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245 lines
5.9 KiB
C++
245 lines
5.9 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 script_object.hpp Main object, on which all objects depend. */
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#ifndef SCRIPT_OBJECT_HPP
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#define SCRIPT_OBJECT_HPP
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#include "../../misc/countedptr.hpp"
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#include "../../road_type.h"
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#include "../../rail_type.h"
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#include "script_types.hpp"
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#include "../script_suspend.hpp"
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/**
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* The callback function for Mode-classes.
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*/
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typedef bool (ScriptModeProc)();
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/**
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* Uper-parent object of all API classes. You should never use this class in
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* your script, as it doesn't publish any public functions. It is used
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* internally to have a common place to handle general things, like internal
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* command processing, and command-validation checks.
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* @api none
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*/
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class ScriptObject : public SimpleCountedObject {
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friend class ScriptInstance;
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protected:
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/**
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* A class that handles the current active instance. By instantiating it at
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* the beginning of a function with the current active instance, it remains
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* active till the scope of the variable closes. It then automatically
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* reverts to the active instance it was before instantiating.
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*/
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class ActiveInstance {
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friend class ScriptObject;
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public:
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ActiveInstance(ScriptInstance *instance);
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~ActiveInstance();
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private:
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ScriptInstance *last_active; ///< The active instance before we go instantiated.
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static ScriptInstance *active; ///< The global current active instance.
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};
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public:
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/**
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* Store the latest result of a DoCommand per company.
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* @param res The result of the last command.
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*/
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static void SetLastCommandRes(bool res);
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/**
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* Get the currently active instance.
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* @return The instance.
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*/
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static class ScriptInstance *GetActiveInstance();
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protected:
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/**
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* Executes a raw DoCommand for the AI.
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*/
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static bool DoCommand(TileIndex tile, uint32 p1, uint32 p2, uint cmd, const char *text = NULL, Script_SuspendCallbackProc *callback = NULL);
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/**
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* Sets the DoCommand costs counter to a value.
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*/
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static void SetDoCommandCosts(Money value);
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/**
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* Increase the current value of the DoCommand costs counter.
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*/
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static void IncreaseDoCommandCosts(Money value);
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/**
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* Get the current DoCommand costs counter.
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*/
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static Money GetDoCommandCosts();
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/**
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* Set the DoCommand last error.
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*/
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static void SetLastError(ScriptErrorType last_error);
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/**
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* Get the DoCommand last error.
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*/
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static ScriptErrorType GetLastError();
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/**
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* Set the road type.
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*/
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static void SetRoadType(RoadType road_type);
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/**
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* Get the road type.
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*/
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static RoadType GetRoadType();
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/**
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* Set the rail type.
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*/
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static void SetRailType(RailType rail_type);
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/**
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* Get the rail type.
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*/
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static RailType GetRailType();
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/**
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* Set the current mode of your AI to this proc.
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*/
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static void SetDoCommandMode(ScriptModeProc *proc, ScriptObject *instance);
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/**
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* Get the current mode your AI is currently under.
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*/
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static ScriptModeProc *GetDoCommandMode();
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/**
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* Get the instance of the current mode your AI is currently under.
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*/
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static ScriptObject *GetDoCommandModeInstance();
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/**
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* Set the delay of the DoCommand.
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*/
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static void SetDoCommandDelay(uint ticks);
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/**
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* Get the delay of the DoCommand.
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*/
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static uint GetDoCommandDelay();
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/**
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* Get the latest result of a DoCommand.
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*/
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static bool GetLastCommandRes();
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/**
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* Get the latest stored new_vehicle_id.
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*/
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static VehicleID GetNewVehicleID();
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/**
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* Get the latest stored new_sign_id.
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*/
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static SignID GetNewSignID();
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/**
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* Get the latest stored new_tunnel_endtile.
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*/
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static TileIndex GetNewTunnelEndtile();
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/**
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* Get the latest stored new_group_id.
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*/
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static GroupID GetNewGroupID();
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/**
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* Store a allow_do_command per company.
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* @param allow The new allow.
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*/
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static void SetAllowDoCommand(bool allow);
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/**
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* Get the internal value of allow_do_command. This can differ
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* from CanSuspend() if the reason we are not allowed
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* to execute a DoCommand is in squirrel and not the API.
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* In that case use this function to restore the previous value.
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* @return True iff DoCommands are allowed in the current scope.
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*/
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static bool GetAllowDoCommand();
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/**
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* Set the cost of the last command.
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*/
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static void SetLastCost(Money last_cost);
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/**
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* Get the cost of the last command.
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*/
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static Money GetLastCost();
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/**
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* Set a variable that can be used by callback functions to pass information.
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*/
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static void SetCallbackVariable(int index, int value);
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/**
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* Get the variable that is used by callback functions to pass information.
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*/
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static int GetCallbackVariable(int index);
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/**
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* Can we suspend the AI at this moment?
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*/
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static bool CanSuspend();
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/**
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* Get the pointer to store event data in.
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*/
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static void *&GetEventPointer();
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/**
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* Get the pointer to store log message in.
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*/
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static void *&GetLogPointer();
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private:
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/**
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* Store a new_vehicle_id per company.
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* @param vehicle_id The new VehicleID.
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*/
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static void SetNewVehicleID(VehicleID vehicle_id);
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/**
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* Store a new_sign_id per company.
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* @param sign_id The new SignID.
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*/
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static void SetNewSignID(SignID sign_id);
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/**
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* Store a new_tunnel_endtile per company.
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* @param tile The new TileIndex.
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*/
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static void SetNewTunnelEndtile(TileIndex tile);
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/**
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* Store a new_group_id per company.
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* @param group_id The new GroupID.
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*/
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static void SetNewGroupID(GroupID group_id);
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};
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#endif /* SCRIPT_OBJECT_HPP */
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