src/client/inputhandler.h

   1 /*
   2 Minetest
   3 Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #ifndef INPUT_HANDLER_H
  21 #define INPUT_HANDLER_H
  22
  23 #include "irrlichttypes_extrabloated.h"
  24 #include "joystick_controller.h"
  25 #include <list>
  26 #include "keycode.h"
  27
  28 #ifdef HAVE_TOUCHSCREENGUI
  29 #include "touchscreengui.h"
  30 #endif
  31
  32 class KeyList : private std::list<KeyPress>
  33 {
  34         typedef std::list<KeyPress> super;
  35         typedef super::iterator iterator;
  36         typedef super::const_iterator const_iterator;
  37
  38         virtual const_iterator find(const KeyPress &key) const
  39         {
  40                 const_iterator f(begin());
  41                 const_iterator e(end());
  42
  43                 while (f != e) {
  44                         if (*f == key)
  45                                 return f;
  46
  47                         ++f;
  48                 }
  49
  50                 return e;
  51         }
  52
  53         virtual iterator find(const KeyPress &key)
  54         {
  55                 iterator f(begin());
  56                 iterator e(end());
  57
  58                 while (f != e) {
  59                         if (*f == key)
  60                                 return f;
  61
  62                         ++f;
  63                 }
  64
  65                 return e;
  66         }
  67
  68 public:
  69         void clear() { super::clear(); }
  70
  71         void set(const KeyPress &key)
  72         {
  73                 if (find(key) == end())
  74                         push_back(key);
  75         }
  76
  77         void unset(const KeyPress &key)
  78         {
  79                 iterator p(find(key));
  80
  81                 if (p != end())
  82                         erase(p);
  83         }
  84
  85         void toggle(const KeyPress &key)
  86         {
  87                 iterator p(this->find(key));
  88
  89                 if (p != end())
  90                         erase(p);
  91                 else
  92                         push_back(key);
  93         }
  94
  95         bool operator[](const KeyPress &key) const { return find(key) != end(); }
  96 };
  97
  98 class MyEventReceiver : public IEventReceiver
  99 {
 100 public:
 101         // This is the one method that we have to implement
 102         virtual bool OnEvent(const SEvent &event);
 103
 104         bool IsKeyDown(const KeyPress &keyCode) const { return keyIsDown[keyCode]; }
 105
 106         // Checks whether a key was down and resets the state
 107         bool WasKeyDown(const KeyPress &keyCode)
 108         {
 109                 bool b = keyWasDown[keyCode];
 110                 if (b)
 111                         keyWasDown.unset(keyCode);
 112                 return b;
 113         }
 114
 115         void listenForKey(const KeyPress &keyCode) { keysListenedFor.set(keyCode); }
 116         void dontListenForKeys() { keysListenedFor.clear(); }
 117
 118         s32 getMouseWheel()
 119         {
 120                 s32 a = mouse_wheel;
 121                 mouse_wheel = 0;
 122                 return a;
 123         }
 124
 125         void clearInput()
 126         {
 127                 keyIsDown.clear();
 128                 keyWasDown.clear();
 129
 130                 leftclicked = false;
 131                 rightclicked = false;
 132                 leftreleased = false;
 133                 rightreleased = false;
 134
 135                 left_active = false;
 136                 middle_active = false;
 137                 right_active = false;
 138
 139                 mouse_wheel = 0;
 140         }
 141
 142         MyEventReceiver()
 143         {
 144                 clearInput();
 145 #ifdef HAVE_TOUCHSCREENGUI
 146                 m_touchscreengui = NULL;
 147 #endif
 148         }
 149
 150         bool leftclicked;
 151         bool rightclicked;
 152         bool leftreleased;
 153         bool rightreleased;
 154
 155         bool left_active;
 156         bool middle_active;
 157         bool right_active;
 158
 159         s32 mouse_wheel;
 160
 161         JoystickController *joystick;
 162
 163 #ifdef HAVE_TOUCHSCREENGUI
 164         TouchScreenGUI *m_touchscreengui;
 165 #endif
 166
 167 private:
 168         // The current state of keys
 169         KeyList keyIsDown;
 170         // Whether a key has been pressed or not
 171         KeyList keyWasDown;
 172         // List of keys we listen for
 173         // TODO perhaps the type of this is not really
 174         // performant as KeyList is designed for few but
 175         // often changing keys, and keysListenedFor is expected
 176         // to change seldomly but contain lots of keys.
