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378
engines/ultima/ultima4/events/event_handler.cpp
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378
engines/ultima/ultima4/events/event_handler.cpp
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/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "ultima/ultima4/events/event_handler.h"
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#include "ultima/ultima4/controllers/wait_controller.h"
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#include "ultima/ultima4/core/settings.h"
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#include "ultima/ultima4/core/utils.h"
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#include "ultima/ultima4/filesys/savegame.h"
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#include "ultima/ultima4/game/context.h"
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#include "ultima/ultima4/views/textview.h"
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#include "ultima/ultima4/gfx/screen.h"
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#include "ultima/ultima4/map/location.h"
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#include "common/events.h"
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#include "common/system.h"
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namespace Ultima {
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namespace Ultima4 {
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bool EventHandler::_controllerDone = false;
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bool EventHandler::_ended = false;
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EventHandler *EventHandler::_instance = nullptr;
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EventHandler::EventHandler() : _timer(settings._eventTimerGranularity),
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_updateScreen(nullptr), _isRightButtonDown(false) {
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}
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EventHandler *EventHandler::getInstance() {
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if (_instance == nullptr)
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_instance = new EventHandler();
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return _instance;
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}
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void EventHandler::wait_msecs(uint msecs) {
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int msecs_per_cycle = (1000 / settings._gameCyclesPerSecond);
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int cycles = msecs / msecs_per_cycle;
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if (cycles > 0) {
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WaitController waitCtrl(cycles);
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getInstance()->pushController(&waitCtrl);
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waitCtrl.wait();
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}
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// Sleep the rest of the msecs we can't wait for
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EventHandler::sleep(msecs % msecs_per_cycle);
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}
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void EventHandler::sleep(uint msec) {
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g_system->delayMillis(msec);
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}
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void EventHandler::wait_cycles(uint cycles) {
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WaitController waitCtrl(cycles);
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getInstance()->pushController(&waitCtrl);
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waitCtrl.wait();
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}
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void EventHandler::setControllerDone(bool done) {
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_controllerDone = done;
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#if defined(IOS_ULTIMA4)
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if (done)
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controllerStopped_helper();
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#endif
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}
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bool EventHandler::getControllerDone() {
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return _controllerDone;
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}
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void EventHandler::end() {
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// End all event processing
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_ended = true;
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}
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TimedEventMgr *EventHandler::getTimer() {
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return &_timer;
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}
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Controller *EventHandler::pushController(Controller *c) {
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c->setActive();
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_controllers.push_back(c);
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getTimer()->add(&Controller::timerCallback, c->getTimerInterval(), c);
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return c;
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}
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Controller *EventHandler::popController() {
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if (_controllers.empty())
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return nullptr;
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Controller *controller = _controllers.back();
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getTimer()->remove(&Controller::timerCallback, controller);
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_controllers.pop_back();
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controller = getController();
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if (controller)
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controller->setActive();
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return controller;
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}
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Controller *EventHandler::getController() const {
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if (_controllers.empty())
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return nullptr;
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return _controllers.back();
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}
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void EventHandler::setController(Controller *c) {
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while (popController() != nullptr) {}
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pushController(c);
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}
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void EventHandler::pushMouseAreaSet(const MouseArea *mouseAreas) {
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_mouseAreaSets.push_front(mouseAreas);
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}
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void EventHandler::popMouseAreaSet() {
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if (_mouseAreaSets.size())
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_mouseAreaSets.pop_front();
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}
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const MouseArea *EventHandler::getMouseAreaSet() const {
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if (_mouseAreaSets.size())
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return _mouseAreaSets.front();
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else
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return nullptr;
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}
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void EventHandler::run() {
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if (_updateScreen)
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(*_updateScreen)();
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g_screen->update();
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while (!_ended && !_controllerDone && !g_ultima->shouldQuit()) {
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Common::Event event;
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if (g_system->getEventManager()->pollEvent(event)) {
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switch (event.type) {
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case Common::EVENT_KEYDOWN:
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handleKeyDownEvent(event, getController(), _updateScreen);
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break;
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case Common::EVENT_LBUTTONDOWN:
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case Common::EVENT_RBUTTONDOWN:
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case Common::EVENT_MBUTTONDOWN:
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handleMouseButtonDownEvent(event, getController(), _updateScreen);
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break;
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case Common::EVENT_LBUTTONUP:
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case Common::EVENT_RBUTTONUP:
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case Common::EVENT_MBUTTONUP:
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handleMouseButtonUpEvent(event, getController(), _updateScreen);
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break;
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case Common::EVENT_MOUSEMOVE:
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handleMouseMotionEvent(event);
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continue;
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case Common::EVENT_CUSTOM_ENGINE_ACTION_START:
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getController()->keybinder((KeybindingAction)event.customType);
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break;
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case Common::EVENT_QUIT:
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_ended = true;
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return;
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default:
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break;
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}
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}
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// Brief delay
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g_system->delayMillis(10);
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// Poll the timer manager
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_timer.poll();
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// Update the screen
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g_screen->screenFrame();
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}
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}
