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