src/camera.cpp

   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 #include "camera.h"
  21 #include "debug.h"
  22 #include "client.h"
  23 #include "main.h" // for g_settings
  24 #include "map.h"
  25 #include "clientmap.h" // MapDrawControl
  26 #include "mesh.h"
  27 #include "player.h"
  28 #include "tile.h"
  29 #include <cmath>
  30 #include "settings.h"
  31 #include "itemdef.h" // For wield visualization
  32 #include "noise.h" // easeCurve
  33 #include "gamedef.h"
  34 #include "sound.h"
  35 #include "event.h"
  36 #include "util/numeric.h"
  37 #include "util/mathconstants.h"
  38
  39 Camera::Camera(scene::ISceneManager* smgr, MapDrawControl& draw_control,
  40                 IGameDef *gamedef):
  41         m_smgr(smgr),
  42         m_playernode(NULL),
  43         m_headnode(NULL),
  44         m_cameranode(NULL),
  45
  46         m_wieldmgr(NULL),
  47         m_wieldnode(NULL),
  48         m_wieldlight(0),
  49
  50         m_draw_control(draw_control),
  51         m_gamedef(gamedef),
  52
  53         m_camera_position(0,0,0),
  54         m_camera_direction(0,0,0),
  55
  56         m_aspect(1.0),
  57         m_fov_x(1.0),
  58         m_fov_y(1.0),
  59
  60         m_added_frametime(0),
  61         m_added_frames(0),
  62         m_range_old(0),
  63         m_frametime_old(0),
  64         m_frametime_counter(0),
  65         m_time_per_range(30. / 50), // a sane default of 30ms per 50 nodes of range
  66
  67         m_view_bobbing_anim(0),
  68         m_view_bobbing_state(0),
  69         m_view_bobbing_speed(0),
  70         m_view_bobbing_fall(0),
  71
  72         m_digging_anim(0),
  73         m_digging_button(-1),
  74         m_dummymesh(createCubeMesh(v3f(1,1,1))),
  75
  76         m_wield_change_timer(0.125),
  77         m_wield_mesh_next(NULL),
  78         m_previous_playeritem(-1),
  79         m_previous_itemname("")
  80 {
  81         //dstream<<__FUNCTION_NAME<<std::endl;
  82
  83         // note: making the camera node a child of the player node
  84         // would lead to unexpected behaviour, so we don't do that.
  85         m_playernode = smgr->addEmptySceneNode(smgr->getRootSceneNode());
  86         m_headnode = smgr->addEmptySceneNode(m_playernode);
  87         m_cameranode = smgr->addCameraSceneNode(smgr->getRootSceneNode());
  88         m_cameranode->bindTargetAndRotation(true);
  89
  90         // This needs to be in its own scene manager. It is drawn after
  91         // all other 3D scene nodes and before the GUI.
