switch (vehicle_type) {
00066 case AIVehicle::VT_ROAD:
00067 type |= (TRANSPORT_ROAD << 15);
00068 type |= (::RoadTypeToRoadTypes((::RoadType)AIObject::GetRoadType()) << 8);
00069 break;
00070 case AIVehicle::VT_RAIL:
00071 type |= (TRANSPORT_RAIL << 15);
00072 type |= (AIRail::GetCurrentRailType() << 8);
00073 break;
00074 case AIVehicle::VT_WATER:
00075 type |= (TRANSPORT_WATER << 15);
00076 break;
00077 default: NOT_REACHED();
00078 }
00079
00080
00081 if (vehicle_type == AIVehicle::VT_RAIL || vehicle_type == AIVehicle::VT_WATER) {
00082 return AIObject::DoCommand(end, start, type | bridge_id, CMD_BUILD_BRIDGE);
00083 }
00084
00085 AIObject::SetCallbackVariable(0, start);
00086 AIObject::SetCallbackVariable(1, end);
00087 return AIObject::DoCommand(end, start, type | bridge_id, CMD_BUILD_BRIDGE, NULL, &_DoCommandReturnBuildBridge1);
00088 }
00089
00090 bool AIBridge::_BuildBridgeRoad1()
00091 {
00092
00093 TileIndex end = AIObject::GetCallbackVariable(0);
00094 TileIndex start = AIObject::GetCallbackVariable(1);
00095
00096 DiagDirection dir_1 = (DiagDirection)((::TileX(start) == ::TileX(end)) ? (::TileY(start) < ::TileY(end) ? DIAGDIR_NW : DIAGDIR_SE) : (::TileX(start) < ::TileX(end) ? DIAGDIR_NE : DIAGDIR_SW));
00097 DiagDirection dir_2 = ::ReverseDiagDir(dir_1);
00098
00099 return AIObject::DoCommand(start + ::TileOffsByDiagDir(dir_1), ::DiagDirToRoadBits(dir_2) | (AIObject::GetRoadType() << 4), 0, CMD_BUILD_ROAD, NULL, &_DoCommandReturnBuildBridge2);
00100 }
00101
00102 bool AIBridge::_BuildBridgeRoad2()
00103 {
00104
00105 TileIndex end = AIObject::GetCallbackVariable(0);
00106 TileIndex start = AIObject::GetCallbackVariable(1);
00107
00108 DiagDirection dir_1 = (DiagDirection)((::TileX(start) == ::TileX(end)) ? (::TileY(start) < ::TileY(end) ? DIAGDIR_NW : DIAGDIR_SE) : (::TileX(start) < ::TileX(end) ? DIAGDIR_NE : DIAGDIR_SW));
00109 DiagDirection dir_2 = ::ReverseDiagDir(dir_1);
00110
00111 return AIObject::DoCommand(end + ::TileOffsByDiagDir(dir_2), ::DiagDirToRoadBits(dir_1) | (AIObject::GetRoadType() << 4), 0, CMD_BUILD_ROAD);
00112 }
00113
00114 bool AIBridge::RemoveBridge(TileIndex tile)
00115 {
00116 EnforcePrecondition(false, IsBridgeTile(tile));
00117 return AIObject::DoCommand(tile, 0, 0, CMD_LANDSCAPE_CLEAR);
00118 }
00119
00120 char *AIBridge::GetName(BridgeID bridge_id)
00121 {
00122 if (!IsValidBridge(bridge_id)) return NULL;
00123
00124 static const int len = 64;
00125 char *bridge_name = MallocT<char>(len);
00126
00127 ::GetString(bridge_name, ::GetBridgeSpec(bridge_id)->transport_name[0], &bridge_name[len - 1]);
00128 return bridge_name;
00129 }
00130
00131 int32 AIBridge::GetMaxSpeed(BridgeID bridge_id)
00132 {
00133 if (!IsValidBridge(bridge_id)) return -1;
00134
00135 return ::GetBridgeSpec(bridge_id)->speed;
00136 }
00137
00138 Money AIBridge::GetPrice(BridgeID bridge_id, uint length)
00139 {
00140 if (!IsValidBridge(bridge_id)) return -1;
00141
00142 return ::CalcBridgeLenCostFactor(length) * _price.build_bridge * ::GetBridgeSpec(bridge_id)->price >> 8;
00143 }
00144
00145 int32 AIBridge::GetMaxLength(BridgeID bridge_id)
00146 {
00147 if (!IsValidBridge(bridge_id)) return -1;
00148
00149 uint max = ::GetBridgeSpec(bridge_id)->max_length;
00150 if (max >= 16 && _settings_game.construction.longbridges) max = 100;
00151 return max + 2;
00152 }
00153
00154 int32 AIBridge::GetMinLength(BridgeID bridge_id)
00155 {
00156 if (!IsValidBridge(bridge_id)) return -1;
00157
00158 return ::GetBridgeSpec(bridge_id)->min_length + 2;
00159 }
00160
00161 TileIndex AIBridge::GetOtherBridgeEnd(TileIndex tile)
00162 {
00163 if (!::IsValidTile(tile)) return INVALID_TILE;
00164 if (!IsBridgeTile(tile)) return INVALID_TILE;
00165
00166 return ::GetOtherBridgeEnd(tile);
00167 }