src/camera.cpp

   1 /*
   2 Minetest-c55
   3 Copyright (C) 2010-2011 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 General Public License as published by
   7 the Free Software Foundation; either version 2 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 General Public License for more details.
  14
  15 You should have received a copy of the GNU 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 "player.h"
  26 #include "tile.h"
  27 #include <cmath>
  28
  29 const s32 BOBFRAMES = 0x1000000; // must be a power of two
  30
  31 Camera::Camera(scene::ISceneManager* smgr, MapDrawControl& draw_control):
  32         m_smgr(smgr),
  33         m_playernode(NULL),
  34         m_headnode(NULL),
  35         m_cameranode(NULL),
  36         m_draw_control(draw_control),
  37         m_viewing_range_min(5.0),
  38         m_viewing_range_max(5.0),
  39
  40         m_camera_position(0,0,0),
  41         m_camera_direction(0,0,0),
  42
  43         m_aspect(1.0),
  44         m_fov_x(1.0),
  45         m_fov_y(1.0),
  46
  47         m_wanted_frametime(0.0),
  48         m_added_frametime(0),
  49         m_added_frames(0),
  50         m_range_old(0),
  51         m_frametime_old(0),
  52         m_frametime_counter(0),
  53         m_time_per_range(30. / 50), // a sane default of 30ms per 50 nodes of range
  54
  55         m_view_bobbing_anim(0),
  56         m_view_bobbing_state(0),
  57         m_view_bobbing_speed(0),
  58
  59         m_digging_anim(0),
  60         m_digging_speed(0)
  61 {
  62         //dstream<<__FUNCTION_NAME<<std::endl;
  63
  64         // note: making the camera node a child of the player node
  65         // would lead to unexpected behaviour, so we don't do that.
  66         m_playernode = smgr->addEmptySceneNode(smgr->getRootSceneNode());
  67         m_headnode = smgr->addEmptySceneNode(m_playernode);
  68         m_cameranode = smgr->addCameraSceneNode(smgr->getRootSceneNode());
  69         m_cameranode->bindTargetAndRotation(true);
  70         m_wieldnode = new ExtrudedSpriteSceneNode(m_headnode, smgr, -1, v3f(1.3, -1, 2), v3f(-20, -100, 20), v3f(1));
  71
  72         updateSettings();
  73 }
  74
  75 Camera::~Camera()
  76 {
  77 }
  78
  79 bool Camera::successfullyCreated(std::wstring& error_message)
  80 {
  81         if (m_playernode == NULL)
  82         {
  83                 error_message = L"Failed to create the player scene node";
  84                 return false;
  85         }
  86         if (m_headnode == NULL)
  87         {
  88                 error_message = L"Failed to create the head scene node";
  89                 return false;
  90         }
  91         if (m_cameranode == NULL)
  92         {
  93                 error_message = L"Failed to create the camera scene node";
  94                 return false;
  95         }
  96         return true;
  97 }
  98
  99 void Camera::step(f32 dtime)
 100 {
 101         if (m_view_bobbing_state != 0)
 102         {
 103                 s32 offset = MYMAX(dtime * m_view_bobbing_speed * 0.035 * BOBFRAMES, 1);
 104                 if (m_view_bobbing_state == 2)
 105                 {
 106                         // Animation is getting turned off
 107                         s32 subanim = (m_view_bobbing_anim & (BOBFRAMES/2-1));
 108                         if (subanim < BOBFRAMES/4)
 109                                 offset = -1 *  MYMIN(offset, subanim);
 110                         else
 111                                 offset = MYMIN(offset, BOBFRAMES/2 - subanim);
 112                 }
 113                 m_view_bobbing_anim = (m_view_bobbing_anim + offset) & (BOBFRAMES-1);
 114         }
 115 }
 116
