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source: code/trunk/src/libraries/core/input/InputManager.cc @ 5781

Last change on this file since 5781 was 5781, checked in by rgrieder, 15 years ago
Reverted trunk again. We might want to find a way to delete these revisions again (x3n's changes are still available as diff in the commit mails).
Property svn:eol-style set to `native`
File size: 26.5 KB

Line
1	/*
2	* ORXONOX - the hottest 3D action shooter ever to exist
3	* > www.orxonox.net <
4	*
5	*
6	* License notice:
7	*
8	* This program is free software; you can redistribute it and/or
9	* modify it under the terms of the GNU General Public License
10	* as published by the Free Software Foundation; either version 2
11	* of the License, or (at your option) any later version.
12	*
13	* This program is distributed in the hope that it will be useful,
14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16	* GNU General Public License for more details.
17	*
18	* You should have received a copy of the GNU General Public License
19	* along with this program; if not, write to the Free Software
20	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
21	*
22	* Author:
23	* Reto Grieder
24	* Co-authors:
25	* ...
26	*
27	*/
28
29	/**
30	@file
31	@brief
32	Implementation of the InputManager and a static variable from the InputHandler.
33	*/
34
35	#include "InputManager.h"
36
37	#include <cassert>
38	#include <climits>
39	#include <ois/OISException.h>
40	#include <ois/OISInputManager.h>
41	#include <boost/foreach.hpp>
42
43	#include "util/Convert.h"
44	#include "util/Exception.h"
45	#include "util/ScopeGuard.h"
46	#include "core/Clock.h"
47	#include "core/CoreIncludes.h"
48	#include "core/ConfigValueIncludes.h"
49	#include "core/ConsoleCommand.h"
50	#include "core/CommandLine.h"
51	#include "core/Functor.h"
52	#include "core/GraphicsManager.h"
53
54	#include "InputBuffer.h"
55	#include "KeyDetector.h"
56	#include "JoyStick.h"
57	#include "JoyStickQuantityListener.h"
58	#include "Mouse.h"
59	#include "Keyboard.h"
60
61	namespace orxonox
62	{
63	SetCommandLineSwitch(keyboard_no_grab).information("Whether not to exclusively grab the keyboard");
64
65	// Abuse of this source file for the InputHandler
66	InputHandler InputHandler::EMPTY;
67
68	InputManager* InputManager::singletonPtr_s = 0;
69
70	//! Defines the \|= operator for easier use.
71	inline InputManager::State operator\|=(InputManager::State& lval, InputManager::State rval)
72	{
73	return (lval = (InputManager::State)(lval \| rval));
74	}
75
76	//! Defines the &= operator for easier use.
77	inline InputManager::State operator&=(InputManager::State& lval, int rval)
78	{
79	return (lval = (InputManager::State)(lval & rval));
80	}
81
82	// ############################################################
83	// ##### Initialisation #####
84	// ########## ##########
85	// ############################################################
86	InputManager::InputManager()
87	: internalState_(Bad)
88	, oisInputManager_(0)
89	, devices_(2)
90	, bExclusiveMouse_(false)
91	, emptyState_(0)
92	, keyDetector_(0)
93	, calibratorCallbackHandler_(0)
94	{
95	RegisterRootObject(InputManager);
96
97	CCOUT(4) << "Constructing..." << std::endl;
98
99	this->setConfigValues();
100
101	this->loadDevices();
102
103	// Lowest priority empty InputState
104	emptyState_ = createInputState("empty", false, false, InputStatePriority::Empty);
105	emptyState_->setHandler(&InputHandler::EMPTY);
106	activeStates_[emptyState_->getPriority()] = emptyState_;
107
108	// KeyDetector to evaluate a pressed key's name
109	InputState* detector = createInputState("detector", false, false, InputStatePriority::Detector);
110	// Create a callback to avoid buttonHeld events after the key has been detected
111	FunctorMember<InputManager>* bufferFunctor = createFunctor(&InputManager::clearBuffers);
112	bufferFunctor->setObject(this);
113	detector->setLeaveFunctor(bufferFunctor);
114	keyDetector_ = new KeyDetector();
115	detector->setHandler(keyDetector_);
116
117	// Joy stick calibration helper callback
118	InputState* calibrator = createInputState("calibrator", false, false, InputStatePriority::Calibrator);
119	calibrator->setHandler(&InputHandler::EMPTY);
120	calibratorCallbackHandler_ = new InputBuffer();
121	calibratorCallbackHandler_->registerListener(this, &InputManager::stopCalibration, '\r', true);
122	calibrator->setKeyHandler(calibratorCallbackHandler_);
123
124	this->updateActiveStates();
125
126	{
127	// calibrate console command
128	FunctorMember<InputManager>* functor = createFunctor(&InputManager::calibrate);
129	functor->setObject(this);
130	this->getIdentifier()->addConsoleCommand(createConsoleCommand(functor, "calibrate"), true);
131	}
132	{
133	// reload console command
134	FunctorMember<InputManager>* functor = createFunctor(&InputManager::reload);
135	functor->setObject(this);
136	this->getIdentifier()->addConsoleCommand(createConsoleCommand(functor, "reload"), false);
137	}
138
139	CCOUT(4) << "Construction complete." << std::endl;
140	internalState_ = Nothing;
141	}
142
143	void InputManager::setConfigValues()
144	{
145	}
146
147	/**
148	@brief
149	Creates the OIS::InputMananger, the keyboard, the mouse and
150	the joys ticks. If either of the first two fail, this method throws an exception.
