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Location: cpp/openttd-patchpack/source/src/driver.h
r9949:5ac3bf61abad
2.0 KiB
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(svn r14104) -Feature: Add a window for waypoints, allowing to view all the trains having the selected waypoint in their orders.
Changing its name is also supported from the same new window.
Gui based on work done by Satyap, on FS#2025.
Changing its name is also supported from the same new window.
Gui based on work done by Satyap, on FS#2025.
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/** @file driver.h Base for all drivers (video, sound, music, etc). */
#ifndef DRIVER_H
#define DRIVER_H
#include "debug.h"
#include "core/enum_type.hpp"
#include "string_func.h"
#include <map>
bool GetDriverParamBool(const char * const *parm, const char *name);
int GetDriverParamInt(const char * const *parm, const char *name, int def);
class Driver {
public:
virtual const char *Start(const char * const *parm) = 0;
virtual void Stop() = 0;
virtual ~Driver() { }
enum Type {
DT_BEGIN = 0,
DT_SOUND = 0,
DT_MUSIC,
DT_VIDEO,
DT_END,
};
};
DECLARE_POSTFIX_INCREMENT(Driver::Type);
class DriverFactoryBase {
private:
Driver::Type type;
const char *name;
int priority;
struct StringCompare {
bool operator () (const char *a, const char *b) const
{
return strcmp(a, b) < 0;
}
};
typedef std::map<const char *, DriverFactoryBase *, StringCompare> Drivers;
static Drivers &GetDrivers()
{
static Drivers &s_drivers = *new Drivers();
return s_drivers;
}
static Driver **GetActiveDriver(Driver::Type type)
{
static Driver *s_driver[3] = { NULL, NULL, NULL };
return &s_driver[type];
}
static const char *GetDriverTypeName(Driver::Type type)
{
static const char *driver_type_name[] = { "sound", "music", "video" };
return driver_type_name[type];
}
protected:
void RegisterDriver(const char *name, Driver::Type type, int priority);
public:
DriverFactoryBase() :
name(NULL)
{}
virtual ~DriverFactoryBase();
/** Shuts down all active drivers
*/
static void ShutdownDrivers()
{
for (Driver::Type dt = Driver::DT_BEGIN; dt < Driver::DT_END; dt++) {
Driver *driver = *GetActiveDriver(dt);
if (driver != NULL) driver->Stop();
}
}
static const Driver *SelectDriver(const char *name, Driver::Type type);
static char *GetDriversInfo(char *p, const char *last);
/**
* Get a nice description of the driver-class.
*/
virtual const char *GetDescription() = 0;
/**
* Create an instance of this driver-class.
*/
virtual Driver *CreateInstance() = 0;
};
#endif /* DRIVER_H */
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