 117 void Camera::update(LocalPlayer* player, f32 frametime, v2u32 screensize)
 118 {
 119         // Set player node transformation
 120         m_playernode->setPosition(player->getPosition());
 121         m_playernode->setRotation(v3f(0, -1 * player->getYaw(), 0));
 122         m_playernode->updateAbsolutePosition();
 123
 124         // Set head node transformation
 125         v3f eye_offset = player->getEyePosition() - player->getPosition();
 126         m_headnode->setPosition(eye_offset);
 127         m_headnode->setRotation(v3f(player->getPitch(), 0, 0));
 128         m_headnode->updateAbsolutePosition();
 129
 130         // Compute relative camera position and target
 131         v3f rel_cam_pos = v3f(0,0,0);
 132         v3f rel_cam_target = v3f(0,0,1);
 133         v3f rel_cam_up = v3f(0,1,0);
 134
 135         s32 bobframe = m_view_bobbing_anim & (BOBFRAMES/2-1);
 136         if (bobframe != 0)
 137         {
 138                 f32 bobfrac = (f32) bobframe / (BOBFRAMES/2);
 139                 f32 bobdir = (m_view_bobbing_anim < (BOBFRAMES/2)) ? 1.0 : -1.0;
 140
 141                 #if 1
 142                 f32 bobknob = 1.2;
 143                 f32 bobtmp = sin(pow(bobfrac, bobknob) * PI);
 144
 145                 v3f bobvec = v3f(
 146                         bobdir * sin(bobfrac * PI),
 147                         0.8 * bobtmp * bobtmp,
 148                         0.);
 149
 150                 rel_cam_pos += 0.03 * bobvec;
 151                 rel_cam_target += 0.045 * bobvec;
 152                 rel_cam_up.rotateXYBy(0.03 * bobdir * bobtmp * PI);
 153                 #else
 154                 f32 angle_deg = 1 * bobdir * sin(bobfrac * PI);
 155                 f32 angle_rad = angle_deg * PI / 180;
 156                 f32 r = 0.05;
 157                 v3f off = v3f(
 158                         r * sin(angle_rad),
 159                         r * (cos(angle_rad) - 1),
 160                         0);
 161                 rel_cam_pos += off;
 162                 //rel_cam_target += off;
 163                 rel_cam_up.rotateXYBy(angle_deg);
 164                 #endif
 165
 166         }
 167
 168         // Compute absolute camera position and target
 169         m_headnode->getAbsoluteTransformation().transformVect(m_camera_position, rel_cam_pos);
 170         m_headnode->getAbsoluteTransformation().transformVect(m_camera_direction, rel_cam_target);
 171         m_camera_direction -= m_camera_position;
 172
 173         v3f abs_cam_up;
 174         m_headnode->getAbsoluteTransformation().transformVect(abs_cam_up, rel_cam_pos + rel_cam_up);
 175         abs_cam_up -= m_camera_position;
 176
 177         // Set camera node transformation
 178         m_cameranode->setPosition(m_camera_position);
 179         m_cameranode->setUpVector(abs_cam_up);
 180         m_cameranode->setTarget(m_camera_position + m_camera_direction);
 181
 182         // FOV and and aspect ratio
 183         m_aspect = (f32)screensize.X / (f32) screensize.Y;
 184         m_fov_x = 2 * atan(0.5 * m_aspect * tan(m_fov_y));
 185         m_cameranode->setAspectRatio(m_aspect);
 186         m_cameranode->setFOV(m_fov_y);
 187         // Just so big a value that everything rendered is visible
 188         // Some more allowance that m_viewing_range_max * BS because of active objects etc.
 189         m_cameranode->setFarValue(m_viewing_range_max * BS * 10);
 190
 191         // Render distance feedback loop
 192         updateViewingRange(frametime);
 193
 194         // If the player seems to be walking on solid ground,
 195         // view bobbing is enabled and free_move is off,
 196         // start (or continue) the view bobbing animation.