151	@param windowWidth
152	The width of the render window
153	@param windowHeight
154	The height of the render window
155	*/
156	void InputManager::loadDevices()
157	{
158	CCOUT(4) << "Loading input devices..." << std::endl;
159
160	// When loading the devices they should not already be loaded
161	assert(internalState_ & Bad);
162	assert(devices_[InputDeviceEnumerator::Mouse] == 0);
163	assert(devices_[InputDeviceEnumerator::Keyboard] == 0);
164	assert(devices_.size() == InputDeviceEnumerator::FirstJoyStick);
165
166	// Fill parameter list
167	OIS::ParamList paramList;
168	size_t windowHnd = GraphicsManager::getInstance().getRenderWindowHandle();
169	paramList.insert(std::make_pair("WINDOW", multi_cast<std::string>(windowHnd)));
170	#if defined(ORXONOX_PLATFORM_WINDOWS)
171	paramList.insert(std::make_pair("w32_keyboard", "DISCL_NONEXCLUSIVE"));
172	paramList.insert(std::make_pair("w32_keyboard", "DISCL_FOREGROUND"));
173	paramList.insert(std::make_pair("w32_mouse", "DISCL_FOREGROUND"));
174	if (bExclusiveMouse_ \|\| GraphicsManager::getInstance().isFullScreen())
175	{
176	// Disable Windows key plus special keys (like play, stop, next, etc.)
177	paramList.insert(std::make_pair("w32_keyboard", "DISCL_NOWINKEY"));
178	paramList.insert(std::make_pair("w32_mouse", "DISCL_EXCLUSIVE"));
179	}
180	else
181	paramList.insert(std::make_pair("w32_mouse", "DISCL_NONEXCLUSIVE"));
182	#elif defined(ORXONOX_PLATFORM_LINUX)
183	// Enabling this is probably a bad idea, but whenever orxonox crashes, the setting stays on
184	// Trouble might be that the Pressed event occurs a bit too often...
