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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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "startrek/console.h"
#include "startrek/startrek.h"
namespace StarTrek {
void StarTrekEngine::pollEvents(bool queueEvents) {
Common::Event event;
TrekEvent trekEvent;
while (_eventMan->pollEvent(event)) {
trekEvent.mouse = event.mouse;
trekEvent.kbd = event.kbd;
switch (event.type) {
case Common::EVENT_QUIT:
_system->quit();
break;
case Common::EVENT_MOUSEMOVE:
if (queueEvents) {
trekEvent.type = TREKEVENT_MOUSEMOVE;
addEventToQueue(trekEvent);
}
// WORKAROUND: this improves the responsiveness of the mouse.
_system->updateScreen();
_system->delayMillis(10);
break;
case Common::EVENT_LBUTTONDOWN:
if (queueEvents) {
trekEvent.type = TREKEVENT_LBUTTONDOWN;
addEventToQueue(trekEvent);
}
break;
case Common::EVENT_RBUTTONDOWN:
if (queueEvents) {
trekEvent.type = TREKEVENT_RBUTTONDOWN;
addEventToQueue(trekEvent);
}
break;
case Common::EVENT_KEYDOWN:
if (event.kbd.keycode == Common::KEYCODE_d && (event.kbd.flags & Common::KBD_CTRL))
_console->attach();
if (queueEvents) {
trekEvent.type = TREKEVENT_KEYDOWN;
addEventToQueue(trekEvent);
}
break;
default:
break;
}
}
}
void StarTrekEngine::waitForNextTick(bool queueEvents) {
pollEvents(queueEvents);
uint nextFrame = _frameStartMillis + 1000 / 18.206;
uint millis = _system->getMillis();
if (millis < nextFrame)
_system->delayMillis(nextFrame - millis);
_clockTicks++;
_frameStartMillis = nextFrame;
if (queueEvents) {
TrekEvent tickEvent;
tickEvent.type = TREKEVENT_TICK;
tickEvent.tick = _clockTicks;
addEventToQueue(tickEvent);
}
}
void StarTrekEngine::initializeEventsAndMouse() {
_mouseMoveEventInQueue = false;
_tickEventInQueue = false;
_frameStartMillis = _system->getMillis();
// TODO: mouse
}
bool StarTrekEngine::getNextEvent(TrekEvent *e, bool poll) {
while (poll && _eventQueue.empty()) {
pollEvents(true);
// Check for tick event
uint nextFrame = _frameStartMillis + 1000 / 18.206;
uint millis = _system->getMillis();
if (millis >= nextFrame) {
_clockTicks++;
_frameStartMillis = millis;
TrekEvent tickEvent;
tickEvent.type = TREKEVENT_TICK;
tickEvent.tick = _clockTicks;
addEventToQueue(tickEvent);
}
if (!_eventQueue.empty())
break;
// Still no events; wait a 60th of a second before checking for events again
int delay = 1000 / 60;
millis = _system->getMillis();
if (millis + delay > nextFrame)
delay = nextFrame - millis;
if (delay > 0)
_system->delayMillis(delay);
}
if (_eventQueue.empty())
return false;
*e = _eventQueue.front();
return true;
}
void StarTrekEngine::removeNextEvent() {
if (_eventQueue.empty())
return;
const TrekEvent &e = _eventQueue.front();
if (e.type == TREKEVENT_MOUSEMOVE)
_mouseMoveEventInQueue = false;
if (e.type == TREKEVENT_TICK)
_tickEventInQueue = false;
_eventQueue.pop_front();
}
bool StarTrekEngine::popNextEvent(TrekEvent *e, bool poll) {
if (!getNextEvent(e, poll))
return false;
removeNextEvent();
return true;
}
void StarTrekEngine::addEventToQueue(const TrekEvent &e) {
if (e.type == TREKEVENT_MOUSEMOVE && _mouseMoveEventInQueue) {
// Only allow one mouse move event at once
for (Common::List<TrekEvent>::iterator i = _eventQueue.begin(); i != _eventQueue.end(); ++i) {
if (i->type == TREKEVENT_MOUSEMOVE) {
*i = e;
return;
}
}
error("Couldn't find mouse move event in eventQueue");
}
if (e.type == TREKEVENT_TICK) {
// Only allow one tick event at once
if (_tickEventInQueue)
return;
_tickEventInQueue = true;
}
if (e.type == TREKEVENT_MOUSEMOVE)
_mouseMoveEventInQueue = true;
assert(_eventQueue.size() < 0x40);
_eventQueue.push_back(e);
}
} // End of namespace StarTrek
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