You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
222 lines
6.4 KiB
C++
222 lines
6.4 KiB
C++
/* $Id$ */
|
|
|
|
/*
|
|
* 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_instance.hpp The ScriptInstance tracks a script. */
|
|
|
|
#ifndef SCRIPT_INSTANCE_HPP
|
|
#define SCRIPT_INSTANCE_HPP
|
|
|
|
#include <squirrel.h>
|
|
#include "script_suspend.hpp"
|
|
|
|
#include "../command_type.h"
|
|
|
|
/** Runtime information about a script like a pointer to the squirrel vm and the current state. */
|
|
class ScriptInstance {
|
|
public:
|
|
friend class ScriptObject;
|
|
friend class ScriptController;
|
|
|
|
/**
|
|
* Create a new script.
|
|
*/
|
|
ScriptInstance(const char *APIName);
|
|
virtual ~ScriptInstance();
|
|
|
|
/**
|
|
* Initialize the script and prepare it for its first run.
|
|
* @param main_script The full path of the script to load.
|
|
* @param instance_name The name of the instance out of the script to load.
|
|
*/
|
|
void Initialize(const char *main_script, const char *instance_name);
|
|
|
|
/**
|
|
* Get the value of a setting of the current instance.
|
|
* @param name The name of the setting.
|
|
* @return the value for the setting, or -1 if the setting is not known.
|
|
*/
|
|
virtual int GetSetting(const char *name) = 0;
|
|
|
|
/**
|
|
* Find a library.
|
|
* @param library The library name to find.
|
|
* @param version The version the library should have.
|
|
* @return The library if found, NULL otherwise.
|
|
*/
|
|
virtual class ScriptInfo *FindLibrary(const char *library, int version) = 0;
|
|
|
|
/**
|
|
* A script in multiplayer waits for the server to handle his DoCommand.
|
|
* It keeps waiting for this until this function is called.
|
|
*/
|
|
void Continue();
|
|
|
|
/**
|
|
* Run the GameLoop of a script.
|
|
*/
|
|
void GameLoop();
|
|
|
|
/**
|
|
* Let the VM collect any garbage.
|
|
*/
|
|
void CollectGarbage() const;
|
|
|
|
/**
|
|
* Get the storage of this script.
|
|
*/
|
|
class ScriptStorage *GetStorage();
|
|
|
|
/**
|
|
* Get the log pointer of this script.
|
|
*/
|
|
void *GetLogPointer();
|
|
|
|
/**
|
|
* Return a true/false reply for a DoCommand.
|
|
*/
|
|
static void DoCommandReturn(ScriptInstance *instance);
|
|
|
|
/**
|
|
* Return a VehicleID reply for a DoCommand.
|
|
*/
|
|
static void DoCommandReturnVehicleID(ScriptInstance *instance);
|
|
|
|
/**
|
|
* Return a SignID reply for a DoCommand.
|
|
*/
|
|
static void DoCommandReturnSignID(ScriptInstance *instance);
|
|
|
|
/**
|
|
* Return a GroupID reply for a DoCommand.
|
|
*/
|
|
static void DoCommandReturnGroupID(ScriptInstance *instance);
|
|
|
|
/**
|
|
* Get the controller attached to the instance.
|
|
*/
|
|
class ScriptController *GetController() { return controller; }
|
|
|
|
/**
|
|
* Return the "this script died" value
|
|
*/
|
|
inline bool IsDead() const { return this->is_dead; }
|
|
|
|
/**
|
|
* Call the script Save function and save all data in the savegame.
|
|
*/
|
|
void Save();
|
|
|
|
/**
|
|
* Don't save any data in the savegame.
|
|
*/
|
|
static void SaveEmpty();
|
|
|
|
/**
|
|
* Load data from a savegame and store it on the stack.
|
|
* @param version The version of the script when saving, or -1 if this was
|
|
* not the original script saving the game.
|
|
*/
|
|
void Load(int version);
|
|
|
|
/**
|
|
* Load and discard data from a savegame.
|
|
*/
|
|
static void LoadEmpty();
|
|
|
|
/**
|
|
* Reduces the number of opcodes the script have left to zero. Unless
|
|
* the script is in a state where it cannot suspend it will be suspended
|
|
* for the reminder of the current tick. This function is safe to
|
|
* call from within a function called by the script.
|
|
*/
|
|
void Suspend();
|
|
|
|
/**
|
|
* Get the number of operations the script can execute before being suspended.
|
|
* This function is safe to call from within a function called by the script.
|
|
* @return The number of operations to execute.
|
|
*/
|
|
SQInteger GetOpsTillSuspend();
|
|
|
|
/**
|
|
* DoCommand callback function for all commands executed by scripts.
|
|
* @param result The result of the command.
|
|
* @param tile The tile on which the command was executed.
|
|
* @param p1 p1 as given to DoCommandPInternal.
|
|
* @param p2 p2 as given to DoCommandPInternal.
|
|
*/
|
|
void DoCommandCallback(const CommandCost &result, TileIndex tile, uint32 p1, uint32 p2);
|
|
|
|
/**
|
|
* Insert an event for this script.
|
|
* @param event The event to insert.
|
|
*/
|
|
void InsertEvent(class ScriptEvent *event);
|
|
|
|
protected:
|
|
class Squirrel *engine; ///< A wrapper around the squirrel vm.
|
|
|
|
/**
|
|
* Register all API functions to the VM.
|
|
*/
|
|
virtual void RegisterAPI();
|
|
|
|
/**
|
|
* Tell the script it died.
|
|
*/
|
|
virtual void Died();
|
|
|
|
/**
|
|
* Get the callback handling DoCommands in case of networking.
|
|
*/
|
|
virtual CommandCallback *GetDoCommandCallback() = 0;
|
|
|
|
/**
|
|
* Load the dummy script.
|
|
*/
|
|
virtual void LoadDummyScript() = 0;
|
|
|
|
private:
|
|
class ScriptController *controller; ///< The script main class.
|
|
class ScriptStorage *storage; ///< Some global information for each running script.
|
|
SQObject *instance; ///< Squirrel-pointer to the script main class.
|
|
|
|
bool is_started; ///< Is the scripts constructor executed?
|
|
bool is_dead; ///< True if the script has been stopped.
|
|
bool is_save_data_on_stack; ///< Is the save data still on the squirrel stack?
|
|
int suspend; ///< The amount of ticks to suspend this script before it's allowed to continue.
|
|
Script_SuspendCallbackProc *callback; ///< Callback that should be called in the next tick the script runs.
|
|
|
|
/**
|
|
* Call the script Load function if it exists and data was loaded
|
|
* from a savegame.
|
|
*/
|
|
bool CallLoad();
|
|
|
|
/**
|
|
* Save one object (int / string / array / table) to the savegame.
|
|
* @param vm The virtual machine to get all the data from.
|
|
* @param index The index on the squirrel stack of the element to save.
|
|
* @param max_depth The maximum depth recursive arrays / tables will be stored
|
|
* with before an error is returned.
|
|
* @param test If true, don't really store the data but only check if it is
|
|
* valid.
|
|
* @return True if the saving was successful.
|
|
*/
|
|
static bool SaveObject(HSQUIRRELVM vm, SQInteger index, int max_depth, bool test);
|
|
|
|
/**
|
|
* Load all objects from a savegame.
|
|
* @return True if the loading was successful.
|
|
*/
|
|
static bool LoadObjects(HSQUIRRELVM vm);
|
|
};
|
|
|
|
#endif /* SCRIPT_INSTANCE_HPP */
|