185	paramList.insert(std::make_pair("XAutoRepeatOn", "true"));
186
187	if (bExclusiveMouse_ \|\| GraphicsManager::getInstance().isFullScreen())
188	{
189	if (CommandLine::getValue("keyboard_no_grab").getBool())
190	paramList.insert(std::make_pair("x11_keyboard_grab", "false"));
191	else
192	paramList.insert(std::make_pair("x11_keyboard_grab", "true"));
193	paramList.insert(std::make_pair("x11_mouse_grab", "true"));
194	paramList.insert(std::make_pair("x11_mouse_hide", "true"));
195	}
196	else
197	{
198	paramList.insert(std::make_pair("x11_keyboard_grab", "false"));
199	paramList.insert(std::make_pair("x11_mouse_grab", "false"));
200	paramList.insert(std::make_pair("x11_mouse_hide", "false"));
201	}
202	#endif
203
204	try
205	{
206	oisInputManager_ = OIS::InputManager::createInputSystem(paramList);
207	// Exception-safety
208	Loki::ScopeGuard guard = Loki::MakeGuard(OIS::InputManager::destroyInputSystem, oisInputManager_);
209	CCOUT(ORX_DEBUG) << "Created OIS input manager." << std::endl;
210
211	if (oisInputManager_->getNumberOfDevices(OIS::OISKeyboard) > 0)
212	devices_[InputDeviceEnumerator::Keyboard] = new Keyboard(InputDeviceEnumerator::Keyboard, oisInputManager_);
213	else
214	ThrowException(InitialisationFailed, "InputManager: No keyboard found, cannot proceed!");
215
216	// Successful initialisation
217	guard.Dismiss();
218	}
219	catch (const std::exception& ex)
220	{
221	oisInputManager_ = NULL;
222	internalState_ \|= Bad;
223	ThrowException(InitialisationFailed, "Could not initialise the input system: " << ex.what());
224	}
225
226	this->loadMouse();
227	this->loadJoySticks();
228
229	// Reorder states in case some joy sticks were added/removed
230	this->updateActiveStates();
231
232	CCOUT(4) << "Input devices loaded." << std::endl;
233	}
234
235	//! Creates a new orxonox::Mouse
236	void InputManager::loadMouse()
237	{
238	if (oisInputManager_->getNumberOfDevices(OIS::OISMouse) > 0)
239	{
240	try
241	{
242	devices_[InputDeviceEnumerator::Mouse] = new Mouse(InputDeviceEnumerator::Mouse, oisInputManager_);
243	}
244	catch (const std::exception& ex)
245	{
246	CCOUT(2) << "Warning: Failed to create Mouse:" << ex.what() << std::endl
247	<< "Proceeding without mouse support." << std::endl;
248	}
249	}
250	else
251	CCOUT(ORX_WARNING) << "Warning: No mouse found! Proceeding without mouse support." << std::endl;
252	}
253
254	//! Creates as many joy sticks as are available.
255	void InputManager::loadJoySticks()
256	{
257	for (int i = 0; i < oisInputManager_->getNumberOfDevices(OIS::OISJoyStick); i++)
258	{
259	try
260	{
261	devices_.push_back(new JoyStick(InputDeviceEnumerator::FirstJoyStick + i, oisInputManager_));
262	}
263	catch (const std::exception& ex)
264	{
265	CCOUT(2) << "Warning: Failed to create joy stick: " << ex.what() << std::endl;
266	}
267	}
268
269	// inform all JoyStick Device Number Listeners
270	std::vector<JoyStick*> joyStickList;
271	for (unsigned int i = InputDeviceEnumerator::FirstJoyStick; i < devices_.size(); ++i)
272	joyStickList.push_back(static_cast<JoyStick*>(devices_[i]));
273	JoyStickQuantityListener::changeJoyStickQuantity(joyStickList);
274	}
275
276	void InputManager::setKeyDetectorCallback(const std::string& command)
277	{
278	this->keyDetector_->setCallbackCommand(command);
279	}
280
281	// ############################################################
282	// ##### Destruction #####
283	// ########## ##########
284	// ############################################################
285
286	InputManager::~InputManager()
287	{
288	CCOUT(3) << "Destroying..." << std::endl;
289
290	// Destroy calibrator helper handler and state
291	delete keyDetector_;
292	this->destroyState("calibrator");
293	// Destroy KeyDetector and state
294	delete calibratorCallbackHandler_;
295	this->destroyState("detector");
296	// destroy the empty InputState
297	this->destroyStateInternal(this->emptyState_);
298
299	// destroy all user InputStates
300	while (statesByName_.size() > 0)
301	this->destroyStateInternal((*statesByName_.rbegin()).second);
302
303	if (!(internalState_ & Bad))
304	this->destroyDevices();
305
306	CCOUT(3) << "Destruction complete." << std::endl;
307	}
308
309	/**
310	@brief
311	Destoys all input devices (joy sticks, mouse, keyboard and OIS::InputManager)
312	@throw
313	Method does not throw
314	*/
315	void InputManager::destroyDevices()
316	{
317	CCOUT(4) << "Destroying devices..." << std::endl;
318
319	BOOST_FOREACH(InputDevice*& device, devices_)
320	{
321	if (device == NULL)
322	continue;
323	std::string className = device->getClassName();
324	try
325	{
326	delete device;
327	device = 0;
328	CCOUT(4) << className << " destroyed." << std::endl;
329	}
330	catch (...)
331	{
332	COUT(1) << className << " destruction failed: " << Exception::handleMessage() << std::endl
333	<< " Potential resource leak!" << std::endl;
334	}
335	}
336	devices_.resize(InputDeviceEnumerator::FirstJoyStick);
337
338	assert(oisInputManager_ != NULL);
339	try
340	{
341	OIS::InputManager::destroyInputSystem(oisInputManager_);
342	}
343	catch (...)