 197         v3f speed = player->getSpeed();
 198         if ((hypot(speed.X, speed.Z) > BS) &&
 199                 (player->touching_ground) &&
 200                 (g_settings.getBool("view_bobbing") == true) &&
 201                 (g_settings.getBool("free_move") == false))
 202         {
 203                 // Start animation
 204                 m_view_bobbing_state = 1;
 205                 m_view_bobbing_speed = MYMIN(speed.getLength(), 40);
 206         }
 207         else if (m_view_bobbing_state == 1)
 208         {
 209                 // Stop animation
 210                 m_view_bobbing_state = 2;
 211                 m_view_bobbing_speed = 100;
 212         }
 213         else if (m_view_bobbing_state == 2 && bobframe == 0)
 214         {
 215                 // Stop animation completed
 216                 m_view_bobbing_state = 0;
 217         }
 218 }
 219
 220 void Camera::updateViewingRange(f32 frametime_in)
 221 {
 222         if (m_draw_control.range_all)
 223                 return;
 224
 225         m_added_frametime += frametime_in;
 226         m_added_frames += 1;
 227
 228         // Actually this counter kind of sucks because frametime is busytime
 229         m_frametime_counter -= frametime_in;
 230         if (m_frametime_counter > 0)
 231                 return;
 232         m_frametime_counter = 0.2;
 233
 234         /*dstream<<__FUNCTION_NAME
 235                         <<": Collected "<<m_added_frames<<" frames, total of "
 236                         <<m_added_frametime<<"s."<<std::endl;
 237
 238         dstream<<"m_draw_control.blocks_drawn="
 239                         <<m_draw_control.blocks_drawn
 240                         <<", m_draw_control.blocks_would_have_drawn="
 241                         <<m_draw_control.blocks_would_have_drawn
 242                         <<std::endl;*/
 243
 244         m_draw_control.wanted_min_range = m_viewing_range_min;
 245         m_draw_control.wanted_max_blocks = (1.5*m_draw_control.blocks_would_have_drawn)+1;
 246         if (m_draw_control.wanted_max_blocks < 10)
 247                 m_draw_control.wanted_max_blocks = 10;
 248
 249         f32 block_draw_ratio = 1.0;
 250         if (m_draw_control.blocks_would_have_drawn != 0)
 251         {
 252                 block_draw_ratio = (f32)m_draw_control.blocks_drawn
 253                         / (f32)m_draw_control.blocks_would_have_drawn;
 254         }
 255
 256         // Calculate the average frametime in the case that all wanted
 257         // blocks had been drawn
 258         f32 frametime = m_added_frametime / m_added_frames / block_draw_ratio;
 259
 260         m_added_frametime = 0.0;
 261         m_added_frames = 0;
 262
 263         f32 wanted_frametime_change = m_wanted_frametime - frametime;
 264         //dstream<<"wanted_frametime_change="<<wanted_frametime_change<<std::endl;
 265
 266         // If needed frametime change is small, just return
 267         if (fabs(wanted_frametime_change) < m_wanted_frametime*0.4)
 268         {
 269                 //dstream<<"ignoring small wanted_frametime_change"<<std::endl;
 270                 return;
 271         }
 272
 273         f32 range = m_draw_control.wanted_range;
 274         f32 new_range = range;
 275
 276         f32 d_range = range - m_range_old;
 277         f32 d_frametime = frametime - m_frametime_old;
 278         if (d_range != 0)
 279         {
 280                 m_time_per_range = d_frametime / d_range;
 281         }
 282
 283         // The minimum allowed calculated frametime-range derivative:
 284         // Practically this sets the maximum speed of changing the range.
 285         // The lower this value, the higher the maximum changing speed.
 286         // A low value here results in wobbly range (0.001)
 287         // A high value here results in slow changing range (0.0025)
 288         // SUGG: This could be dynamically adjusted so that when
 289         //       the camera is turning, this is lower
 290         //f32 min_time_per_range = 0.0015;
 291         f32 min_time_per_range = 0.0010;
 292         //f32 min_time_per_range = 0.05 / range;
 293         if(m_time_per_range < min_time_per_range)
 294         {
 295                 m_time_per_range = min_time_per_range;
 296                 //dstream<<"m_time_per_range="<<m_time_per_range<<" (min)"<<std::endl;
 297         }
 298         else
 299         {
 300                 //dstream<<"m_time_per_range="<<m_time_per_range<<std::endl;
 301         }
 302
 303         f32 wanted_range_change = wanted_frametime_change / m_time_per_range;