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void EventHandler::setScreenUpdate(void (*updateScreen)(void)) {
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_updateScreen = updateScreen;
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}
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void EventHandler::pushKeyHandler(KeyHandler kh) {
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KeyHandler *new_kh = new KeyHandler(kh);
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KeyHandlerController *khc = new KeyHandlerController(new_kh);
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pushController(khc);
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}
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void EventHandler::popKeyHandler() {
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if (_controllers.empty())
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return;
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popController();
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}
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KeyHandler *EventHandler::getKeyHandler() const {
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if (_controllers.empty())
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return nullptr;
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KeyHandlerController *khc = dynamic_cast<KeyHandlerController *>(_controllers.back());
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assertMsg(khc != nullptr, "EventHandler::getKeyHandler called when controller wasn't a keyhandler");
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if (khc == nullptr)
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return nullptr;
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return khc->getKeyHandler();
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}
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void EventHandler::setKeyHandler(KeyHandler kh) {
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while (popController() != nullptr) {
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}
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pushKeyHandler(kh);
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}
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const MouseArea *EventHandler::mouseAreaForPoint(int x, int y) {
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int i;
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const MouseArea *areas = getMouseAreaSet();
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if (!areas)
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return nullptr;
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for (i = 0; areas[i]._nPoints != 0; i++) {
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if (g_screen->screenPointInMouseArea(x, y, &(areas[i]))) {
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return &(areas[i]);
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}
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}
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return nullptr;
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}
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void EventHandler::handleMouseMotionEvent(const Common::Event &event) {
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if (!settings._mouseOptions._enabled)
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return;
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const MouseArea *area;
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area = eventHandler->mouseAreaForPoint(event.mouse.x, event.mouse.y);
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if (area) {
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g_screen->setMouseCursor(area->_cursor);
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if (_isRightButtonDown) {
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int xd = (event.mouse.x / settings._scale) - 96,
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yd = (event.mouse.y / settings._scale) - 96;
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double dist = sqrt((double)(xd * xd + yd * yd));
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_walk.setDelta(area->_direction, (int)dist);
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}
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} else {
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g_screen->setMouseCursor(MC_DEFAULT);
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if (_isRightButtonDown)
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_walk.setDelta(DIR_NONE, 0);
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}
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}
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void EventHandler::handleMouseButtonDownEvent(const Common::Event &event, Controller *controller, updateScreenCallback updateScreen) {
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if (!settings._mouseOptions._enabled)
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return;
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if (event.type == Common::EVENT_LBUTTONDOWN) {
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// handle the keypress
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bool processed = controller->notifyMousePress(event.mouse);
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if (processed) {
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if (updateScreen)
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(*updateScreen)();
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g_screen->update();
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}
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} else if (event.type == Common::EVENT_RBUTTONDOWN) {
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_isRightButtonDown = true;
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handleMouseMotionEvent(event);
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}
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if (updateScreen)
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(*updateScreen)();
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g_screen->update();
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}
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void EventHandler::handleMouseButtonUpEvent(const Common::Event &event, Controller *controller, updateScreenCallback updateScreen) {
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if (!settings._mouseOptions._enabled)
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return;
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if (event.type == Common::EVENT_RBUTTONUP)
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_isRightButtonDown = false;
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}
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void EventHandler::handleKeyDownEvent(const Common::Event &event, Controller *controller, updateScreenCallback updateScreen) {
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int key;
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bool processed;
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key = (event.kbd.ascii != 0 && event.kbd.ascii < 128) ?
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event.kbd.ascii : (int)event.kbd.keycode;
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key += (event.kbd.flags & (Common::KBD_CTRL |
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Common::KBD_ALT | Common::KBD_META)) << 16;
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debug(1, "key event: sym = %d, mod = %d; translated = %d",
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event.kbd.keycode, event.kbd.flags, key);
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// handle the keypress
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processed = controller->notifyKeyPressed(key);
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if (processed) {
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if (updateScreen)
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(*updateScreen)();
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g_screen->update();
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}
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}
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/*-------------------------------------------------------------------*/
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void WalkTrigger::reset() {
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_action = KEYBIND_NONE;
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_ticksCtr = 0;
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}
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void WalkTrigger::setDelta(Direction dir, int distance) {
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if (distance > 96) {
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distance = 0;
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dir = DIR_NONE;
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}
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KeybindingAction action;
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switch (dir) {
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case DIR_NORTH:
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action = KEYBIND_UP;
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break;
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case DIR_SOUTH:
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action = KEYBIND_DOWN;
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break;
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case DIR_WEST:
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action = KEYBIND_LEFT;
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break;
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case DIR_EAST:
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action = KEYBIND_RIGHT;
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break;
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default:
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action = KEYBIND_NONE;
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break;
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}
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if (action != _action) {
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// Walk quadrant changed
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_action = action;
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_ticksCtr = 0;
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}
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_ticksPerWalk = 4 - (distance / 25);
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}
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KeybindingAction WalkTrigger::getAction() {
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if (--_ticksCtr <= 0) {
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_ticksCtr = _ticksPerWalk;
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return _action;
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}
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return KEYBIND_NONE;
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}
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} // End of namespace Ultima4
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} // End of namespace Ultima
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