344	{
345	COUT(1) << "OIS::InputManager destruction failed" << Exception::handleMessage() << std::endl
346	<< " Potential resource leak!" << std::endl;
347	}
348	oisInputManager_ = NULL;
349
350	internalState_ \|= Bad;
351	CCOUT(4) << "Destroyed devices." << std::endl;
352	}
353
354	// ############################################################
355	// ##### Reloading #####
356	// ########## ##########
357	// ############################################################
358
359	void InputManager::reload()
360	{
361	if (internalState_ & Ticking)
362	{
363	// We cannot destroy OIS right now, because reload was probably
364	// caused by a user clicking on a GUI item. The stack trace would then
365	// include an OIS method. So it would be a very bad thing to destroy it..
366	internalState_ \|= ReloadRequest;
367	}
368	else if (internalState_ & Calibrating)
369	CCOUT(2) << "Warning: Cannot reload input system. Joy sticks are currently being calibrated." << std::endl;
370	else
371	reloadInternal();
372	}
373
374	//! Internal reload method. Destroys the OIS devices and loads them again.
375	void InputManager::reloadInternal()
376	{
377	CCOUT(3) << "Reloading ..." << std::endl;
378
379	this->destroyDevices();
380	this->loadDevices();
381
382	internalState_ &= ~Bad;
383	internalState_ &= ~ReloadRequest;
384	CCOUT(4) << "Reloading complete." << std::endl;
385	}
386
387	// ############################################################
388	// ##### Runtime Methods #####
389	// ########## ##########
390	// ############################################################
391
392	void InputManager::update(const Clock& time)
393	{
394	if (internalState_ & Bad)
395	ThrowException(General, "InputManager was not correctly reloaded.");
396
397	else if (internalState_ & ReloadRequest)
398	reloadInternal();
399
400	// check for states to leave
401	if (!stateLeaveRequests_.empty())
402	{
403	for (std::set<InputState*>::iterator it = stateLeaveRequests_.begin();
404	it != stateLeaveRequests_.end(); ++it)
405	{
406	(*it)->left();
407	// just to be sure that the state actually is registered
408	assert(statesByName_.find((*it)->getName()) != statesByName_.end());
409
410	activeStates_.erase((*it)->getPriority());
411	if ((*it)->getPriority() < InputStatePriority::HighPriority)
412	(*it)->setPriority(0);
413	updateActiveStates();
414	}
415	stateLeaveRequests_.clear();
416	}
417
418	// check for states to enter
419	if (!stateEnterRequests_.empty())
420	{
421	for (std::set<InputState*>::const_iterator it = stateEnterRequests_.begin();
422	it != stateEnterRequests_.end(); ++it)
423	{
424	// just to be sure that the state actually is registered
425	assert(statesByName_.find((*it)->getName()) != statesByName_.end());
426
427	if ((*it)->getPriority() == 0)
428	{
429	// Get smallest possible priority between 1 and maxStateStackSize_s
430	for(std::map<int, InputState*>::reverse_iterator rit = activeStates_.rbegin();
431	rit != activeStates_.rend(); ++rit)
432	{
433	if (rit->first < InputStatePriority::HighPriority)
434	{
435	(*it)->setPriority(rit->first + 1);
436	break;
437	}
438	}
439	// In case no normal handler was on the stack
440	if ((*it)->getPriority() == 0)
441	(*it)->setPriority(1);
442	}
443	activeStates_[(it)->getPriority()] = (it);
444	updateActiveStates();
445	(*it)->entered();
446	}
447	stateEnterRequests_.clear();
448	}
449
450	// check for states to destroy
451	if (!stateDestroyRequests_.empty())
452	{
453	for (std::set<InputState*>::iterator it = stateDestroyRequests_.begin();
454	it != stateDestroyRequests_.end(); ++it)
455	{
456	destroyStateInternal((*it));
457	}
458	stateDestroyRequests_.clear();
459	}
460
461	// check whether a state has changed its EMPTY situation
462	bool bUpdateRequired = false;
463	for (std::map<int, InputState*>::iterator it = activeStates_.begin(); it != activeStates_.end(); ++it)
464	{
465	if (it->second->hasExpired())
466	{
467	it->second->resetExpiration();
468	bUpdateRequired = true;
469	}
470	}
471	if (bUpdateRequired)
472	updateActiveStates();
473
474	// mark that we now start capturing and distributing input
475	internalState_ \|= Ticking;
476
477	// Capture all the input and handle it
478	BOOST_FOREACH(InputDevice* device, devices_)
479	if (device != NULL)
480	device->update(time);
481
482	// Update the states
483	for (unsigned int i = 0; i < activeStatesTicked_.size(); ++i)
484	activeStatesTicked_[i]->update(time.getDeltaTime());
485
486	internalState_ &= ~Ticking;
