GODOT IS OPEN SOURCE

core/input_map.cpp

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+/*************************************************************************/
+/*  input_map.cpp                                                        */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                    http://www.godotengine.org                         */
+/*************************************************************************/
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                 */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+#include "input_map.h"
+#include "globals.h"
+
+InputMap *InputMap::singleton=NULL;
+
+void InputMap::add_action(const StringName& p_action) {
+
+	ERR_FAIL_COND( input_map.has(p_action) );
+	input_map[p_action]=Action();
+	static int last_id=1;
+	input_map[p_action].id=last_id;
+	input_id_map[last_id]=p_action;
+	last_id++;
+
+
+}
+
+void InputMap::erase_action(const StringName& p_action) {
+
+	ERR_FAIL_COND( !input_map.has(p_action) );
+	input_id_map.erase(input_map[p_action].id);
+	input_map.erase(p_action);
+
+}
+
+StringName InputMap::get_action_from_id(int p_id) const {
+
+	ERR_FAIL_COND_V(!input_id_map.has(p_id),StringName());
+	return input_id_map[p_id];
+}
+
+List<InputEvent>::Element *InputMap::_find_event(List<InputEvent> &p_list,const InputEvent& p_event) const {
+
+	for (List<InputEvent>::Element *E=p_list.front();E;E=E->next()) {
+
+		const InputEvent& e=E->get();
+		if(e.type!=p_event.type)
+			continue;
+		if (e.type!=InputEvent::KEY && e.device!=p_event.device)
+			continue;
+
+		bool same=false;
+
+		switch(p_event.type) {
+
+			case InputEvent::KEY: {
+
+				same=(e.key.scancode==p_event.key.scancode && e.key.mod == p_event.key.mod);
+
+			} break;
+			case InputEvent::JOYSTICK_BUTTON: {
+
+				same=(e.joy_button.button_index==p_event.joy_button.button_index);
+
+			} break;
+			case InputEvent::MOUSE_BUTTON: {
+
+				same=(e.mouse_button.button_index==p_event.mouse_button.button_index);
+
+			} break;
+			case InputEvent::JOYSTICK_MOTION: {
+
+				same=(e.joy_motion.axis==p_event.joy_motion.axis);
+
+			} break;
+		}
+
+		if (same)
+			return E;
+	}
+
+
+	return NULL;
+}
+
+
+bool InputMap::has_action(const StringName& p_action) const {
+
+	return input_map.has(p_action);
+}
+
+void InputMap::action_add_event(const StringName& p_action,const InputEvent& p_event) {
+
+	ERR_FAIL_COND(p_event.type==InputEvent::ACTION);
+	ERR_FAIL_COND( !input_map.has(p_action) );
+	if (_find_event(input_map[p_action].inputs,p_event))
+		return; //already gots
+
+	input_map[p_action].inputs.push_back(p_event);
+
+}
+
+
+int InputMap::get_action_id(const StringName& p_action) const {
+
+	ERR_FAIL_COND_V(!input_map.has(p_action),-1);
+	return input_map[p_action].id;
+}
+
+bool InputMap::action_has_event(const StringName& p_action,const InputEvent& p_event) {
+
+	ERR_FAIL_COND_V( !input_map.has(p_action), false );
+	return (_find_event(input_map[p_action].inputs,p_event)!=NULL);
+
+}
+
+void InputMap::action_erase_event(const StringName& p_action,const InputEvent& p_event) {
+
+	ERR_FAIL_COND( !input_map.has(p_action) );
+
+	List<InputEvent>::Element *E=_find_event(input_map[p_action].inputs,p_event);
+	if (E)
+		return; //already gots
+
+	input_map[p_action].inputs.erase(E);
+
+}
+
+const List<InputEvent> *InputMap::get_action_list(const StringName& p_action) {
+
+	const Map<StringName, Action>::Element *E=input_map.find(p_action);
+	if (!E)
+		return NULL;
+
+	return &E->get().inputs;
+}
+
+bool InputMap::event_is_action(const InputEvent& p_event, const StringName& p_action) const {
+
+
+	Map<StringName,Action >::Element *E=input_map.find(p_action);
+	if(!E) {
+		ERR_EXPLAIN("Request for unexisting InputMap action: "+String(p_action));
+		ERR_FAIL_COND_V(!E,false);
+	}
+
+	if (p_event.type==InputEvent::ACTION) {
+
+		return p_event.action.action==E->get().id;
+	}
+
+	return _find_event(E->get().inputs,p_event)!=NULL;
+}
+
+void InputMap::load_from_globals() {
+
+	input_map.clear();;
+
+	List<PropertyInfo> pinfo;
+	Globals::get_singleton()->get_property_list(&pinfo);
+
+	for(List<PropertyInfo>::Element *E=pinfo.front();E;E=E->next()) {
+		const PropertyInfo &pi=E->get();
+
+		if (!pi.name.begins_with("input/"))
+			continue;
+
+		String name = pi.name.substr(pi.name.find("/")+1,pi.name.length());
+
+		add_action(name);
+
+		Array va = Globals::get_singleton()->get(pi.name);;
+
+		for(int i=0;i<va.size();i++) {
+
+			InputEvent ie=va[i];
+			if (ie.type==InputEvent::NONE)
+				continue;
+			action_add_event(name,ie);
+
+		}
+
+	}
+
+}
+
+InputMap::InputMap() {
+
+	ERR_FAIL_COND(singleton);
+	singleton=this;
+}