  92         m_wieldmgr = smgr->createNewSceneManager();
  93         m_wieldmgr->addCameraSceneNode();
  94         m_wieldnode = m_wieldmgr->addMeshSceneNode(m_dummymesh, NULL);  // need a dummy mesh
  95 }
  96
  97 Camera::~Camera()
  98 {
  99         m_wieldmgr->drop();
 100
 101         delete m_dummymesh;
 102 }
 103
 104 bool Camera::successfullyCreated(std::wstring& error_message)
 105 {
 106         if (m_playernode == NULL)
 107         {
 108                 error_message = L"Failed to create the player scene node";
 109                 return false;
 110         }
 111         if (m_headnode == NULL)
 112         {
 113                 error_message = L"Failed to create the head scene node";
 114                 return false;
 115         }
 116         if (m_cameranode == NULL)
 117         {
 118                 error_message = L"Failed to create the camera scene node";
 119                 return false;
 120         }
 121         if (m_wieldmgr == NULL)
 122         {
 123                 error_message = L"Failed to create the wielded item scene manager";
 124                 return false;
 125         }
 126         if (m_wieldnode == NULL)
 127         {
 128                 error_message = L"Failed to create the wielded item scene node";
 129                 return false;
 130         }
 131         return true;
 132 }
 133
 134 // Returns the fractional part of x
 135 inline f32 my_modf(f32 x)
 136 {
 137         double dummy;
 138         return modf(x, &dummy);
 139 }
 140
 141 void Camera::step(f32 dtime)
 142 {
 143         if(m_view_bobbing_fall > 0)
 144         {
 145                 m_view_bobbing_fall -= 3 * dtime;
 146                 if(m_view_bobbing_fall <= 0)
 147                         m_view_bobbing_fall = -1; // Mark the effect as finished
 148         }
 149
 150         if(m_wield_change_timer < 0.125)
 151                 m_wield_change_timer += dtime;
 152         if(m_wield_change_timer > 0.125)
 153                 m_wield_change_timer = 0.125;
 154
 155         if(m_wield_change_timer >= 0 && m_wield_change_timer - dtime < 0) {
 156                 if(m_wield_mesh_next) {
 157                         m_wieldnode->setMesh(m_wield_mesh_next);
 158                         m_wieldnode->setVisible(true);
 159                 } else {
 160                         m_wieldnode->setVisible(false);
 161                 }
 162                 m_wield_mesh_next = NULL;
 163         }
 164
 165         if (m_view_bobbing_state != 0)
 166         {
 167                 //f32 offset = dtime * m_view_bobbing_speed * 0.035;
 168                 f32 offset = dtime * m_view_bobbing_speed * 0.030;
 169                 if (m_view_bobbing_state == 2)
 170                 {
 171 #if 0
 172                         // Animation is getting turned off
 173                         if (m_view_bobbing_anim < 0.5)
 174                                 m_view_bobbing_anim -= offset;
 175                         else
 176                                 m_view_bobbing_anim += offset;
 177                         if (m_view_bobbing_anim <= 0 || m_view_bobbing_anim >= 1)
 178                         {
 179                                 m_view_bobbing_anim = 0;
 180                                 m_view_bobbing_state = 0;
 181                         }
 182 #endif
 183 #if 1
 184                         // Animation is getting turned off
 185                         if(m_view_bobbing_anim < 0.25){
 186                                 m_view_bobbing_anim -= offset;
 187                         } else if(m_view_bobbing_anim > 0.75){
 188                                 m_view_bobbing_anim += offset;
 189                         } if(m_view_bobbing_anim < 0.5){
 190                                 m_view_bobbing_anim += offset;
 191                                 if(m_view_bobbing_anim > 0.5)
 192                                         m_view_bobbing_anim = 0.5;
 193                         } else {
 194                                 m_view_bobbing_anim -= offset;
 195                                 if(m_view_bobbing_anim < 0.5)
