1 // input.hxx -- handle user input from various sources.
3 // Written by David Megginson, started May 2001.
5 // Copyright (C) 2001 David Megginson, david@megginson.com
7 // This program is free software; you can redistribute it and/or
8 // modify it under the terms of the GNU General Public License as
9 // published by the Free Software Foundation; either version 2 of the
10 // License, or (at your option) any later version.
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 // General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, write to the Free Software
19 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 # error This library requires C++
33 #include <simgear/compiler.h>
35 #include <simgear/structure/subsystem_mgr.hxx>
36 #include <simgear/structure/commands.hxx>
37 #include <simgear/props/condition.hxx>
38 #include <simgear/props/props.hxx>
40 #include <Main/fg_os.hxx>
41 #include <Main/fg_props.hxx>
42 #include <Main/globals.hxx>
54 ////////////////////////////////////////////////////////////////////////
55 // General binding support.
56 ////////////////////////////////////////////////////////////////////////
60 * An input binding of some sort.
62 * <p>This class represents a binding that can be assigned to a
63 * keyboard key, a joystick button or axis, or even a panel
66 class FGBinding : public SGConditional
71 * Default constructor.
77 * Convenience constructor.
79 * @param node The binding will be built from this node.
81 FGBinding (const SGPropertyNode * node);
87 virtual ~FGBinding () {}
91 * Get the command name.
93 * @return The string name of the command for this binding.
95 virtual const string &getCommandName () const { return _command_name; }
99 * Get the command itself.
101 * @return The command associated with this binding, or 0 if none
104 virtual SGCommandMgr::command_t getCommand () const { return _command; }
108 * Get the argument that will be passed to the command.
110 * @return A property node that will be passed to the command as its
111 * argument, or 0 if none was supplied.
113 virtual const SGPropertyNode * getArg () { return _arg; }
117 * Read a binding from a property node.
119 * @param node The property node containing the binding.
121 virtual void read (const SGPropertyNode * node);
127 virtual void fire () const;
131 * Fire a binding with a scaled movement (rather than absolute position).
133 virtual void fire (double offset, double max) const;
137 * Fire a binding with a setting (i.e. joystick axis).
139 * A double 'setting' property will be added to the arguments.
141 * @param setting The input setting, usually between -1.0 and 1.0.
143 virtual void fire (double setting) const;
148 FGBinding (const FGBinding &binding);
150 string _command_name;
151 mutable SGCommandMgr::command_t _command;
152 mutable SGPropertyNode_ptr _arg;
153 mutable SGPropertyNode_ptr _setting;
158 ////////////////////////////////////////////////////////////////////////
159 // General input mapping support.
160 ////////////////////////////////////////////////////////////////////////
164 * Generic input module.
166 * <p>This module is designed to handle input from multiple sources --
167 * keyboard, joystick, mouse, or even panel switches -- in a consistent
168 * way, and to allow users to rebind any of the actions at runtime.</p>
170 class FGInput : public SGSubsystem
174 * Default constructor.
184 // Implementation of SGSubsystem.
186 virtual void init ();
187 virtual void update (double dt);
188 virtual void suspend ();
189 virtual void resume ();
190 virtual bool is_suspended () const;
194 * Control whether this is the default module to receive events.
196 * The first input module created will set itself as the default
199 * @param status true if this should be the default module for
200 * events, false otherwise.
202 virtual void makeDefault (bool status = true);
206 * Handle a single keystroke.
208 * @param k The integer key code, see Main/fg_os.hxx
209 * @param modifiers Modifier keys pressed (bitfield).
210 * @param x The mouse x position at the time of keypress.
211 * @param y The mouse y position at the time of keypress.
213 virtual void doKey (int k, int modifiers, int x, int y);
217 * Handle a mouse click event.
219 * @param button The mouse button selected.
220 * @param updown Button status.
221 * @param x The X position of the mouse event, in screen coordinates.
222 * @param y The Y position of the mouse event, in screen coordinates.
224 virtual void doMouseClick (int button, int updown, int x, int y);
228 * Handle mouse motion.
230 * @param x The new mouse x position, in screen coordinates.
231 * @param y The new mouse y position, in screen coordinates.
233 virtual void doMouseMotion (int x, int y);
247 MAX_JOYSTICK_AXES = _JS_MAX_AXES,
248 MAX_JOYSTICK_BUTTONS = 32,
251 MAX_MOUSE_BUTTONS = 8
256 typedef vector<FGBinding *> binding_list_t;
259 * Settings for a key or button.
268 binding_list_t bindings[KEYMOD_MAX];
273 * Settings for a single joystick axis.
280 binding_list_t bindings[KEYMOD_MAX];
282 float high_threshold;
291 * Settings for a joystick.
295 virtual ~joystick ();
306 * Settings for a mouse mode.
310 virtual ~mouse_mode ();
315 binding_list_t x_bindings[KEYMOD_MAX];
316 binding_list_t y_bindings[KEYMOD_MAX];
321 * Settings for a mouse.
328 SGPropertyNode * mode_node;
329 SGPropertyNode * mouse_button_nodes[MAX_MOUSE_BUTTONS];
337 * Initialize key bindings.
339 void _init_keyboard ();
343 * Initialize joystick bindings.
345 void _init_joystick ();
349 * Initialize mouse bindings.
355 * Initialize a single button.
357 inline void _init_button (const SGPropertyNode * node,
363 * Update the keyboard.
365 void _update_keyboard ();
369 * Update the joystick.
371 void _update_joystick (double dt);
377 void _update_mouse ();
381 * Update a single button.
383 inline void _update_button (button &b, int modifiers, bool pressed,
388 * Read bindings and modifiers.
390 void _read_bindings (const SGPropertyNode * node,
391 binding_list_t * binding_list,
395 * Look up the bindings for a key code.
397 const vector<FGBinding *> &_find_key_bindings (unsigned int k,
400 button _key_bindings[MAX_KEYS];
401 joystick _joystick_bindings[MAX_JOYSTICKS];
402 mouse _mouse_bindings[MAX_MICE];