 177         KeyList keysListenedFor;
 178 };
 179
 180 class InputHandler
 181 {
 182 public:
 183         InputHandler() {}
 184         virtual ~InputHandler() {}
 185
 186         virtual bool isKeyDown(const KeyPress &keyCode) = 0;
 187         virtual bool wasKeyDown(const KeyPress &keyCode) = 0;
 188
 189         virtual void listenForKey(const KeyPress &keyCode) {}
 190         virtual void dontListenForKeys() {}
 191
 192         virtual v2s32 getMousePos() = 0;
 193         virtual void setMousePos(s32 x, s32 y) = 0;
 194
 195         virtual bool getLeftState() = 0;
 196         virtual bool getRightState() = 0;
 197
 198         virtual bool getLeftClicked() = 0;
 199         virtual bool getRightClicked() = 0;
 200         virtual void resetLeftClicked() = 0;
 201         virtual void resetRightClicked() = 0;
 202
 203         virtual bool getLeftReleased() = 0;
 204         virtual bool getRightReleased() = 0;
 205         virtual void resetLeftReleased() = 0;
 206         virtual void resetRightReleased() = 0;
 207
 208         virtual s32 getMouseWheel() = 0;
 209
 210         virtual void step(float dtime) {}
 211
 212         virtual void clear() {}
 213
 214         JoystickController joystick;
 215 };
 216 /*
 217         Separated input handler
 218 */
 219
 220 class RealInputHandler : public InputHandler
 221 {
 222 public:
 223         RealInputHandler(IrrlichtDevice *device, MyEventReceiver *receiver)
 224             : m_device(device), m_receiver(receiver), m_mousepos(0, 0)
 225         {
 226                 m_receiver->joystick = &joystick;
 227         }
 228         virtual bool isKeyDown(const KeyPress &keyCode)
 229         {
 230                 return m_receiver->IsKeyDown(keyCode);
 231         }
 232         virtual bool wasKeyDown(const KeyPress &keyCode)
 233         {
 234                 return m_receiver->WasKeyDown(keyCode);
 235         }
 236         virtual void listenForKey(const KeyPress &keyCode)
 237         {
 238                 m_receiver->listenForKey(keyCode);
 239         }
 240         virtual void dontListenForKeys() { m_receiver->dontListenForKeys(); }
 241         virtual v2s32 getMousePos()
 242         {
 243                 if (m_device->getCursorControl()) {
 244                         return m_device->getCursorControl()->getPosition();
 245                 } else {
 246                         return m_mousepos;
 247                 }
 248         }
 249         virtual void setMousePos(s32 x, s32 y)
 250         {
 251                 if (m_device->getCursorControl()) {
 252                         m_device->getCursorControl()->setPosition(x, y);
 253                 } else {
 254                         m_mousepos = v2s32(x, y);
 255                 }
 256         }
 257
 258         virtual bool getLeftState() { return m_receiver->left_active; }
 259         virtual bool getRightState() { return m_receiver->right_active; }
 260
 261         virtual bool getLeftClicked() { return m_receiver->leftclicked; }
 262         virtual bool getRightClicked() { return m_receiver->rightclicked; }
 263         virtual void resetLeftClicked() { m_receiver->leftclicked = false; }
 264         virtual void resetRightClicked() { m_receiver->rightclicked = false; }
 265
 266         virtual bool getLeftReleased() { return m_receiver->leftreleased; }
 267         virtual bool getRightReleased() { return m_receiver->rightreleased; }
 268         virtual void resetLeftReleased() { m_receiver->leftreleased = false; }
 269         virtual void resetRightReleased() { m_receiver->rightreleased = false; }
 270
 271         virtual s32 getMouseWheel() { return m_receiver->getMouseWheel(); }
 272
 273         void clear()
 274         {
 275                 joystick.clear();
 276                 m_receiver->clearInput();
 277         }
 278
 279 private:
 280         IrrlichtDevice *m_device;
 281         MyEventReceiver *m_receiver;
 282         v2s32 m_mousepos;
 283 };
 284
 285 class RandomInputHandler : public InputHandler
 286 {
 287 public:
 288         RandomInputHandler()
 289         {
 290                 leftdown = false;
 291                 rightdown = false;
 292                 leftclicked = false;
 293                 rightclicked = false;
 294                 leftreleased = false;
 295                 rightreleased = false;
 296                 keydown.clear();
 297         }
 298         virtual bool isKeyDown(const KeyPress &keyCode) { return keydown[keyCode]; }