 196                                         m_view_bobbing_anim = 0.5;
 197                         }
 198                         if(m_view_bobbing_anim <= 0 || m_view_bobbing_anim >= 1 ||
 199                                         fabs(m_view_bobbing_anim - 0.5) < 0.01)
 200                         {
 201                                 m_view_bobbing_anim = 0;
 202                                 m_view_bobbing_state = 0;
 203                         }
 204 #endif
 205                 }
 206                 else
 207                 {
 208                         float was = m_view_bobbing_anim;
 209                         m_view_bobbing_anim = my_modf(m_view_bobbing_anim + offset);
 210                         bool step = (was == 0 ||
 211                                         (was < 0.5f && m_view_bobbing_anim >= 0.5f) ||
 212                                         (was > 0.5f && m_view_bobbing_anim <= 0.5f));
 213                         if(step){
 214                                 MtEvent *e = new SimpleTriggerEvent("ViewBobbingStep");
 215                                 m_gamedef->event()->put(e);
 216                         }
 217                 }
 218         }
 219
 220         if (m_digging_button != -1)
 221         {
 222                 f32 offset = dtime * 3.5;
 223                 float m_digging_anim_was = m_digging_anim;
 224                 m_digging_anim += offset;
 225                 if (m_digging_anim >= 1)
 226                 {
 227                         m_digging_anim = 0;
 228                         m_digging_button = -1;
 229                 }
 230                 float lim = 0.15;
 231                 if(m_digging_anim_was < lim && m_digging_anim >= lim)
 232                 {
 233                         if(m_digging_button == 0){
 234                                 MtEvent *e = new SimpleTriggerEvent("CameraPunchLeft");
 235                                 m_gamedef->event()->put(e);
 236                         } else if(m_digging_button == 1){
 237                                 MtEvent *e = new SimpleTriggerEvent("CameraPunchRight");
 238                                 m_gamedef->event()->put(e);
 239                         }
 240                 }
 241         }
 242 }
 243
 244 void Camera::update(LocalPlayer* player, f32 frametime, v2u32 screensize,
 245                 f32 tool_reload_ratio)
 246 {
 247         // Get player position
 248         // Smooth the movement when walking up stairs
 249         v3f old_player_position = m_playernode->getPosition();
 250         v3f player_position = player->getPosition();
 251         if (player->isAttached && player->parent)
 252                 player_position = player->parent->getPosition();
 253         //if(player->touching_ground && player_position.Y > old_player_position.Y)
 254         if(player->touching_ground &&
 255                         player_position.Y > old_player_position.Y)
 256         {
 257                 f32 oldy = old_player_position.Y;
 258                 f32 newy = player_position.Y;
 259                 f32 t = exp(-23*frametime);
 260                 player_position.Y = oldy * t + newy * (1-t);
 261         }
 262
 263         // Set player node transformation
 264         m_playernode->setPosition(player_position);
 265         m_playernode->setRotation(v3f(0, -1 * player->getYaw(), 0));
 266         m_playernode->updateAbsolutePosition();
 267
 268         // Get camera tilt timer (hurt animation)
 269         float cameratilt = fabs(fabs(player->hurt_tilt_timer-0.75)-0.75);
 270
 271         // Fall bobbing animation
 272         float fall_bobbing = 0;
 273         if(player->camera_impact >= 1)
 274         {
 275                 if(m_view_bobbing_fall == -1) // Effect took place and has finished
 276                         player->camera_impact = m_view_bobbing_fall = 0;
 277                 else if(m_view_bobbing_fall == 0) // Initialize effect
 278                         m_view_bobbing_fall = 1;
 279
 280                 // Convert 0 -> 1 to 0 -> 1 -> 0
