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 #include "renderingengine.h"
  28
  29 #ifdef HAVE_TOUCHSCREENGUI
  30 #include "touchscreengui.h"
  31 #endif
  32
  33 class KeyList : private std::list<KeyPress>
  34 {
  35         typedef std::list<KeyPress> super;
  36         typedef super::iterator iterator;
  37         typedef super::const_iterator const_iterator;
  38
  39         virtual const_iterator find(const KeyPress &key) const
  40         {
  41                 const_iterator f(begin());
  42                 const_iterator e(end());
  43
  44                 while (f != e) {
  45                         if (*f == key)
  46                                 return f;
  47
  48                         ++f;
  49                 }
  50
  51                 return e;
  52         }
  53
  54         virtual iterator find(const KeyPress &key)
  55         {
  56                 iterator f(begin());
  57                 iterator e(end());
  58
  59                 while (f != e) {
  60                         if (*f == key)
  61                                 return f;
  62
  63                         ++f;
  64                 }
  65
  66                 return e;
  67         }
  68
  69 public:
  70         void clear() { super::clear(); }
  71
  72         void set(const KeyPress &key)
  73         {
  74                 if (find(key) == end())
  75                         push_back(key);
  76         }
  77
  78         void unset(const KeyPress &key)
  79         {
  80                 iterator p(find(key));
  81
  82                 if (p != end())
  83                         erase(p);
  84         }
  85
  86         void toggle(const KeyPress &key)
  87         {
  88                 iterator p(this->find(key));
  89
  90                 if (p != end())
  91                         erase(p);
  92                 else
  93                         push_back(key);
  94         }
  95
  96         bool operator[](const KeyPress &key) const { return find(key) != end(); }
  97 };
  98
  99 class MyEventReceiver : public IEventReceiver
 100 {
 101 public:
 102         // This is the one method that we have to implement
 103         virtual bool OnEvent(const SEvent &event);
 104
 105         bool IsKeyDown(const KeyPress &keyCode) const { return keyIsDown[keyCode]; }
 106
 107         // Checks whether a key was down and resets the state
 108         bool WasKeyDown(const KeyPress &keyCode)
 109         {
 110                 bool b = keyWasDown[keyCode];
 111                 if (b)
 112                         keyWasDown.unset(keyCode);
 113                 return b;
 114         }
 115
 116         void listenForKey(const KeyPress &keyCode) { keysListenedFor.set(keyCode); }
 117         void dontListenForKeys() { keysListenedFor.clear(); }
 118
 119         s32 getMouseWheel()
 120         {
 121                 s32 a = mouse_wheel;
 122                 mouse_wheel = 0;
 123                 return a;
 124         }
 125
 126         void clearInput()
 127         {
 128                 keyIsDown.clear();
 129                 keyWasDown.clear();
 130
 131                 leftclicked = false;
 132                 rightclicked = false;
 133                 leftreleased = false;
 134                 rightreleased = false;
 135
 136                 left_active = false;
 137                 middle_active = false;
 138                 right_active = false;
 139
 140                 mouse_wheel = 0;
 141         }
 142
 143         MyEventReceiver()
 144         {
 145 #ifdef HAVE_TOUCHSCREENGUI
 146                 m_touchscreengui = NULL;
 147 #endif
 148         }
 149
 150         bool leftclicked = false;
 151         bool rightclicked = false;
 152         bool leftreleased = false;
 153         bool rightreleased = false;
 154
 155         bool left_active = false;
 156         bool middle_active = false;
 157         bool right_active = false;
 158
 159         s32 mouse_wheel = 0;
 160
 161         JoystickController *joystick = nullptr;
 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(MyEventReceiver *receiver) : m_receiver(receiver)
 224         {
 225                 m_receiver->joystick = &joystick;
 226         }
 227         virtual bool isKeyDown(const KeyPress &keyCode)
 228         {
 229                 return m_receiver->IsKeyDown(keyCode);
 230         }
 231         virtual bool wasKeyDown(const KeyPress &keyCode)
 232         {
 233                 return m_receiver->WasKeyDown(keyCode);
 234         }
 235         virtual void listenForKey(const KeyPress &keyCode)
 236         {
 237                 m_receiver->listenForKey(keyCode);
 238         }
 239         virtual void dontListenForKeys() { m_receiver->dontListenForKeys(); }
 240         virtual v2s32 getMousePos()
 241         {
 242                 if (RenderingEngine::get_raw_device()->getCursorControl()) {
 243                         return RenderingEngine::get_raw_device()
 244                                         ->getCursorControl()
 245                                         ->getPosition();
 246                 } else {
 247                         return m_mousepos;
 248                 }
 249         }
 250         virtual void setMousePos(s32 x, s32 y)
 251         {
 252                 if (RenderingEngine::get_raw_device()->getCursorControl()) {
 253                         RenderingEngine::get_raw_device()
 254                                         ->getCursorControl()
 255                                         ->setPosition(x, y);
 256                 } else {
 257                         m_mousepos = v2s32(x, y);
 258                 }
 259         }
 260
 261         virtual bool getLeftState() { return m_receiver->left_active; }
 262         virtual bool getRightState() { return m_receiver->right_active; }
 263
