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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program 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, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef QDENGINE_QDCORE_UTIL_RESOURCE_DISPATCHER_H
#define QDENGINE_QDCORE_UTIL_RESOURCE_DISPATCHER_H
#include "qdengine/qdcore/util/Handle.h"
#include "qdengine/qdcore/util/SynchroTimer.h"
namespace QDEngine {
/////////////////////////////////////////////////////////////////////////////////////////
// General Time Resourcing
/////////////////////////////////////////////////////////////////////////////////////////
class ResourceUser {
int ID;
static int IDs;
public:
ResourceUser(time_type period) {
dtime = period;
time = 0;
ID = ++IDs;
}
virtual ~ResourceUser() {}
virtual int quant() {
return 1;
}
protected:
time_type time;
time_type dtime;
virtual void init_time(time_type time_) {
time = time_ + time_step();
}
virtual time_type time_step() {
return dtime;
}
friend class ResourceDispatcher;
};
class VoidFunctionCallResourceUser : public ResourceUser {
public:
typedef void (*type)();
VoidFunctionCallResourceUser(type func_, time_type dtime_) :
ResourceUser(dtime_), func(func_) {}
virtual ~VoidFunctionCallResourceUser() {}
int quant() {
func();
return 1;
}
protected:
type func;
};
template<class T>
class MemberFunctionCallResourceUser : public ResourceUser {
public:
typedef void (T::*type)();
MemberFunctionCallResourceUser(T &object_, type func_, time_type dtime_) :
ResourceUser(dtime_), object(object_), func(func_) {}
virtual ~MemberFunctionCallResourceUser() {}
int quant() {
(object.*func)();
return 1;
}
protected:
T &object;
type func;
};
/////////////////////////////////////////////////////////////////////////////////////////
// Resource Dispatcher
/////////////////////////////////////////////////////////////////////////////////////////
class ResourceDispatcher {
public:
ResourceDispatcher() : _start_log(false), _max_time_interval(0) { }
void setTimer(int syncro_by_clock, time_type time_per_frame, time_type max_time_interval_) {
_syncro_timer.set(syncro_by_clock, time_per_frame, _max_time_interval = max_time_interval_);
}
void attach(ResourceUser *user) {
PtrHandle<ResourceUser> p(0);
users.push_back(p);
users.back() = user;
user->init_time(_syncro_timer());
}
void attach(void (*func)(), time_type dtime) {
attach(new VoidFunctionCallResourceUser(func, dtime));
}
template<class T>
void attach(T &obj, void (T::*func)(), time_type dtime) {
attach(new MemberFunctionCallResourceUser<T>(obj, func, dtime));
}
void detach(ResourceUser *user) {
PtrHandle<ResourceUser> p(user);
users.remove(p);
p.set(0);
}
void start() {
_start_log = true;
}
void reset();
void skip_time() {
_syncro_timer.skip();
}
void quant();
void set_speed(float speed) {
_syncro_timer.setSpeed(speed);
}
private:
typedef Std::list<PtrHandle<ResourceUser> > UserList;
UserList users;
SyncroTimer _syncro_timer;
time_type _max_time_interval;
bool _start_log;
void do_start();
};
} // namespace QDEngine
#endif // QDENGINE_QDCORE_UTIL_RESOURCE_DISPATCHER_H
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