 281                 fall_bobbing = m_view_bobbing_fall < 0.5 ? m_view_bobbing_fall * 2 : -(m_view_bobbing_fall - 0.5) * 2 + 1;
 282                 // Smoothen and invert the above
 283                 fall_bobbing = sin(fall_bobbing * 0.5 * M_PI) * -1;
 284                 // Amplify according to the intensity of the impact
 285                 fall_bobbing *= (1 - rangelim(50 / player->camera_impact, 0, 1)) * 5;
 286
 287                 fall_bobbing *= g_settings->getFloat("fall_bobbing_amount");
 288         }
 289
 290         // Set head node transformation
 291         m_headnode->setPosition(player->getEyeOffset()+v3f(0,cameratilt*-player->hurt_tilt_strength+fall_bobbing,0));
 292         m_headnode->setRotation(v3f(player->getPitch(), 0, cameratilt*player->hurt_tilt_strength));
 293         m_headnode->updateAbsolutePosition();
 294
 295         // Compute relative camera position and target
 296         v3f rel_cam_pos = v3f(0,0,0);
 297         v3f rel_cam_target = v3f(0,0,1);
 298         v3f rel_cam_up = v3f(0,1,0);
 299
 300         if (m_view_bobbing_anim != 0)
 301         {
 302                 f32 bobfrac = my_modf(m_view_bobbing_anim * 2);
 303                 f32 bobdir = (m_view_bobbing_anim < 0.5) ? 1.0 : -1.0;
 304
 305                 #if 1
 306                 f32 bobknob = 1.2;
 307                 f32 bobtmp = sin(pow(bobfrac, bobknob) * M_PI);
 308                 //f32 bobtmp2 = cos(pow(bobfrac, bobknob) * M_PI);
 309
 310                 v3f bobvec = v3f(
 311                         0.3 * bobdir * sin(bobfrac * M_PI),
 312                         -0.28 * bobtmp * bobtmp,
 313                         0.);
 314
 315                 //rel_cam_pos += 0.2 * bobvec;
 316                 //rel_cam_target += 0.03 * bobvec;
 317                 //rel_cam_up.rotateXYBy(0.02 * bobdir * bobtmp * M_PI);
 318                 float f = 1.0;
 319                 f *= g_settings->getFloat("view_bobbing_amount");
 320                 rel_cam_pos += bobvec * f;
 321                 //rel_cam_target += 0.995 * bobvec * f;
 322                 rel_cam_target += bobvec * f;
 323                 rel_cam_target.Z -= 0.005 * bobvec.Z * f;
 324                 //rel_cam_target.X -= 0.005 * bobvec.X * f;
 325                 //rel_cam_target.Y -= 0.005 * bobvec.Y * f;
 326                 rel_cam_up.rotateXYBy(-0.03 * bobdir * bobtmp * M_PI * f);
 327                 #else
 328                 f32 angle_deg = 1 * bobdir * sin(bobfrac * M_PI);
 329                 f32 angle_rad = angle_deg * M_PI / 180;
 330                 f32 r = 0.05;
 331                 v3f off = v3f(
 332                         r * sin(angle_rad),
 333                         r * (cos(angle_rad) - 1),
 334                         0);
 335                 rel_cam_pos += off;
 336                 //rel_cam_target += off;
 337                 rel_cam_up.rotateXYBy(angle_deg);
 338                 #endif
 339
 340         }
 341
 342         // Compute absolute camera position and target
 343         m_headnode->getAbsoluteTransformation().transformVect(m_camera_position, rel_cam_pos);
 344         m_headnode->getAbsoluteTransformation().rotateVect(m_camera_direction, rel_cam_target - rel_cam_pos);
 345
 346         v3f abs_cam_up;
 347         m_headnode->getAbsoluteTransformation().rotateVect(abs_cam_up, rel_cam_up);
 348
 349         // Set camera node transformation
 350         m_cameranode->setPosition(m_camera_position);
 351         m_cameranode->setUpVector(abs_cam_up);
 352         // *100.0 helps in large map coordinates
 353         m_cameranode->setTarget(m_camera_position + 100 * m_camera_direction);
 354
 355         // Get FOV setting
 356         f32 fov_degrees = g_settings->getFloat("fov");
 357         fov_degrees = MYMAX(fov_degrees, 10.0);
 358         fov_degrees = MYMIN(fov_degrees, 170.0);
 359
 360         // FOV and aspect ratio
 361         m_aspect = (f32)screensize.X / (f32) screensize.Y;
 362         m_fov_y = fov_degrees * M_PI / 180.0;
 363         // Increase vertical FOV on lower aspect ratios (<16:10)