 264         virtual bool getLeftClicked() { return m_receiver->leftclicked; }
 265         virtual bool getRightClicked() { return m_receiver->rightclicked; }
 266         virtual void resetLeftClicked() { m_receiver->leftclicked = false; }
 267         virtual void resetRightClicked() { m_receiver->rightclicked = false; }
 268
 269         virtual bool getLeftReleased() { return m_receiver->leftreleased; }
 270         virtual bool getRightReleased() { return m_receiver->rightreleased; }
 271         virtual void resetLeftReleased() { m_receiver->leftreleased = false; }
 272         virtual void resetRightReleased() { m_receiver->rightreleased = false; }
 273
 274         virtual s32 getMouseWheel() { return m_receiver->getMouseWheel(); }
 275
 276         void clear()
 277         {
 278                 joystick.clear();
 279                 m_receiver->clearInput();
 280         }
 281
 282 private:
 283         MyEventReceiver *m_receiver = nullptr;
 284         v2s32 m_mousepos;
 285 };
 286
 287 class RandomInputHandler : public InputHandler
 288 {
 289 public:
 290         RandomInputHandler() {}
 291         virtual bool isKeyDown(const KeyPress &keyCode) { return keydown[keyCode]; }
 292         virtual bool wasKeyDown(const KeyPress &keyCode) { return false; }
 293         virtual v2s32 getMousePos() { return mousepos; }
 294         virtual void setMousePos(s32 x, s32 y) { mousepos = v2s32(x, y); }
 295
 296         virtual bool getLeftState() { return leftdown; }
 297         virtual bool getRightState() { return rightdown; }
 298
 299         virtual bool getLeftClicked() { return leftclicked; }
 300         virtual bool getRightClicked() { return rightclicked; }
 301         virtual void resetLeftClicked() { leftclicked = false; }
 302         virtual void resetRightClicked() { rightclicked = false; }
 303
 304         virtual bool getLeftReleased() { return leftreleased; }
 305         virtual bool getRightReleased() { return rightreleased; }
 306         virtual void resetLeftReleased() { leftreleased = false; }
 307         virtual void resetRightReleased() { rightreleased = false; }
 308
 309         virtual s32 getMouseWheel() { return 0; }
 310
 311         virtual void step(float dtime)
 312         {
 313                 {
 314                         static float counter1 = 0;
 315                         counter1 -= dtime;
 316                         if (counter1 < 0.0) {
 317                                 counter1 = 0.1 * Rand(1, 40);
 318                                 keydown.toggle(getKeySetting("keymap_jump"));
 319                         }
 320                 }
 321                 {
 322                         static float counter1 = 0;
 323                         counter1 -= dtime;
 324                         if (counter1 < 0.0) {
 325                                 counter1 = 0.1 * Rand(1, 40);
 326                                 keydown.toggle(getKeySetting("keymap_special1"));
 327                         }
 328                 }
 329                 {
 330                         static float counter1 = 0;
 331                         counter1 -= dtime;
 332                         if (counter1 < 0.0) {
 333                                 counter1 = 0.1 * Rand(1, 40);
 334                                 keydown.toggle(getKeySetting("keymap_forward"));
 335                         }
 336                 }
 337                 {
 338                         static float counter1 = 0;
 339                         counter1 -= dtime;
 340                         if (counter1 < 0.0) {
 341                                 counter1 = 0.1 * Rand(1, 40);
 342                                 keydown.toggle(getKeySetting("keymap_left"));
 343                         }
 344                 }
 345                 {
 346                         static float counter1 = 0;
 347                         counter1 -= dtime;
 348                         if (counter1 < 0.0) {
 349                                 counter1 = 0.1 * Rand(1, 20);
 350                                 mousespeed = v2s32(Rand(-20, 20), Rand(-15, 20));
 351                         }
 352                 }
 353                 {
 354                         static float counter1 = 0;
 355                         counter1 -= dtime;
 356                         if (counter1 < 0.0) {
 357                                 counter1 = 0.1 * Rand(1, 30);
 358                                 leftdown = !leftdown;
 359                                 if (leftdown)
 360                                         leftclicked = true;
 361                                 if (!leftdown)
 362                                         leftreleased = true;
 363                         }
 364                 }
 365                 {
 366                         static float counter1 = 0;
 367                         counter1 -= dtime;
 368                         if (counter1 < 0.0) {
 369                                 counter1 = 0.1 * Rand(1, 15);
 370                                 rightdown = !rightdown;
 371                                 if (rightdown)
 372                                         rightclicked = true;
 373                                 if (!rightdown)
 374                                         rightreleased = true;
 375                         }
 376                 }
 377                 mousepos += mousespeed;
 378         }
 379
 380         s32 Rand(s32 min, s32 max);
 381
 382 private:
 383         KeyList keydown;
 384         v2s32 mousepos;
 385         v2s32 mousespeed;
 386         bool leftdown = false;
 387         bool rightdown = false;
 388         bool leftclicked = false;
 389         bool rightclicked = false;
 390         bool leftreleased = false;
 391         bool rightreleased = false;
 392 };
 393
 394 #endif