 304         // Dampen the change a bit to kill oscillations
 305         //wanted_range_change *= 0.9;
 306         //wanted_range_change *= 0.75;
 307         wanted_range_change *= 0.5;
 308         //dstream<<"wanted_range_change="<<wanted_range_change<<std::endl;
 309
 310         // If needed range change is very small, just return
 311         if(fabs(wanted_range_change) < 0.001)
 312         {
 313                 //dstream<<"ignoring small wanted_range_change"<<std::endl;
 314                 return;
 315         }
 316
 317         new_range += wanted_range_change;
 318
 319         //f32 new_range_unclamped = new_range;
 320         new_range = MYMAX(new_range, m_viewing_range_min);
 321         new_range = MYMIN(new_range, m_viewing_range_max);
 322         /*dstream<<"new_range="<<new_range_unclamped
 323                         <<", clamped to "<<new_range<<std::endl;*/
 324
 325         m_draw_control.wanted_range = new_range;
 326
 327         m_range_old = new_range;
 328         m_frametime_old = frametime;
 329 }
 330
 331 void Camera::updateSettings()
 332 {
 333         m_viewing_range_min = g_settings.getS16("viewing_range_nodes_min");
 334         m_viewing_range_min = MYMAX(5.0, m_viewing_range_min);
 335
 336         m_viewing_range_max = g_settings.getS16("viewing_range_nodes_max");
 337         m_viewing_range_max = MYMAX(m_viewing_range_min, m_viewing_range_max);
 338
 339         f32 fov_degrees = g_settings.getFloat("fov");
 340         fov_degrees = MYMAX(fov_degrees, 10.0);
 341         fov_degrees = MYMIN(fov_degrees, 170.0);
 342         m_fov_y = fov_degrees * PI / 180.0;
 343
 344         f32 wanted_fps = g_settings.getFloat("wanted_fps");
 345         wanted_fps = MYMAX(wanted_fps, 1.0);
 346         m_wanted_frametime = 1.0 / wanted_fps;
 347 }
 348
 349 void Camera::wield(const InventoryItem* item)
 350 {
 351         if (item != NULL)
 352         {
 353                 bool isCube = false;
 354
 355                 // Try to make a MaterialItem cube.
 356                 if (std::string(item->getName()) == "MaterialItem")
 357                 {
 358                         // A block-type material
 359                         MaterialItem* mat_item = (MaterialItem*) item;
 360                         content_t content = mat_item->getMaterial();
 361                         if (content_features(content).solidness || content_features(content).visual_solidness)
 362                         {
 363                                 m_wieldnode->setCube(content_features(content).tiles);
 364                                 m_wieldnode->setScale(v3f(0.9));
 365                                 isCube = true;
 366                         }
 367                 }
 368
 369                 // If that failed, make an extruded sprite.
 370                 if (!isCube)
 371                 {
 372                         m_wieldnode->setSprite(item->getImageRaw());
 373                         m_wieldnode->setScale(v3f(1.2));
 374                 }
 375
 376                 m_wieldnode->setVisible(true);
 377         }
 378         else
 379         {
 380                 // Bare hands
 381                 dstream << "bare hands" << std::endl;
 382                 m_wieldnode->setVisible(false);
 383         }
 384 }
 385
 386 void Camera::setDigging(bool digging)
 387 {
 388         // TODO
 389 }
 390
 391
 392 ExtrudedSpriteSceneNode::ExtrudedSpriteSceneNode(
 393         scene::ISceneNode* parent,
 394         scene::ISceneManager* mgr,
 395         s32 id,
 396         const v3f& position,
 397         const v3f& rotation,
 398         const v3f& scale
 399 ):
 400         ISceneNode(parent, mgr, id, position, rotation, scale)
 401 {
 402         m_meshnode = mgr->addMeshSceneNode(NULL, this, -1, v3f(0,0,0), v3f(0,0,0), v3f(1,1,1), true);
 403         m_thickness = 0.1;
 404         m_cubemesh = NULL;
 405         m_is_cube = false;
 406 }
 407
 408 ExtrudedSpriteSceneNode::~ExtrudedSpriteSceneNode()
 409 {
 410         removeChild(m_meshnode);
 411         if (m_cubemesh)
 412                 m_cubemesh->drop();
 413 }
 414
 415 void ExtrudedSpriteSceneNode::setSprite(video::ITexture* texture)
 416 {
 417         if (texture == NULL)
 418         {
 419                 m_meshnode->setVisible(false);
 420                 return;
 421         }
 422
 423         io::path name = getExtrudedName(texture);
 424         scene::IMeshCache* cache = SceneManager->getMeshCache();
 425         scene::IAnimatedMesh* mesh = cache->getMeshByName(name);
 426         if (mesh != NULL)
 427         {
 428                 // Extruded texture has been found in cache.