 364         m_fov_y *= MYMAX(1.0, MYMIN(1.4, sqrt(16./10. / m_aspect)));
 365         m_fov_x = 2 * atan(m_aspect * tan(0.5 * m_fov_y));
 366         m_cameranode->setAspectRatio(m_aspect);
 367         m_cameranode->setFOV(m_fov_y);
 368
 369         // Position the wielded item
 370         //v3f wield_position = v3f(45, -35, 65);
 371         v3f wield_position = v3f(55, -35, 65);
 372         //v3f wield_rotation = v3f(-100, 120, -100);
 373         v3f wield_rotation = v3f(-100, 120, -100);
 374         if(m_wield_change_timer < 0)
 375                 wield_position.Y -= 40 + m_wield_change_timer*320;
 376         else
 377                 wield_position.Y -= 40 - m_wield_change_timer*320;
 378         if(m_digging_anim < 0.05 || m_digging_anim > 0.5){
 379                 f32 frac = 1.0;
 380                 if(m_digging_anim > 0.5)
 381                         frac = 2.0 * (m_digging_anim - 0.5);
 382                 // This value starts from 1 and settles to 0
 383                 f32 ratiothing = pow((1.0f - tool_reload_ratio), 0.5f);
 384                 //f32 ratiothing2 = pow(ratiothing, 0.5f);
 385                 f32 ratiothing2 = (easeCurve(ratiothing*0.5))*2.0;
 386                 wield_position.Y -= frac * 25.0 * pow(ratiothing2, 1.7f);
 387                 //wield_position.Z += frac * 5.0 * ratiothing2;
 388                 wield_position.X -= frac * 35.0 * pow(ratiothing2, 1.1f);
 389                 wield_rotation.Y += frac * 70.0 * pow(ratiothing2, 1.4f);
 390                 //wield_rotation.X -= frac * 15.0 * pow(ratiothing2, 1.4f);
 391                 //wield_rotation.Z += frac * 15.0 * pow(ratiothing2, 1.0f);
 392         }
 393         if (m_digging_button != -1)
 394         {
 395                 f32 digfrac = m_digging_anim;
 396                 wield_position.X -= 50 * sin(pow(digfrac, 0.8f) * M_PI);
 397                 wield_position.Y += 24 * sin(digfrac * 1.8 * M_PI);
 398                 wield_position.Z += 25 * 0.5;
 399
 400                 // Euler angles are PURE EVIL, so why not use quaternions?
 401                 core::quaternion quat_begin(wield_rotation * core::DEGTORAD);
 402                 core::quaternion quat_end(v3f(80, 30, 100) * core::DEGTORAD);
 403                 core::quaternion quat_slerp;
 404                 quat_slerp.slerp(quat_begin, quat_end, sin(digfrac * M_PI));
 405                 quat_slerp.toEuler(wield_rotation);
 406                 wield_rotation *= core::RADTODEG;
 407         }
 408         else {
 409                 f32 bobfrac = my_modf(m_view_bobbing_anim);
 410                 wield_position.X -= sin(bobfrac*M_PI*2.0) * 3.0;
 411                 wield_position.Y += sin(my_modf(bobfrac*2.0)*M_PI) * 3.0;
 412         }
 413         m_wieldnode->setPosition(wield_position);
 414         m_wieldnode->setRotation(wield_rotation);
 415         m_wieldlight = player->light;
 416
 417         // Render distance feedback loop
 418         updateViewingRange(frametime);
 419
 420         // If the player seems to be walking on solid ground,
 421         // view bobbing is enabled and free_move is off,
 422         // start (or continue) the view bobbing animation.
 423         v3f speed = player->getSpeed();
 424         if ((hypot(speed.X, speed.Z) > BS) &&
 425                 (player->touching_ground) &&
 426                 (g_settings->getBool("view_bobbing") == true) &&
 427                 (g_settings->getBool("free_move") == false ||
 428                                 !m_gamedef->checkLocalPrivilege("fly")))
 429         {
 430                 // Start animation
 431                 m_view_bobbing_state = 1;
 432                 m_view_bobbing_speed = MYMIN(speed.getLength(), 40);
 433         }
 434         else if (m_view_bobbing_state == 1)
 435         {
 436                 // Stop animation
 437                 m_view_bobbing_state = 2;
 438                 m_view_bobbing_speed = 60;
 439         }
 440 }
 441
 442 void Camera::updateViewingRange(f32 frametime_in)
 443 {
 444         if (m_draw_control.range_all)
 445                 return;
 446