487	}
488
489	/**
490	@brief
491	Updates the currently active states (according to activeStates_) for each device.
492	Also, a list of all active states (no duplicates!) is compiled for the general update().
493	*/
494	void InputManager::updateActiveStates()
495	{
496	assert((internalState_ & InputManager::Ticking) == 0);
497	// temporary resize
498	for (unsigned int i = 0; i < devices_.size(); ++i)
499	{
500	if (devices_[i] == NULL)
501	continue;
502	std::vector<InputState*>& states = devices_[i]->getStateListRef();
503	bool occupied = false;
504	states.clear();
505	for (std::map<int, InputState*>::reverse_iterator rit = activeStates_.rbegin(); rit != activeStates_.rend(); ++rit)
506	{
507	if (rit->second->isInputDeviceEnabled(i) && (!occupied \|\| rit->second->bAlwaysGetsInput_))
508	{
509	states.push_back(rit->second);
510	if (!rit->second->bTransparent_)
511	occupied = true;
512	}
513	}
514	}
515
516	// update tickables (every state will only appear once)
517	// Using a std::set to avoid duplicates
518	std::set<InputState*> tempSet;
519	for (unsigned int i = 0; i < devices_.size(); ++i)
520	if (devices_[i] != NULL)
521	for (unsigned int iState = 0; iState < devices_[i]->getStateListRef().size(); ++iState)
522	tempSet.insert(devices_[i]->getStateListRef()[iState]);
523
524	// copy the content of the std::set back to the actual vector
525	activeStatesTicked_.clear();
526	for (std::set<InputState*>::const_iterator it = tempSet.begin();it != tempSet.end(); ++it)
527	activeStatesTicked_.push_back(*it);
528
529	// Check whether we have to change the mouse mode
530	std::vector<InputState*>& mouseStates = devices_[InputDeviceEnumerator::Mouse]->getStateListRef();
531	if (mouseStates.empty() && bExclusiveMouse_ \|\|
532	!mouseStates.empty() && mouseStates.front()->getIsExclusiveMouse() != bExclusiveMouse_)
533	{
534	bExclusiveMouse_ = !bExclusiveMouse_;
535	if (!GraphicsManager::getInstance().isFullScreen())
536	this->reloadInternal();
537	}
538	}
539
540	void InputManager::clearBuffers()
541	{
542	BOOST_FOREACH(InputDevice* device, devices_)
543	if (device != NULL)
544	device->clearBuffers();
545	}
546
547	void InputManager::calibrate()
548	{
549	COUT(0) << "Move all joy stick axes fully in all directions." << std::endl
550	<< "When done, put the axex in the middle position and press enter." << std::endl;
551
552	BOOST_FOREACH(InputDevice* device, devices_)
553	if (device != NULL)
554	device->startCalibration();
555
556	internalState_ \|= Calibrating;
557	enterState("calibrator");
558	}
559
560	//! Tells all devices to stop the calibration and evaluate it. Buffers are being cleared as well!