 429                 m_meshnode->setMesh(mesh);
 430         }
 431         else
 432         {
 433                 // Texture was not yet extruded, do it now and save in cache
 434                 mesh = extrude(texture);
 435                 if (mesh == NULL)
 436                 {
 437                         dstream << "Warning: failed to extrude sprite" << std::endl;
 438                         m_meshnode->setVisible(false);
 439                         return;
 440                 }
 441                 cache->addMesh(name, mesh);
 442                 m_meshnode->setMesh(mesh);
 443                 mesh->drop();
 444         }
 445
 446         m_meshnode->setScale(v3f(1, 1, m_thickness));
 447         m_meshnode->getMaterial(0).setTexture(0, texture);
 448         m_meshnode->getMaterial(0).setFlag(video::EMF_LIGHTING, false);
 449         m_meshnode->getMaterial(0).setFlag(video::EMF_BILINEAR_FILTER, false);
 450         m_meshnode->getMaterial(0).MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 451         m_meshnode->setVisible(true);
 452         m_is_cube = false;
 453 }
 454
 455 void ExtrudedSpriteSceneNode::setCube(const TileSpec tiles[6])
 456 {
 457         if (m_cubemesh == NULL)
 458                 m_cubemesh = createCubeMesh();
 459
 460         m_meshnode->setMesh(m_cubemesh);
 461         m_meshnode->setScale(v3f(1));
 462         for (int i = 0; i < 6; ++i)
 463         {
 464                 // Get the tile texture and atlas transformation
 465                 video::ITexture* atlas = tiles[i].texture.atlas;
 466                 v2f pos = tiles[i].texture.pos;
 467                 v2f size = tiles[i].texture.size;
 468
 469                 // Set material flags and texture
 470                 video::SMaterial& material = m_meshnode->getMaterial(i);
 471                 material.setFlag(video::EMF_LIGHTING, false);
 472                 material.setFlag(video::EMF_BILINEAR_FILTER, false);
 473                 tiles[i].applyMaterialOptions(material);
 474                 material.setTexture(0, atlas);
 475                 material.getTextureMatrix(0).setTextureTranslate(pos.X, pos.Y);
 476                 material.getTextureMatrix(0).setTextureScale(size.X, size.Y);
 477         }
 478         m_meshnode->setVisible(true);
 479         m_is_cube = true;
 480 }
 481
 482 void ExtrudedSpriteSceneNode::removeSpriteFromCache(video::ITexture* texture)
 483 {
 484         scene::IMeshCache* cache = SceneManager->getMeshCache();
 485         scene::IAnimatedMesh* mesh = cache->getMeshByName(getExtrudedName(texture));
 486         if (mesh != NULL)
 487                 cache->removeMesh(mesh);
 488 }
 489
 490 void ExtrudedSpriteSceneNode::setSpriteThickness(f32 thickness)
 491 {
 492         m_thickness = thickness;
 493         if (!m_is_cube)
 494                 m_meshnode->setScale(v3f(1, 1, thickness));
 495 }
 496
 497 const core::aabbox3d<f32>& ExtrudedSpriteSceneNode::getBoundingBox() const
 498 {
 499         return m_meshnode->getBoundingBox();
 500 }
 501
 502 void ExtrudedSpriteSceneNode::OnRegisterSceneNode()
 503 {
 504         if (IsVisible)
 505                 SceneManager->registerNodeForRendering(this);
 506         ISceneNode::OnRegisterSceneNode();
 507 }
 508
 509 void ExtrudedSpriteSceneNode::render()
 510 {
 511         // do nothing
 512 }
 513
 514 io::path ExtrudedSpriteSceneNode::getExtrudedName(video::ITexture* texture)
 515 {
 516         io::path path = texture->getName();
 517         path.append("/[extruded]");
 518         return path;
 519 }
 520
 521 scene::IAnimatedMesh* ExtrudedSpriteSceneNode::extrudeARGB(u32 width, u32 height, u8* data)
 522 {
 523         const s32 argb_wstep = 4 * width;
 524         const s32 alpha_threshold = 1;
 525
 526         scene::IMeshBuffer* buf = new scene::SMeshBuffer();
 527         video::SColor c(255,255,255,255);
 528
 529         // Front and back
 530         {
 531                 video::S3DVertex vertices[8] =
 532                 {
 533                         video::S3DVertex(-0.5,-0.5,-0.5, 0,0,-1, c, 0,1),
 534                         video::S3DVertex(-0.5,+0.5,-0.5, 0,0,-1, c, 0,0),
 535                         video::S3DVertex(+0.5,+0.5,-0.5, 0,0,-1, c, 1,0),
 536                         video::S3DVertex(+0.5,-0.5,-0.5, 0,0,-1, c, 1,1),
 537                         video::S3DVertex(+0.5,-0.5,+0.5, 0,0,+1, c, 1,1),