 299         virtual bool wasKeyDown(const KeyPress &keyCode) { return false; }
 300         virtual v2s32 getMousePos() { return mousepos; }
 301         virtual void setMousePos(s32 x, s32 y) { mousepos = v2s32(x, y); }
 302
 303         virtual bool getLeftState() { return leftdown; }
 304         virtual bool getRightState() { return rightdown; }
 305
 306         virtual bool getLeftClicked() { return leftclicked; }
 307         virtual bool getRightClicked() { return rightclicked; }
 308         virtual void resetLeftClicked() { leftclicked = false; }
 309         virtual void resetRightClicked() { rightclicked = false; }
 310
 311         virtual bool getLeftReleased() { return leftreleased; }
 312         virtual bool getRightReleased() { return rightreleased; }
 313         virtual void resetLeftReleased() { leftreleased = false; }
 314         virtual void resetRightReleased() { rightreleased = false; }
 315
 316         virtual s32 getMouseWheel() { return 0; }
 317
 318         virtual void step(float dtime)
 319         {
 320                 {
 321                         static float counter1 = 0;
 322                         counter1 -= dtime;
 323                         if (counter1 < 0.0) {
 324                                 counter1 = 0.1 * Rand(1, 40);
 325                                 keydown.toggle(getKeySetting("keymap_jump"));
 326                         }
 327                 }
 328                 {
 329                         static float counter1 = 0;
 330                         counter1 -= dtime;
 331                         if (counter1 < 0.0) {
 332                                 counter1 = 0.1 * Rand(1, 40);
 333                                 keydown.toggle(getKeySetting("keymap_special1"));
 334                         }
 335                 }
 336                 {
 337                         static float counter1 = 0;
 338                         counter1 -= dtime;
 339                         if (counter1 < 0.0) {
 340                                 counter1 = 0.1 * Rand(1, 40);
 341                                 keydown.toggle(getKeySetting("keymap_forward"));
 342                         }
 343                 }
 344                 {
 345                         static float counter1 = 0;
 346                         counter1 -= dtime;
 347                         if (counter1 < 0.0) {
 348                                 counter1 = 0.1 * Rand(1, 40);
 349                                 keydown.toggle(getKeySetting("keymap_left"));
 350                         }
 351                 }
 352                 {
 353                         static float counter1 = 0;
 354                         counter1 -= dtime;
 355                         if (counter1 < 0.0) {
 356                                 counter1 = 0.1 * Rand(1, 20);
 357                                 mousespeed = v2s32(Rand(-20, 20), Rand(-15, 20));
 358                         }
 359                 }
 360                 {
 361                         static float counter1 = 0;
 362                         counter1 -= dtime;
 363                         if (counter1 < 0.0) {
 364                                 counter1 = 0.1 * Rand(1, 30);
 365                                 leftdown = !leftdown;
 366                                 if (leftdown)
 367                                         leftclicked = true;
 368                                 if (!leftdown)
 369                                         leftreleased = true;
 370                         }
 371                 }
 372                 {
 373                         static float counter1 = 0;
 374                         counter1 -= dtime;
 375                         if (counter1 < 0.0) {
 376                                 counter1 = 0.1 * Rand(1, 15);
 377                                 rightdown = !rightdown;
 378                                 if (rightdown)
 379                                         rightclicked = true;
 380                                 if (!rightdown)
 381                                         rightreleased = true;
 382                         }
 383                 }
 384                 mousepos += mousespeed;
 385         }
 386
 387         s32 Rand(s32 min, s32 max);
 388
 389 private:
 390         KeyList keydown;
 391         v2s32 mousepos;
 392         v2s32 mousespeed;
 393         bool leftdown;
 394         bool rightdown;
 395         bool leftclicked;
 396         bool rightclicked;
 397         bool leftreleased;
 398         bool rightreleased;
 399 };
 400
 401 #endif