 447         m_added_frametime += frametime_in;
 448         m_added_frames += 1;
 449
 450         // Actually this counter kind of sucks because frametime is busytime
 451         m_frametime_counter -= frametime_in;
 452         if (m_frametime_counter > 0)
 453                 return;
 454         m_frametime_counter = 0.2;
 455
 456         /*dstream<<__FUNCTION_NAME
 457                         <<": Collected "<<m_added_frames<<" frames, total of "
 458                         <<m_added_frametime<<"s."<<std::endl;
 459
 460         dstream<<"m_draw_control.blocks_drawn="
 461                         <<m_draw_control.blocks_drawn
 462                         <<", m_draw_control.blocks_would_have_drawn="
 463                         <<m_draw_control.blocks_would_have_drawn
 464                         <<std::endl;*/
 465
 466         // Get current viewing range and FPS settings
 467         f32 viewing_range_min = g_settings->getS16("viewing_range_nodes_min");
 468         viewing_range_min = MYMAX(5.0, viewing_range_min);
 469
 470         f32 viewing_range_max = g_settings->getS16("viewing_range_nodes_max");
 471         viewing_range_max = MYMAX(viewing_range_min, viewing_range_max);
 472
 473         // Immediately apply hard limits
 474         if(m_draw_control.wanted_range < viewing_range_min)
 475                 m_draw_control.wanted_range = viewing_range_min;
 476         if(m_draw_control.wanted_range > viewing_range_max)
 477                 m_draw_control.wanted_range = viewing_range_max;
 478
 479         // Just so big a value that everything rendered is visible
 480         // Some more allowance than viewing_range_max * BS because of clouds,
 481         // active objects, etc.
 482         if(viewing_range_max < 200*BS)
 483                 m_cameranode->setFarValue(200 * BS * 10);
 484         else
 485                 m_cameranode->setFarValue(viewing_range_max * BS * 10);
 486
 487         f32 wanted_fps = g_settings->getFloat("wanted_fps");
 488         wanted_fps = MYMAX(wanted_fps, 1.0);
 489         f32 wanted_frametime = 1.0 / wanted_fps;
 490
 491         m_draw_control.wanted_min_range = viewing_range_min;
 492         m_draw_control.wanted_max_blocks = (2.0*m_draw_control.blocks_would_have_drawn)+1;
 493         if (m_draw_control.wanted_max_blocks < 10)
 494                 m_draw_control.wanted_max_blocks = 10;
 495
 496         f32 block_draw_ratio = 1.0;
 497         if (m_draw_control.blocks_would_have_drawn != 0)
 498         {
 499                 block_draw_ratio = (f32)m_draw_control.blocks_drawn
 500                         / (f32)m_draw_control.blocks_would_have_drawn;
 501         }
 502
 503         // Calculate the average frametime in the case that all wanted
 504         // blocks had been drawn
 505         f32 frametime = m_added_frametime / m_added_frames / block_draw_ratio;
 506
 507         m_added_frametime = 0.0;
 508         m_added_frames = 0;
 509
 510         f32 wanted_frametime_change = wanted_frametime - frametime;
 511         //dstream<<"wanted_frametime_change="<<wanted_frametime_change<<std::endl;
 512
 513         // If needed frametime change is small, just return
 514         // This value was 0.4 for many months until 2011-10-18 by c55;
 515         // Let's see how this works out.
 516         if (fabs(wanted_frametime_change) < wanted_frametime*0.33)
 517         {
 518                 //dstream<<"ignoring small wanted_frametime_change"<<std::endl;
 519                 return;
 520         }
 521
 522         f32 range = m_draw_control.wanted_range;
 523         f32 new_range = range;
 524
 525         f32 d_range = range - m_range_old;
 526         f32 d_frametime = frametime - m_frametime_old;
 527         if (d_range != 0)
 528         {
 529                 m_time_per_range = d_frametime / d_range;
 530         }
 531
 532         // The minimum allowed calculated frametime-range derivative:
 533         // Practically this sets the maximum speed of changing the range.
 534         // The lower this value, the higher the maximum changing speed.