 538                         video::S3DVertex(+0.5,+0.5,+0.5, 0,0,+1, c, 1,0),
 539                         video::S3DVertex(-0.5,+0.5,+0.5, 0,0,+1, c, 0,0),
 540                         video::S3DVertex(-0.5,-0.5,+0.5, 0,0,+1, c, 0,1),
 541                 };
 542                 u16 indices[12] = {0,1,2,2,3,0,4,5,6,6,7,4};
 543                 buf->append(vertices, 8, indices, 12);
 544         }
 545
 546         // "Interior"
 547         // (add faces where a solid pixel is next to a transparent one)
 548         u8* solidity = new u8[(width+2) * (height+2)];
 549         u32 wstep = width + 2;
 550         for (u32 y = 0; y < height + 2; ++y)
 551         {
 552                 u8* scanline = solidity + y * wstep;
 553                 if (y == 0 || y == height + 1)
 554                 {
 555                         for (u32 x = 0; x < width + 2; ++x)
 556                                 scanline[x] = 0;
 557                 }
 558                 else
 559                 {
 560                         scanline[0] = 0;
 561                         u8* argb_scanline = data + (y - 1) * argb_wstep;
 562                         for (u32 x = 0; x < width; ++x)
 563                                 scanline[x+1] = (argb_scanline[x*4+3] >= alpha_threshold);
 564                         scanline[width + 1] = 0;
 565                 }
 566         }
 567
 568         // without this, there would be occasional "holes" in the mesh
 569         f32 eps = 0.01;
 570
 571         for (u32 y = 0; y <= height; ++y)
 572         {
 573                 u8* scanline = solidity + y * wstep + 1;
 574                 for (u32 x = 0; x <= width; ++x)
 575                 {
 576                         if (scanline[x] && !scanline[x + wstep])
 577                         {
 578                                 u32 xx = x + 1;
 579                                 while (scanline[xx] && !scanline[xx + wstep])
 580                                         ++xx;
 581                                 f32 vx1 = (x - eps) / (f32) width - 0.5;
 582                                 f32 vx2 = (xx + eps) / (f32) width - 0.5;
 583                                 f32 vy = 0.5 - (y - eps) / (f32) height;
 584                                 f32 tx1 = x / (f32) width;
 585                                 f32 tx2 = xx / (f32) width;
 586                                 f32 ty = (y - 0.5) / (f32) height;
 587                                 video::S3DVertex vertices[8] =
 588                                 {
 589                                         video::S3DVertex(vx1,vy,-0.5, 0,-1,0, c, tx1,ty),
 590                                         video::S3DVertex(vx2,vy,-0.5, 0,-1,0, c, tx2,ty),
 591                                         video::S3DVertex(vx2,vy,+0.5, 0,-1,0, c, tx2,ty),
 592                                         video::S3DVertex(vx1,vy,+0.5, 0,-1,0, c, tx1,ty),
 593                                 };
 594                                 u16 indices[6] = {0,1,2,2,3,0};
 595                                 buf->append(vertices, 4, indices, 6);
 596                                 x = xx - 1;
 597                         }
 598                         if (!scanline[x] && scanline[x + wstep])
 599                         {
 600                                 u32 xx = x + 1;
 601                                 while (!scanline[xx] && scanline[xx + wstep])
 602                                         ++xx;
 603                                 f32 vx1 = (x - eps) / (f32) width - 0.5;
 604                                 f32 vx2 = (xx + eps) / (f32) width - 0.5;
 605                                 f32 vy = 0.5 - (y + eps) / (f32) height;
 606                                 f32 tx1 = x / (f32) width;
 607                                 f32 tx2 = xx / (f32) width;
 608                                 f32 ty = (y + 0.5) / (f32) height;
 609                                 video::S3DVertex vertices[8] =
 610                                 {
 611                                         video::S3DVertex(vx1,vy,-0.5, 0,1,0, c, tx1,ty),
 612                                         video::S3DVertex(vx1,vy,+0.5, 0,1,0, c, tx1,ty),
 613                                         video::S3DVertex(vx2,vy,+0.5, 0,1,0, c, tx2,ty),
 614                                         video::S3DVertex(vx2,vy,-0.5, 0,1,0, c, tx2,ty),