561	void InputManager::stopCalibration()
562	{
563	BOOST_FOREACH(InputDevice* device, devices_)
564	if (device != NULL)
565	device->stopCalibration();
566
567	// restore old input state
568	leaveState("calibrator");
569	internalState_ &= ~Calibrating;
570	// Clear buffers to prevent button hold events
571	this->clearBuffers();
572
573	COUT(0) << "Calibration has been stored." << std::endl;
574	}
575
576	//! Gets called by WindowEventListener upon focus change --> clear buffers
577	void InputManager::windowFocusChanged()
578	{
579	this->clearBuffers();
580	}
581
582	std::pair<int, int> InputManager::getMousePosition() const
583	{
584	Mouse* mouse = static_cast<Mouse*>(devices_[InputDeviceEnumerator::Mouse]);
585	if (mouse != NULL)
586	{
587	const OIS::MouseState state = mouse->getOISDevice()->getMouseState();
588	return std::make_pair(state.X.abs, state.Y.abs);
589	}
590	else
591	return std::make_pair(0, 0);
592	}
593
594	// ############################################################
595	// ##### Input States #####
596	// ########## ##########
597	// ############################################################
598
599	InputState* InputManager::createInputState(const std::string& name, bool bAlwaysGetsInput, bool bTransparent, InputStatePriority priority)
600	{
601	if (name == "")
602	return 0;
603	if (statesByName_.find(name) == statesByName_.end())
604	{
605	if (priority >= InputStatePriority::HighPriority \|\| priority == InputStatePriority::Empty)
606	{
607	// Make sure we don't add two high priority states with the same priority
608	for (std::map<std::string, InputState*>::const_iterator it = this->statesByName_.begin();
609	it != this->statesByName_.end(); ++it)
610	{
611	if (it->second->getPriority() == priority)
612	{
613	COUT(2) << "Warning: Could not add an InputState with the same priority '"
614	<< static_cast<int>(priority) << "' != 0." << std::endl;
615	return 0;
616	}
617	}
618	}
619	InputState* state = new InputState(name, bAlwaysGetsInput, bTransparent, priority);
620	statesByName_[name] = state;
621
622	return state;
623	}
624	else
625	{
626	COUT(2) << "Warning: Could not add an InputState with the same name '" << name << "'." << std::endl;
627	return 0;
628	}
629	}
630
631	InputState* InputManager::getState(const std::string& name)
632	{
633	std::map<std::string, InputState*>::iterator it = statesByName_.find(name);
634	if (it != statesByName_.end())
635	return it->second;
636	else
637	return 0;
638	}
639
640	bool InputManager::enterState(const std::string& name)
641	{
642	// get pointer from the map with all stored handlers
643	std::map<std::string, InputState*>::const_iterator it = statesByName_.find(name);
644	if (it != statesByName_.end())
645	{
646	// exists
647	if (activeStates_.find(it->second->getPriority()) == activeStates_.end())
648	{
649	// not active
650	if (stateDestroyRequests_.find(it->second) == stateDestroyRequests_.end())
651	{
652	// not scheduled for destruction
653	// prevents a state being added multiple times
654	stateEnterRequests_.insert(it->second);
655	return true;
656	}
657	}
658	}
659	return false;
660	}
661
662	bool InputManager::leaveState(const std::string& name)
663	{
664	if (name == "empty")
665	{
666	COUT(2) << "InputManager: Leaving the empty state is not allowed!" << std::endl;
667	return false;
668	}
669	// get pointer from the map with all stored handlers
670	std::map<std::string, InputState*>::const_iterator it = statesByName_.find(name);
671	if (it != statesByName_.end())
672	{
673	// exists
674	if (activeStates_.find(it->second->getPriority()) != activeStates_.end())
675	{
676	// active
677	stateLeaveRequests_.insert(it->second);
678	return true;
679	}
680	}
681	return false;
682	}
683
684	bool InputManager::destroyState(const std::string& name)
685	{
686	if (name == "empty")
687	{
688	COUT(2) << "InputManager: Removing the empty state is not allowed!" << std::endl;
689	return false;
690	}
691	std::map<std::string, InputState*>::iterator it = statesByName_.find(name);
692	if (it != statesByName_.end())
693	{
694	if (activeStates_.find(it->second->getPriority()) != activeStates_.end())
695	{
696	// The state is still active. We have to postpone
697	stateLeaveRequests_.insert(it->second);
698	stateDestroyRequests_.insert(it->second);
699	}
700	else if (this->internalState_ & Ticking)
701	{
702	// cannot remove state while ticking
703	stateDestroyRequests_.insert(it->second);
704	}
705	else
706	destroyStateInternal(it->second);
707
708	return true;
709	}
710	return false;
711	}
712
713	//! Destroys an InputState internally.
714	void InputManager::destroyStateInternal(InputState* state)
715	{
716	assert(state && !(this->internalState_ & Ticking));
717	std::map<int, InputState*>::iterator it = this->activeStates_.find(state->getPriority());
718	if (it != this->activeStates_.end())
719	{
720	this->activeStates_.erase(it);
721	updateActiveStates();
722	}
723	statesByName_.erase(state->getName());
724	delete state;
725	}
726	}

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