 535         // A low value here results in wobbly range (0.001)
 536         // A high value here results in slow changing range (0.0025)
 537         // SUGG: This could be dynamically adjusted so that when
 538         //       the camera is turning, this is lower
 539         //f32 min_time_per_range = 0.0015;
 540         f32 min_time_per_range = 0.0010;
 541         //f32 min_time_per_range = 0.05 / range;
 542         if(m_time_per_range < min_time_per_range)
 543         {
 544                 m_time_per_range = min_time_per_range;
 545                 //dstream<<"m_time_per_range="<<m_time_per_range<<" (min)"<<std::endl;
 546         }
 547         else
 548         {
 549                 //dstream<<"m_time_per_range="<<m_time_per_range<<std::endl;
 550         }
 551
 552         f32 wanted_range_change = wanted_frametime_change / m_time_per_range;
 553         // Dampen the change a bit to kill oscillations
 554         //wanted_range_change *= 0.9;
 555         //wanted_range_change *= 0.75;
 556         wanted_range_change *= 0.5;
 557         //dstream<<"wanted_range_change="<<wanted_range_change<<std::endl;
 558
 559         // If needed range change is very small, just return
 560         if(fabs(wanted_range_change) < 0.001)
 561         {
 562                 //dstream<<"ignoring small wanted_range_change"<<std::endl;
 563                 return;
 564         }
 565
 566         new_range += wanted_range_change;
 567
 568         //f32 new_range_unclamped = new_range;
 569         new_range = MYMAX(new_range, viewing_range_min);
 570         new_range = MYMIN(new_range, viewing_range_max);
 571         /*dstream<<"new_range="<<new_range_unclamped
 572                         <<", clamped to "<<new_range<<std::endl;*/
 573
 574         m_draw_control.wanted_range = new_range;
 575
 576         m_range_old = new_range;
 577         m_frametime_old = frametime;
 578 }
 579
 580 void Camera::setDigging(s32 button)
 581 {
 582         if (m_digging_button == -1)
 583                 m_digging_button = button;
 584 }
 585
 586 void Camera::wield(const ItemStack &item, u16 playeritem)
 587 {
 588         IItemDefManager *idef = m_gamedef->idef();
 589         std::string itemname = item.getDefinition(idef).name;
 590         m_wield_mesh_next = idef->getWieldMesh(itemname, m_gamedef);
 591         if(playeritem != m_previous_playeritem) {
 592                 m_previous_playeritem = playeritem;
 593                 m_previous_itemname = itemname;
 594                 if(m_wield_change_timer >= 0.125)
 595                         m_wield_change_timer = -0.125;
 596                 else if(m_wield_change_timer > 0) {
 597                         m_wield_change_timer = -m_wield_change_timer;
 598                 }
 599         } else {
 600                 if(m_wield_mesh_next) {
 601                         m_wieldnode->setMesh(m_wield_mesh_next);
 602                         m_wieldnode->setVisible(true);
 603                 } else {
 604                         m_wieldnode->setVisible(false);
 605                 }
 606                 m_wield_mesh_next = NULL;
 607                 if(m_previous_itemname != itemname) {
 608                         m_previous_itemname = itemname;
 609                         m_wield_change_timer = 0;
 610                 }
 611                 else
 612                         m_wield_change_timer = 0.125;
 613         }
 614 }
 615
 616 void Camera::drawWieldedTool()
 617 {
 618         // Set vertex colors of wield mesh according to light level
 619         u8 li = m_wieldlight;
 620         video::SColor color(255,li,li,li);
 621         setMeshColor(m_wieldnode->getMesh(), color);
 622
 623         // Clear Z buffer
 624         m_wieldmgr->getVideoDriver()->clearZBuffer();
 625
 626         // Draw the wielded node (in a separate scene manager)
 627         scene::ICameraSceneNode* cam = m_wieldmgr->getActiveCamera();
 628         cam->setAspectRatio(m_cameranode->getAspectRatio());
 629         cam->setFOV(72.0*M_PI/180.0);
 630         cam->setNearValue(0.1);
 631         cam->setFarValue(100);
 632         m_wieldmgr->drawAll();
 633 }