 615                                 };
 616                                 u16 indices[6] = {0,1,2,2,3,0};
 617                                 buf->append(vertices, 4, indices, 6);
 618                                 x = xx - 1;
 619                         }
 620                 }
 621         }
 622
 623         for (u32 x = 0; x <= width; ++x)
 624         {
 625                 u8* scancol = solidity + x + wstep;
 626                 for (u32 y = 0; y <= height; ++y)
 627                 {
 628                         if (scancol[y * wstep] && !scancol[y * wstep + 1])
 629                         {
 630                                 u32 yy = y + 1;
 631                                 while (scancol[yy * wstep] && !scancol[yy * wstep + 1])
 632                                         ++yy;
 633                                 f32 vx = (x - eps) / (f32) width - 0.5;
 634                                 f32 vy1 = 0.5 - (y - eps) / (f32) height;
 635                                 f32 vy2 = 0.5 - (yy + eps) / (f32) height;
 636                                 f32 tx = (x - 0.5) / (f32) width;
 637                                 f32 ty1 = y / (f32) height;
 638                                 f32 ty2 = yy / (f32) height;
 639                                 video::S3DVertex vertices[8] =
 640                                 {
 641                                         video::S3DVertex(vx,vy1,-0.5, 1,0,0, c, tx,ty1),
 642                                         video::S3DVertex(vx,vy1,+0.5, 1,0,0, c, tx,ty1),
 643                                         video::S3DVertex(vx,vy2,+0.5, 1,0,0, c, tx,ty2),
 644                                         video::S3DVertex(vx,vy2,-0.5, 1,0,0, c, tx,ty2),
 645                                 };
 646                                 u16 indices[6] = {0,1,2,2,3,0};
 647                                 buf->append(vertices, 4, indices, 6);
 648                                 y = yy - 1;
 649                         }
 650                         if (!scancol[y * wstep] && scancol[y * wstep + 1])
 651                         {
 652                                 u32 yy = y + 1;
 653                                 while (!scancol[yy * wstep] && scancol[yy * wstep + 1])
 654                                         ++yy;
 655                                 f32 vx = (x + eps) / (f32) width - 0.5;
 656                                 f32 vy1 = 0.5 - (y - eps) / (f32) height;
 657                                 f32 vy2 = 0.5 - (yy + eps) / (f32) height;
 658                                 f32 tx = (x + 0.5) / (f32) width;
 659                                 f32 ty1 = y / (f32) height;
 660                                 f32 ty2 = yy / (f32) height;
 661                                 video::S3DVertex vertices[8] =
 662                                 {
 663                                         video::S3DVertex(vx,vy1,-0.5, -1,0,0, c, tx,ty1),
 664                                         video::S3DVertex(vx,vy2,-0.5, -1,0,0, c, tx,ty2),
 665                                         video::S3DVertex(vx,vy2,+0.5, -1,0,0, c, tx,ty2),
 666                                         video::S3DVertex(vx,vy1,+0.5, -1,0,0, c, tx,ty1),
 667                                 };
 668                                 u16 indices[6] = {0,1,2,2,3,0};
 669                                 buf->append(vertices, 4, indices, 6);
 670                                 y = yy - 1;
 671                         }
 672                 }
 673         }
 674
 675         // Add to mesh
 676         scene::SMesh* mesh = new scene::SMesh();
 677         buf->recalculateBoundingBox();
 678         mesh->addMeshBuffer(buf);
 679         buf->drop();
 680         mesh->recalculateBoundingBox();
 681         scene::SAnimatedMesh* anim_mesh = new scene::SAnimatedMesh(mesh);
 682         mesh->drop();
 683         return anim_mesh;
 684 }
 685
 686 scene::IAnimatedMesh* ExtrudedSpriteSceneNode::extrude(video::ITexture* texture)
 687 {
 688         scene::IAnimatedMesh* mesh = NULL;
 689         core::dimension2d<u32> size = texture->getSize();
 690         video::ECOLOR_FORMAT format = texture->getColorFormat();
 691         if (format == video::ECF_A8R8G8B8)
 692         {
 693                 // Texture is in the correct color format, we can pass it
 694                 // to extrudeARGB right away.
 695                 void* data = texture->lock(true);
 696                 if (data == NULL)
 697                         return NULL;
 698                 mesh = extrudeARGB(size.Width, size.Height, (u8*) data);
 699                 texture->unlock();
 700         }
 701         else
 702         {
 703                 video::IVideoDriver* driver = SceneManager->getVideoDriver();
 704
 705                 video::IImage* img1 = driver->createImageFromData(format, size, texture->lock(true));
 706                 if (img1 == NULL)
 707                         return NULL;
 708
 709                 // img1 is in the texture's color format, convert to 8-bit ARGB
 710                 video::IImage* img2 = driver->createImage(video::ECF_A8R8G8B8, size);
 711                 if (img2 != NULL)
 712                 {
 713                         img1->copyTo(img2);
 714                         img1->drop();
 715
 716                         mesh = extrudeARGB(size.Width, size.Height, (u8*) img2->lock());
 717                         img2->unlock();
 718                         img2->drop();
 719                 }
 720                 img1->drop();
 721         }
 722         return mesh;
 723 }
 724
 725 scene::IMesh* ExtrudedSpriteSceneNode::createCubeMesh()
 726 {
 727         video::SColor c(255,255,255,255);
 728         video::S3DVertex vertices[24] =
 729         {
 730                 // Up
 731                 video::S3DVertex(-0.5,+0.5,-0.5, 0,1,0, c, 0,1),
 732                 video::S3DVertex(-0.5,+0.5,+0.5, 0,1,0, c, 0,0),
 733                 video::S3DVertex(+0.5,+0.5,+0.5, 0,1,0, c, 1,0),
 734                 video::S3DVertex(+0.5,+0.5,-0.5, 0,1,0, c, 1,1),
 735                 // Down
 736                 video::S3DVertex(-0.5,-0.5,-0.5, 0,-1,0, c, 0,0),
 737                 video::S3DVertex(+0.5,-0.5,-0.5, 0,-1,0, c, 1,0),
 738                 video::S3DVertex(+0.5,-0.5,+0.5, 0,-1,0, c, 1,1),
 739                 video::S3DVertex(-0.5,-0.5,+0.5, 0,-1,0, c, 0,1),
 740                 // Right
 741                 video::S3DVertex(+0.5,-0.5,-0.5, 1,0,0, c, 0,1),
 742                 video::S3DVertex(+0.5,+0.5,-0.5, 1,0,0, c, 0,0),
 743                 video::S3DVertex(+0.5,+0.5,+0.5, 1,0,0, c, 1,0),
 744                 video::S3DVertex(+0.5,-0.5,+0.5, 1,0,0, c, 1,1),
 745                 // Left
 746                 video::S3DVertex(-0.5,-0.5,-0.5, -1,0,0, c, 1,1),
 747                 video::S3DVertex(-0.5,-0.5,+0.5, -1,0,0, c, 0,1),
 748                 video::S3DVertex(-0.5,+0.5,+0.5, -1,0,0, c, 0,0),
 749                 video::S3DVertex(-0.5,+0.5,-0.5, -1,0,0, c, 1,0),
 750                 // Back
 751                 video::S3DVertex(-0.5,-0.5,+0.5, 0,0,-1, c, 1,1),
 752                 video::S3DVertex(+0.5,-0.5,+0.5, 0,0,-1, c, 0,1),
 753                 video::S3DVertex(+0.5,+0.5,+0.5, 0,0,-1, c, 0,0),
 754                 video::S3DVertex(-0.5,+0.5,+0.5, 0,0,-1, c, 1,0),
 755                 // Front
 756                 video::S3DVertex(-0.5,-0.5,-0.5, 0,0,-1, c, 0,1),
 757                 video::S3DVertex(-0.5,+0.5,-0.5, 0,0,-1, c, 0,0),
 758                 video::S3DVertex(+0.5,+0.5,-0.5, 0,0,-1, c, 1,0),
 759                 video::S3DVertex(+0.5,-0.5,-0.5, 0,0,-1, c, 1,1),
 760         };
 761
 762         u16 indices[6] = {0,1,2,2,3,0};
 763
 764         scene::SMesh* mesh = new scene::SMesh();
 765         for (u32 i=0; i<6; ++i)
 766         {
 767                 scene::IMeshBuffer* buf = new scene::SMeshBuffer();
 768                 buf->append(vertices + 4 * i, 4, indices, 6);
 769                 buf->recalculateBoundingBox();
 770                 mesh->addMeshBuffer(buf);
 771                 buf->drop();
 772         }
 773         mesh->recalculateBoundingBox();
 774         return mesh;
 775 }